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top: exploit those new library task/threads provisions

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This patch adapts top to exploit the new <proc/pids.h>
interface. And it appears to have reduced top's weight
by a considerable margin. Gone were the sort callbacks
and manipulation of those library flags. Gosh, all top
needs to do now is track some enumerators of interest.

[ whoa, wait just a damn minute. it now appears some ]
[ that weight loss was solely the result of a theft. ]

[ jeeze, we turn our back for just a minute & newlib ]
[ up & steals our pids hashing logic for his history ]
[ needs. oh well, i guess life's just not that fair. ]

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner
2015-08-19 00:00:00 -05:00
committed by Craig Small
parent 7e6a371d8a
commit 77dc22b910
4 changed files with 455 additions and 838 deletions
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65
top/top.h
View File

@@ -20,6 +20,8 @@
#ifndef _Itop
#define _Itop
#include <proc/pids.h>
#include <proc/readstat.h>
#include "../proc/readproc.h"
/* Defines represented in configure.ac ----------------------------- */
@@ -31,7 +33,6 @@
//#define SIGNALS_LESS /* favor reduced signal load over response */
/* Development/Debugging defines ----------------------------------- */
//#define ATEOJ_RPTHSH /* report on hash specifics, at end-of-job */
//#define ATEOJ_RPTSTD /* report on misc stuff, at end-of-job */
//#define CASEUP_HEXES /* show any hex values in upper case */
//#define CASEUP_SUFIX /* show time/mem/cnts suffix in upper case */
@@ -41,7 +42,6 @@
//#define INSP_SAVEBUF /* preserve 'Insp_buf' contents in a file */
//#define INSP_SLIDE_1 /* when scrolling left/right don't move 8 */
//#define MEMGRAPH_OLD /* don't use 'available' when graphing Mem */
//#define OFF_HST_HASH /* use BOTH qsort+bsrch vs. hashing scheme */
//#define OFF_NUMASKIP /* do NOT skip numa nodes if discontinuous */
//#define OFF_SCROLLBK /* disable tty emulators scrollback buffer */
//#define OFF_STDERROR /* disable our stderr buffering (redirect) */
@@ -223,39 +223,6 @@ typedef long long SIC_t;
/* Sort support, callback function signature */
typedef int (*QFP_t)(const void *, const void *);
/* This structure consolidates the information that's used
in a variety of display roles. */
typedef struct FLD_t {
int width; // field width, if applicable
int scale; // scaled target, if applicable
const int align; // the default column alignment flag
const QFP_t sort; // sort function
const int lflg; // PROC_FILLxxx flag(s) needed by this field
} FLD_t;
#ifdef OFF_HST_HASH
/* This structure supports 'history' processing and records the
bare minimum of needed information from one frame to the next --
we don't calc and save data that goes unused like the old top. */
typedef struct HST_t {
TIC_t tics; // last frame's tics count
unsigned long maj, min; // last frame's maj/min_flt counts
int pid; // record 'key'
} HST_t;
#else
/* This structure supports 'history' processing and records the bare
minimum of needed information from one frame to the next -- we do
not calc and save data that goes unused like the old top nor will
we incur the additional overhead of sort to support binary search
(or worse, a friggin' for loop) when retrievals become necessary! */
typedef struct HST_t {
TIC_t tics; // last frame's tics count
unsigned long maj, min; // last frame's maj/min_flt counts
int pid; // record 'key'
int lnk; // next on hash chain
} HST_t;
#endif
/* /////////////////////////////////////////////////////////////// */
/* Special Section: multiple windows/field groups --------------- */
/* ( kind of a header within a header: constants, types & macros ) */
@@ -397,7 +364,7 @@ typedef struct WIN_t {
char *osel_prt; // other stuff printable as status line
char *findstr; // window's current/active search string
int findlen; // above's strlen, without call overhead
proc_t **ppt; // this window's proc_t ptr array
