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 = 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 = 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;
211 * mono_process_get_name:
212 * @pid: pid of the process
213 * @buf: byte buffer where to store the name of the prcoess
214 * @len: size of the buffer @buf
216 * Return the name of the process identified by @pid, storing it
217 * inside @buf for a maximum of len bytes (including the terminating 0).
220 mono_process_get_name (gpointer pid, char *buf, int len)
226 size_t data_len = sizeof (struct kinfo_proc2);
227 struct kinfo_proc2 processi;
230 size_t data_len = sizeof (struct kinfo_proc);
231 struct kinfo_proc processi;
232 #endif /* KERN_PROC2 */
234 memset (buf, 0, len);
238 mib [1] = KERN_PROC2;
239 mib [2] = KERN_PROC_PID;
240 mib [3] = GPOINTER_TO_UINT (pid);
241 mib [4] = sizeof(struct kinfo_proc2);
242 mib [5] = 400; /* XXX */
244 res = sysctl (mib, 6, &processi, &data_len, NULL, 0);
246 if (res < 0 || data_len != sizeof (struct kinfo_proc2)) {
252 mib [2] = KERN_PROC_PID;
253 mib [3] = GPOINTER_TO_UINT (pid);
255 res = sysctl (mib, 4, &processi, &data_len, NULL, 0);
256 if (res < 0 || data_len != sizeof (struct kinfo_proc)) {
259 #endif /* KERN_PROC2 */
260 strncpy (buf, processi.kinfo_name_member, len - 1);
267 sprintf (fname, "/proc/%d/cmdline", GPOINTER_TO_INT (pid));
269 file = fopen (fname, "r");
272 r = fread (buf, 1, len - 1, file);
275 p = strrchr (buf, '/');
279 return get_pid_status_item_buf (GPOINTER_TO_INT (pid), "Name", buf, len, NULL);
286 * /proc/pid/stat format:
288 * [0] ppid pgid sid tty_nr tty_pgrp flags min_flt cmin_flt maj_flt cmaj_flt
289 * [10] utime stime cutime cstime prio nice threads 0 start_time vsize rss
290 * [20] rss rsslim start_code end_code start_stack esp eip pending blocked sigign
291 * [30] sigcatch wchan 0 0 exit_signal cpu rt_prio policy
294 #define RET_ERROR(err) do { \
295 if (error) *error = (err); \
300 get_process_stat_item (int pid, int pos, int sum, MonoProcessError *error)
302 #if defined(__APPLE__)
303 double process_user_time = 0, process_system_time = 0;//, process_percent = 0;
305 struct task_basic_info t_info;
306 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT, th_count;
307 thread_array_t th_array;
310 if (task_for_pid(mach_task_self(), pid, &task) != KERN_SUCCESS)
311 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
313 if (task_info(task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count) != KERN_SUCCESS) {
314 mach_port_deallocate (mach_task_self (), task);
315 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
318 if (task_threads(task, &th_array, &th_count) != KERN_SUCCESS) {
319 mach_port_deallocate (mach_task_self (), task);
320 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
323 for (i = 0; i < th_count; i++) {
324 double thread_user_time, thread_system_time;//, thread_percent;
326 struct thread_basic_info th_info;
327 mach_msg_type_number_t th_info_count = THREAD_BASIC_INFO_COUNT;
328 if (thread_info(th_array[i], THREAD_BASIC_INFO, (thread_info_t)&th_info, &th_info_count) == KERN_SUCCESS) {
329 thread_user_time = th_info.user_time.seconds + th_info.user_time.microseconds / 1e6;
330 thread_system_time = th_info.system_time.seconds + th_info.system_time.microseconds / 1e6;
331 //thread_percent = (double)th_info.cpu_usage / TH_USAGE_SCALE;
333 process_user_time += thread_user_time;
334 process_system_time += thread_system_time;
335 //process_percent += th_percent;
339 for (i = 0; i < th_count; i++)
340 mach_port_deallocate(task, th_array[i]);
342 mach_port_deallocate (mach_task_self (), task);
344 process_user_time += t_info.user_time.seconds + t_info.user_time.microseconds / 1e6;
345 process_system_time += t_info.system_time.seconds + t_info.system_time.microseconds / 1e6;
347 if (pos == 10 && sum == TRUE)
348 return (gint64)((process_user_time + process_system_time) * 10000000);
350 return (gint64)(process_user_time * 10000000);
352 return (gint64)(process_system_time * 10000000);
362 g_snprintf (buf, sizeof (buf), "/proc/%d/stat", pid);
363 f = fopen (buf, "r");
365 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
366 len = fread (buf, 1, sizeof (buf), f);
369 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
370 s = strchr (buf, ')');
372 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
374 while (g_ascii_isspace (*s)) s++;
376 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
377 /* skip the status char */
378 while (*s && !g_ascii_isspace (*s)) s++;
