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procps/proc/pids.h

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library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
/*
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
* libprocps - Library to read proc filesystem
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
*
* Copyright (C) 1998-2005 Albert Cahalan
* Copyright (C) 2015 Craig Small <csmall@enc.com.au>
* Copyright (C) 2015 Jim Warner <james.warner@comcast.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
library: strictly cosmetic, absolutely no code changes This commit just contains some tweaks to comments plus a few adjustments to whitespace for alignment purposes and a normalization of the header inclusion #define's. [ plus a spelling error in one header file was fixed ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-09-28 20:40:10 +05:30
#ifndef PROCPS_PIDS_H
#define PROCPS_PIDS_H
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
library: replace the troublesome '__BEGIN_DECLS' macro When 'newlib' was introduced, in the commit referenced below, the use of that glibc '__BEGIN_DECLS' macro was standardized. However, as issue #88 revealed, this may result in a fatal build error with other environments. So, this patch just trades that macro for the standard '#ifdef __cplusplus' conventions (thus avoiding use of all those '#include <features.h>' directives as well). Reference(s): . newlib introduced commit a410e236abb47c7c43194e61d0566686f81513af . procps-ng-3.3.13 issue https://gitlab.com/procps-ng/procps/issues/88 . some additional discussion https://www.freelists.org/post/procps/PATCH-Replace-glibcspecific-macros-in-procnumah,1 . musl wiki (see: sys/cdefs.h error messages) https://wiki.musl-libc.org/faq.html Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-04-06 10:30:00 +05:30
#ifdef __cplusplus
extern "C" {
#endif
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
enum pids_item {
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_noop, // ( never altered )
PIDS_extra, // ( reset to zero )
PIDS_ADDR_END_CODE, // ul_int
PIDS_ADDR_KSTK_EIP, // ul_int
PIDS_ADDR_KSTK_ESP, // ul_int
PIDS_ADDR_START_CODE, // ul_int
PIDS_ADDR_START_STACK, // ul_int
PIDS_CGNAME, // str
PIDS_CGROUP, // str
PIDS_CGROUP_V, // strv
PIDS_CMD, // str
PIDS_CMDLINE, // str
PIDS_CMDLINE_V, // strv
PIDS_ENVIRON, // str
PIDS_ENVIRON_V, // strv
PIDS_EXIT_SIGNAL, // s_int
PIDS_FLAGS, // ul_int
library: normalize & minimize result types, <PIDS> api This commit attempts to minimize the variety of types currently used. Plus, the following were also changed: . the MEM fields were switched to parallel the VM guys . PIDS_MEM_VIRT -> PIDS_MEM_VIRT_PGS . PIDS_MEM_VIRT_KIB -> PIDS_MEM_VIRT . made NICE 's_int' so that it then parallels PRIORITY . change RTPRIO & SCHED_CLASS from 'ul_int' to 's_int' . removed Item_table 'oldflags' for an obsoleted field . PIDS_WCHAN_ADDR . added calculations like TICS_ALL_C for the following . PIDS_TICS_USER_C . PIDS_TICS_SYSTEM_C . these three new 'TICS' fields have been incorporated . PIDS_TICS_BLKIO - jiffies spent in block i/o . PIDS_TICS_GUEST - jiffies spent as a guest . PIDS_TICS_GUEST_C - as above, includes dead children . that PIDS_TICS_DELTA was renamed PIDS_TICS_ALL_DELTA ( so it did not hide between TICS_BLKIO & TICS_GUEST ) ( and to make clearer what's included: utime + stime ) . eliminated 'sl_int' entirely from that result struct [ often, the <pids> module changes necessitated that ] [ readproc header and source files had to change too ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-31 10:30:00 +05:30
PIDS_FLT_MAJ, // ul_int
PIDS_FLT_MAJ_C, // ul_int
PIDS_FLT_MAJ_DELTA, // s_int
PIDS_FLT_MIN, // ul_int
PIDS_FLT_MIN_C, // ul_int
PIDS_FLT_MIN_DELTA, // s_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_ID_EGID, // u_int
PIDS_ID_EGROUP, // str
PIDS_ID_EUID, // u_int
PIDS_ID_EUSER, // str
PIDS_ID_FGID, // u_int
PIDS_ID_FGROUP, // str
PIDS_ID_FUID, // u_int
PIDS_ID_FUSER, // str
library: expanded to provide for the UID used at login This patch represents the newlib implementation of Jan Rybar's merge request referenced below. It essentially moves that code out of the ps program and into our new library where it's available via the <pids> interface. Reference(s): https://gitlab.com/procps-ng/procps/merge_requests/57 https://bugzilla.redhat.com/show_bug.cgi?id=1518986 Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-02-11 12:41:11 +05:30
