Craig Small
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doc/libproc.3
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doc/libproc.3
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.\" t
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.\" (C) Copyright 2016 Craig Small <csmall@enc.com.au>
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.\"
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.\" %%%LICENSE_START(LGPL_2.1+)
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@ -16,7 +17,7 @@
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.\" Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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.\" %%%LICENSE_END
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.\"
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.TH LIBPROC 3 2016-04-18 "libproc-2"
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.TH LIBPROC 3 2016-04-19 "libproc-2"
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.\" Please adjust this date whenever revising the manpage.
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.\"
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.SH NAME
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@ -38,285 +39,147 @@ The enum \fIpids_item\fR is used by the functions
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.BR procps_pids_reset "(3) and"
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.BR procps_pids_sort (3).
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The following items can be fetched for a process:
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.TP
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.B PROCPS_PIDS_ADDR_END_CODE
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?
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.TP
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.B PROCPS_PIDS_ADDR_KSTK_EIP
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Instruction pointer.
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.TP
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.B PROCPS_PIDS_ADDR_KSTK_ESP
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Stack pointer.
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.TP
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.B PROCPS_PIDS_ADDR_START_CODE
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?
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.TP
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.B PROCPS_PIDS_ADDR_START_STACK
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Address of the start (bottom) of the stack.
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.TP
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.B PROCPS_PIDS_ALARM
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?
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.TP
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.B PROCPS_PIDS_CGNAME
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The name of the control group for the process.
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.TP
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.B PROCPS_PIDS_CGROUP, PROCPS_PIDS_CGROUP_V
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List of control groups the process belongs to as a string or string vector.
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.TP
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.B PROCPS_PIDS_CMD
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Command name (only the executable name).
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.TP
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.B PROCPS_PIDS_CMDLINE, PROCPS_PIDS_CMDLINE_V
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Full command line as a string or string vector.
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.TP
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.B PROCPS_PIDS_ENVIRON, PROCPS_PIDS_ENVIRON_V
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The processes environment as a string or string vector.
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.TP
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.B PROCPS_PIDS_EXIT_SIGNAL
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?
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.TP
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.B PROCPS_PIDS_FLAGS
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Process flags.
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.TP
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.B PROCPS_PIDS_FLT_MAJ
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Number of major page faults.
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.TP
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.B PROCPS_PIDS_FLT_MAJ_C
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Cumulative major page faults.
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.TP
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.B PROCPS_PIDS_FLT_MAJ_DELTA
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Number of major page faults since last fetch.
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.TP
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.B PROCPS_PIDS_FLT_MIN
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Number of minor page faults.
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.TP
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.B PROCPS_PIDS_FLT_MIN_C
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Culmative minor page faults.
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.TP
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.B PROCPS_PIDS_FLT_MIN_DELTA
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Number of minor page faults since last fetch.
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.TP
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.B PROCPS_PIDS_ID_EGID, PROCPS_PIDS_ID_EGROUP
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Effective group as a ID number or name.
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.TP
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.B PROCPS_PIDS_ID_EUID, PROCPS_PIDS_ID_EUSER
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Effective user ID number or name.
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.TP
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.B PROCPS_PIDS_ID_FGID, PROCPS_PIDS_ID_FGROUP
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File system access group ID number or name.
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.TP
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.B PROCPS_PIDS_ID_FUID, PROCPS_PIDS_ID_FUSER
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File sytem access user ID number or name.
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.TP
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.B PROCPS_PIDS_ID_PGRP
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Process group ID, or process ID of group leader.
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.TP
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.B PROCPS_PIDS_ID_PID
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Proccess ID number.
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.TP
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.B PROCPS_PIDS_ID_PPID
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Process ID number of parent.
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.TP
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.B PROCPS_PIDS_ID_RGID, PROCPS_PIDS_ID_RGROUP
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Real group ID number or name.
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.TP
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.B PROCPS_PIDS_ID_RUID, PROCPS_PIDS_ID_RUSER
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Real user ID number or name.
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.TP
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.B PROCPS_PIDS_ID_SESSION
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Session ID number, or process ID of session leader.
