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_pid_member kp_proc.p_pid
44 # define kinfo_name_member kp_proc.p_comm
45 #elif defined(__OpenBSD__)
46 # define kinfo_pid_member p_pid
47 # define kinfo_name_member p_comm
49 #define kinfo_pid_member ki_pid
50 #define kinfo_name_member ki_comm
57 * @size: a pointer to a location where the size of the returned array is stored
59 * Return an array of pid values for the processes currently running on the system.
60 * The size of the array is stored in @size.
63 mono_process_list (int *size)
69 size_t data_len = sizeof (struct kinfo_proc2) * 400;
70 struct kinfo_proc2 *processes = malloc (data_len);
73 size_t data_len = sizeof (struct kinfo_proc) * 16;
74 struct kinfo_proc *processes;
76 #endif /* KERN_PROC2 */
88 mib [2] = KERN_PROC_ALL;
90 mib [4] = sizeof(struct kinfo_proc2);
91 mib [5] = 400; /* XXX */
93 res = sysctl (mib, 6, processes, &data_len, NULL, 0);
103 mib [2] = KERN_PROC_ALL;
106 res = sysctl (mib, 4, NULL, &data_len, NULL, 0);
109 processes = (struct kinfo_proc *) malloc (data_len);
110 res = sysctl (mib, 4, processes, &data_len, NULL, 0);
120 #endif /* KERN_PROC2 */
123 res = data_len/sizeof (struct kinfo_proc2);
125 res = data_len/sizeof (struct kinfo_proc);
126 #endif /* KERN_PROC2 */
127 buf = (void **) g_realloc (buf, res * sizeof (void*));
128 for (i = 0; i < res; ++i)
129 buf [i] = GINT_TO_POINTER (processes [i].kinfo_pid_member);
134 #elif defined(__HAIKU__)
135 /* FIXME: Add back the code from 9185fcc305e43428d0f40f3ee37c8a405d41c9ae */
136 g_assert_not_reached ();
143 GDir *dir = g_dir_open ("/proc/", 0, NULL);
149 while ((name = g_dir_read_name (dir))) {
152 pid = strtol (name, &nend, 10);
153 if (pid <= 0 || nend == name || *nend)
160 buf = g_realloc (buf, count * sizeof (void*));
162 buf [i++] = GINT_TO_POINTER (pid);
171 static G_GNUC_UNUSED char*
172 get_pid_status_item_buf (int pid, const char *item, char *rbuf, int blen, MonoProcessError *error)
177 int len = strlen (item);
179 g_snprintf (buf, sizeof (buf), "/proc/%d/status", pid);
180 f = fopen (buf, "r");
183 *error = MONO_PROCESS_ERROR_NOT_FOUND;
186 while ((s = fgets (buf, blen, f))) {
189 if (strncmp (buf, item, len))
192 while (g_ascii_isspace (*s)) s++;
195 while (g_ascii_isspace (*s)) s++;
198 strncpy (rbuf, s, MIN (len, blen));
199 rbuf [MIN (len, blen) - 1] = 0;
201 *error = MONO_PROCESS_ERROR_NONE;
206 *error = MONO_PROCESS_ERROR_OTHER;
213 #define KINFO_PROC struct kinfo_proc2
215 #define KINFO_PROC struct kinfo_proc
219 sysctl_kinfo_proc (gpointer pid, KINFO_PROC* processi)
222 size_t data_len = sizeof (KINFO_PROC);
227 mib [1] = KERN_PROC2;
228 mib [2] = KERN_PROC_PID;
229 mib [3] = GPOINTER_TO_UINT (pid);
230 mib [4] = sizeof(KINFO_PROC);
231 mib [5] = 400; /* XXX */
233 res = sysctl (mib, 6, processi, &data_len, NULL, 0);
238 mib [2] = KERN_PROC_PID;
239 mib [3] = GPOINTER_TO_UINT (pid);
241 res = sysctl (mib, 4, processi, &data_len, NULL, 0);
242 #endif /* KERN_PROC2 */
244 if (res < 0 || data_len != sizeof (KINFO_PROC))
249 #endif /* USE_SYSCTL */
252 * mono_process_get_name:
253 * @pid: pid of the process
254 * @buf: byte buffer where to store the name of the prcoess
255 * @len: size of the buffer @buf
257 * Return the name of the process identified by @pid, storing it
258 * inside @buf for a maximum of len bytes (including the terminating 0).
