2 * Copyright 2008-2011 Novell Inc
3 * Copyright 2011 Xamarin Inc
7 #include "utils/mono-proclib.h"
8 #include "utils/mono-time.h"
24 #if defined(_POSIX_VERSION)
25 #include <sys/errno.h>
26 #include <sys/param.h>
27 #include <sys/types.h>
28 #include <sys/sysctl.h>
29 #include <sys/resource.h>
31 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
33 #if defined(__APPLE__)
34 #include <mach/mach.h>
36 #ifdef HAVE_SYS_USER_H
39 #ifdef HAVE_STRUCT_KINFO_PROC_KP_PROC
40 # define kinfo_pid_member kp_proc.p_pid
41 # define kinfo_name_member kp_proc.p_comm
42 #elif defined(__OpenBSD__)
43 # define kinfo_pid_member p_pid
44 # define kinfo_name_member p_comm
46 #define kinfo_pid_member ki_pid
47 #define kinfo_name_member ki_comm
54 * @size: a pointer to a location where the size of the returned array is stored
56 * Return an array of pid values for the processes currently running on the system.
57 * The size of the array is stored in @size.
60 mono_process_list (int *size)
66 size_t data_len = sizeof (struct kinfo_proc2) * 400;
67 struct kinfo_proc2 *processes = malloc (data_len);
70 size_t data_len = sizeof (struct kinfo_proc) * 16;
71 struct kinfo_proc *processes;
73 #endif /* KERN_PROC2 */
85 mib [2] = KERN_PROC_ALL;
87 mib [4] = sizeof(struct kinfo_proc2);
88 mib [5] = 400; /* XXX */
90 res = sysctl (mib, 6, processes, &data_len, NULL, 0);
100 mib [2] = KERN_PROC_ALL;
103 res = sysctl (mib, 4, NULL, &data_len, NULL, 0);
106 processes = malloc (data_len);
107 res = sysctl (mib, 4, processes, &data_len, NULL, 0);
117 #endif /* KERN_PROC2 */
120 res = data_len/sizeof (struct kinfo_proc2);
122 res = data_len/sizeof (struct kinfo_proc);
123 #endif /* KERN_PROC2 */
124 buf = g_realloc (buf, res * sizeof (void*));
125 for (i = 0; i < res; ++i)
126 buf [i] = GINT_TO_POINTER (processes [i].kinfo_pid_member);
131 #elif defined(__HAIKU__)
132 /* FIXME: Add back the code from 9185fcc305e43428d0f40f3ee37c8a405d41c9ae */
133 g_assert_not_reached ();
140 GDir *dir = g_dir_open ("/proc/", 0, NULL);
146 while ((name = g_dir_read_name (dir))) {
149 pid = strtol (name, &nend, 10);
150 if (pid <= 0 || nend == name || *nend)
157 buf = g_realloc (buf, count * sizeof (void*));
159 buf [i++] = GINT_TO_POINTER (pid);
168 static G_GNUC_UNUSED char*
169 get_pid_status_item_buf (int pid, const char *item, char *rbuf, int blen, MonoProcessError *error)
174 int len = strlen (item);
176 g_snprintf (buf, sizeof (buf), "/proc/%d/status", pid);
177 f = fopen (buf, "r");
180 *error = MONO_PROCESS_ERROR_NOT_FOUND;
183 while ((s = fgets (buf, blen, f))) {
186 if (strncmp (buf, item, len))
189 while (g_ascii_isspace (*s)) s++;
192 while (g_ascii_isspace (*s)) s++;
195 strncpy (rbuf, s, MIN (len, blen));
196 rbuf [MIN (len, blen) - 1] = 0;
198 *error = MONO_PROCESS_ERROR_NONE;
203 *error = MONO_PROCESS_ERROR_OTHER;
208 * mono_process_get_name:
209 * @pid: pid of the process
210 * @buf: byte buffer where to store the name of the prcoess
211 * @len: size of the buffer @buf
213 * Return the name of the process identified by @pid, storing it
214 * inside @buf for a maximum of len bytes (including the terminating 0).