PIDS_ID_LOGIN, // s_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_ID_PGRP, // s_int
PIDS_ID_PID, // s_int
PIDS_ID_PPID, // s_int
PIDS_ID_RGID, // u_int
PIDS_ID_RGROUP, // str
PIDS_ID_RUID, // u_int
PIDS_ID_RUSER, // str
PIDS_ID_SESSION, // s_int
PIDS_ID_SGID, // u_int
PIDS_ID_SGROUP, // str
PIDS_ID_SUID, // u_int
PIDS_ID_SUSER, // str
PIDS_ID_TGID, // s_int
PIDS_ID_TPGID, // s_int
PIDS_LXCNAME, // str
library: normalize & minimize result types, <PIDS> api This commit attempts to minimize the variety of types currently used. Plus, the following were also changed: . the MEM fields were switched to parallel the VM guys . PIDS_MEM_VIRT -> PIDS_MEM_VIRT_PGS . PIDS_MEM_VIRT_KIB -> PIDS_MEM_VIRT . made NICE 's_int' so that it then parallels PRIORITY . change RTPRIO & SCHED_CLASS from 'ul_int' to 's_int' . removed Item_table 'oldflags' for an obsoleted field . PIDS_WCHAN_ADDR . added calculations like TICS_ALL_C for the following . PIDS_TICS_USER_C . PIDS_TICS_SYSTEM_C . these three new 'TICS' fields have been incorporated . PIDS_TICS_BLKIO - jiffies spent in block i/o . PIDS_TICS_GUEST - jiffies spent as a guest . PIDS_TICS_GUEST_C - as above, includes dead children . that PIDS_TICS_DELTA was renamed PIDS_TICS_ALL_DELTA ( so it did not hide between TICS_BLKIO & TICS_GUEST ) ( and to make clearer what's included: utime + stime ) . eliminated 'sl_int' entirely from that result struct [ often, the <pids> module changes necessitated that ] [ readproc header and source files had to change too ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-31 10:30:00 +05:30
PIDS_MEM_CODE, // ul_int
PIDS_MEM_CODE_PGS, // ul_int
PIDS_MEM_DATA, // ul_int
PIDS_MEM_DATA_PGS, // ul_int
PIDS_MEM_RES, // ul_int
PIDS_MEM_RES_PGS, // ul_int
PIDS_MEM_SHR, // ul_int
PIDS_MEM_SHR_PGS, // ul_int
PIDS_MEM_VIRT, // ul_int
PIDS_MEM_VIRT_PGS, // ul_int
PIDS_NICE, // s_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_NLWP, // s_int
PIDS_NS_IPC, // ul_int
PIDS_NS_MNT, // ul_int
PIDS_NS_NET, // ul_int
PIDS_NS_PID, // ul_int
PIDS_NS_USER, // ul_int
PIDS_NS_UTS, // ul_int
PIDS_OOM_ADJ, // s_int
PIDS_OOM_SCORE, // s_int
PIDS_PRIORITY, // s_int
PIDS_PROCESSOR, // u_int
library: set stage for NUMA node field display support In response to that suggestion referenced below, these changes allow display of task/thread level NUMA nodes. Currently, only the 'top' program offers any NUMA type support and it is limited to the Summary Area display. With this commit both the 'top' and 'ps' programs will be able to display NUMA nodes associated with threads. Reference(s): https://gitlab.com/procps-ng/procps/issues/58 Signed-off-by: Jim Warner <james.warner@comcast.net>
2017-05-12 10:33:00 +05:30
PIDS_PROCESSOR_NODE, // s_int
library: normalize & minimize result types, <PIDS> api This commit attempts to minimize the variety of types currently used. Plus, the following were also changed: . the MEM fields were switched to parallel the VM guys . PIDS_MEM_VIRT -> PIDS_MEM_VIRT_PGS . PIDS_MEM_VIRT_KIB -> PIDS_MEM_VIRT . made NICE 's_int' so that it then parallels PRIORITY . change RTPRIO & SCHED_CLASS from 'ul_int' to 's_int' . removed Item_table 'oldflags' for an obsoleted field . PIDS_WCHAN_ADDR . added calculations like TICS_ALL_C for the following . PIDS_TICS_USER_C . PIDS_TICS_SYSTEM_C . these three new 'TICS' fields have been incorporated . PIDS_TICS_BLKIO - jiffies spent in block i/o . PIDS_TICS_GUEST - jiffies spent as a guest . PIDS_TICS_GUEST_C - as above, includes dead children . that PIDS_TICS_DELTA was renamed PIDS_TICS_ALL_DELTA ( so it did not hide between TICS_BLKIO & TICS_GUEST ) ( and to make clearer what's included: utime + stime ) . eliminated 'sl_int' entirely from that result struct [ often, the <pids> module changes necessitated that ] [ readproc header and source files had to change too ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-31 10:30:00 +05:30
PIDS_RSS, // ul_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_RSS_RLIM, // ul_int
