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Add missed oom support to libproc

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Add missed oom support to libproc
Signed-off-by: Werner Fink <werner@suse.de>
This commit is contained in:
Werner Fink 2011-04-15 15:52:40 +02:00
parent 3ec6a27e8a
commit e646984924
2 changed files with 26 additions and 1 deletions
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22
proc/readproc.c
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@ -365,6 +365,19 @@ LEAVE(0x220);
}
///////////////////////////////////////////////////////////////////////
#ifdef ZAP_SUSEONLY
static void oomscore2proc(const char* S, proc_t *restrict P)
{
sscanf(S, "%d", &P->oom_score);
}
static void oomadj2proc(const char* S, proc_t *restrict P)
{
sscanf(S, "%d", &P->oom_adj);
}
#endif
///////////////////////////////////////////////////////////////////////
// Reads /proc/*/stat files, being careful not to trip over processes with
// names like ":-) 1 2 3 4 5 6".
@ -637,7 +650,14 @@ static proc_t* simple_readproc(PROCTAB *restrict const PT, proc_t *restrict cons
p->environ = file2strvec(path, "environ");
else
p->environ = NULL;
#ifdef ZAP_SUSEONLY
if (unlikely(flags & PROC_FILLOOM)) {
if (likely( file2str(path, "oom_score", sbuf, sizeof sbuf) != -1 ))
oomscore2proc(sbuf, p);
if (likely( file2str(path, "oom_adj", sbuf, sizeof sbuf) != -1 ))
oomadj2proc(sbuf, p);
} /* struct has been zeroed out before, so no worries about clearing garbage here */
#endif
if(linux_version_code>=LINUX_VERSION(2,6,24) && (flags & PROC_FILLCGROUP))
p->cgroup = file2strvec(path, "cgroup"); /* read /proc/#/cgroup */
else

5
proc/readproc.h
View File

@ -140,6 +140,10 @@ typedef struct proc_t {
tpgid, // stat terminal process group id
exit_signal, // stat might not be SIGCHLD
processor; // stat current (or most recent?) CPU
#ifdef ZAP_SUSEONLY
int oom_score, // oom_score (badness for OOM killer)
oom_adj; // oom_adj (adjustment to OOM score)
#endif
char **cgroup; // cgroup current cgroup, looks like a classic filepath
} proc_t;
@ -239,6 +243,7 @@ extern proc_t * get_proc_stats(pid_t pid, proc_t *p);
#define PROC_FILLWCHAN 0x0080 // look up WCHAN name
#define PROC_FILLARG 0x0100 // alloc and fill in `cmdline'
#define PROC_FILLCGROUP 0x0200 // alloc and fill in `cgroup`
#define PROC_FILLOOM 0x0400 // alloc and fill in oom_score, oom_adj
#define PROC_LOOSE_TASKS 0x2000 // threat threads as if they were processes