2 * Copyright 2008-2011 Novell Inc
3 * Copyright 2011 Xamarin Inc
7 #include "utils/mono-proclib.h"
8 #include "utils/mono-time.h"
23 #if defined(_POSIX_VERSION)
24 #include <sys/errno.h>
25 #include <sys/param.h>
26 #ifdef HAVE_SYS_TYPES_H
27 #include <sys/types.h>
29 #ifdef HAVE_SYS_SYSCTL_H
30 #include <sys/sysctl.h>
32 #include <sys/resource.h>
34 #if defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
36 #if defined(__APPLE__)
37 #include <mach/mach.h>
39 #ifdef HAVE_SYS_USER_H
42 #ifdef HAVE_STRUCT_KINFO_PROC_KP_PROC
43 # define kinfo_starttime_member kp_proc.p_starttime
44 # define kinfo_pid_member kp_proc.p_pid
45 # define kinfo_name_member kp_proc.p_comm
46 #elif defined(__OpenBSD__)
47 // Can not figure out how to get the proc's start time on OpenBSD
48 # undef kinfo_starttime_member
49 # define kinfo_pid_member p_pid
50 # define kinfo_name_member p_comm
52 #define kinfo_starttime_member ki_start
53 #define kinfo_pid_member ki_pid
54 #define kinfo_name_member ki_comm
61 * @size: a pointer to a location where the size of the returned array is stored
63 * Return an array of pid values for the processes currently running on the system.
64 * The size of the array is stored in @size.
67 mono_process_list (int *size)
73 size_t data_len = sizeof (struct kinfo_proc2) * 400;
74 struct kinfo_proc2 *processes = malloc (data_len);
77 size_t data_len = sizeof (struct kinfo_proc) * 16;
78 struct kinfo_proc *processes;
80 #endif /* KERN_PROC2 */
92 mib [2] = KERN_PROC_ALL;
94 mib [4] = sizeof(struct kinfo_proc2);
95 mib [5] = 400; /* XXX */
97 res = sysctl (mib, 6, processes, &data_len, NULL, 0);
107 mib [2] = KERN_PROC_ALL;
110 res = sysctl (mib, 4, NULL, &data_len, NULL, 0);
113 processes = (struct kinfo_proc *) malloc (data_len);
114 res = sysctl (mib, 4, processes, &data_len, NULL, 0);
124 #endif /* KERN_PROC2 */
127 res = data_len/sizeof (struct kinfo_proc2);
129 res = data_len/sizeof (struct kinfo_proc);
130 #endif /* KERN_PROC2 */
131 buf = (void **) g_realloc (buf, res * sizeof (void*));
132 for (i = 0; i < res; ++i)
133 buf [i] = GINT_TO_POINTER (processes [i].kinfo_pid_member);
138 #elif defined(__HAIKU__)
139 /* FIXME: Add back the code from 9185fcc305e43428d0f40f3ee37c8a405d41c9ae */
140 g_assert_not_reached ();
147 GDir *dir = g_dir_open ("/proc/", 0, NULL);
153 while ((name = g_dir_read_name (dir))) {
156 pid = strtol (name, &nend, 10);
157 if (pid <= 0 || nend == name || *nend)
164 buf = (void **)g_realloc (buf, count * sizeof (void*));
166 buf [i++] = GINT_TO_POINTER (pid);
175 static G_GNUC_UNUSED char*
176 get_pid_status_item_buf (int pid, const char *item, char *rbuf, int blen, MonoProcessError *error)
181 int len = strlen (item);
183 g_snprintf (buf, sizeof (buf), "/proc/%d/status", pid);
184 f = fopen (buf, "r");
187 *error = MONO_PROCESS_ERROR_NOT_FOUND;
190 while ((s = fgets (buf, blen, f))) {
193 if (strncmp (buf, item, len))
196 while (g_ascii_isspace (*s)) s++;
199 while (g_ascii_isspace (*s)) s++;
202 strncpy (rbuf, s, MIN (len, blen));
203 rbuf [MIN (len, blen) - 1] = 0;
205 *error = MONO_PROCESS_ERROR_NONE;
210 *error = MONO_PROCESS_ERROR_OTHER;
217 #define KINFO_PROC struct kinfo_proc2
219 #define KINFO_PROC struct kinfo_proc
223 sysctl_kinfo_proc (gpointer pid, KINFO_PROC* processi)
226 size_t data_len = sizeof (KINFO_PROC);
231 mib [1] = KERN_PROC2;
232 mib [2] = KERN_PROC_PID;
233 mib [3] = GPOINTER_TO_UINT (pid);
234 mib [4] = sizeof(KINFO_PROC);
235 mib [5] = 400; /* XXX */
237 res = sysctl (mib, 6, processi, &data_len, NULL, 0);
