static void
ThreadedCalculateProcessCreationTimestamp(void *aClosure)
{
PRTime now = PR_Now();
gProcessCreationTimestamp = 0;
long hz = sysconf(_SC_CLK_TCK);
if (!hz)
return;
char thread_stat[40];
sprintf(thread_stat, "/proc/self/task/%d/stat", (pid_t) syscall(__NR_gettid));
PRTime interval = (JiffiesSinceBoot(thread_stat) - JiffiesSinceBoot("/proc/self/stat")) * PR_USEC_PER_SEC / hz;;
gProcessCreationTimestamp = now - interval;
}
static void
ComputeProcessUptimeThread(void *aTime)
{
uint64_t *uptime = static_cast<uint64_t *>(aTime);
long hz = sysconf(_SC_CLK_TCK);
*uptime = 0;
if (!hz)
return;
char threadStat[40];
sprintf(threadStat, "/proc/self/task/%d/stat", (pid_t) syscall(__NR_gettid));
uint64_t threadJiffies = JiffiesSinceBoot(threadStat);
uint64_t selfJiffies = JiffiesSinceBoot("/proc/self/stat");
if (!threadJiffies || !selfJiffies)
return;
*uptime = ((threadJiffies - selfJiffies) * kNsPerSec) / hz;
}