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(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
24 #include <sys/errno.h>
25 #include <sys/param.h>
26 #include <sys/types.h>
27 #include <sys/sysctl.h>
29 #if defined(__APPLE__)
30 #include <mach/mach.h>
32 #ifdef HAVE_SYS_USER_H
35 #ifdef HAVE_STRUCT_KINFO_PROC_KP_PROC
36 # define kinfo_pid_member kp_proc.p_pid
37 # define kinfo_name_member kp_proc.p_comm
38 #elif defined(__OpenBSD__)
39 # define kinfo_pid_member p_pid
40 # define kinfo_name_member p_comm
42 #define kinfo_pid_member ki_pid
43 #define kinfo_name_member ki_comm
50 * @size: a pointer to a location where the size of the returned array is stored
52 * Return an array of pid values for the processes currently running on the system.
53 * The size of the array is stored in @size.
56 mono_process_list (int *size)
62 size_t data_len = sizeof (struct kinfo_proc2) * 400;
63 struct kinfo_proc2 *processes = malloc (data_len);
66 size_t data_len = sizeof (struct kinfo_proc) * 16;
67 struct kinfo_proc *processes;
69 #endif /* KERN_PROC2 */
81 mib [2] = KERN_PROC_ALL;
83 mib [4] = sizeof(struct kinfo_proc2);
84 mib [5] = 400; /* XXX */
86 res = sysctl (mib, 6, processes, &data_len, NULL, 0);
96 mib [2] = KERN_PROC_ALL;
99 res = sysctl (mib, 4, NULL, &data_len, NULL, 0);
102 processes = malloc (data_len);
103 res = sysctl (mib, 4, processes, &data_len, NULL, 0);
113 #endif /* KERN_PROC2 */
116 res = data_len/sizeof (struct kinfo_proc2);
118 res = data_len/sizeof (struct kinfo_proc);
119 #endif /* KERN_PROC2 */
120 buf = g_realloc (buf, res * sizeof (void*));
121 for (i = 0; i < res; ++i)
122 buf [i] = GINT_TO_POINTER (processes [i].kinfo_pid_member);
127 #elif defined(__HAIKU__)
128 /* FIXME: Add back the code from 9185fcc305e43428d0f40f3ee37c8a405d41c9ae */
129 g_assert_not_reached ();
136 GDir *dir = g_dir_open ("/proc/", 0, NULL);
142 while ((name = g_dir_read_name (dir))) {
145 pid = strtol (name, &nend, 10);
146 if (pid <= 0 || nend == name || *nend)
153 buf = g_realloc (buf, count * sizeof (void*));
155 buf [i++] = GINT_TO_POINTER (pid);
164 static G_GNUC_UNUSED char*
165 get_pid_status_item_buf (int pid, const char *item, char *rbuf, int blen, MonoProcessError *error)
170 int len = strlen (item);
172 g_snprintf (buf, sizeof (buf), "/proc/%d/status", pid);
173 f = fopen (buf, "r");
176 *error = MONO_PROCESS_ERROR_NOT_FOUND;
179 while ((s = fgets (buf, blen, f))) {
182 if (strncmp (buf, item, len))
185 while (g_ascii_isspace (*s)) s++;
188 while (g_ascii_isspace (*s)) s++;
191 strncpy (rbuf, s, MIN (len, blen));
192 rbuf [MIN (len, blen) - 1] = 0;
194 *error = MONO_PROCESS_ERROR_NONE;
199 *error = MONO_PROCESS_ERROR_OTHER;
206 #define KINFO_PROC struct kinfo_proc2
208 #define KINFO_PROC struct kinfo_proc
212 sysctl_kinfo_proc (gpointer pid, KINFO_PROC* processi)
215 size_t data_len = sizeof (KINFO_PROC);
220 mib [1] = KERN_PROC2;
221 mib [2] = KERN_PROC_PID;
222 mib [3] = GPOINTER_TO_UINT (pid);
223 mib [4] = sizeof(KINFO_PROC);
224 mib [5] = 400; /* XXX */
226 res = sysctl (mib, 6, processi, &data_len, NULL, 0);
231 mib [2] = KERN_PROC_PID;
232 mib [3] = GPOINTER_TO_UINT (pid);
234 res = sysctl (mib, 4, processi, &data_len, NULL, 0);
235 #endif /* KERN_PROC2 */
237 if (res < 0 || data_len != sizeof (KINFO_PROC))
242 #endif /* USE_SYSCTL */
245 * mono_process_get_name:
246 * @pid: pid of the process
247 * @buf: byte buffer where to store the name of the prcoess
248 * @len: size of the buffer @buf
250 * Return the name of the process identified by @pid, storing it
251 * inside @buf for a maximum of len bytes (including the terminating 0).