217 mono_process_get_name (gpointer pid, char *buf, int len)
223 size_t data_len = sizeof (struct kinfo_proc2);
224 struct kinfo_proc2 processi;
227 size_t data_len = sizeof (struct kinfo_proc);
228 struct kinfo_proc processi;
229 #endif /* KERN_PROC2 */
231 memset (buf, 0, len);
235 mib [1] = KERN_PROC2;
236 mib [2] = KERN_PROC_PID;
237 mib [3] = GPOINTER_TO_UINT (pid);
238 mib [4] = sizeof(struct kinfo_proc2);
239 mib [5] = 400; /* XXX */
241 res = sysctl (mib, 6, &processi, &data_len, NULL, 0);
243 if (res < 0 || data_len != sizeof (struct kinfo_proc2)) {
249 mib [2] = KERN_PROC_PID;
250 mib [3] = GPOINTER_TO_UINT (pid);
252 res = sysctl (mib, 4, &processi, &data_len, NULL, 0);
253 if (res < 0 || data_len != sizeof (struct kinfo_proc)) {
256 #endif /* KERN_PROC2 */
257 strncpy (buf, processi.kinfo_name_member, len - 1);
264 sprintf (fname, "/proc/%d/cmdline", GPOINTER_TO_INT (pid));
266 file = fopen (fname, "r");
269 r = fread (buf, 1, len - 1, file);
272 p = strrchr (buf, '/');
276 return get_pid_status_item_buf (GPOINTER_TO_INT (pid), "Name", buf, len, NULL);
283 * /proc/pid/stat format:
285 * [0] ppid pgid sid tty_nr tty_pgrp flags min_flt cmin_flt maj_flt cmaj_flt
286 * [10] utime stime cutime cstime prio nice threads 0 start_time vsize rss
287 * [20] rss rsslim start_code end_code start_stack esp eip pending blocked sigign
288 * [30] sigcatch wchan 0 0 exit_signal cpu rt_prio policy
291 #define RET_ERROR(err) do { \
292 if (error) *error = (err); \
297 get_process_stat_item (int pid, int pos, int sum, MonoProcessError *error)
299 #if defined(__APPLE__)
300 double process_user_time = 0, process_system_time = 0;//, process_percent = 0;
302 struct task_basic_info t_info;
303 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT, th_count;
304 thread_array_t th_array;
307 if (task_for_pid(mach_task_self(), pid, &task) != KERN_SUCCESS)
308 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
310 if (task_info(task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count) != KERN_SUCCESS) {
311 mach_port_deallocate (mach_task_self (), task);
312 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
315 if (task_threads(task, &th_array, &th_count) != KERN_SUCCESS) {
316 mach_port_deallocate (mach_task_self (), task);
317 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
320 for (i = 0; i < th_count; i++) {
321 double thread_user_time, thread_system_time;//, thread_percent;
323 struct thread_basic_info th_info;
324 mach_msg_type_number_t th_info_count = THREAD_BASIC_INFO_COUNT;
325 if (thread_info(th_array[i], THREAD_BASIC_INFO, (thread_info_t)&th_info, &th_info_count) == KERN_SUCCESS) {
326 thread_user_time = th_info.user_time.seconds + th_info.user_time.microseconds / 1e6;
327 thread_system_time = th_info.system_time.seconds + th_info.system_time.microseconds / 1e6;
328 //thread_percent = (double)th_info.cpu_usage / TH_USAGE_SCALE;
330 process_user_time += thread_user_time;
331 process_system_time += thread_system_time;
332 //process_percent += th_percent;
336 for (i = 0; i < th_count; i++)
337 mach_port_deallocate(task, th_array[i]);
339 mach_port_deallocate (mach_task_self (), task);
341 process_user_time += t_info.user_time.seconds + t_info.user_time.microseconds / 1e6;
342 process_system_time += t_info.system_time.seconds + t_info.system_time.microseconds / 1e6;
344 if (pos == 10 && sum == TRUE)
345 return (gint64)((process_user_time + process_system_time) * 10000000);
347 return (gint64)(process_user_time * 10000000);
349 return (gint64)(process_system_time * 10000000);
359 g_snprintf (buf, sizeof (buf), "/proc/%d/stat", pid);
360 f = fopen (buf, "r");
362 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
363 len = fread (buf, 1, sizeof (buf), f);
366 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
367 s = strchr (buf, ')');
369 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
371 while (g_ascii_isspace (*s)) s++;
373 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
374 /* skip the status char */
375 while (*s && !g_ascii_isspace (*s)) s++;
377 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
378 for (i = 0; i < pos; ++i) {
379 while (g_ascii_isspace (*s)) s++;
381 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
382 while (*s && !g_ascii_isspace (*s)) s++;