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.TP
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.B PROCPS_PIDS_ID_SGID, PROCPS_PIDS_ID_SGROUP
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Saved group ID number or name.
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.TP
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.B PROCPS_PIDS_ID_SUID, PROCPS_PIDS_ID_SUSER
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Saved user ID number or name.
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.TP
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.B PROCPS_PIDS_ID_TGID
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Thread group ID number, or process ID of thread group leader.
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.TP
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.B PROCPS_PIDS_ID_TPGID
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Process ID of foreground process group on the tty.
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.TP
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.B PROCPS_PIDS_LXCNAME
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Linux container name.
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.TP
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.B PROCPS_PIDS_MEM_CODE
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?
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.TP
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.B PROCPS_PIDS_MEM_CODE_KIB
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?
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.TP
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.B PROCPS_PIDS_MEM_DATA
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?
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.TP
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.B PROCPS_PIDS_MEM_DATA_KIB
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?
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.TP
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.B PROCPS_PIDS_MEM_DT
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?
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.TP
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.B PROCPS_PIDS_MEM_LRS
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?
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.TP
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.B PROCPS_PIDS_MEM_RES
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Resident set size
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.TP
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.B PROCPS_PIDS_MEM_RES_KIB
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Resident set size
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.TP
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.B PROCPS_PIDS_MEM_SHR
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Shared memory
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.TP
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.B PROCPS_PIDS_MEM_SHR_KIB
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Shared memory
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.TP
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.B PROCPS_PIDS_MEM_VIRT
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Virtual memory.
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.TP
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.B PROCPS_PIDS_MEM_VIRT_KIB
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Virtual memory.
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.TP
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.B PROCPS_PIDS_NICE
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Nice value.
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.TP
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.B PROCPS_PIDS_NLWP
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Number of lwps (threads) in the process.
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.TP
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.B PROCPS_PIDS_NS_IPC, PROCPS_PIDS_NS_MNT, PROCPS_PIDS_NS_NET, PROCPS_PIDS_NS_PID, PROCPS_PIDS_NS_USER, PROCPS_PIDS_NS_UTS
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IDs of the current namespaces for IPC, mount, network, PID, user or UTS.
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See
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.B user_namespaces (7)
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for further information on these items.
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.TP
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.B PROCPS_PIDS_OOM_ADJ
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?
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.TP
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.B PROCPS_PIDS_OOM_SCORE
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?
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.TP
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.B PROCPS_PIDS_PRIORITY
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Kernel scheduling priority.
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.TP
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.B PROCPS_PIDS_PROCESSOR
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Current CPU the process is running on.
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.TP
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.B PROCPS_PIDS_RSS
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Resident set size.
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.TP
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.B PROCPS_PIDS_RSS_RLIM
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?
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.TP
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.B PROCPS_PIDS_RTPRIO
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Realtime priority.
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.TP
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.B PROCPS_PIDS_SCHED_CLASS
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Scheduling class, see
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.BR sched (7).
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.TP
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.B PROCPS_PIDS_SD_MACH, PROCPS_PIDS_SD_OUID, PROCPS_PIDS_SD_SEAT, PROCPS_PIDS_SD_SESS, PROCPS_PIDS_SD_SLICE, PROCPS_PIDS_SD_UNIT, PROCPS_PIDS_SD_UUNIT
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The systemd machine name, owner user ID, seat, session, slice, unit or user unit; see
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.BR sd_pid_get_session (3).
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.TP
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.B PROCPS_PIDS_SIGBLOCKED
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?
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.TP
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.B PROCPS_PIDS_SIGCATCH
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?
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.TP
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.B PROCPS_PIDS_SIGIGNORE
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?
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.TP
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.B PROCPS_PIDS_SIGNALS
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?
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.TP
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.B PROCPS_PIDS_SIGPENDING
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?
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.TP
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.B PROCPS_PIDS_STATE
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Process state codes.
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.TP
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.B PROCPS_PIDS_SUPGIDS, PROCPS_PIDS_SUPGROUPS
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IDs or names of the supplementary groups.