254 mono_process_get_name (gpointer pid, char *buf, int len)
259 memset (buf, 0, len);
261 if (sysctl_kinfo_proc (pid, &processi))
262 strncpy (buf, processi.kinfo_name_member, len - 1);
270 sprintf (fname, "/proc/%d/cmdline", GPOINTER_TO_INT (pid));
272 file = fopen (fname, "r");
275 r = fread (buf, 1, len - 1, file);
278 p = strrchr (buf, '/');
282 return get_pid_status_item_buf (GPOINTER_TO_INT (pid), "Name", buf, len, NULL);
289 mono_process_get_times (gpointer pid, gint64 *start_time, gint64 *user_time, gint64 *kernel_time)
292 *user_time = mono_process_get_data (pid, MONO_PROCESS_USER_TIME);
295 *kernel_time = mono_process_get_data (pid, MONO_PROCESS_SYSTEM_TIME);
304 if (sysctl_kinfo_proc (pid, &processi))
305 *start_time = mono_100ns_datetime_from_timeval (processi.kp_proc.p_starttime);
309 if (*start_time == 0) {
310 static guint64 boot_time = 0;
312 boot_time = mono_100ns_datetime () - ((guint64)mono_msec_ticks ()) * 10000;
314 *start_time = boot_time + mono_process_get_data (pid, MONO_PROCESS_ELAPSED);
320 * /proc/pid/stat format:
322 * [0] ppid pgid sid tty_nr tty_pgrp flags min_flt cmin_flt maj_flt cmaj_flt
323 * [10] utime stime cutime cstime prio nice threads 0 start_time vsize
324 * [20] rss rsslim start_code end_code start_stack esp eip pending blocked sigign
325 * [30] sigcatch wchan 0 0 exit_signal cpu rt_prio policy
328 #define RET_ERROR(err) do { \
329 if (error) *error = (err); \
334 get_process_stat_item (int pid, int pos, int sum, MonoProcessError *error)
336 #if defined(__APPLE__)
337 double process_user_time = 0, process_system_time = 0;//, process_percent = 0;
339 struct task_basic_info t_info;
340 mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT, th_count;
341 thread_array_t th_array;
344 if (task_for_pid(mach_task_self(), pid, &task) != KERN_SUCCESS)
345 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
347 if (task_info(task, TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count) != KERN_SUCCESS) {
348 mach_port_deallocate (mach_task_self (), task);
349 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
352 if (task_threads(task, &th_array, &th_count) != KERN_SUCCESS) {
353 mach_port_deallocate (mach_task_self (), task);
354 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
357 for (i = 0; i < th_count; i++) {
358 double thread_user_time, thread_system_time;//, thread_percent;
360 struct thread_basic_info th_info;
361 mach_msg_type_number_t th_info_count = THREAD_BASIC_INFO_COUNT;
362 if (thread_info(th_array[i], THREAD_BASIC_INFO, (thread_info_t)&th_info, &th_info_count) == KERN_SUCCESS) {
363 thread_user_time = th_info.user_time.seconds + th_info.user_time.microseconds / 1e6;
364 thread_system_time = th_info.system_time.seconds + th_info.system_time.microseconds / 1e6;
365 //thread_percent = (double)th_info.cpu_usage / TH_USAGE_SCALE;
367 process_user_time += thread_user_time;
368 process_system_time += thread_system_time;
369 //process_percent += th_percent;
373 for (i = 0; i < th_count; i++)
374 mach_port_deallocate(task, th_array[i]);
376 mach_port_deallocate (mach_task_self (), task);
378 process_user_time += t_info.user_time.seconds + t_info.user_time.microseconds / 1e6;
379 process_system_time += t_info.system_time.seconds + t_info.system_time.microseconds / 1e6;
381 if (pos == 10 && sum == TRUE)
382 return (gint64)((process_user_time + process_system_time) * 10000000);
384 return (gint64)(process_user_time * 10000000);
386 return (gint64)(process_system_time * 10000000);
396 g_snprintf (buf, sizeof (buf), "/proc/%d/stat", pid);
397 f = fopen (buf, "r");
399 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
400 len = fread (buf, 1, sizeof (buf), f);
403 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
404 s = strchr (buf, ')');
406 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
408 while (g_ascii_isspace (*s)) s++;
410 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
411 /* skip the status char */
412 while (*s && !g_ascii_isspace (*s)) s++;
414 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
415 for (i = 0; i < pos; ++i) {