struct pids_stack **ppt; // this window's stacks ptr array
struct WIN_t *next, // next window in window stack
*prev; // prior window in window stack
} WIN_t;
@@ -606,9 +573,6 @@ typedef struct WIN_t {
/*###### For Piece of mind #############################################*/
/* just sanity check(s)... */
#if defined(ATEOJ_RPTHSH) && defined(OFF_HST_HASH)
# error 'ATEOJ_RPTHSH' conflicts with 'OFF_HST_HASH'
#endif
#if defined(RECALL_FIXED) && defined(TERMIOS_ONLY)
# error 'RECALL_FIXED' conflicts with 'TERMIOS_ONLY'
#endif
@@ -633,9 +597,6 @@ typedef struct WIN_t {
/* These 'prototypes' are here exclusively for documentation purposes. */
/* ( see the find_string function for the one true required protoype ) */
/*------ Sort callbacks ------------------------------------------------*/
/* for each possible field, in the form of: */
/*atic int sort_EU_XXX (const proc_t **P, const proc_t **Q); */
/*------ Tiny useful routine(s) ----------------------------------------*/
//atic const char *fmtmk (const char *fmts, ...);
//atic inline char *scat (char *dst, const char *src);
@@ -672,7 +633,6 @@ typedef struct WIN_t {
//atic void osel_clear (WIN_t *q);
//atic inline int osel_matched (const WIN_t *q, FLG_t enu, const char *str);
//atic const char *user_certify (WIN_t *q, const char *str, char typ);
//atic inline int user_matched (const WIN_t *q, const proc_t *p);
/*------ Basic Formatting support --------------------------------------*/
//atic inline const char *justify_pad (const char *str, int width, int justr);
//atic inline const char *make_chr (const char ch, int width, int justr);
@@ -693,13 +653,6 @@ typedef struct WIN_t {
//atic void zap_fieldstab (void);
/*------ Library Interface ---------------------------------------------*/
//atic void cpus_refresh (void);
#ifdef OFF_HST_HASH
//atic inline HST_t *hstbsrch (HST_t *hst, int max, int pid);
#else
//atic inline HST_t *hstget (int pid);
//atic inline void hstput (unsigned idx);
#endif
//atic void procs_hlp (proc_t *p);
//atic void procs_refresh (void);
//atic void sysinfo_refresh (int forced);
/*------ Inspect Other Output ------------------------------------------*/
@@ -713,7 +666,7 @@ typedef struct WIN_t {
//atic void insp_find_str (int ch, int *col, int *row);
//atic inline void insp_make_row (int col, int row);
//atic void insp_show_pgs (int col, int row, int max);
//atic int insp_view_choice (proc_t *obj);
//atic int insp_view_choice (struct pids_stack *obj);
//atic void inspection_utility (int pid);
/*------ Startup routines ----------------------------------------------*/
//atic void before (char *me);
@@ -731,6 +684,7 @@ typedef struct WIN_t {
//atic void wins_reflag (int what, int flg);
//atic void wins_stage_1 (void);
//atic void wins_stage_2 (void);
//atic inline int wins_usrselect (const WIN_t *q, struct pids_stack *p);
/*------ Interactive Input Tertiary support ----------------------------*/
//atic inline int find_ofs (const WIN_t *q, const char *buf);
//atic void find_string (int ch);
@@ -745,16 +699,13 @@ typedef struct WIN_t {
//atic void keys_xtra (int ch);
/*------ Forest View support -------------------------------------------*/
//atic void forest_adds (const int self, int level);
#ifndef TREE_SCANALL
//atic int forest_based (const proc_t **x, const proc_t **y);
#endif
//atic void forest_create (WIN_t *q);
//atic inline const char *forest_display (const WIN_t *q, const proc_t *p);
//atic inline const char *forest_display (const WIN_t *q, const int idx);
/*------ Main Screen routines ------------------------------------------*/
//atic void do_key (int ch);
//atic void summary_hlp (CPU_t *cpu, const char *pfx);
//atic void summary_hlp (struct procps_jiffs_hist *cpu, const char *pfx);
//atic void summary_show (void);
//atic const char *task_show (const WIN_t *q, const proc_t *p);
//atic const char *task_show (const WIN_t *q, const int idx);
//atic int window_show (WIN_t *q, int wmax);
/*------ Entry point plus two ------------------------------------------*/
//atic void frame_hlp (int wix, int max);