242 mib [2] = KERN_PROC_PID;
243 mib [3] = GPOINTER_TO_UINT (pid);
245 res = sysctl (mib, 4, processi, &data_len, NULL, 0);
246 #endif /* KERN_PROC2 */
248 if (res < 0 || data_len != sizeof (KINFO_PROC))
253 #endif /* USE_SYSCTL */
256 * mono_process_get_name:
257 * @pid: pid of the process
258 * @buf: byte buffer where to store the name of the prcoess
259 * @len: size of the buffer @buf
261 * Return the name of the process identified by @pid, storing it
262 * inside @buf for a maximum of len bytes (including the terminating 0).
265 mono_process_get_name (gpointer pid, char *buf, int len)
270 memset (buf, 0, len);
272 if (sysctl_kinfo_proc (pid, &processi))
273 strncpy (buf, processi.kinfo_name_member, len - 1);
281 sprintf (fname, "/proc/%d/cmdline", GPOINTER_TO_INT (pid));
283 file = fopen (fname, "r");
286 r = fread (buf, 1, len - 1, file);
289 p = strrchr (buf, '/');
293 return get_pid_status_item_buf (GPOINTER_TO_INT (pid), "Name", buf, len, NULL);
300 mono_process_get_times (gpointer pid, gint64 *start_time, gint64 *user_time, gint64 *kernel_time)
303 *user_time = mono_process_get_data (pid, MONO_PROCESS_USER_TIME);
306 *kernel_time = mono_process_get_data (pid, MONO_PROCESS_SYSTEM_TIME);
311 #if USE_SYSCTL && defined(kinfo_starttime_member)
315 if (sysctl_kinfo_proc (pid, &processi))
316 *start_time = mono_100ns_datetime_from_timeval (processi.kinfo_starttime_member);
320 if (*start_time == 0) {
321 static guint64 boot_time = 0;
323 boot_time = mono_100ns_datetime () - ((guint64)mono_msec_ticks ()) * 10000;
325 *start_time = boot_time + mono_process_get_data (pid, MONO_PROCESS_ELAPSED);
331 * /proc/pid/stat format:
333 * [0] ppid pgid sid tty_nr tty_pgrp flags min_flt cmin_flt maj_flt cmaj_flt
334 * [10] utime stime cutime cstime prio nice threads 0 start_time vsize
335 * [20] rss rsslim start_code end_code start_stack esp eip pending blocked sigign
336 * [30] sigcatch wchan 0 0 exit_signal cpu rt_prio policy
339 #define RET_ERROR(err) do { \
340 if (error) *error = (err); \
345 get_process_stat_item (int pid, int pos, int sum, MonoProcessError *error)
347 #if defined(__APPLE__)
348 double process_user_time = 0, process_system_time = 0;//, process_percent = 0;
350 struct task_basic_info t_info;
351 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT, th_count;
352 thread_array_t th_array;
355 if (pid == getpid ()) {
356 /* task_for_pid () doesn't work on ios, even for the current process */
357 task = mach_task_self ();
359 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
360 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
363 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count) != KERN_SUCCESS) {
364 if (pid != getpid ())
365 mach_port_deallocate (mach_task_self (), task);
366 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
369 if (task_threads(task, &th_array, &th_count) != KERN_SUCCESS) {
370 if (pid != getpid ())
371 mach_port_deallocate (mach_task_self (), task);
372 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
375 for (i = 0; i < th_count; i++) {
376 double thread_user_time, thread_system_time;//, thread_percent;
378 struct thread_basic_info th_info;
379 mach_msg_type_number_t th_info_count = THREAD_BASIC_INFO_COUNT;
380 if (thread_info(th_array[i], THREAD_BASIC_INFO, (thread_info_t)&th_info, &th_info_count) == KERN_SUCCESS) {
381 thread_user_time = th_info.user_time.seconds + th_info.user_time.microseconds / 1e6;
382 thread_system_time = th_info.system_time.seconds + th_info.system_time.microseconds / 1e6;
