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| author | Denys Vlasenko | 2009-09-19 22:29:42 +0200 |
|---|---|---|
| committer | Denys Vlasenko | 2009-09-19 22:29:42 +0200 |
| commit | b410d4ada73e9ebb30b2b50266a13c30479f5f21 (patch) | |
| tree | 0d842b9c0885d1cf06fa6aa67a720b31b89cca55 /libbb/procps.c | |
| parent | f00cfdfae53d8ef623238ecb1001969b5f649cbd (diff) | |
| download | busybox-b410d4ada73e9ebb30b2b50266a13c30479f5f21.zip busybox-b410d4ada73e9ebb30b2b50266a13c30479f5f21.tar.gz | |
ps,top: add an option to show threads. +260 bytes of code
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/procps.c')
| -rw-r--r-- | libbb/procps.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/libbb/procps.c b/libbb/procps.c index 9746617..845a214 100644 --- a/libbb/procps.c +++ b/libbb/procps.c @@ -110,6 +110,10 @@ static procps_status_t* FAST_FUNC alloc_procps_scan(void) void FAST_FUNC free_procps_scan(procps_status_t* sp) { closedir(sp->dir); +#if ENABLE_FEATURE_SHOW_THREADS + if (sp->task_dir) + closedir(sp->task_dir); +#endif free(sp->argv0); free(sp->exe); IF_SELINUX(free(sp->context);) @@ -189,14 +193,35 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags) sp = alloc_procps_scan(); for (;;) { +#if ENABLE_FEATURE_SHOW_THREADS + if ((flags & PSSCAN_TASKS) && sp->task_dir) { + entry = readdir(sp->task_dir); + if (entry) + goto got_entry; + closedir(sp->task_dir); + sp->task_dir = NULL; + } +#endif entry = readdir(sp->dir); if (entry == NULL) { free_procps_scan(sp); return NULL; } + IF_FEATURE_SHOW_THREADS(got_entry:) pid = bb_strtou(entry->d_name, NULL, 10); if (errno) continue; +#if ENABLE_FEATURE_SHOW_THREADS + if ((flags & PSSCAN_TASKS) && !sp->task_dir) { + /* 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); + continue; + } +#endif /* After this point we have to break, not continue * ("continue" would mean that current /proc/NNN |