* Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru>
* SELinux support: (c) 2007 by Yuichi Nakamura <ynakam@hitachisoft.jp>
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
#include "libbb.h"
free(sp);
}
-#if ENABLE_FEATURE_TOPMEM
+#if ENABLE_FEATURE_TOPMEM || ENABLE_PMAP
static unsigned long fast_strtoul_16(char **endptr)
{
unsigned char c;
*endptr = str; /* We skip trailing space! */
return n;
}
-/* TOPMEM uses fast_strtoul_10, so... */
-# undef ENABLE_FEATURE_FAST_TOP
-# define ENABLE_FEATURE_FAST_TOP 1
#endif
-#if ENABLE_FEATURE_FAST_TOP
+#if ENABLE_FEATURE_FAST_TOP || ENABLE_FEATURE_TOPMEM || ENABLE_PMAP
/* We cut a lot of corners here for speed */
static unsigned long fast_strtoul_10(char **endptr)
{
return n;
}
+# if ENABLE_FEATURE_FAST_TOP
static long fast_strtol_10(char **endptr)
{
if (**endptr != '-')
(*endptr)++;
return - (long)fast_strtoul_10(endptr);
}
+# endif
static char *skip_fields(char *str, int count)
{
}
#endif
+#if ENABLE_FEATURE_TOPMEM || ENABLE_PMAP
+int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total,
+ void (*cb)(struct smaprec *, void *), void *data)
+{
+ FILE *file;
+ struct smaprec currec;
+ char filename[sizeof("/proc/%u/smaps") + sizeof(int)*3];
+ char buf[PROCPS_BUFSIZE];
+#if !ENABLE_PMAP
+ void (*cb)(struct smaprec *, void *) = NULL;
+ void *data = NULL;
+#endif
+
+ sprintf(filename, "/proc/%u/smaps", (int)pid);
+
+ file = fopen_for_read(filename);
+ if (!file)
+ return 1;
+
+ memset(&currec, 0, sizeof(currec));
+ while (fgets(buf, PROCPS_BUFSIZE, file)) {
+ // Each mapping datum has this form:
+ // f7d29000-f7d39000 rw-s ADR M:m OFS FILE
+ // Size: nnn kB
+ // Rss: nnn kB
+ // .....
+
+ char *tp = buf, *p;
+
+#define SCAN(S, X) \
+ if (strncmp(tp, S, sizeof(S)-1) == 0) { \
+ tp = skip_whitespace(tp + sizeof(S)-1); \
+ total->X += currec.X = fast_strtoul_10(&tp); \
+ continue; \
+ }
+ if (cb) {
+ SCAN("Pss:" , smap_pss );
+ SCAN("Swap:" , smap_swap );
+ }
+ SCAN("Private_Dirty:", private_dirty);
+ SCAN("Private_Clean:", private_clean);
+ SCAN("Shared_Dirty:" , shared_dirty );
+ SCAN("Shared_Clean:" , shared_clean );
+#undef SCAN
+ tp = strchr(buf, '-');
+ if (tp) {
+ // We reached next mapping - the line of this form:
+ // f7d29000-f7d39000 rw-s ADR M:m OFS FILE
+
+ if (cb) {
+ /* If we have a previous record, there's nothing more
+ * for it, call the callback and clear currec
+ */
+ if (currec.smap_size)
+ cb(&currec, data);
+ free(currec.smap_name);
+ }
+ memset(&currec, 0, sizeof(currec));
+
+ *tp = ' ';
+ tp = buf;
+ currec.smap_start = fast_strtoul_16(&tp);
+ currec.smap_size = (fast_strtoul_16(&tp) - currec.smap_start) >> 10;
+
+ strncpy(currec.smap_mode, tp, sizeof(currec.smap_mode)-1);
+
+ // skipping "rw-s ADR M:m OFS "
+ tp = skip_whitespace(skip_fields(tp, 4));
+ // filter out /dev/something (something != zero)
+ if (strncmp(tp, "/dev/", 5) != 0 || strcmp(tp, "/dev/zero\n") == 0) {
