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ps thread support

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This commit is contained in:
albert
2003-09-20 08:29:55 +00:00
parent 4456afd68a
commit c462dcfad5
16 changed files with 295 additions and 86 deletions
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25
proc/readproc.h
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@@ -26,6 +26,11 @@ EXTERN_C_BEGIN
lu start_time, vsize, wchan, nswap, cnswap,
*/
// This is to help document a transition from pid to tgid/tid caused
// by the introduction of thread support. It is used in cases where
// neither tgid nor tid seemed correct. (in other words, FIXME)
#define XXXID tid
/* Basic data structure which holds all information we can get about a process.
* (unless otherwise specified, fields are read from /proc/#/stat)
*
@@ -34,7 +39,7 @@ EXTERN_C_BEGIN
typedef struct proc_t {
// 1st 16 bytes
int
pid, /* process id */
tid, /* process id */
ppid; /* pid of parent process */
unsigned
pcpu; /* %CPU usage (is not filled in by readproc!!!) */
@@ -144,10 +149,17 @@ typedef struct proc_t {
#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
#define PROCPATHLEN 64 // must hold /proc/2000222000/task/2000222000/cmdline
typedef struct PROCTAB {
DIR* procfs;
int(*finder)(struct PROCTAB *restrict const, proc_t *restrict const, char *restrict const);
proc_t*(*reader)(struct PROCTAB *restrict const, proc_t *restrict const, char *restrict const);
DIR* taskdir; // for threads
int did_fake; // used when taskdir is missing
int(*finder)(struct PROCTAB *restrict const, proc_t *restrict const);
proc_t*(*reader)(struct PROCTAB *restrict const, proc_t *restrict const);
int(*taskfinder)(struct PROCTAB *restrict const, const proc_t *restrict const, proc_t *restrict const, char *restrict const);
proc_t*(*taskreader)(struct PROCTAB *restrict const, const proc_t *restrict const, proc_t *restrict const, char *restrict const);
unsigned flags;
pid_t* pids; /* pids of the procs */
uid_t* uids; /* uids of procs */
@@ -155,6 +167,8 @@ typedef struct PROCTAB {
int i; // generic
unsigned u; // generic
void * vp; // generic
char path[PROCPATHLEN]; // must hold /proc/2000222000/task/2000222000/cmdline
unsigned pathlen; // length of string in the above (w/o '\0')
} PROCTAB;
// initialize a PROCTAB structure holding needed call-to-call persistent data
@@ -172,7 +186,8 @@ extern proc_t** readproctab(int flags, ... /* same as openproc */ );
extern void closeproc(PROCTAB* PT);
// retrieve the next process matching the criteria set by the openproc()
extern proc_t* readproc(PROCTAB *restrict const PT, proc_t *restrict const return_buf);
extern proc_t* readproc(PROCTAB *restrict const PT, proc_t *restrict p);
extern proc_t* readtask(PROCTAB *restrict const PT, const proc_t *restrict const p, proc_t *restrict t);
// warning: interface may change
extern int read_cmdline(char *restrict const dst, unsigned sz, unsigned pid);
@@ -207,8 +222,6 @@ extern void freeproc(proc_t* p);
#define PROC_FILLWCHAN 0x0080 /* look up WCHAN name */
#define PROC_FILLARG 0x0100 /* alloc and fill in `cmdline' */
#define PROC_FILLANY 0x0000 /* either stat or status will do */
/* Obsolete, consider only processes with one of the passed: */
#define PROC_PID 0x1000 /* process id numbers ( 0 terminated) */
#define PROC_UID 0x4000 /* user id numbers ( length needed ) */