261 mono_process_get_name (gpointer pid, char *buf, int len)
266 memset (buf, 0, len);
268 if (sysctl_kinfo_proc (pid, &processi))
269 strncpy (buf, processi.kinfo_name_member, len - 1);
277 sprintf (fname, "/proc/%d/cmdline", GPOINTER_TO_INT (pid));
279 file = fopen (fname, "r");
282 r = fread (buf, 1, len - 1, file);
285 p = strrchr (buf, '/');
289 return get_pid_status_item_buf (GPOINTER_TO_INT (pid), "Name", buf, len, NULL);
296 mono_process_get_times (gpointer pid, gint64 *start_time, gint64 *user_time, gint64 *kernel_time)
299 *user_time = mono_process_get_data (pid, MONO_PROCESS_USER_TIME);
302 *kernel_time = mono_process_get_data (pid, MONO_PROCESS_SYSTEM_TIME);
311 if (sysctl_kinfo_proc (pid, &processi))
312 *start_time = mono_100ns_datetime_from_timeval (processi.kp_proc.p_starttime);
316 if (*start_time == 0) {
317 static guint64 boot_time = 0;
319 boot_time = mono_100ns_datetime () - ((guint64)mono_msec_ticks ()) * 10000;
321 *start_time = boot_time + mono_process_get_data (pid, MONO_PROCESS_ELAPSED);
327 * /proc/pid/stat format:
329 * [0] ppid pgid sid tty_nr tty_pgrp flags min_flt cmin_flt maj_flt cmaj_flt
330 * [10] utime stime cutime cstime prio nice threads 0 start_time vsize
331 * [20] rss rsslim start_code end_code start_stack esp eip pending blocked sigign
332 * [30] sigcatch wchan 0 0 exit_signal cpu rt_prio policy
335 #define RET_ERROR(err) do { \
336 if (error) *error = (err); \
341 get_process_stat_item (int pid, int pos, int sum, MonoProcessError *error)
343 #if defined(__APPLE__)
344 double process_user_time = 0, process_system_time = 0;//, process_percent = 0;
346 struct task_basic_info t_info;
347 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT, th_count;
348 thread_array_t th_array;
351 if (pid == getpid ()) {
352 /* task_for_pid () doesn't work on ios, even for the current process */
353 task = mach_task_self ();
355 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
356 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
359 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count) != KERN_SUCCESS) {
360 if (pid != getpid ())
361 mach_port_deallocate (mach_task_self (), task);
362 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
365 if (task_threads(task, &th_array, &th_count) != KERN_SUCCESS) {
366 if (pid != getpid ())
367 mach_port_deallocate (mach_task_self (), task);
368 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
371 for (i = 0; i < th_count; i++) {
372 double thread_user_time, thread_system_time;//, thread_percent;
374 struct thread_basic_info th_info;
375 mach_msg_type_number_t th_info_count = THREAD_BASIC_INFO_COUNT;
376 if (thread_info(th_array[i], THREAD_BASIC_INFO, (thread_info_t)&th_info, &th_info_count) == KERN_SUCCESS) {
377 thread_user_time = th_info.user_time.seconds + th_info.user_time.microseconds / 1e6;
378 thread_system_time = th_info.system_time.seconds + th_info.system_time.microseconds / 1e6;
379 //thread_percent = (double)th_info.cpu_usage / TH_USAGE_SCALE;
381 process_user_time += thread_user_time;
382 process_system_time += thread_system_time;
383 //process_percent += th_percent;
387 for (i = 0; i < th_count; i++)
388 mach_port_deallocate(task, th_array[i]);
390 if (pid != getpid ())
391 mach_port_deallocate (mach_task_self (), task);
393 process_user_time += t_info.user_time.seconds + t_info.user_time.microseconds / 1e6;
394 process_system_time += t_info.system_time.seconds + t_info.system_time.microseconds / 1e6;
396 if (pos == 10 && sum == TRUE)
397 return (gint64)((process_user_time + process_system_time) * 10000000);
399 return (gint64)(process_user_time * 10000000);
401 return (gint64)(process_system_time * 10000000);
411 g_snprintf (buf, sizeof (buf), "/proc/%d/stat", pid);
412 f = fopen (buf, "r");
414 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
415 len = fread (buf, 1, sizeof (buf), f);
418 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
419 s = strchr (buf, ')');
421 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
423 while (g_ascii_isspace (*s)) s++;
425 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
426 /* skip the status char */
427 while (*s && !g_ascii_isspace (*s)) s++;
429 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
430 for (i = 0; i < pos; ++i) {
431 while (g_ascii_isspace (*s)) s++;
433 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