383 //thread_percent = (double)th_info.cpu_usage / TH_USAGE_SCALE;
385 process_user_time += thread_user_time;
386 process_system_time += thread_system_time;
387 //process_percent += th_percent;
391 for (i = 0; i < th_count; i++)
392 mach_port_deallocate(task, th_array[i]);
394 if (pid != getpid ())
395 mach_port_deallocate (mach_task_self (), task);
397 process_user_time += t_info.user_time.seconds + t_info.user_time.microseconds / 1e6;
398 process_system_time += t_info.system_time.seconds + t_info.system_time.microseconds / 1e6;
400 if (pos == 10 && sum == TRUE)
401 return (gint64)((process_user_time + process_system_time) * 10000000);
403 return (gint64)(process_user_time * 10000000);
405 return (gint64)(process_system_time * 10000000);
415 g_snprintf (buf, sizeof (buf), "/proc/%d/stat", pid);
416 f = fopen (buf, "r");
418 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
419 len = fread (buf, 1, sizeof (buf), f);
422 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
423 s = strchr (buf, ')');
425 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
427 while (g_ascii_isspace (*s)) s++;
429 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
430 /* skip the status char */
431 while (*s && !g_ascii_isspace (*s)) s++;
433 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
434 for (i = 0; i < pos; ++i) {
435 while (g_ascii_isspace (*s)) s++;
437 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
438 while (*s && !g_ascii_isspace (*s)) s++;
440 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
442 /* we are finally at the needed item */
443 value = strtoul (s, &end, 0);
444 /* add also the following value */
446 while (g_ascii_isspace (*s)) s++;
448 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
449 value += strtoul (s, &end, 0);
452 *error = MONO_PROCESS_ERROR_NONE;
460 static int user_hz = 0;
463 user_hz = sysconf (_SC_CLK_TCK);
472 get_process_stat_time (int pid, int pos, int sum, MonoProcessError *error)
474 gint64 val = get_process_stat_item (pid, pos, sum, error);
475 #if defined(__APPLE__)
478 /* return 100ns ticks */
479 return (val * 10000000) / get_user_hz ();
484 get_pid_status_item (int pid, const char *item, MonoProcessError *error, int multiplier)
486 #if defined(__APPLE__)
487 // ignore the multiplier
491 struct task_basic_info t_info;
492 mach_msg_type_number_t th_count = TASK_BASIC_INFO_COUNT;
494 if (pid == getpid ()) {
495 /* task_for_pid () doesn't work on ios, even for the current process */
496 task = mach_task_self ();
498 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
499 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
502 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &th_count) != KERN_SUCCESS) {
503 if (pid != getpid ())
504 mach_port_deallocate (mach_task_self (), task);
505 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
508 if (strcmp (item, "VmRSS") == 0 || strcmp (item, "VmHWM") == 0 || strcmp (item, "VmData") == 0)
509 ret = t_info.resident_size;
510 else if (strcmp (item, "VmSize") == 0 || strcmp (item, "VmPeak") == 0)
511 ret = t_info.virtual_size;
512 else if (strcmp (item, "Threads") == 0)
517 if (pid != getpid ())
518 mach_port_deallocate (mach_task_self (), task);
525 s = get_pid_status_item_buf (pid, item, buf, sizeof (buf), error);
527 return ((gint64) atol (s)) * multiplier;
533 * mono_process_get_data:
534 * @pid: pid of the process
535 * @data: description of data to return
537 * Return a data item of a process like user time, memory use etc,
538 * according to the @data argumet.