library: normalize & minimize result types, <PIDS> api This commit attempts to minimize the variety of types currently used. Plus, the following were also changed: . the MEM fields were switched to parallel the VM guys . PIDS_MEM_VIRT -> PIDS_MEM_VIRT_PGS . PIDS_MEM_VIRT_KIB -> PIDS_MEM_VIRT . made NICE 's_int' so that it then parallels PRIORITY . change RTPRIO & SCHED_CLASS from 'ul_int' to 's_int' . removed Item_table 'oldflags' for an obsoleted field . PIDS_WCHAN_ADDR . added calculations like TICS_ALL_C for the following . PIDS_TICS_USER_C . PIDS_TICS_SYSTEM_C . these three new 'TICS' fields have been incorporated . PIDS_TICS_BLKIO - jiffies spent in block i/o . PIDS_TICS_GUEST - jiffies spent as a guest . PIDS_TICS_GUEST_C - as above, includes dead children . that PIDS_TICS_DELTA was renamed PIDS_TICS_ALL_DELTA ( so it did not hide between TICS_BLKIO & TICS_GUEST ) ( and to make clearer what's included: utime + stime ) . eliminated 'sl_int' entirely from that result struct [ often, the <pids> module changes necessitated that ] [ readproc header and source files had to change too ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-31 10:30:00 +05:30
PIDS_RTPRIO, // s_int
PIDS_SCHED_CLASS, // s_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_SD_MACH, // str
PIDS_SD_OUID, // str
PIDS_SD_SEAT, // str
PIDS_SD_SESS, // str
PIDS_SD_SLICE, // str
PIDS_SD_UNIT, // str
PIDS_SD_UUNIT, // str
PIDS_SIGBLOCKED, // str
PIDS_SIGCATCH, // str
PIDS_SIGIGNORE, // str
PIDS_SIGNALS, // str
PIDS_SIGPENDING, // str
PIDS_STATE, // s_ch
PIDS_SUPGIDS, // str
PIDS_SUPGROUPS, // str
PIDS_TICS_ALL, // ull_int
PIDS_TICS_ALL_C, // ull_int
library: normalize & minimize result types, <PIDS> api This commit attempts to minimize the variety of types currently used. Plus, the following were also changed: . the MEM fields were switched to parallel the VM guys . PIDS_MEM_VIRT -> PIDS_MEM_VIRT_PGS . PIDS_MEM_VIRT_KIB -> PIDS_MEM_VIRT . made NICE 's_int' so that it then parallels PRIORITY . change RTPRIO & SCHED_CLASS from 'ul_int' to 's_int' . removed Item_table 'oldflags' for an obsoleted field . PIDS_WCHAN_ADDR . added calculations like TICS_ALL_C for the following . PIDS_TICS_USER_C . PIDS_TICS_SYSTEM_C . these three new 'TICS' fields have been incorporated . PIDS_TICS_BLKIO - jiffies spent in block i/o . PIDS_TICS_GUEST - jiffies spent as a guest . PIDS_TICS_GUEST_C - as above, includes dead children . that PIDS_TICS_DELTA was renamed PIDS_TICS_ALL_DELTA ( so it did not hide between TICS_BLKIO & TICS_GUEST ) ( and to make clearer what's included: utime + stime ) . eliminated 'sl_int' entirely from that result struct [ often, the <pids> module changes necessitated that ] [ readproc header and source files had to change too ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-31 10:30:00 +05:30
PIDS_TICS_ALL_DELTA, // s_int
PIDS_TICS_BLKIO, // ull_int
PIDS_TICS_GUEST, // ull_int
PIDS_TICS_GUEST_C, // ull_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_TICS_SYSTEM, // ull_int
PIDS_TICS_SYSTEM_C, // ull_int
PIDS_TICS_USER, // ull_int
PIDS_TICS_USER_C, // ull_int
PIDS_TIME_ALL, // ull_int
PIDS_TIME_ELAPSED, // ull_int
PIDS_TIME_START, // ull_int
PIDS_TTY, // s_int
PIDS_TTY_NAME, // str
PIDS_TTY_NUMBER, // str
library: normalize & minimize result types, <PIDS> api This commit attempts to minimize the variety of types currently used. Plus, the following were also changed: . the MEM fields were switched to parallel the VM guys . PIDS_MEM_VIRT -> PIDS_MEM_VIRT_PGS . PIDS_MEM_VIRT_KIB -> PIDS_MEM_VIRT . made NICE 's_int' so that it then parallels PRIORITY . change RTPRIO & SCHED_CLASS from 'ul_int' to 's_int' . removed Item_table 'oldflags' for an obsoleted field . PIDS_WCHAN_ADDR . added calculations like TICS_ALL_C for the following . PIDS_TICS_USER_C . PIDS_TICS_SYSTEM_C . these three new 'TICS' fields have been incorporated . PIDS_TICS_BLKIO - jiffies spent in block i/o . PIDS_TICS_GUEST - jiffies spent as a guest . PIDS_TICS_GUEST_C - as above, includes dead children . that PIDS_TICS_DELTA was renamed PIDS_TICS_ALL_DELTA ( so it did not hide between TICS_BLKIO & TICS_GUEST ) ( and to make clearer what's included: utime + stime ) . eliminated 'sl_int' entirely from that result struct [ often, the <pids> module changes necessitated that ] [ readproc header and source files had to change too ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-31 10:30:00 +05:30
PIDS_VM_DATA, // ul_int
PIDS_VM_EXE, // ul_int
PIDS_VM_LIB, // ul_int
PIDS_VM_RSS, // ul_int
PIDS_VM_RSS_ANON, // ul_int
PIDS_VM_RSS_FILE, // ul_int
PIDS_VM_RSS_LOCKED, // ul_int
PIDS_VM_RSS_SHARED, // ul_int
PIDS_VM_SIZE, // ul_int
PIDS_VM_STACK, // ul_int
PIDS_VM_SWAP, // ul_int
PIDS_VM_USED, // ul_int