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.TP
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.B PROCPS_PIDS_TICS_ALL
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Sum of user and system time.
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.TP
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.B PROCPS_PIDS_TICS_ALL_C
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Cumulative sum of user and system time.
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.TP
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.B PROCPS_PIDS_TICS_DELTA
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Difference of sum of user and system time since last fetch.
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.TP
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.B PROCPS_PIDS_TICS_SYSTEM
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?
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.TP
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.B PROCPS_PIDS_TICS_SYSTEM_C
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?
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.TP
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.B PROCPS_PIDS_TICS_USER
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?
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.TP
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.B PROCPS_PIDS_TICS_USER_C
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?
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.TP
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.B PROCPS_PIDS_TIME_ALL
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?
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.TP
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.B PROCPS_PIDS_TIME_ELAPSED
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Total seconds since process started.
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.TP
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.B PROCPS_PIDS_TIME_START
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Time the process started.
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.TP
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.B PROCPS_PIDS_TTY, PROCPS_PIDS_TTY_NAME, PROCPS_PIDS_TTY_NUMBER
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Controlling terminal as a ID, name or number
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.TP
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.B PROCPS_PIDS_VM_DATA
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?
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.TP
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.B PROCPS_PIDS_VM_EXE
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?
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.TP
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.B PROCPS_PIDS_VM_LIB
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?
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.TP
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.B PROCPS_PIDS_VM_LOCK
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?
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.TP
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.B PROCPS_PIDS_VM_RSS
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?
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.TP
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.B PROCPS_PIDS_VM_RSS_ANON
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?
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.TP
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.B PROCPS_PIDS_VM_RSS_FILE
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?
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.TP
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.B PROCPS_PIDS_VM_RSS_LOCKED
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?
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.TP
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.B PROCPS_PIDS_VM_RSS_SHARED
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?
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.TP
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.B PROCPS_PIDS_VM_SIZE
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?
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.TP
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.B PROCPS_PIDS_VM_STACK
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?
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.TP
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.B PROCPS_PIDS_VM_SWAP
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?
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.TP
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.B PROCPS_PIDS_VM_USED
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?
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.TP
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.B PROCPS_PIDS_VSIZE_PGS
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?
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.TP
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.B PROCPS_PIDS_WCHAN_ADDR, PROCPS_PIDS_WCHAN_NAME
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Address or name of the kernel function in which the process is sleeping.
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.TS
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l l l
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---
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lB l l.
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Item Type Description
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PROCPS_PIDS_ADDR_END_CODE ul_int The address below which program text can run
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PROCPS_PIDS_ADDR_KSTK_EIP ul_int Instruction pointer
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PROCPS_PIDS_ADDR_KSTK_ESP ul_int Stack pointer
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PROCPS_PIDS_ADDR_START_CODE ul_int The address above which program text can run
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PROCPS_PIDS_ADDR_START_STACK ul_int Address of the start (bottom) of the stack
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PROCPS_PIDS_ALARM sl_int ??
