2 * Copyright 2008-2011 Novell Inc
3 * Copyright 2011 Xamarin Inc
7 #include "utils/mono-proclib.h"
22 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
23 #include <sys/errno.h>
24 #include <sys/param.h>
25 #include <sys/types.h>
26 #include <sys/sysctl.h>
28 #if defined(__APPLE__)
29 #include <mach/mach.h>
31 #ifdef HAVE_SYS_USER_H
34 #ifdef HAVE_STRUCT_KINFO_PROC_KP_PROC
35 # define kinfo_pid_member kp_proc.p_pid
36 # define kinfo_name_member kp_proc.p_comm
37 #elif defined(__OpenBSD__)
38 # define kinfo_pid_member p_pid
39 # define kinfo_name_member p_comm
41 #define kinfo_pid_member ki_pid
42 #define kinfo_name_member ki_comm
49 * @size: a pointer to a location where the size of the returned array is stored
51 * Return an array of pid values for the processes currently running on the system.
52 * The size of the array is stored in @size.
55 mono_process_list (int *size)
61 size_t data_len = sizeof (struct kinfo_proc2) * 400;
62 struct kinfo_proc2 *processes = malloc (data_len);
65 size_t data_len = sizeof (struct kinfo_proc) * 16;
66 struct kinfo_proc *processes;
68 #endif /* KERN_PROC2 */
80 mib [2] = KERN_PROC_ALL;
82 mib [4] = sizeof(struct kinfo_proc2);
83 mib [5] = 400; /* XXX */
85 res = sysctl (mib, 6, processes, &data_len, NULL, 0);
95 mib [2] = KERN_PROC_ALL;
98 res = sysctl (mib, 4, NULL, &data_len, NULL, 0);
101 processes = malloc (data_len);
102 res = sysctl (mib, 4, processes, &data_len, NULL, 0);
112 #endif /* KERN_PROC2 */
115 res = data_len/sizeof (struct kinfo_proc2);
117 res = data_len/sizeof (struct kinfo_proc);
118 #endif /* KERN_PROC2 */
119 buf = g_realloc (buf, res * sizeof (void*));
120 for (i = 0; i < res; ++i)
121 buf [i] = GINT_TO_POINTER (processes [i].kinfo_pid_member);
126 #elif defined(__HAIKU__)
127 /* FIXME: Add back the code from 9185fcc305e43428d0f40f3ee37c8a405d41c9ae */
128 g_assert_not_reached ();
135 GDir *dir = g_dir_open ("/proc/", 0, NULL);
141 while ((name = g_dir_read_name (dir))) {
144 pid = strtol (name, &nend, 10);
145 if (pid <= 0 || nend == name || *nend)
152 buf = g_realloc (buf, count * sizeof (void*));
154 buf [i++] = GINT_TO_POINTER (pid);
163 static G_GNUC_UNUSED char*
164 get_pid_status_item_buf (int pid, const char *item, char *rbuf, int blen, MonoProcessError *error)
169 int len = strlen (item);
171 g_snprintf (buf, sizeof (buf), "/proc/%d/status", pid);
172 f = fopen (buf, "r");
175 *error = MONO_PROCESS_ERROR_NOT_FOUND;
178 while ((s = fgets (buf, blen, f))) {
181 if (strncmp (buf, item, len))
184 while (g_ascii_isspace (*s)) s++;
187 while (g_ascii_isspace (*s)) s++;
190 strncpy (rbuf, s, MIN (len, blen));
191 rbuf [MIN (len, blen) - 1] = 0;
193 *error = MONO_PROCESS_ERROR_NONE;
198 *error = MONO_PROCESS_ERROR_OTHER;
205 #define KINFO_PROC struct kinfo_proc2
207 #define KINFO_PROC struct kinfo_proc
211 sysctl_kinfo_proc (gpointer pid, KINFO_PROC* processi)
214 size_t data_len = sizeof (KINFO_PROC);
219 mib [1] = KERN_PROC2;
220 mib [2] = KERN_PROC_PID;
221 mib [3] = GPOINTER_TO_UINT (pid);
222 mib [4] = sizeof(KINFO_PROC);
223 mib [5] = 400; /* XXX */
225 res = sysctl (mib, 6, processi, &data_len, NULL, 0);
230 mib [2] = KERN_PROC_PID;
231 mib [3] = GPOINTER_TO_UINT (pid);
233 res = sysctl (mib, 4, processi, &data_len, NULL, 0);
234 #endif /* KERN_PROC2 */
236 if (res < 0 || data_len != sizeof (KINFO_PROC))
241 #endif /* USE_SYSCTL */
244 * mono_process_get_name:
245 * @pid: pid of the process
246 * @buf: byte buffer where to store the name of the prcoess
247 * @len: size of the buffer @buf
249 * Return the name of the process identified by @pid, storing it
250 * inside @buf for a maximum of len bytes (including the terminating 0).
