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process: start time (linux)

This commit is contained in:
Alastair Poole 2020-08-16 14:56:50 +01:00
parent 71aae93dc3
commit cf9d6dd95c
1 changed files with 34 additions and 2 deletions
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36
src/bin/system/process.c
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@ -254,9 +254,33 @@ _uid(int pid)
return uid;
}
static int64_t
_boot_time(void)
{
FILE *f;
int64_t boot_time;
char buf[4096];
double uptime = 0.0;
f = fopen("/proc/uptime", "r");
if (!f) return 0;
if (fgets(buf, sizeof(buf), f))
sscanf(buf, "%lf", &uptime);
else boot_time = 0;
fclose(f);
if (uptime > 0.0)
boot_time = time(NULL) - (time_t) uptime;
return boot_time;
}
typedef struct {
int pid, ppid, utime, stime, cutime, cstime;
int psr, pri, nice, numthreads;
long long int start_time;
char state;
unsigned int mem_rss, flags;
unsigned long mem_virt;
@ -269,6 +293,9 @@ _stat(const char *path, Stat *st)
FILE *f;
char line[4096];
int dummy, res = 0;
static int64_t boot_time = 0;
if (!boot_time) boot_time = _boot_time();
memset(st, 0, sizeof(Stat));
@ -283,11 +310,11 @@ _stat(const char *path, Stat *st)
strncpy(st->name, start, end - start);
st->name[end - start] = '\0';
res = sscanf(end + 2, "%c %d %d %d %d %d %u %u %u %u %u %d %d %d"
" %d %d %d %u %u %d %lu %u %u %u %u %u %u %u %d %d %d %d %u"
" %d %d %d %u %u %lld %lu %u %u %u %u %u %u %u %d %d %d %d %u"
" %d %d %d %d %d %d %d %d %d",
&st->state, &st->ppid, &dummy, &dummy, &dummy, &dummy, &st->flags,
&dummy, &dummy, &dummy, &dummy, &st->utime, &st->stime, &st->cutime,
&st->cstime, &st->pri, &st->nice, &st->numthreads, &dummy, &dummy,
&st->cstime, &st->pri, &st->nice, &st->numthreads, &dummy, &st->start_time,
&st->mem_virt, &st->mem_rss, &dummy, &dummy, &dummy, &dummy, &dummy,
&dummy, &dummy, &dummy, &dummy, &dummy, &dummy, &dummy,
&dummy, &dummy, &st->psr, &dummy, &dummy, &dummy, &dummy, &dummy);
@ -296,6 +323,9 @@ _stat(const char *path, Stat *st)
if (res != 42) return EINA_FALSE;
st->start_time /= sysconf(_SC_CLK_TCK);
st->start_time += boot_time;
return EINA_TRUE;
}
@ -329,6 +359,7 @@ _process_list_linux_get(void)
p->ppid = st.ppid;
p->uid = _uid(pid);
p->cpu_id = st.psr;
p->start = st.start_time;
p->state = _process_state_name(st.state);
p->cpu_time = st.utime + st.stime;
p->nice = st.nice;
@ -391,6 +422,7 @@ proc_info_by_pid(int pid)
p->ppid = st.ppid;
p->uid = _uid(pid);
p->cpu_id = st.psr;
p->start = st.start_time;
p->state = _process_state_name(st.state);
p->cpu_time = st.utime + st.stime;
p->priority = st.pri;