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PROCPS_PIDS_CGNAME str The name of the control group for the process
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PROCPS_PIDS_CGROUP str List of control groups
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PROCPS_PIDS_CGROUP_V strv List of control groups
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PROCPS_PIDS_CMD str Command name (only the executable name)
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PROCPS_PIDS_CMDLINE str Full command line
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PROCPS_PIDS_CMDLINE_V strv Full command line
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PROCPS_PIDS_ENVIRON str The process environment
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PROCPS_PIDS_ENVIRON_V strv The process environment
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PROCPS_PIDS_EXIT_SIGNAL s_int Signal sent to parent when this process dies
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PROCPS_PIDS_FLAGS ul_int Process flags
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PROCPS_PIDS_FLT_MAJ ul_int Number of major page faults
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PROCPS_PIDS_FLT_MAJ_C ul_int Cumulative major page faults
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PROCPS_PIDS_FLT_MAJ_DELTA ul_int Number of major page faults since last fetch
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PROCPS_PIDS_FLT_MIN ul_int Number of minor page faults
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PROCPS_PIDS_FLT_MIN_C ul_int Culmative minor page faults
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PROCPS_PIDS_FLT_MIN_DELTA ul_int Number of minor page faults since last fetch
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PROCPS_PIDS_ID_EGID u_int Effective group ID number
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PROCPS_PIDS_ID_EGROUP str Effective group name
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PROCPS_PIDS_ID_EUID u_int Effective user ID number
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PROCPS_PIDS_ID_EUSER str Effective user name
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PROCPS_PIDS_ID_FGID u_int File system access group ID number
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PROCPS_PIDS_ID_FGROUP str File system access group name
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PROCPS_PIDS_ID_FUID u_int File system access user ID number
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PROCPS_PIDS_ID_FUSER str File system access user name
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PROCPS_PIDS_ID_PGRP s_int Process group ID, or process ID of group leader
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PROCPS_PIDS_ID_PID s_int Proccess ID number
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PROCPS_PIDS_ID_PPID s_int Process ID number of parent
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PROCPS_PIDS_ID_RGID u_int Real group ID number
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PROCPS_PIDS_ID_RGROUP str Real group name
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PROCPS_PIDS_ID_RUID u_int Real user ID number
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PROCPS_PIDS_ID_RUSER str Real user name
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PROCPS_PIDS_ID_SESSION s_int Session ID number, or process ID of session leader
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PROCPS_PIDS_ID_SGID u_int Saved group ID number
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PROCPS_PIDS_ID_SGROUP str Saved group name
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PROCPS_PIDS_ID_SUID u_int Saved user ID number
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PROCPS_PIDS_ID_SUSER str Saved user nameSaved user name
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PROCPS_PIDS_ID_TGID s_int Thread group ID number, or process ID of thread group leader
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PROCPS_PIDS_ID_TPGID s_int Process ID of foreground process group on the tty
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PROCPS_PIDS_LXCNAME str Linux container name
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PROCPS_PIDS_MEM_CODE sl_int ??
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PROCPS_PIDS_MEM_CODE_KIB ul_int ??
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PROCPS_PIDS_MEM_DATA sl_int ??
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PROCPS_PIDS_MEM_DATA_KIB ul_int ??
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PROCPS_PIDS_MEM_DT sl_int ??
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PROCPS_PIDS_MEM_LRS sl_int ??
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PROCPS_PIDS_MEM_RES sl_int Resident set size
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PROCPS_PIDS_MEM_RES_KIB ul_int Resident set size
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PROCPS_PIDS_MEM_SHR sl_int Shared memory
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PROCPS_PIDS_MEM_SHR_KIB ul_int Shared memory
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PROCPS_PIDS_MEM_VIRT sl_int Virtual memory
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PROCPS_PIDS_MEM_VIRT_KIB ul_int Virtual memory
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PROCPS_PIDS_NICE sl_int Nice value
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PROCPS_PIDS_NLWP s_int Number of lwps (threads) in the process
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PROCPS_PIDS_NS_IPC ul_int Current IPC namespace
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PROCPS_PIDS_NS_MNT ul_int Current mount namespace
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PROCPS_PIDS_NS_NET ul_int Current network namespace
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PROCPS_PIDS_NS_PID ul_int Current PID namespace
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PROCPS_PIDS_NS_USER ul_int Current user namespace
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PROCPS_PIDS_NS_UTS ul_int Current UTC namespace
