osfmk/kperf/task_samplers.c

   1 /*
   2  * Copyright (c) 2016 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <kperf/task_samplers.h>
  30 #include <kperf/context.h>
  31 #include <kperf/buffer.h>
  32 #include <kern/thread.h>
  33
  34 #include <kern/task.h>
  35
  36 extern void memorystatus_proc_flags_unsafe(void * v, boolean_t *is_dirty,
  37                 boolean_t *is_dirty_tracked, boolean_t *allow_idle_exit);
  38
  39 void
  40 kperf_task_snapshot_sample(task_t task, struct kperf_task_snapshot *tksn)
  41 {
  42         BUF_INFO(PERF_TK_SNAP_SAMPLE | DBG_FUNC_START);
  43
  44         assert(tksn != NULL);
  45
  46         tksn->kptksn_flags = 0;
  47         if (task->effective_policy.tep_darwinbg) {
  48                 tksn->kptksn_flags |= KPERF_TASK_FLAG_DARWIN_BG;
  49         }
  50         if (task->requested_policy.trp_role == TASK_FOREGROUND_APPLICATION) {
  51                 tksn->kptksn_flags |= KPERF_TASK_FLAG_FOREGROUND;
  52         }
  53         if (task->requested_policy.trp_boosted == 1) {
  54                 tksn->kptksn_flags |= KPERF_TASK_FLAG_BOOSTED;
  55         }
  56 #if CONFIG_MEMORYSTATUS
  57         boolean_t dirty = FALSE, dirty_tracked = FALSE, allow_idle_exit = FALSE;
  58         memorystatus_proc_flags_unsafe(task->bsd_info, &dirty, &dirty_tracked, &allow_idle_exit);
  59         if (dirty) {
  60                 tksn->kptksn_flags |= KPERF_TASK_FLAG_DIRTY;
  61         }
  62         if (dirty_tracked) {
  63                 tksn->kptksn_flags |= KPERF_TASK_FLAG_DIRTY_TRACKED;
  64         }
  65         if (allow_idle_exit) {
  66                 tksn->kptksn_flags |= KPERF_TASK_ALLOW_IDLE_EXIT;
  67         }
  68 #endif
  69
  70         tksn->kptksn_suspend_count = task->suspend_count;
  71         tksn->kptksn_pageins = task->pageins;
  72         tksn->kptksn_user_time_in_terminated_threads = task->total_user_time;
  73         tksn->kptksn_system_time_in_terminated_threads = task->total_system_time;
  74
  75         BUF_INFO(PERF_TK_SNAP_SAMPLE | DBG_FUNC_END);
  76 }
  77
  78 void
  79 kperf_task_snapshot_log(struct kperf_task_snapshot *tksn)
  80 {
  81         assert(tksn != NULL);
  82
  83 #if defined(__LP64__)
  84         BUF_DATA(PERF_TK_SNAP_DATA, tksn->kptksn_flags,
  85                  ENCODE_UPPER_64(tksn->kptksn_suspend_count) |
  86                  ENCODE_LOWER_64(tksn->kptksn_pageins),
  87                  tksn->kptksn_user_time_in_terminated_threads,
  88                  tksn->kptksn_system_time_in_terminated_threads);
  89 #else
  90         BUF_DATA(PERF_TK_SNAP_DATA1_32, UPPER_32(tksn->kptksn_flags),
  91                                         LOWER_32(tksn->kptksn_flags),
  92                                         tksn->kptksn_suspend_count,
  93                                         tksn->kptksn_pageins);
  94         BUF_DATA(PERF_TK_SNAP_DATA2_32, UPPER_32(tksn->kptksn_user_time_in_terminated_threads),
  95                                         LOWER_32(tksn->kptksn_user_time_in_terminated_threads),
  96                                         UPPER_32(tksn->kptksn_system_time_in_terminated_threads),
  97                                         LOWER_32(tksn->kptksn_system_time_in_terminated_threads));
  98 #endif /* defined(__LP64__) */
  99 }
 100
 101 void
 102 kperf_task_info_log(struct kperf_context *ctx)
 103 {
 104         assert(ctx != NULL);
 105
 106         BUF_DATA(PERF_TK_INFO_DATA, ctx->cur_pid);
 107 }