253 mono_process_get_name (gpointer pid, char *buf, int len)
258 memset (buf, 0, len);
260 if (sysctl_kinfo_proc (pid, &processi))
261 strncpy (buf, processi.kinfo_name_member, len - 1);
269 sprintf (fname, "/proc/%d/cmdline", GPOINTER_TO_INT (pid));
271 file = fopen (fname, "r");
274 r = fread (buf, 1, len - 1, file);
277 p = strrchr (buf, '/');
281 return get_pid_status_item_buf (GPOINTER_TO_INT (pid), "Name", buf, len, NULL);
288 * /proc/pid/stat format:
290 * [0] ppid pgid sid tty_nr tty_pgrp flags min_flt cmin_flt maj_flt cmaj_flt
291 * [10] utime stime cutime cstime prio nice threads 0 start_time vsize rss
292 * [20] rss rsslim start_code end_code start_stack esp eip pending blocked sigign
293 * [30] sigcatch wchan 0 0 exit_signal cpu rt_prio policy
296 #define RET_ERROR(err) do { \
297 if (error) *error = (err); \
302 get_process_stat_item (int pid, int pos, int sum, MonoProcessError *error)
304 #if defined(__APPLE__)
305 double process_user_time = 0, process_system_time = 0;//, process_percent = 0;
307 struct task_basic_info t_info;
308 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT, th_count;
309 thread_array_t th_array;
312 if (task_for_pid(mach_task_self(), pid, &task) != KERN_SUCCESS)
313 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
315 if (task_info(task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count) != KERN_SUCCESS) {
316 mach_port_deallocate (mach_task_self (), task);
317 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
320 if (task_threads(task, &th_array, &th_count) != KERN_SUCCESS) {
321 mach_port_deallocate (mach_task_self (), task);
322 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
325 for (i = 0; i < th_count; i++) {
326 double thread_user_time, thread_system_time;//, thread_percent;
328 struct thread_basic_info th_info;
329 mach_msg_type_number_t th_info_count = THREAD_BASIC_INFO_COUNT;
330 if (thread_info(th_array[i], THREAD_BASIC_INFO, (thread_info_t)&th_info, &th_info_count) == KERN_SUCCESS) {
331 thread_user_time = th_info.user_time.seconds + th_info.user_time.microseconds / 1e6;
332 thread_system_time = th_info.system_time.seconds + th_info.system_time.microseconds / 1e6;
333 //thread_percent = (double)th_info.cpu_usage / TH_USAGE_SCALE;
335 process_user_time += thread_user_time;
336 process_system_time += thread_system_time;
337 //process_percent += th_percent;
341 for (i = 0; i < th_count; i++)
342 mach_port_deallocate(task, th_array[i]);
344 mach_port_deallocate (mach_task_self (), task);
346 process_user_time += t_info.user_time.seconds + t_info.user_time.microseconds / 1e6;
347 process_system_time += t_info.system_time.seconds + t_info.system_time.microseconds / 1e6;
349 if (pos == 10 && sum == TRUE)
350 return (gint64)((process_user_time + process_system_time) * 10000000);
352 return (gint64)(process_user_time * 10000000);
354 return (gint64)(process_system_time * 10000000);
364 g_snprintf (buf, sizeof (buf), "/proc/%d/stat", pid);
365 f = fopen (buf, "r");
367 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
368 len = fread (buf, 1, sizeof (buf), f);
371 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
372 s = strchr (buf, ')');
374 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
376 while (g_ascii_isspace (*s)) s++;
378 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
379 /* skip the status char */
380 while (*s && !g_ascii_isspace (*s)) s++;
382 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
383 for (i = 0; i < pos; ++i) {
384 while (g_ascii_isspace (*s)) s++;
386 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
387 while (*s && !g_ascii_isspace (*s)) s++;
389 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
391 /* we are finally at the needed item */
392 value = strtoul (s, &end, 0);
393 /* add also the following value */