380 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
381 for (i = 0; i < pos; ++i) {
382 while (g_ascii_isspace (*s)) s++;
384 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
385 while (*s && !g_ascii_isspace (*s)) s++;
387 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
389 /* we are finally at the needed item */
390 value = strtoul (s, &end, 0);
391 /* add also the following value */
393 while (g_ascii_isspace (*s)) s++;
395 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
396 value += strtoul (s, &end, 0);
399 *error = MONO_PROCESS_ERROR_NONE;
407 static int user_hz = 0;
410 user_hz = sysconf (_SC_CLK_TCK);
419 get_process_stat_time (int pid, int pos, int sum, MonoProcessError *error)
421 gint64 val = get_process_stat_item (pid, pos, sum, error);
422 #if defined(__APPLE__)
425 /* return 100ns ticks */
426 return (val * 10000000) / get_user_hz ();
431 get_pid_status_item (int pid, const char *item, MonoProcessError *error, int multiplier)
433 #if defined(__APPLE__)
434 // ignore the multiplier
438 struct task_basic_info t_info;
439 mach_msg_type_number_t th_count = TASK_BASIC_INFO_COUNT;
441 if (pid == getpid ()) {
442 /* task_for_pid () doesn't work on ios, even for the current process */
443 task = mach_task_self ();
445 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
446 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
449 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &th_count) != KERN_SUCCESS) {
450 if (pid != getpid ())
451 mach_port_deallocate (mach_task_self (), task);
452 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
455 if (strcmp (item, "VmRSS") == 0 || strcmp (item, "VmHWM") == 0 || strcmp (item, "VmData") == 0)
456 ret = t_info.resident_size;
457 else if (strcmp (item, "VmSize") == 0 || strcmp (item, "VmPeak") == 0)
458 ret = t_info.virtual_size;
459 else if (strcmp (item, "Threads") == 0)
464 if (pid != getpid ())
465 mach_port_deallocate (mach_task_self (), task);
472 s = get_pid_status_item_buf (pid, item, buf, sizeof (buf), error);
474 return ((gint64) atol (s)) * multiplier;
480 * mono_process_get_data:
481 * @pid: pid of the process
482 * @data: description of data to return
484 * Return a data item of a process like user time, memory use etc,
485 * according to the @data argumet.
488 mono_process_get_data_with_error (gpointer pid, MonoProcessData data, MonoProcessError *error)
491 int rpid = GPOINTER_TO_INT (pid);
494 *error = MONO_PROCESS_ERROR_OTHER;
497 case MONO_PROCESS_NUM_THREADS:
498 return get_pid_status_item (rpid, "Threads", error, 1);
499 case MONO_PROCESS_USER_TIME:
500 return get_process_stat_time (rpid, 10, FALSE, error);
501 case MONO_PROCESS_SYSTEM_TIME:
502 return get_process_stat_time (rpid, 11, FALSE, error);
503 case MONO_PROCESS_TOTAL_TIME:
504 return get_process_stat_time (rpid, 10, TRUE, error);
505 case MONO_PROCESS_WORKING_SET:
506 return get_pid_status_item (rpid, "VmRSS", error, 1024);
507 case MONO_PROCESS_WORKING_SET_PEAK:
508 val = get_pid_status_item (rpid, "VmHWM", error, 1024);
510 val = get_pid_status_item (rpid, "VmRSS", error, 1024);
512 case MONO_PROCESS_PRIVATE_BYTES:
513 return get_pid_status_item (rpid, "VmData", error, 1024);
514 case MONO_PROCESS_VIRTUAL_BYTES:
515 return get_pid_status_item (rpid, "VmSize", error, 1024);
516 case MONO_PROCESS_VIRTUAL_BYTES_PEAK:
517 val = get_pid_status_item (rpid, "VmPeak", error, 1024);
519 val = get_pid_status_item (rpid, "VmSize", error, 1024);
521 case MONO_PROCESS_FAULTS:
522 return get_process_stat_item (rpid, 6, TRUE, error);
523 case MONO_PROCESS_ELAPSED:
524 return get_process_stat_item (rpid, 18, FALSE, error) / get_user_hz ();
525 case MONO_PROCESS_PPID:
526 return get_process_stat_time (rpid, 0, FALSE, error);
527 case MONO_PROCESS_PAGED_BYTES:
528 return get_pid_status_item (rpid, "VmSwap", error, 1024);
531 case MONO_PROCESS_END:
538 mono_process_get_data (gpointer pid, MonoProcessData data)
540 MonoProcessError error;
541 return mono_process_get_data_with_error (pid, data, &error);
545 mono_process_current_pid ()
547 #if defined(HAVE_UNISTD_H)
548 return (int) getpid ();
549 #elif defined(HOST_WIN32)
550 return (int) GetCurrentProcessId ();
559 * Return the number of processors on the system.
562 mono_cpu_count (void)
565 #ifdef PLATFORM_ANDROID
566 /* Android tries really hard to save power by powering off CPUs on SMP phones which
567 * means the normal way to query cpu count returns a wrong value with userspace API.
568 * Instead we use /sys entries to query the actual hardware CPU count.
