diff options
Diffstat (limited to 'src/bootchart/store.c')
| -rw-r--r-- | src/bootchart/store.c | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/bootchart/store.c b/src/bootchart/store.c index dfa681f223..3900936acf 100644 --- a/src/bootchart/store.c +++ b/src/bootchart/store.c @@ -108,8 +108,8 @@ static int pid_cmdline_strscpy(char *buffer, size_t buf_len, int pid) { } void log_sample(int sample, struct list_sample_data **ptr) { - static int vmstat; - static int schedstat; + static int vmstat = -1; + static int schedstat = -1; char buf[4096]; char key[256]; char val[256]; @@ -140,7 +140,7 @@ void log_sample(int sample, struct list_sample_data **ptr) { rewinddir(proc); } - if (!vmstat) { + if (vmstat < 0) { /* block stuff */ vmstat = openat(procfd, "vmstat", O_RDONLY); if (vmstat == -1) { @@ -152,6 +152,7 @@ void log_sample(int sample, struct list_sample_data **ptr) { n = pread(vmstat, buf, sizeof(buf) - 1, 0); if (n <= 0) { close(vmstat); + vmstat = -1; return; } buf[n] = '\0'; @@ -172,7 +173,7 @@ vmstat_next: break; } - if (!schedstat) { + if (schedstat < 0) { /* overall CPU utilization */ schedstat = openat(procfd, "schedstat", O_RDONLY); if (schedstat == -1) { @@ -184,6 +185,7 @@ vmstat_next: n = pread(schedstat, buf, sizeof(buf) - 1, 0); if (n <= 0) { close(schedstat); + schedstat = -1; return; } buf[n] = '\0'; @@ -260,6 +262,8 @@ schedstat_next: } ps = ps->next_ps; ps->pid = pid; + ps->sched = -1; + ps->schedstat = -1; ps->sample = new0(struct ps_sched_struct, 1); if (!ps->sample) { @@ -276,7 +280,7 @@ schedstat_next: ps->sample->waittime = atoll(wt); /* get name, start time */ - if (!ps->sched) { + if (ps->sched < 0) { sprintf(filename, "%d/sched", pid); ps->sched = openat(procfd, filename, O_RDONLY); if (ps->sched == -1) @@ -286,6 +290,7 @@ schedstat_next: s = pread(ps->sched, buf, sizeof(buf) - 1, 0); if (s <= 0) { close(ps->sched); + ps->sched = -1; continue; } buf[s] = '\0'; @@ -377,7 +382,7 @@ schedstat_next: * iteration */ /* rt, wt */ - if (!ps->schedstat) { + if (ps->schedstat < 0) { sprintf(filename, "%d/schedstat", pid); ps->schedstat = openat(procfd, filename, O_RDONLY); if (ps->schedstat == -1) @@ -387,8 +392,11 @@ schedstat_next: if (s <= 0) { /* clean up our file descriptors - assume that the process exited */ close(ps->schedstat); - if (ps->sched) + ps->schedstat = -1; + if (ps->sched) { close(ps->sched); + ps->sched = -1; + } //if (ps->smaps) // fclose(ps->smaps); continue; @@ -488,8 +496,11 @@ catch_rename: if (s <= 0) { /* clean up file descriptors */ close(ps->sched); - if (ps->schedstat) + ps->sched = -1; + if (ps->schedstat) { close(ps->schedstat); + ps->schedstat = -1; + } //if (ps->smaps) // fclose(ps->smaps); continue; |