384 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
386 /* we are finally at the needed item */
387 value = strtoul (s, &end, 0);
388 /* add also the following value */
390 while (g_ascii_isspace (*s)) s++;
392 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
393 value += strtoul (s, &end, 0);
396 *error = MONO_PROCESS_ERROR_NONE;
404 static int user_hz = 0;
407 user_hz = sysconf (_SC_CLK_TCK);
416 get_process_stat_time (int pid, int pos, int sum, MonoProcessError *error)
418 gint64 val = get_process_stat_item (pid, pos, sum, error);
419 #if defined(__APPLE__)
422 /* return 100ns ticks */
423 return (val * 10000000) / get_user_hz ();
428 get_pid_status_item (int pid, const char *item, MonoProcessError *error, int multiplier)
430 #if defined(__APPLE__)
431 // ignore the multiplier
435 struct task_basic_info t_info;
436 mach_msg_type_number_t th_count = TASK_BASIC_INFO_COUNT;
438 if (pid == getpid ()) {
439 /* task_for_pid () doesn't work on ios, even for the current process */
440 task = mach_task_self ();
442 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
443 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
446 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &th_count) != KERN_SUCCESS) {
447 if (pid != getpid ())
448 mach_port_deallocate (mach_task_self (), task);
449 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
452 if (strcmp (item, "VmRSS") == 0 || strcmp (item, "VmHWM") == 0 || strcmp (item, "VmData") == 0)
453 ret = t_info.resident_size;
454 else if (strcmp (item, "VmSize") == 0 || strcmp (item, "VmPeak") == 0)
455 ret = t_info.virtual_size;
456 else if (strcmp (item, "Threads") == 0)
461 if (pid != getpid ())
462 mach_port_deallocate (mach_task_self (), task);
469 s = get_pid_status_item_buf (pid, item, buf, sizeof (buf), error);
471 return ((gint64) atol (s)) * multiplier;
477 * mono_process_get_data:
478 * @pid: pid of the process
479 * @data: description of data to return
481 * Return a data item of a process like user time, memory use etc,
482 * according to the @data argumet.
485 mono_process_get_data_with_error (gpointer pid, MonoProcessData data, MonoProcessError *error)
488 int rpid = GPOINTER_TO_INT (pid);
491 *error = MONO_PROCESS_ERROR_OTHER;
494 case MONO_PROCESS_NUM_THREADS:
495 return get_pid_status_item (rpid, "Threads", error, 1);
496 case MONO_PROCESS_USER_TIME:
497 return get_process_stat_time (rpid, 10, FALSE, error);
498 case MONO_PROCESS_SYSTEM_TIME:
499 return get_process_stat_time (rpid, 11, FALSE, error);
500 case MONO_PROCESS_TOTAL_TIME:
501 return get_process_stat_time (rpid, 10, TRUE, error);
502 case MONO_PROCESS_WORKING_SET:
503 return get_pid_status_item (rpid, "VmRSS", error, 1024);
504 case MONO_PROCESS_WORKING_SET_PEAK:
505 val = get_pid_status_item (rpid, "VmHWM", error, 1024);
507 val = get_pid_status_item (rpid, "VmRSS", error, 1024);
509 case MONO_PROCESS_PRIVATE_BYTES:
510 return get_pid_status_item (rpid, "VmData", error, 1024);
511 case MONO_PROCESS_VIRTUAL_BYTES:
512 return get_pid_status_item (rpid, "VmSize", error, 1024);
513 case MONO_PROCESS_VIRTUAL_BYTES_PEAK:
514 val = get_pid_status_item (rpid, "VmPeak", error, 1024);
516 val = get_pid_status_item (rpid, "VmSize", error, 1024);
518 case MONO_PROCESS_FAULTS:
519 return get_process_stat_item (rpid, 6, TRUE, error);
520 case MONO_PROCESS_ELAPSED:
521 return get_process_stat_item (rpid, 18, FALSE, error) / get_user_hz ();
522 case MONO_PROCESS_PPID:
523 return get_process_stat_time (rpid, 0, FALSE, error);
524 case MONO_PROCESS_PAGED_BYTES:
525 return get_pid_status_item (rpid, "VmSwap", error, 1024);
528 case MONO_PROCESS_END:
535 mono_process_get_data (gpointer pid, MonoProcessData data)
537 MonoProcessError error;
538 return mono_process_get_data_with_error (pid, data, &error);
542 mono_process_current_pid ()
544 #if defined(HAVE_UNISTD_H)
545 return (int) getpid ();
546 #elif defined(HOST_WIN32)
547 return (int) GetCurrentProcessId ();
556 * Return the number of processors on the system.
559 mono_cpu_count (void)
562 #ifdef PLATFORM_ANDROID
563 /* Android tries really hard to save power by powering off CPUs on SMP phones which
564 * means the normal way to query cpu count returns a wrong value with userspace API.
565 * Instead we use /sys entries to query the actual hardware CPU count.