434 while (*s && !g_ascii_isspace (*s)) s++;
436 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
438 /* we are finally at the needed item */
439 value = strtoul (s, &end, 0);
440 /* add also the following value */
442 while (g_ascii_isspace (*s)) s++;
444 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
445 value += strtoul (s, &end, 0);
448 *error = MONO_PROCESS_ERROR_NONE;
456 static int user_hz = 0;
459 user_hz = sysconf (_SC_CLK_TCK);
468 get_process_stat_time (int pid, int pos, int sum, MonoProcessError *error)
470 gint64 val = get_process_stat_item (pid, pos, sum, error);
471 #if defined(__APPLE__)
474 /* return 100ns ticks */
475 return (val * 10000000) / get_user_hz ();
480 get_pid_status_item (int pid, const char *item, MonoProcessError *error, int multiplier)
482 #if defined(__APPLE__)
483 // ignore the multiplier
487 struct task_basic_info t_info;
488 mach_msg_type_number_t th_count = TASK_BASIC_INFO_COUNT;
490 if (pid == getpid ()) {
491 /* task_for_pid () doesn't work on ios, even for the current process */
492 task = mach_task_self ();
494 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
495 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
498 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &th_count) != KERN_SUCCESS) {
499 if (pid != getpid ())
500 mach_port_deallocate (mach_task_self (), task);
501 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
504 if (strcmp (item, "VmRSS") == 0 || strcmp (item, "VmHWM") == 0 || strcmp (item, "VmData") == 0)
505 ret = t_info.resident_size;
506 else if (strcmp (item, "VmSize") == 0 || strcmp (item, "VmPeak") == 0)
507 ret = t_info.virtual_size;
508 else if (strcmp (item, "Threads") == 0)
513 if (pid != getpid ())
514 mach_port_deallocate (mach_task_self (), task);
521 s = get_pid_status_item_buf (pid, item, buf, sizeof (buf), error);
523 return ((gint64) atol (s)) * multiplier;
529 * mono_process_get_data:
530 * @pid: pid of the process
531 * @data: description of data to return
533 * Return a data item of a process like user time, memory use etc,
534 * according to the @data argumet.
537 mono_process_get_data_with_error (gpointer pid, MonoProcessData data, MonoProcessError *error)
540 int rpid = GPOINTER_TO_INT (pid);
543 *error = MONO_PROCESS_ERROR_OTHER;
546 case MONO_PROCESS_NUM_THREADS:
547 return get_pid_status_item (rpid, "Threads", error, 1);
548 case MONO_PROCESS_USER_TIME:
549 return get_process_stat_time (rpid, 10, FALSE, error);
550 case MONO_PROCESS_SYSTEM_TIME:
551 return get_process_stat_time (rpid, 11, FALSE, error);
552 case MONO_PROCESS_TOTAL_TIME:
553 return get_process_stat_time (rpid, 10, TRUE, error);
554 case MONO_PROCESS_WORKING_SET:
555 return get_pid_status_item (rpid, "VmRSS", error, 1024);
556 case MONO_PROCESS_WORKING_SET_PEAK:
557 val = get_pid_status_item (rpid, "VmHWM", error, 1024);
559 val = get_pid_status_item (rpid, "VmRSS", error, 1024);
561 case MONO_PROCESS_PRIVATE_BYTES:
562 return get_pid_status_item (rpid, "VmData", error, 1024);
563 case MONO_PROCESS_VIRTUAL_BYTES:
564 return get_pid_status_item (rpid, "VmSize", error, 1024);
565 case MONO_PROCESS_VIRTUAL_BYTES_PEAK:
566 val = get_pid_status_item (rpid, "VmPeak", error, 1024);
568 val = get_pid_status_item (rpid, "VmSize", error, 1024);
570 case MONO_PROCESS_FAULTS:
571 return get_process_stat_item (rpid, 6, TRUE, error);
572 case MONO_PROCESS_ELAPSED:
573 return get_process_stat_time (rpid, 18, FALSE, error);
574 case MONO_PROCESS_PPID:
575 return get_process_stat_time (rpid, 0, FALSE, error);
576 case MONO_PROCESS_PAGED_BYTES:
577 return get_pid_status_item (rpid, "VmSwap", error, 1024);
580 case MONO_PROCESS_END:
587 mono_process_get_data (gpointer pid, MonoProcessData data)
589 MonoProcessError error;
590 return mono_process_get_data_with_error (pid, data, &error);
594 mono_process_current_pid ()
596 #if defined(HAVE_UNISTD_H)
597 return (int) getpid ();
598 #elif defined(HOST_WIN32)
599 return (int) GetCurrentProcessId ();
608 * Return the number of processors on the system.
611 mono_cpu_count (void)
615 GetSystemInfo (&info);
616 return info.dwNumberOfProcessors;
619 #ifdef PLATFORM_ANDROID
620 /* Android tries really hard to save power by powering off CPUs on SMP phones which
621 * means the normal way to query cpu count returns a wrong value with userspace API.
622 * Instead we use /sys entries to query the actual hardware CPU count.