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_VSIZE_PGS, // ul_int
PIDS_WCHAN_NAME // str
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
};
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
enum pids_fetch_type {
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_FETCH_TASKS_ONLY,
PIDS_FETCH_THREADS_TOO
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
};
library: changed use of 'fill' to 'select', <pids> API Remove a remnant of this new API's evolution. Here we no longer fill stacks, rather we reap and select them. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-04-18 10:30:00 +05:30
enum pids_select_type {
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_SELECT_PID = 0x1000,
PIDS_SELECT_UID = 0x4000
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
};
enum pids_sort_order {
library: removed all the 'PROCPS_' enumerator prefixes Many of our item enumerator identifiers are very long, especially in that <VMSTAT> module. Additionally, they all contain the exact same universal 'PROCPS_' prefix. The origins for this are likely found in the desire to avoid name clashes with other potential include files. But with procps-ng newlib, we've probably gone way too far. Did 'PROCPS_PIDS_TICS_SYSTEM' actually offer more protection against clash than 'PIDS_TICS_SYSTEM' does? I don't think so. Besides, no matter how big that name becomes, one can never guarantee they'll never be some clash. And, conversely, extremely short names will not always create conflict. Of course, in either case when some clash occurs, one can always #undef that problem. Thus, this commit will eliminate that 'PROCPS_' prefix making all of those enum identifiers a little shorter. And, we'll still be well above some ridiculously short (criminally short) names found in some common headers: - - - - - - - - - - <term.h> - 'tab', 'TTY', etc - - - - - - - - - - - - - - - - <search.h> - 'ENTER', ENTRY', 'FIND', etc ------------------------------------------------------ Finally, with this as a last of the wholesale changes, we will have established the naming conventions below: . only functions will begin with that 'procps_' prefix . exposed structures begin with the module/header name . item enumerators begin like structs, but capitalized . other enumerators work exactly like item enumerators . macros and constants begin just like the enumerators ------------------------------------------------------ Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
PIDS_SORT_ASCEND = +1,
PIDS_SORT_DESCEND = -1
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
};
struct pids_result {
enum pids_item item;
union {
library: more tweaks for code and/or comments, 3rd gen Following is a summary of significant changes (if any) to each of these now upgraded 3rd gen library modules. <meminfo> ............................................ . eliminated duplicate decl of 'struct procps_meminfo' . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . how did i miss relocating all these friggin' #undefs . cleanup 'get' return logic (remove a redundant 'if') <pids> ............................................... . repositioned the procps_pidsinfo structure in header . removed the extra trailing comma from enum pids_item . standardized/normalized results struct union members <slabinfo> ........................................... . corrected comment typo (jeeze, in an 'aligned' para) . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . removed an obsolete #undef from procps_slabinfo_sort . cleanup 'get' return logic (remove a redundant 'if') <stat> ............................................... . how did i miss relocating all these friggin' #undefs . corrected an initialization fencepost used with numa <=== see Craig, here's a bug fix . removed the extra trailing comma from enum stat_item . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . strengthen those parm checks in procps_stat_get func . cleanup 'get' return logic (remove a redundant 'if') <vmstat> ............................................. . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . cleanup 'get' return logic (remove a redundant 'if') [ virtually all of these tweaks reflect the author's ] [ continuing pursuit of an unreasonable goal -- that ] [ of a 'perfect' (plus 'pretty') C language program! ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-06-14 10:30:00 +05:30