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PROCPS_PIDS_OOM_ADJ s_int Out Of Memory Adjust
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PROCPS_PIDS_OOM_SCORE s_int Process Out Of Memory Score
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PROCPS_PIDS_PRIORITY s_int Kernel scheduling priority
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PROCPS_PIDS_PROCESSOR u_int Current CPU the process is running on
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PROCPS_PIDS_RSS sl_int Resident set size
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PROCPS_PIDS_RSS_RLIM ul_int Soft limit of RSS in bytes
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PROCPS_PIDS_RTPRIO ul_int Realtime priority
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PROCPS_PIDS_SCHED_CLASS ul_int Scheduling class, see \fBsched\fR(7)
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PROCPS_PIDS_SD_MACH str Systemd machine name
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PROCPS_PIDS_SD_OUID str Systemd owner user ID
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PROCPS_PIDS_SD_SEAT str Systemd seat
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PROCPS_PIDS_SD_SESS str Systemd session
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PROCPS_PIDS_SD_SLICE str Systemd slice
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PROCPS_PIDS_SD_UNIT str Systemd unit
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PROCPS_PIDS_SD_UUNIT str Systemd user unit
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PROCPS_PIDS_SIGBLOCKED str Bitmap of blocked signals
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PROCPS_PIDS_SIGCATCH str Bitmap of caught signals
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PROCPS_PIDS_SIGIGNORE str Bitmap of ignored signals
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PROCPS_PIDS_SIGNALS str Bitmap of pending signals
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PROCPS_PIDS_SIGPENDING str Bitmap of pending signals
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PROCPS_PIDS_STATE s_ch Process state codes
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PROCPS_PIDS_SUPGIDS str IDs of the supplementary groups
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PROCPS_PIDS_SUPGROUPS str Name of the supplementary groups
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PROCPS_PIDS_TICS_ALL ull_int Sum of user and system time
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PROCPS_PIDS_TICS_ALL_C ull_int Cumulative sum of user and system time
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PROCPS_PIDS_TICS_DELTA u_int Difference of sum of user and system time since last fetch
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PROCPS_PIDS_TICS_SYSTEM ull_int Amount of time process has been in system mode in ticks
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PROCPS_PIDS_TICS_SYSTEM_C ull_int ??
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PROCPS_PIDS_TICS_USER ull_int Amount of time process has been scheduled in user mode in ticks
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PROCPS_PIDS_TICS_USER_C ull_int ??
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PROCPS_PIDS_TIME_ALL ull_int ??
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PROCPS_PIDS_TIME_ELAPSED ull_int Total seconds since process started
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PROCPS_PIDS_TIME_START ull_int Time the process started
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PROCPS_PIDS_TTY s_int Controlling terminal ID number
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PROCPS_PIDS_TTY_NAME str Controlling terminal name
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PROCPS_PIDS_TTY_NUMBER str Controlling terminal number
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PROCPS_PIDS_VM_DATA ul_int ??
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PROCPS_PIDS_VM_EXE ul_int ??
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PROCPS_PIDS_VM_LIB ul_int ??
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PROCPS_PIDS_VM_LOCK ul_int ??
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PROCPS_PIDS_VM_RSS ul_int ??
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PROCPS_PIDS_VM_RSS_ANON ul_int ??
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PROCPS_PIDS_VM_RSS_FILE ul_int ??
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PROCPS_PIDS_VM_RSS_LOCKED ul_int ??
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PROCPS_PIDS_VM_RSS_SHARED ul_int ??
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PROCPS_PIDS_VM_SIZE ul_int ??
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PROCPS_PIDS_VM_STACK ul_int ??
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PROCPS_PIDS_VM_SWAP ul_int ??
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PROCPS_PIDS_VM_USED ul_int ??
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PROCPS_PIDS_VSIZE_PGS ul_int ??
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PROCPS_PIDS_WCHAN_ADDR ul_int Address of the kernel function in which the process is sleeping.
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PROCPS_PIDS_WCHAN_NAME str Name of the kernel function in which the process is sleeping.
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.TE
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.SS PIDS STACK
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The structure \fIstruct pids_stack\fR is a stack or list of information
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about a particular process. To extract the values out of the stack, the
|
||||
macro \fBPROCPS_PIDS_VAL\fR is used the following way
|
||||
.PP
|
||||
.RI \fBPROCPS_PIDS_VAL\fR( index , type , stack )
|
||||
where:
|
||||
.TP
|
||||
.I index
|
||||
is the index of the \fIitems\fR defined with the function
|
||||
.BR procps_pids_new (3)
|
||||
.TP
|
||||
.I type
|
||||
is one of the \fIitem_types\fR(see below)
|
||||
.TP
|
||||
.I stack
|
||||
is the stack returned by \fBprocps_pids_read_next()\fR.