567 char buffer[8] = {'\0'};
568 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
569 /* Format of the /sys entry is a cpulist of indexes which in the case
570 * of present is always of the form "0-(n-1)" when there is more than
571 * 1 core, n being the number of CPU cores in the system. Otherwise
572 * the value is simply 0
574 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
575 count = strtol (((char*)buffer) + 2, NULL, 10);
581 #ifdef _SC_NPROCESSORS_ONLN
582 count = sysconf (_SC_NPROCESSORS_ONLN);
589 size_t len = sizeof (int);
592 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
599 GetSystemInfo (&info);
600 return info.dwNumberOfProcessors;
608 get_cpu_times (int cpu_id, gint64 *user, gint64 *systemt, gint64 *irq, gint64 *sirq, gint64 *idle)
612 int hz = get_user_hz ();
613 guint64 user_ticks = 0, nice_ticks = 0, system_ticks = 0, idle_ticks = 0, irq_ticks = 0, sirq_ticks = 0;
614 FILE *f = fopen ("/proc/stat", "r");
618 hz *= mono_cpu_count ();
619 while ((s = fgets (buf, sizeof (buf), f))) {
621 if (cpu_id < 0 && strncmp (s, "cpu", 3) == 0 && g_ascii_isspace (s [3])) {
623 } else if (cpu_id >= 0 && strncmp (s, "cpu", 3) == 0 && strtol (s + 3, &data, 10) == cpu_id) {
631 user_ticks = strtoull (data, &data, 10);
632 nice_ticks = strtoull (data, &data, 10);
633 system_ticks = strtoull (data, &data, 10);
634 idle_ticks = strtoull (data, &data, 10);
635 /* iowait_ticks = strtoull (data, &data, 10); */
636 irq_ticks = strtoull (data, &data, 10);
637 sirq_ticks = strtoull (data, &data, 10);
643 *user = (user_ticks + nice_ticks) * 10000000 / hz;
645 *systemt = (system_ticks) * 10000000 / hz;
647 *irq = (irq_ticks) * 10000000 / hz;
649 *sirq = (sirq_ticks) * 10000000 / hz;
651 *idle = (idle_ticks) * 10000000 / hz;
656 * @cpu_id: processor number or -1 to get a summary of all the processors
657 * @data: type of data to retrieve
659 * Get data about a processor on the system, like time spent in user space or idle time.
662 mono_cpu_get_data (int cpu_id, MonoCpuData data, MonoProcessError *error)
667 *error = MONO_PROCESS_ERROR_NONE;
669 case MONO_CPU_USER_TIME:
670 get_cpu_times (cpu_id, &value, NULL, NULL, NULL, NULL);
672 case MONO_CPU_PRIV_TIME:
673 get_cpu_times (cpu_id, NULL, &value, NULL, NULL, NULL);
675 case MONO_CPU_INTR_TIME:
676 get_cpu_times (cpu_id, NULL, NULL, &value, NULL, NULL);
678 case MONO_CPU_DCP_TIME:
679 get_cpu_times (cpu_id, NULL, NULL, NULL, &value, NULL);
681 case MONO_CPU_IDLE_TIME:
682 get_cpu_times (cpu_id, NULL, NULL, NULL, NULL, &value);
693 mono_atexit (void (*func)(void))
695 #ifdef PLATFORM_ANDROID
696 /* Some versions of android libc doesn't define atexit () */
699 return atexit (func);
704 mono_cpu_usage (MonoCpuUsageState *prev)
706 gint32 cpu_usage = 0;
707 gint64 cpu_total_time;
708 gint64 cpu_busy_time;
711 struct rusage resource_usage;
716 if (getrusage (RUSAGE_SELF, &resource_usage) == -1) {
717 g_error ("getrusage() failed, errno is %d (%s)\n", errno, strerror (errno));
721 current_time = mono_100ns_ticks ();
722 kernel_time = resource_usage.ru_stime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_stime.tv_usec * 10;
723 user_time = resource_usage.ru_utime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_utime.tv_usec * 10;
725 cpu_busy_time = (user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0));
726 cpu_total_time = (current_time - (prev ? prev->current_time : 0)) * mono_cpu_count ();
729 prev->kernel_time = kernel_time;
730 prev->user_time = user_time;
731 prev->current_time = current_time;
738 if (!GetSystemTimes ((FILETIME*) &idle_time, (FILETIME*) &kernel_time, (FILETIME*) &user_time)) {
739 g_error ("GetSystemTimes() failed, error code is %d\n", GetLastError ());
743 cpu_total_time = (gint64)((user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0)));
744 cpu_busy_time = (gint64)(cpu_total_time - (idle_time - (prev ? prev->idle_time : 0)));
747 prev->idle_time = idle_time;
748 prev->kernel_time = kernel_time;
749 prev->user_time = user_time;
753 if (cpu_total_time > 0 && cpu_busy_time > 0)
754 cpu_usage = (gint32)(cpu_busy_time * 100 / cpu_total_time);
756 g_assert (cpu_usage >= 0);
757 g_assert (cpu_usage <= 100);