signed char s_ch;
signed int s_int;
unsigned int u_int;
unsigned long ul_int;
unsigned long long ull_int;
char *str;
char **strv;
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
} result;
};
struct pids_stack {
struct pids_result *head;
};
struct pids_counts {
int total;
library: account for idle state ('I') threads in total With the documentation update in the commit referenced below, we should also account for such threads as they will already be represented in the task/thread totals. [ and do it in a way that might avoid future changes ] Reference(s): commit 91df65b9e778b9d7da7952d766e129f58423b807 Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-01-13 11:30:00 +05:30
int running, sleeping, stopped, zombied, other;
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
};
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
struct pids_fetch {
library: more pids_fetch struct opaqueness, <PIDS> api With all our 3rd generation interfaces, we're now well positioned to preserve binary compatibility should new fields be added to any public structure (assuming that the 'result' union already contains its largest type). This remains true even for the <pids> interface, which unlike the others, has one structure embedded within a separate struct rather than declaring a pointer to it. The counts struct was positioned after the stacks ptrs array so as to preserve that ABI if ever new ints were added. Logically, however, the counts (especially that total) should precede the stacks array if we wished to properly place a horse (total) before a cart (stacks). So to enable relocating those counts we will no longer embed that structure, but provide a pointer to it. And this will make accessing syntax feel more natural too. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-06-23 10:30:00 +05:30
struct pids_counts *counts;
library: miscellaneous tweaks to pid code and comments . traded a complex misaligned memory allocation scheme in the make_hist function for a simple aligned scheme. plus memory allocation increases are globally defined. . changed 1 parameter for procps_pids_stacks_sort() to better reflect the 'array of pointers', not an address of a pointer as is used with guys such as 'new/unref'. . the pids_reap struct was changed slightly to make it more reflective of it's actual implementation details. . the Item_table member .mustfree is now .needfree and that .makehist was now made .needhist for consistency. . reduced the number of separate 'return NULL;' source statements in that primary procps_pids_reap() routine. . ensured consistent reference to sizeof(void *) & not occasional reference to sizeof(void*) without a space. . rather than enable/disable validate_stacks via a #if in the function body, it is now handled via a #define. . some comments in the procps_pids_reset function were adjusted to reflect this current implementation. shown originally, they reflected an aborted attempt to avoid a testing aberration not fully understood at the time. . added a summary of the memory overhead cost of HST_t processing to that UNREF_RPTHASH output at unref time. . a 'PIDs at max depth:' portion of that UNREF_RPTHASH enabled #define is now published only when the maximum depth of hash table entry chains exceed depths of one. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-20 10:30:00 +05:30
struct pids_stack **stacks;
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
};
library: expand VAL macros to include the context parm This patch will set the stage for validating the types referenced in the result union. For now, the parameter representing that 'info' structure will remain unused. [ and while we're at it, let us correct a faulty GET ] [ macro in the diskstats header. that puppy missed a ] [ parm which ain't so good if that guy is ever used! ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-08-05 10:30:00 +05:30
#define PIDS_VAL( relative_enum, type, stack, info ) \
library: a couple of miscellaneous changes, <PIDS> api This patch represents the following minor adjustments: . old PROCTAB used with select & reap more descriptive . reformatted PROCPS_PIDS_VAL macro like other 3rd gen Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-06-18 10:30:00 +05:30
stack -> head [ relative_enum ] . result . type