395 while (g_ascii_isspace (*s)) s++;
397 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
398 value += strtoul (s, &end, 0);
401 *error = MONO_PROCESS_ERROR_NONE;
409 static int user_hz = 0;
412 user_hz = sysconf (_SC_CLK_TCK);
421 get_process_stat_time (int pid, int pos, int sum, MonoProcessError *error)
423 gint64 val = get_process_stat_item (pid, pos, sum, error);
424 #if defined(__APPLE__)
427 /* return 100ns ticks */
428 return (val * 10000000) / get_user_hz ();
433 get_pid_status_item (int pid, const char *item, MonoProcessError *error, int multiplier)
435 #if defined(__APPLE__)
436 // ignore the multiplier
440 struct task_basic_info t_info;
441 mach_msg_type_number_t th_count = TASK_BASIC_INFO_COUNT;
443 if (pid == getpid ()) {
444 /* task_for_pid () doesn't work on ios, even for the current process */
445 task = mach_task_self ();
447 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
448 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
451 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &th_count) != KERN_SUCCESS) {
452 if (pid != getpid ())
453 mach_port_deallocate (mach_task_self (), task);
454 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
457 if (strcmp (item, "VmRSS") == 0 || strcmp (item, "VmHWM") == 0 || strcmp (item, "VmData") == 0)
458 ret = t_info.resident_size;
459 else if (strcmp (item, "VmSize") == 0 || strcmp (item, "VmPeak") == 0)
460 ret = t_info.virtual_size;
461 else if (strcmp (item, "Threads") == 0)
466 if (pid != getpid ())
467 mach_port_deallocate (mach_task_self (), task);
474 s = get_pid_status_item_buf (pid, item, buf, sizeof (buf), error);
476 return ((gint64) atol (s)) * multiplier;
482 * mono_process_get_data:
483 * @pid: pid of the process
484 * @data: description of data to return
486 * Return a data item of a process like user time, memory use etc,
487 * according to the @data argumet.
490 mono_process_get_data_with_error (gpointer pid, MonoProcessData data, MonoProcessError *error)
493 int rpid = GPOINTER_TO_INT (pid);
496 *error = MONO_PROCESS_ERROR_OTHER;
499 case MONO_PROCESS_NUM_THREADS:
500 return get_pid_status_item (rpid, "Threads", error, 1);
501 case MONO_PROCESS_USER_TIME:
502 return get_process_stat_time (rpid, 10, FALSE, error);
503 case MONO_PROCESS_SYSTEM_TIME:
504 return get_process_stat_time (rpid, 11, FALSE, error);
505 case MONO_PROCESS_TOTAL_TIME:
506 return get_process_stat_time (rpid, 10, TRUE, error);
507 case MONO_PROCESS_WORKING_SET:
508 return get_pid_status_item (rpid, "VmRSS", error, 1024);
509 case MONO_PROCESS_WORKING_SET_PEAK:
510 val = get_pid_status_item (rpid, "VmHWM", error, 1024);
512 val = get_pid_status_item (rpid, "VmRSS", error, 1024);
514 case MONO_PROCESS_PRIVATE_BYTES:
515 return get_pid_status_item (rpid, "VmData", error, 1024);
516 case MONO_PROCESS_VIRTUAL_BYTES:
517 return get_pid_status_item (rpid, "VmSize", error, 1024);
518 case MONO_PROCESS_VIRTUAL_BYTES_PEAK:
519 val = get_pid_status_item (rpid, "VmPeak", error, 1024);
521 val = get_pid_status_item (rpid, "VmSize", error, 1024);
523 case MONO_PROCESS_FAULTS:
524 return get_process_stat_item (rpid, 6, TRUE, error);
525 case MONO_PROCESS_ELAPSED:
526 return get_process_stat_item (rpid, 18, FALSE, error) / get_user_hz ();
527 case MONO_PROCESS_PPID:
528 return get_process_stat_time (rpid, 0, FALSE, error);
529 case MONO_PROCESS_PAGED_BYTES:
530 return get_pid_status_item (rpid, "VmSwap", error, 1024);
533 case MONO_PROCESS_END:
540 mono_process_get_data (gpointer pid, MonoProcessData data)
542 MonoProcessError error;
543 return mono_process_get_data_with_error (pid, data, &error);
547 mono_process_current_pid ()
549 #if defined(HAVE_UNISTD_H)
550 return (int) getpid ();
551 #elif defined(HOST_WIN32)
552 return (int) GetCurrentProcessId ();
561 * Return the number of processors on the system.