570 char buffer[8] = {'\0'};
571 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
572 /* Format of the /sys entry is a cpulist of indexes which in the case
573 * of present is always of the form "0-(n-1)" when there is more than
574 * 1 core, n being the number of CPU cores in the system. Otherwise
575 * the value is simply 0
577 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
578 count = strtol (((char*)buffer) + 2, NULL, 10);
584 #ifdef _SC_NPROCESSORS_ONLN
585 count = sysconf (_SC_NPROCESSORS_ONLN);
592 size_t len = sizeof (int);
595 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
602 GetSystemInfo (&info);
603 return info.dwNumberOfProcessors;
611 get_cpu_times (int cpu_id, gint64 *user, gint64 *systemt, gint64 *irq, gint64 *sirq, gint64 *idle)
615 int hz = get_user_hz ();
616 guint64 user_ticks = 0, nice_ticks = 0, system_ticks = 0, idle_ticks = 0, irq_ticks = 0, sirq_ticks = 0;
617 FILE *f = fopen ("/proc/stat", "r");
621 hz *= mono_cpu_count ();
622 while ((s = fgets (buf, sizeof (buf), f))) {
624 if (cpu_id < 0 && strncmp (s, "cpu", 3) == 0 && g_ascii_isspace (s [3])) {
626 } else if (cpu_id >= 0 && strncmp (s, "cpu", 3) == 0 && strtol (s + 3, &data, 10) == cpu_id) {
634 user_ticks = strtoull (data, &data, 10);
635 nice_ticks = strtoull (data, &data, 10);
636 system_ticks = strtoull (data, &data, 10);
637 idle_ticks = strtoull (data, &data, 10);
638 /* iowait_ticks = strtoull (data, &data, 10); */
639 irq_ticks = strtoull (data, &data, 10);
640 sirq_ticks = strtoull (data, &data, 10);
646 *user = (user_ticks + nice_ticks) * 10000000 / hz;
648 *systemt = (system_ticks) * 10000000 / hz;
650 *irq = (irq_ticks) * 10000000 / hz;
652 *sirq = (sirq_ticks) * 10000000 / hz;
654 *idle = (idle_ticks) * 10000000 / hz;
659 * @cpu_id: processor number or -1 to get a summary of all the processors
660 * @data: type of data to retrieve
662 * Get data about a processor on the system, like time spent in user space or idle time.
665 mono_cpu_get_data (int cpu_id, MonoCpuData data, MonoProcessError *error)
670 *error = MONO_PROCESS_ERROR_NONE;
672 case MONO_CPU_USER_TIME:
673 get_cpu_times (cpu_id, &value, NULL, NULL, NULL, NULL);
675 case MONO_CPU_PRIV_TIME:
676 get_cpu_times (cpu_id, NULL, &value, NULL, NULL, NULL);
678 case MONO_CPU_INTR_TIME:
679 get_cpu_times (cpu_id, NULL, NULL, &value, NULL, NULL);
681 case MONO_CPU_DCP_TIME:
682 get_cpu_times (cpu_id, NULL, NULL, NULL, &value, NULL);
684 case MONO_CPU_IDLE_TIME:
685 get_cpu_times (cpu_id, NULL, NULL, NULL, NULL, &value);
696 mono_atexit (void (*func)(void))
698 #ifdef PLATFORM_ANDROID
699 /* Some versions of android libc doesn't define atexit () */
702 return atexit (func);
707 mono_cpu_usage (MonoCpuUsageState *prev)
709 gint32 cpu_usage = 0;
710 gint64 cpu_total_time;
711 gint64 cpu_busy_time;
714 struct rusage resource_usage;
719 if (getrusage (RUSAGE_SELF, &resource_usage) == -1) {
720 g_error ("getrusage() failed, errno is %d (%s)\n", errno, strerror (errno));
724 current_time = mono_100ns_ticks ();
725 kernel_time = resource_usage.ru_stime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_stime.tv_usec * 10;
726 user_time = resource_usage.ru_utime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_utime.tv_usec * 10;
728 cpu_busy_time = (user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0));
729 cpu_total_time = (current_time - (prev ? prev->current_time : 0)) * mono_cpu_count ();
732 prev->kernel_time = kernel_time;
733 prev->user_time = user_time;
734 prev->current_time = current_time;
741 if (!GetSystemTimes ((FILETIME*) &idle_time, (FILETIME*) &kernel_time, (FILETIME*) &user_time)) {
742 g_error ("GetSystemTimes() failed, error code is %d\n", GetLastError ());
746 cpu_total_time = (gint64)((user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0)));
747 cpu_busy_time = (gint64)(cpu_total_time - (idle_time - (prev ? prev->idle_time : 0)));
750 prev->idle_time = idle_time;
751 prev->kernel_time = kernel_time;
752 prev->user_time = user_time;
756 if (cpu_total_time > 0 && cpu_busy_time > 0)
757 cpu_usage = (gint32)(cpu_busy_time * 100 / cpu_total_time);
759 g_assert (cpu_usage >= 0);
760 g_assert (cpu_usage <= 100);