library: introduce pids 'value extractor' helper macro As an experiment a helper macro used to extract values from a result stack has been added to the header file. Don't force callers to reinvent that particular wheel. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-26 10:30:00 +05:30
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info;
library: more tweaks for code and/or comments, 3rd gen Following is a summary of significant changes (if any) to each of these now upgraded 3rd gen library modules. <meminfo> ............................................ . eliminated duplicate decl of 'struct procps_meminfo' . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . how did i miss relocating all these friggin' #undefs . cleanup 'get' return logic (remove a redundant 'if') <pids> ............................................... . repositioned the procps_pidsinfo structure in header . removed the extra trailing comma from enum pids_item . standardized/normalized results struct union members <slabinfo> ........................................... . corrected comment typo (jeeze, in an 'aligned' para) . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . removed an obsolete #undef from procps_slabinfo_sort . cleanup 'get' return logic (remove a redundant 'if') <stat> ............................................... . how did i miss relocating all these friggin' #undefs . corrected an initialization fencepost used with numa <=== see Craig, here's a bug fix . removed the extra trailing comma from enum stat_item . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . strengthen those parm checks in procps_stat_get func . cleanup 'get' return logic (remove a redundant 'if') <vmstat> ............................................. . standardized/normalized results struct union members . added 'std' & 'var' dividers in .c file, like <pids> . cleanup 'get' return logic (remove a redundant 'if') [ virtually all of these tweaks reflect the author's ] [ continuing pursuit of an unreasonable goal -- that ] [ of a 'perfect' (plus 'pretty') C language program! ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-06-14 10:30:00 +05:30
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
int procps_pids_new (struct pids_info **info, enum pids_item *items, int numitems);
int procps_pids_ref (struct pids_info *info);
int procps_pids_unref (struct pids_info **info);
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
library: introduce a fatal 'proc not mounted' function Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-09-11 10:30:00 +05:30
struct pids_stack *fatal_proc_unmounted (
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info *info,
library: introduce a fatal 'proc not mounted' function Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-09-11 10:30:00 +05:30
int return_self);
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
struct pids_stack *procps_pids_get (
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info *info,
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
enum pids_fetch_type which);
library: add sequential access to that pids collection To ease the transition to the new interface, for other than that top program, individual read provisions have been added to the <proc/pids.h> API. This represents a refinement of a position stated in a post noted below. Reference(s): http://www.freelists.org/post/procps/newlib-ps-fix Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-26 10:30:00 +05:30
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
struct pids_fetch *procps_pids_reap (
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info *info,
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
enum pids_fetch_type which);
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
int procps_pids_reset (
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info *info,
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
enum pids_item *newitems,
int newnumitems);
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
struct pids_fetch *procps_pids_select (
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info *info,
library: normalize the <pids> fill/selection interface After wrestling with the conversion of both top and ps the differences between reap (all) & fill (select) has become increasingly inconvenient. So this patch simply normalizes that API making returned results identical. The former procps_pids_stacks_fill identifier will now be known as procps_pids_select which serves as logical counterpart to the existing procps_pids_reap function. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-10-01 10:30:00 +05:30