564 mono_cpu_count (void)
567 #ifdef PLATFORM_ANDROID
568 /* Android tries really hard to save power by powering off CPUs on SMP phones which
569 * means the normal way to query cpu count returns a wrong value with userspace API.
570 * Instead we use /sys entries to query the actual hardware CPU count.
572 char buffer[8] = {'\0'};
573 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
574 /* Format of the /sys entry is a cpulist of indexes which in the case
575 * of present is always of the form "0-(n-1)" when there is more than
576 * 1 core, n being the number of CPU cores in the system. Otherwise
577 * the value is simply 0
579 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
580 count = strtol (((char*)buffer) + 2, NULL, 10);
586 #ifdef _SC_NPROCESSORS_ONLN
587 count = sysconf (_SC_NPROCESSORS_ONLN);
594 size_t len = sizeof (int);
597 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
604 GetSystemInfo (&info);
605 return info.dwNumberOfProcessors;
613 get_cpu_times (int cpu_id, gint64 *user, gint64 *systemt, gint64 *irq, gint64 *sirq, gint64 *idle)
617 int hz = get_user_hz ();
618 guint64 user_ticks = 0, nice_ticks = 0, system_ticks = 0, idle_ticks = 0, irq_ticks = 0, sirq_ticks = 0;
619 FILE *f = fopen ("/proc/stat", "r");
623 hz *= mono_cpu_count ();
624 while ((s = fgets (buf, sizeof (buf), f))) {
626 if (cpu_id < 0 && strncmp (s, "cpu", 3) == 0 && g_ascii_isspace (s [3])) {
628 } else if (cpu_id >= 0 && strncmp (s, "cpu", 3) == 0 && strtol (s + 3, &data, 10) == cpu_id) {
636 user_ticks = strtoull (data, &data, 10);
637 nice_ticks = strtoull (data, &data, 10);
638 system_ticks = strtoull (data, &data, 10);
639 idle_ticks = strtoull (data, &data, 10);
640 /* iowait_ticks = strtoull (data, &data, 10); */
641 irq_ticks = strtoull (data, &data, 10);
642 sirq_ticks = strtoull (data, &data, 10);
648 *user = (user_ticks + nice_ticks) * 10000000 / hz;
650 *systemt = (system_ticks) * 10000000 / hz;
652 *irq = (irq_ticks) * 10000000 / hz;
654 *sirq = (sirq_ticks) * 10000000 / hz;
656 *idle = (idle_ticks) * 10000000 / hz;
661 * @cpu_id: processor number or -1 to get a summary of all the processors
662 * @data: type of data to retrieve
664 * Get data about a processor on the system, like time spent in user space or idle time.
667 mono_cpu_get_data (int cpu_id, MonoCpuData data, MonoProcessError *error)
672 *error = MONO_PROCESS_ERROR_NONE;
674 case MONO_CPU_USER_TIME:
675 get_cpu_times (cpu_id, &value, NULL, NULL, NULL, NULL);
677 case MONO_CPU_PRIV_TIME:
678 get_cpu_times (cpu_id, NULL, &value, NULL, NULL, NULL);
680 case MONO_CPU_INTR_TIME:
681 get_cpu_times (cpu_id, NULL, NULL, &value, NULL, NULL);
683 case MONO_CPU_DCP_TIME:
684 get_cpu_times (cpu_id, NULL, NULL, NULL, &value, NULL);
686 case MONO_CPU_IDLE_TIME:
687 get_cpu_times (cpu_id, NULL, NULL, NULL, NULL, &value);
698 mono_atexit (void (*func)(void))
700 #ifdef PLATFORM_ANDROID
701 /* Some versions of android libc doesn't define atexit () */
704 return atexit (func);