416 while (g_ascii_isspace (*s)) s++;
418 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
419 while (*s && !g_ascii_isspace (*s)) s++;
421 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
423 /* we are finally at the needed item */
424 value = strtoul (s, &end, 0);
425 /* add also the following value */
427 while (g_ascii_isspace (*s)) s++;
429 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
430 value += strtoul (s, &end, 0);
433 *error = MONO_PROCESS_ERROR_NONE;
441 static int user_hz = 0;
444 user_hz = sysconf (_SC_CLK_TCK);
453 get_process_stat_time (int pid, int pos, int sum, MonoProcessError *error)
455 gint64 val = get_process_stat_item (pid, pos, sum, error);
456 #if defined(__APPLE__)
459 /* return 100ns ticks */
460 return (val * 10000000) / get_user_hz ();
465 get_pid_status_item (int pid, const char *item, MonoProcessError *error, int multiplier)
467 #if defined(__APPLE__)
468 // ignore the multiplier
472 struct task_basic_info t_info;
473 mach_msg_type_number_t th_count = TASK_BASIC_INFO_COUNT;
475 if (pid == getpid ()) {
476 /* task_for_pid () doesn't work on ios, even for the current process */
477 task = mach_task_self ();
479 if (task_for_pid (mach_task_self (), pid, &task) != KERN_SUCCESS)
480 RET_ERROR (MONO_PROCESS_ERROR_NOT_FOUND);
483 if (task_info (task, TASK_BASIC_INFO, (task_info_t)&t_info, &th_count) != KERN_SUCCESS) {
484 if (pid != getpid ())
485 mach_port_deallocate (mach_task_self (), task);
486 RET_ERROR (MONO_PROCESS_ERROR_OTHER);
489 if (strcmp (item, "VmRSS") == 0 || strcmp (item, "VmHWM") == 0 || strcmp (item, "VmData") == 0)
490 ret = t_info.resident_size;
491 else if (strcmp (item, "VmSize") == 0 || strcmp (item, "VmPeak") == 0)
492 ret = t_info.virtual_size;
493 else if (strcmp (item, "Threads") == 0)
498 if (pid != getpid ())
499 mach_port_deallocate (mach_task_self (), task);
506 s = get_pid_status_item_buf (pid, item, buf, sizeof (buf), error);
508 return ((gint64) atol (s)) * multiplier;
514 * mono_process_get_data:
515 * @pid: pid of the process
516 * @data: description of data to return
518 * Return a data item of a process like user time, memory use etc,
519 * according to the @data argumet.
522 mono_process_get_data_with_error (gpointer pid, MonoProcessData data, MonoProcessError *error)
525 int rpid = GPOINTER_TO_INT (pid);
528 *error = MONO_PROCESS_ERROR_OTHER;
531 case MONO_PROCESS_NUM_THREADS:
532 return get_pid_status_item (rpid, "Threads", error, 1);
533 case MONO_PROCESS_USER_TIME:
534 return get_process_stat_time (rpid, 10, FALSE, error);
535 case MONO_PROCESS_SYSTEM_TIME:
536 return get_process_stat_time (rpid, 11, FALSE, error);
537 case MONO_PROCESS_TOTAL_TIME:
538 return get_process_stat_time (rpid, 10, TRUE, error);
539 case MONO_PROCESS_WORKING_SET:
540 return get_pid_status_item (rpid, "VmRSS", error, 1024);
541 case MONO_PROCESS_WORKING_SET_PEAK:
542 val = get_pid_status_item (rpid, "VmHWM", error, 1024);
544 val = get_pid_status_item (rpid, "VmRSS", error, 1024);
546 case MONO_PROCESS_PRIVATE_BYTES:
547 return get_pid_status_item (rpid, "VmData", error, 1024);
548 case MONO_PROCESS_VIRTUAL_BYTES:
549 return get_pid_status_item (rpid, "VmSize", error, 1024);
550 case MONO_PROCESS_VIRTUAL_BYTES_PEAK:
551 val = get_pid_status_item (rpid, "VmPeak", error, 1024);
553 val = get_pid_status_item (rpid, "VmSize", error, 1024);
555 case MONO_PROCESS_FAULTS:
556 return get_process_stat_item (rpid, 6, TRUE, error);
557 case MONO_PROCESS_ELAPSED:
558 return get_process_stat_time (rpid, 18, FALSE, error);
559 case MONO_PROCESS_PPID:
560 return get_process_stat_time (rpid, 0, FALSE, error);
561 case MONO_PROCESS_PAGED_BYTES:
562 return get_pid_status_item (rpid, "VmSwap", error, 1024);
565 case MONO_PROCESS_END:
572 mono_process_get_data (gpointer pid, MonoProcessData data)
574 MonoProcessError error;
575 return mono_process_get_data_with_error (pid, data, &error);
579 mono_process_current_pid ()
581 #if defined(HAVE_UNISTD_H)
582 return (int) getpid ();
583 #elif defined(HOST_WIN32)
584 return (int) GetCurrentProcessId ();
593 * Return the number of processors on the system.