unsigned *these,
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
int numthese,
library: changed use of 'fill' to 'select', <pids> API Remove a remnant of this new API's evolution. Here we no longer fill stacks, rather we reap and select them. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-04-18 10:30:00 +05:30
enum pids_select_type which);
library: normalize the <pids> fill/selection interface After wrestling with the conversion of both top and ps the differences between reap (all) & fill (select) has become increasingly inconvenient. So this patch simply normalizes that API making returned results identical. The former procps_pids_stacks_fill identifier will now be known as procps_pids_select which serves as logical counterpart to the existing procps_pids_reap function. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-10-01 10:30:00 +05:30
library: rename the 'procps_pids_stacks_sort' function The above function was the sole public function in the <pids> interface to use the word 'stacks' in its name. All of the others dealt exclusively with their duties, So this commit normalizes that outlier by renaming it. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-10-11 10:30:00 +05:30
struct pids_stack **procps_pids_sort (
library: standardize all the 'context' structure names This patch attempts to standardize the naming of those most important (declared not defined) context structs. The present practice represents a hodge podge of names only some of which reflect the source /proc file name. And 2 of those file names embed a literal 'info' which is likely the origin of that required parm identifier. Now we'll append a universal '_info' to such structure names, while including the names of those /proc pseudo files where possible. In any case, that context struct will *always* begin with the actual module/header file name. And only the following two sound a little weird! ---------> 'meminfo_info' + 'slabinfo_info' <--------- Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-07-21 10:30:00 +05:30
struct pids_info *info,
library: miscellaneous tweaks to pid code and comments . traded a complex misaligned memory allocation scheme in the make_hist function for a simple aligned scheme. plus memory allocation increases are globally defined. . changed 1 parameter for procps_pids_stacks_sort() to better reflect the 'array of pointers', not an address of a pointer as is used with guys such as 'new/unref'. . the pids_reap struct was changed slightly to make it more reflective of it's actual implementation details. . the Item_table member .mustfree is now .needfree and that .makehist was now made .needhist for consistency. . reduced the number of separate 'return NULL;' source statements in that primary procps_pids_reap() routine. . ensured consistent reference to sizeof(void *) & not occasional reference to sizeof(void*) without a space. . rather than enable/disable validate_stacks via a #if in the function body, it is now handled via a #define. . some comments in the procps_pids_reset function were adjusted to reflect this current implementation. shown originally, they reflected an aborted attempt to avoid a testing aberration not fully understood at the time. . added a summary of the memory overhead cost of HST_t processing to that UNREF_RPTHASH output at unref time. . a 'PIDs at max depth:' portion of that UNREF_RPTHASH enabled #define is now published only when the maximum depth of hash table entry chains exceed depths of one. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-20 10:30:00 +05:30
struct pids_stack *stacks[],
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
int numstacked,