+ if (currec.smap_mode[1] == 'w') {
+ currec.mapped_rw = currec.smap_size;
+ total->mapped_rw += currec.smap_size;
+ } else if (currec.smap_mode[1] == '-') {
+ currec.mapped_ro = currec.smap_size;
+ total->mapped_ro += currec.smap_size;
+ }
+ }
+
+ if (strcmp(tp, "[stack]\n") == 0)
+ total->stack += currec.smap_size;
+ if (cb) {
+ p = skip_non_whitespace(tp);
+ if (p == tp) {
+ currec.smap_name = xstrdup(" [ anon ]");
+ } else {
+ *p = '\0';
+ currec.smap_name = xstrdup(tp);
+ }
+ }
+ total->smap_size += currec.smap_size;
+ }
+ }
+ fclose(file);
+
+ if (cb) {
+ if (currec.smap_size)
+ cb(&currec, data);
+ free(currec.smap_name);
+ }
+
+ return 0;
+}
+#endif
+
void BUG_comm_size(void);
procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
{
goto got_entry;
closedir(sp->task_dir);
sp->task_dir = NULL;
+ sp->main_thread_pid = 0;
}
#endif
entry = readdir(sp->dir);
char task_dir[sizeof("/proc/%u/task") + sizeof(int)*3];
sprintf(task_dir, "/proc/%u/task", pid);
sp->task_dir = xopendir(task_dir);
+ sp->main_thread_pid = pid;
continue;
}
#endif
//FIXME: is it safe to assume this field exists?
sp->last_seen_on_cpu = fast_strtoul_10(&cp);
# endif
-#endif /* end of !ENABLE_FEATURE_TOP_SMP_PROCESS */
+#endif /* FEATURE_FAST_TOP */
#if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
sp->niceness = tasknice;
}
#if ENABLE_FEATURE_TOPMEM
- if (flags & (PSSCAN_SMAPS)) {
- FILE *file;
-
- strcpy(filename_tail, "smaps");
- file = fopen_for_read(filename);
- if (file) {
- while (fgets(buf, sizeof(buf), file)) {
- unsigned long sz;
- char *tp;
- char w;
-#define SCAN(str, name) \
- if (strncmp(buf, str, sizeof(str)-1) == 0) { \
- tp = skip_whitespace(buf + sizeof(str)-1); \
- sp->name += fast_strtoul_10(&tp); \
- continue; \
- }
- SCAN("Shared_Clean:" , shared_clean );
- SCAN("Shared_Dirty:" , shared_dirty );
- SCAN("Private_Clean:", private_clean);
- SCAN("Private_Dirty:", private_dirty);
-#undef SCAN
- // f7d29000-f7d39000 rw-s ADR M:m OFS FILE
- tp = strchr(buf, '-');
- if (tp) {
- *tp = ' ';
- tp = buf;
- sz = fast_strtoul_16(&tp); /* start */
- sz = (fast_strtoul_16(&tp) - sz) >> 10; /* end - start */
- // tp -> "rw-s" string
- w = tp[1];
- // skipping "rw-s ADR M:m OFS "
- tp = skip_whitespace(skip_fields(tp, 4));
- // filter out /dev/something (something != zero)
- if (strncmp(tp, "/dev/", 5) != 0 || strcmp(tp, "/dev/zero\n") == 0) {
- if (w == 'w') {
- sp->mapped_rw += sz;
- } else if (w == '-') {
- sp->mapped_ro += sz;
- }
- }
-//else printf("DROPPING %s (%s)\n", buf, tp);
- if (strcmp(tp, "[stack]\n") == 0)
- sp->stack += sz;
- }
- }
- fclose(file);
- }
- }
+ if (flags & PSSCAN_SMAPS)
+ procps_read_smaps(pid, &sp->smaps, NULL, NULL);
#endif /* TOPMEM */
#if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
if (flags & PSSCAN_RUIDGID) {
projects / oweals / busybox.git / blobdiff