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top: fix CPU% for thread display. Closes 4081

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2011-08-28 11:57:36 +02:00
parent abc33ac8b2
commit 2390109dcb
1 changed files with 19 additions and 15 deletions
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34
libbb/procps.c
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@ -284,27 +284,25 @@ int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total,
void BUG_comm_size(void);
procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
{
struct dirent *entry;
char buf[PROCPS_BUFSIZE];
char filename[sizeof("/proc//cmdline") + sizeof(int)*3];
char *filename_tail;
long tasknice;
unsigned pid;
int n;
struct stat sb;
if (!sp)
sp = alloc_procps_scan();
for (;;) {
struct dirent *entry;
char buf[PROCPS_BUFSIZE];
long tasknice;
unsigned pid;
int n;
char filename[sizeof("/proc/%u/task/%u/cmdline") + sizeof(int)*3 * 2];
char *filename_tail;
#if ENABLE_FEATURE_SHOW_THREADS
if ((flags & PSSCAN_TASKS) && sp->task_dir) {
if (sp->task_dir) {
entry = readdir(sp->task_dir);
if (entry)
goto got_entry;
closedir(sp->task_dir);
sp->task_dir = NULL;
sp->main_thread_pid = 0;
}
#endif
entry = readdir(sp->dir);
@ -321,9 +319,9 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
/* We found another /proc/PID. Do not use it,
* there will be /proc/PID/task/PID (same PID!),
* so just go ahead and dive into /proc/PID/task. */
char task_dir[sizeof("/proc/%u/task") + sizeof(int)*3];
sprintf(task_dir, "/proc/%u/task", pid);
sp->task_dir = xopendir(task_dir);
sprintf(filename, "/proc/%u/task", pid);
/* Note: if opendir fails, we just go to next /proc/XXX */
sp->task_dir = opendir(filename);
sp->main_thread_pid = pid;
continue;
}
@ -347,9 +345,15 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
}
#endif
filename_tail = filename + sprintf(filename, "/proc/%u/", pid);
#if ENABLE_FEATURE_SHOW_THREADS
if (sp->task_dir)
filename_tail = filename + sprintf(filename, "/proc/%u/task/%u/", sp->main_thread_pid, pid);
else
#endif
filename_tail = filename + sprintf(filename, "/proc/%u/", pid);
if (flags & PSSCAN_UIDGID) {
struct stat sb;
if (stat(filename, &sb))
continue; /* process probably exited */
/* Effective UID/GID, not real */