library: standardize portions of interface, <PIDS> api This represents a rather major interface redesign. The following highlights most of the changes/enhancements. . The 'read' interface (employed by pgrep & pidof) saw the biggest change. The 'open', 'next' and 'shut' guys all went bye-bye, replaced by a single 'get' function. . The items specified at 'new' time no longer serve as the maximum. In fact, items & numitems are now treated as optional, should callers prefer to wait until later when the 'reset' function would then become mandatory. . Even at 'reset' time, the stacks are not tied to any sort of maximum. They will grow dynamically as needed. . The order of some parameters was changed to parallel that found in our other APIs. Specifically, when items & numitems are needed they're specified in that order. . A user will no longer be prevented from concurrently employing any accessor functions. In other words, that 'get' (old 'read') won't preclude 'reap' and 'select'. . A duplicate enumerator was found dealing with locked resident pages. So, the name VM_LOCK was eliminated in favor of VM_RSS_LOCKED, which is way more descriptive. . The struct address returned to callers following any reap() or select() is now more sharable as pids_fetch. . Some input parameter names were changed to make them more descriptive of the intended purpose/requirements. ------------------------------------------------------ Internally, there were numerous implementation changes made that did not directly impact any potential users. . That #define FPRINT_STACKS was eliminated along with the associated supporting function and its invocation. . Addresses returned following 'reap' or 'select' will now be NULL delimited, so one has the option of stacks access via the total count or this new NULL fencepost. . Input params were simplified and generalized in both oldproc_open() & close() to enable more than 1 PROCTAB to be open simultaneously, which was required for get. . The PROCPS_PIDS_logical_end enum was relocated after the Item_table making the need to keep it synchronized more apparent (if the table expands it's right there). . The 'Public function' section of the source file was subdivided into 1) the three basic required functions; and 2) functions that can sometimes vary between APIs. Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-05-14 10:30:00 +05:30
enum pids_item sortitem,
library: implement task/thread support via the new api This commit is the culmination of efforts to modernize the library api. It should be treated as a first blush attempt, especially since I have absolutely no library design experience. But I did have a very strong desire to lessen the new library's impact on the top program. Under this new api, a 'stack' is the equivalent of the old proc_t. It can be seen as a variable length record whose contents & order is under complete user control. That initial stack/record configuration is established at procps_pids_new() time and will probably serve most program needs. But, a dynamic & demanding program like top will later change a stack via procps_pids_reset(). For programs like top & ps, procps_pids_reap() will be the function that will retrieve all tasks and threads. Any program that needs to filter / select only certain processes or users have available other functions that can be used: procps_pids_stacks_alloc, fill & dealloc. This implementation attempts to maximize that existing proven libprocps code base. As we gain more experience such actual code can be migrated into the pids.c file. Signed-off-by: Jim Warner <james.warner@comcast.net>
2015-08-19 10:30:00 +05:30
enum pids_sort_order order);
library: replace the troublesome '__BEGIN_DECLS' macro When 'newlib' was introduced, in the commit referenced below, the use of that glibc '__BEGIN_DECLS' macro was standardized. However, as issue #88 revealed, this may result in a fatal build error with other environments. So, this patch just trades that macro for the standard '#ifdef __cplusplus' conventions (thus avoiding use of all those '#include <features.h>' directives as well). Reference(s): . newlib introduced commit a410e236abb47c7c43194e61d0566686f81513af . procps-ng-3.3.13 issue https://gitlab.com/procps-ng/procps/issues/88 . some additional discussion https://www.freelists.org/post/procps/PATCH-Replace-glibcspecific-macros-in-procnumah,1 . musl wiki (see: sys/cdefs.h error messages) https://wiki.musl-libc.org/faq.html Signed-off-by: Jim Warner <james.warner@comcast.net>
2018-04-06 10:30:00 +05:30
#ifdef __cplusplus
}
#endif
library: strictly cosmetic, absolutely no code changes This commit just contains some tweaks to comments plus a few adjustments to whitespace for alignment purposes and a normalization of the header inclusion #define's. [ plus a spelling error in one header file was fixed ] Signed-off-by: Jim Warner <james.warner@comcast.net>
2016-09-28 20:40:10 +05:30
#endif
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