596 mono_cpu_count (void)
599 #ifdef PLATFORM_ANDROID
600 /* Android tries really hard to save power by powering off CPUs on SMP phones which
601 * means the normal way to query cpu count returns a wrong value with userspace API.
602 * Instead we use /sys entries to query the actual hardware CPU count.
604 char buffer[8] = {'\0'};
605 int present = open ("/sys/devices/system/cpu/present", O_RDONLY);
606 /* Format of the /sys entry is a cpulist of indexes which in the case
607 * of present is always of the form "0-(n-1)" when there is more than
608 * 1 core, n being the number of CPU cores in the system. Otherwise
609 * the value is simply 0
611 if (present != -1 && read (present, (char*)buffer, sizeof (buffer)) > 3)
612 count = strtol (((char*)buffer) + 2, NULL, 10);
618 #ifdef _SC_NPROCESSORS_ONLN
619 count = sysconf (_SC_NPROCESSORS_ONLN);
626 size_t len = sizeof (int);
629 if (sysctl (mib, 2, &count, &len, NULL, 0) == 0)
636 GetSystemInfo (&info);
637 return info.dwNumberOfProcessors;
645 get_cpu_times (int cpu_id, gint64 *user, gint64 *systemt, gint64 *irq, gint64 *sirq, gint64 *idle)
649 int hz = get_user_hz ();
650 guint64 user_ticks = 0, nice_ticks = 0, system_ticks = 0, idle_ticks = 0, irq_ticks = 0, sirq_ticks = 0;
651 FILE *f = fopen ("/proc/stat", "r");
655 hz *= mono_cpu_count ();
656 while ((s = fgets (buf, sizeof (buf), f))) {
658 if (cpu_id < 0 && strncmp (s, "cpu", 3) == 0 && g_ascii_isspace (s [3])) {
660 } else if (cpu_id >= 0 && strncmp (s, "cpu", 3) == 0 && strtol (s + 3, &data, 10) == cpu_id) {
668 user_ticks = strtoull (data, &data, 10);
669 nice_ticks = strtoull (data, &data, 10);
670 system_ticks = strtoull (data, &data, 10);
671 idle_ticks = strtoull (data, &data, 10);
672 /* iowait_ticks = strtoull (data, &data, 10); */
673 irq_ticks = strtoull (data, &data, 10);
674 sirq_ticks = strtoull (data, &data, 10);
680 *user = (user_ticks + nice_ticks) * 10000000 / hz;
682 *systemt = (system_ticks) * 10000000 / hz;
684 *irq = (irq_ticks) * 10000000 / hz;
686 *sirq = (sirq_ticks) * 10000000 / hz;
688 *idle = (idle_ticks) * 10000000 / hz;
693 * @cpu_id: processor number or -1 to get a summary of all the processors
694 * @data: type of data to retrieve
696 * Get data about a processor on the system, like time spent in user space or idle time.
699 mono_cpu_get_data (int cpu_id, MonoCpuData data, MonoProcessError *error)
704 *error = MONO_PROCESS_ERROR_NONE;
706 case MONO_CPU_USER_TIME:
707 get_cpu_times (cpu_id, &value, NULL, NULL, NULL, NULL);
709 case MONO_CPU_PRIV_TIME:
710 get_cpu_times (cpu_id, NULL, &value, NULL, NULL, NULL);
712 case MONO_CPU_INTR_TIME:
713 get_cpu_times (cpu_id, NULL, NULL, &value, NULL, NULL);
715 case MONO_CPU_DCP_TIME:
716 get_cpu_times (cpu_id, NULL, NULL, NULL, &value, NULL);
718 case MONO_CPU_IDLE_TIME:
719 get_cpu_times (cpu_id, NULL, NULL, NULL, NULL, &value);
730 mono_atexit (void (*func)(void))
732 #ifdef PLATFORM_ANDROID
733 /* Some versions of android libc doesn't define atexit () */
736 return atexit (func);