624 char buffer[8] = {'\0'};
625 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
626 /* Format of the /sys entry is a cpulist of indexes which in the case
627 * of present is always of the form "0-(n-1)" when there is more than
628 * 1 core, n being the number of CPU cores in the system. Otherwise
629 * the value is simply 0
631 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
632 count = strtol (((char*)buffer) + 2, NULL, 10);
638 #ifdef _SC_NPROCESSORS_CONF
639 count = sysconf (_SC_NPROCESSORS_CONF);
646 size_t len = sizeof (int);
649 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
659 get_cpu_times (int cpu_id, gint64 *user, gint64 *systemt, gint64 *irq, gint64 *sirq, gint64 *idle)
663 int hz = get_user_hz ();
664 guint64 user_ticks = 0, nice_ticks = 0, system_ticks = 0, idle_ticks = 0, irq_ticks = 0, sirq_ticks = 0;
665 FILE *f = fopen ("/proc/stat", "r");
669 hz *= mono_cpu_count ();
670 while ((s = fgets (buf, sizeof (buf), f))) {
672 if (cpu_id < 0 && strncmp (s, "cpu", 3) == 0 && g_ascii_isspace (s [3])) {
674 } else if (cpu_id >= 0 && strncmp (s, "cpu", 3) == 0 && strtol (s + 3, &data, 10) == cpu_id) {
682 user_ticks = strtoull (data, &data, 10);
683 nice_ticks = strtoull (data, &data, 10);
684 system_ticks = strtoull (data, &data, 10);
685 idle_ticks = strtoull (data, &data, 10);
686 /* iowait_ticks = strtoull (data, &data, 10); */
687 irq_ticks = strtoull (data, &data, 10);
688 sirq_ticks = strtoull (data, &data, 10);
694 *user = (user_ticks + nice_ticks) * 10000000 / hz;
696 *systemt = (system_ticks) * 10000000 / hz;
698 *irq = (irq_ticks) * 10000000 / hz;
700 *sirq = (sirq_ticks) * 10000000 / hz;
702 *idle = (idle_ticks) * 10000000 / hz;
707 * @cpu_id: processor number or -1 to get a summary of all the processors
708 * @data: type of data to retrieve
710 * Get data about a processor on the system, like time spent in user space or idle time.
713 mono_cpu_get_data (int cpu_id, MonoCpuData data, MonoProcessError *error)
718 *error = MONO_PROCESS_ERROR_NONE;
720 case MONO_CPU_USER_TIME:
721 get_cpu_times (cpu_id, &value, NULL, NULL, NULL, NULL);
723 case MONO_CPU_PRIV_TIME:
724 get_cpu_times (cpu_id, NULL, &value, NULL, NULL, NULL);
726 case MONO_CPU_INTR_TIME:
727 get_cpu_times (cpu_id, NULL, NULL, &value, NULL, NULL);
729 case MONO_CPU_DCP_TIME:
730 get_cpu_times (cpu_id, NULL, NULL, NULL, &value, NULL);
732 case MONO_CPU_IDLE_TIME:
733 get_cpu_times (cpu_id, NULL, NULL, NULL, NULL, &value);
744 mono_atexit (void (*func)(void))
746 #ifdef PLATFORM_ANDROID
747 /* Some versions of android libc doesn't define atexit () */
750 return atexit (func);
755 mono_cpu_usage (MonoCpuUsageState *prev)
757 gint32 cpu_usage = 0;
758 gint64 cpu_total_time;
759 gint64 cpu_busy_time;
762 struct rusage resource_usage;
767 if (getrusage (RUSAGE_SELF, &resource_usage) == -1) {
768 g_error ("getrusage() failed, errno is %d (%s)\n", errno, strerror (errno));
772 current_time = mono_100ns_ticks ();
773 kernel_time = resource_usage.ru_stime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_stime.tv_usec * 10;
774 user_time = resource_usage.ru_utime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_utime.tv_usec * 10;
776 cpu_busy_time = (user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0));
777 cpu_total_time = (current_time - (prev ? prev->current_time : 0)) * mono_cpu_count ();
780 prev->kernel_time = kernel_time;
781 prev->user_time = user_time;
782 prev->current_time = current_time;
789 if (!GetSystemTimes ((FILETIME*) &idle_time, (FILETIME*) &kernel_time, (FILETIME*) &user_time)) {
790 g_error ("GetSystemTimes() failed, error code is %d\n", GetLastError ());
794 cpu_total_time = (gint64)((user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0)));
795 cpu_busy_time = (gint64)(cpu_total_time - (idle_time - (prev ? prev->idle_time : 0)));
798 prev->idle_time = idle_time;
799 prev->kernel_time = kernel_time;
800 prev->user_time = user_time;
804 if (cpu_total_time > 0 && cpu_busy_time > 0)
805 cpu_usage = (gint32)(cpu_busy_time * 100 / cpu_total_time);
807 g_assert (cpu_usage >= 0);
808 g_assert (cpu_usage <= 100);