|
||||
.SH SEE ALSO
|
||||
.BR proc (5),
|
||||
.BR sched (7),
|
||||
|
|
|
|||
|
|
@ -0,0 +1,87 @@
|
|||
.\" (C) Copyright 2016 Craig Small <csmall@enc.com.au>
|
||||
.\"
|
||||
.\" %%%LICENSE_START(LGPL_2.1+)
|
||||
.\" This manual 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 manual 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
|
||||
.\" %%%LICENSE_END
|
||||
.\"
|
||||
.TH PROCPS_PIDS_READ_OPEN 3 2016-04-19 "libproc-2"
|
||||
.\" Please adjust this date whenever revising the manpage.
|
||||
.\"
|
||||
.SH NAME
|
||||
procps_pids_read_open, procps_pids_read_next \-
|
||||
Load and iterate the PIDs information structure.
|
||||
.SH SYNOPSIS
|
||||
.B #include <proc/procps.h>
|
||||
.sp
|
||||
.BI "int procps_pids_read_open(struct procps_pidsinfo *" info ", enum pids_reap_type " which ");"
|
||||
.sp
|
||||
.BI "int procps_pids_read_next(struct procps_pidsinfo *" info ");"
|
||||
.sp
|
||||
.BI "int procps_pids_read_shut(struct procps_pidsinfo *" info ");"
|
||||
.sp
|
||||
Link with \fI\-lprocps\fP.
|
||||
|
||||
.SH DESCRIPTION
|
||||
This trio of functions is one method of reading and iterating through the
|
||||
procps PIDS information. The info structure first needs to be initialised by
|
||||
.BR procps_pids_new (3).
|
||||
|
||||
\fBprocps_pids_read_open()\fR is the function that will load the various
|
||||
files in the
|
||||
.BR proc (5)
|
||||
filesystem and fill the \fIinfo\fR structure with the parsed values.
|
||||
The function is able to parse only processes or also include threads, the
|
||||
option \fIwhich\fR can be set to \fBPROCPS_REAP_TASKS_ONLY\fR or
|
||||
\fBPROCPS_REAP_THREADS_TOO\fR to determine what is collected.
|
||||
|
||||
Assuming that \fBprocps_pids_read_open()\fR returns successfully, a program can
|
||||
then iterate through a loop using \fBprocps_pids_read_next()\fR
|
||||
and using the accessor methods described in
|
||||
.BR libproc (3).
|
||||
|
||||
One the loop has been completed or the information is no longer
|
||||
required, the function \fBprocps_pids_read_shut()\fR is used to
|
||||
free the information filled by \fBprocps_pids_read_open\fR.
|
||||
Note, the \fIinfo\fR structure is still allocated and requires
|
||||
.BR procps_pids_unref (3)
|
||||
to free \fIinfo\fR entirely.
|
||||
|
||||
.SH RETURN VALUE
|
||||
\fBprocps_pids_read_open()\fR and \fBprocps_pids_read_shut()\fR returns 0
|
||||
on success and one of the negative values below on failure.
|
||||
.PP
|
||||
\fBprocps_pids_read_next()\fR returns a pointer to struct pids_stack for
|
||||
the next process on success and NULL on failure.
|
||||
.TP
|
||||
.B -EINVAL
|
||||
One of the given parameters is incorrect.
|
||||
.TP
|
||||
.B -ENOMEM
|
||||
Unable to allocate memory for the structure.
|
||||
.B -1
|
||||
Unable to parse the
|
||||
.BR proc (5)
|
||||
filesystem.
|
||||
|
||||
.SH VERSIONS
|
||||
\fBprocps_pids_read_open()\fR, \fBprocps_pids_read_next()\fR and
|
||||
\fBprocps_pids_read_shut()\fR
|
||||
first appeared in libproc-2 version 0.0.
|
||||
|
||||
.SH SEE ALSO
|
||||
.BR libproc (3),
|
||||
.BR procps_pids_new (3),
|
||||
.BR procps_pids_unref (3),
|
||||
.BR proc (5).
|
||||
Loading…
Reference in New Issue