541 mono_process_get_data_with_error (gpointer pid, MonoProcessData data, MonoProcessError *error)
544 int rpid = GPOINTER_TO_INT (pid);
547 *error = MONO_PROCESS_ERROR_OTHER;
550 case MONO_PROCESS_NUM_THREADS:
551 return get_pid_status_item (rpid, "Threads", error, 1);
552 case MONO_PROCESS_USER_TIME:
553 return get_process_stat_time (rpid, 10, FALSE, error);
554 case MONO_PROCESS_SYSTEM_TIME:
555 return get_process_stat_time (rpid, 11, FALSE, error);
556 case MONO_PROCESS_TOTAL_TIME:
557 return get_process_stat_time (rpid, 10, TRUE, error);
558 case MONO_PROCESS_WORKING_SET:
559 return get_pid_status_item (rpid, "VmRSS", error, 1024);
560 case MONO_PROCESS_WORKING_SET_PEAK:
561 val = get_pid_status_item (rpid, "VmHWM", error, 1024);
563 val = get_pid_status_item (rpid, "VmRSS", error, 1024);
565 case MONO_PROCESS_PRIVATE_BYTES:
566 return get_pid_status_item (rpid, "VmData", error, 1024);
567 case MONO_PROCESS_VIRTUAL_BYTES:
568 return get_pid_status_item (rpid, "VmSize", error, 1024);
569 case MONO_PROCESS_VIRTUAL_BYTES_PEAK:
570 val = get_pid_status_item (rpid, "VmPeak", error, 1024);
572 val = get_pid_status_item (rpid, "VmSize", error, 1024);
574 case MONO_PROCESS_FAULTS:
575 return get_process_stat_item (rpid, 6, TRUE, error);
576 case MONO_PROCESS_ELAPSED:
577 return get_process_stat_time (rpid, 18, FALSE, error);
578 case MONO_PROCESS_PPID:
579 return get_process_stat_time (rpid, 0, FALSE, error);
580 case MONO_PROCESS_PAGED_BYTES:
581 return get_pid_status_item (rpid, "VmSwap", error, 1024);
584 case MONO_PROCESS_END:
591 mono_process_get_data (gpointer pid, MonoProcessData data)
593 MonoProcessError error;
594 return mono_process_get_data_with_error (pid, data, &error);
598 mono_process_current_pid ()
600 #if defined(HAVE_UNISTD_H)
601 return (int) getpid ();
602 #elif defined(HOST_WIN32)
603 return (int) GetCurrentProcessId ();
612 * Return the number of processors on the system.
615 mono_cpu_count (void)
619 GetSystemInfo (&info);
620 return info.dwNumberOfProcessors;
623 #ifdef PLATFORM_ANDROID
624 /* Android tries really hard to save power by powering off CPUs on SMP phones which
625 * means the normal way to query cpu count returns a wrong value with userspace API.
626 * Instead we use /sys entries to query the actual hardware CPU count.
628 char buffer[8] = {'\0'};
629 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
630 /* Format of the /sys entry is a cpulist of indexes which in the case
631 * of present is always of the form "0-(n-1)" when there is more than
632 * 1 core, n being the number of CPU cores in the system. Otherwise
633 * the value is simply 0
635 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
636 count = strtol (((char*)buffer) + 2, NULL, 10);
642 #ifdef _SC_NPROCESSORS_CONF
643 count = sysconf (_SC_NPROCESSORS_CONF);
650 size_t len = sizeof (int);
653 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
663 get_cpu_times (int cpu_id, gint64 *user, gint64 *systemt, gint64 *irq, gint64 *sirq, gint64 *idle)
667 int hz = get_user_hz ();
668 guint64 user_ticks = 0, nice_ticks = 0, system_ticks = 0, idle_ticks = 0, irq_ticks = 0, sirq_ticks = 0;
669 FILE *f = fopen ("/proc/stat", "r");
673 hz *= mono_cpu_count ();
674 while ((s = fgets (buf, sizeof (buf), f))) {
676 if (cpu_id < 0 && strncmp (s, "cpu", 3) == 0 && g_ascii_isspace (s [3])) {
678 } else if (cpu_id >= 0 && strncmp (s, "cpu", 3) == 0 && strtol (s + 3, &data, 10) == cpu_id) {
686 user_ticks = strtoull (data, &data, 10);
687 nice_ticks = strtoull (data, &data, 10);
688 system_ticks = strtoull (data, &data, 10);
689 idle_ticks = strtoull (data, &data, 10);
690 /* iowait_ticks = strtoull (data, &data, 10); */
691 irq_ticks = strtoull (data, &data, 10);
692 sirq_ticks = strtoull (data, &data, 10);
698 *user = (user_ticks + nice_ticks) * 10000000 / hz;
700 *systemt = (system_ticks) * 10000000 / hz;
702 *irq = (irq_ticks) * 10000000 / hz;
704 *sirq = (sirq_ticks) * 10000000 / hz;
706 *idle = (idle_ticks) * 10000000 / hz;
711 * @cpu_id: processor number or -1 to get a summary of all the processors
712 * @data: type of data to retrieve
714 * Get data about a processor on the system, like time spent in user space or idle time.
717 mono_cpu_get_data (int cpu_id, MonoCpuData data, MonoProcessError *error)
722 *error = MONO_PROCESS_ERROR_NONE;
724 case MONO_CPU_USER_TIME:
725 get_cpu_times (cpu_id, &value, NULL, NULL, NULL, NULL);
727 case MONO_CPU_PRIV_TIME:
728 get_cpu_times (cpu_id, NULL, &value, NULL, NULL, NULL);
730 case MONO_CPU_INTR_TIME:
731 get_cpu_times (cpu_id, NULL, NULL, &value, NULL, NULL);
733 case MONO_CPU_DCP_TIME:
734 get_cpu_times (cpu_id, NULL, NULL, NULL, &value, NULL);
736 case MONO_CPU_IDLE_TIME:
737 get_cpu_times (cpu_id, NULL, NULL, NULL, NULL, &value);
748 mono_atexit (void (*func)(void))
750 #ifdef PLATFORM_ANDROID
751 /* Some versions of android libc doesn't define atexit () */
754 return atexit (func);
759 * This function returns the cpu usage in percentage,
760 * normalized on the number of cores.
762 * Warning : the percentage returned can be > 100%. This
763 * might happens on systems like Android which, for
764 * battery and performance reasons, shut down cores and
765 * lie about the number of active cores.
768 mono_cpu_usage (MonoCpuUsageState *prev)
770 gint32 cpu_usage = 0;
771 gint64 cpu_total_time;
772 gint64 cpu_busy_time;
775 struct rusage resource_usage;
780 if (getrusage (RUSAGE_SELF, &resource_usage) == -1) {
781 g_error ("getrusage() failed, errno is %d (%s)\n", errno, strerror (errno));
785 current_time = mono_100ns_ticks ();
786 kernel_time = resource_usage.ru_stime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_stime.tv_usec * 10;
787 user_time = resource_usage.ru_utime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_utime.tv_usec * 10;
789 cpu_busy_time = (user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0));
790 cpu_total_time = (current_time - (prev ? prev->current_time : 0)) * mono_cpu_count ();
793 prev->kernel_time = kernel_time;
794 prev->user_time = user_time;
795 prev->current_time = current_time;
802 if (!GetSystemTimes ((FILETIME*) &idle_time, (FILETIME*) &kernel_time, (FILETIME*) &user_time)) {
803 g_error ("GetSystemTimes() failed, error code is %d\n", GetLastError ());
807 cpu_total_time = (gint64)((user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0)));
808 cpu_busy_time = (gint64)(cpu_total_time - (idle_time - (prev ? prev->idle_time : 0)));
811 prev->idle_time = idle_time;
812 prev->kernel_time = kernel_time;
813 prev->user_time = user_time;
817 if (cpu_total_time > 0 && cpu_busy_time > 0)
818 cpu_usage = (gint32)(cpu_busy_time * 100 / cpu_total_time);