1// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
2// for details. All rights reserved. Use of this source code is governed by a
3// BSD-style license that can be found in the LICENSE file.
4
5#include "vm/globals.h"
6#if defined(HOST_OS_MACOS) && defined(SUPPORT_TIMELINE)
7
8
9#include "vm/log.h"
10#include "vm/timeline.h"
11
12namespace dart {
13
14// Only available on iOS 12.0, macOS 10.14 or above
15TimelineEventMacosRecorder::TimelineEventMacosRecorder()
16 : TimelineEventPlatformRecorder() {}
17
18TimelineEventMacosRecorder::~TimelineEventMacosRecorder() {}
19
20void TimelineEventMacosRecorder::OnEvent(TimelineEvent* event) {
21 if (event == NULL) {
22 return;
23 }
24
25#if defined(HOST_OS_SUPPORTS_SIGNPOST)
26 os_log_t log = event->stream_->macos_log();
27 if (!os_signpost_enabled(log)) {
28 return;
29 }
30
31 const char* label = event->label();
32 uint8_t _Alignas(16) buffer[64];
33 buffer[0] = 0;
34
35 switch (event->event_type()) {
36 case TimelineEvent::kInstant: {
37 _os_signpost_emit_with_name_impl(&__dso_handle, log, OS_SIGNPOST_EVENT,
38 OS_SIGNPOST_ID_EXCLUSIVE, label, "",
39 buffer, sizeof(buffer));
40 break;
41 }
42 case TimelineEvent::kBegin: {
43 _os_signpost_emit_with_name_impl(
44 &__dso_handle, log, OS_SIGNPOST_INTERVAL_BEGIN,
45 OS_SIGNPOST_ID_EXCLUSIVE, label, "", buffer, sizeof(buffer));
46 break;
47 }
48 case TimelineEvent::kEnd: {
49 _os_signpost_emit_with_name_impl(
50 &__dso_handle, log, OS_SIGNPOST_INTERVAL_END,
51 OS_SIGNPOST_ID_EXCLUSIVE, label, "", buffer, sizeof(buffer));
52 break;
53 }
54 case TimelineEvent::kAsyncBegin: {
55 _os_signpost_emit_with_name_impl(
56 &__dso_handle, log, OS_SIGNPOST_INTERVAL_BEGIN, event->AsyncId(),
57 label, "", buffer, sizeof(buffer));
58 break;
59 }
60 case TimelineEvent::kAsyncEnd: {
61 _os_signpost_emit_with_name_impl(
62 &__dso_handle, log, OS_SIGNPOST_INTERVAL_END, event->AsyncId(), label,
63 "", buffer, sizeof(buffer));
64 break;
65 }
66 case TimelineEvent::kCounter: {
67 const char* fmt = "%s";
68 Utils::SNPrint(reinterpret_cast<char*>(buffer), sizeof(buffer), fmt,
69 event->arguments()[0].value);
70 _os_signpost_emit_with_name_impl(&__dso_handle, log, OS_SIGNPOST_EVENT,
71 event->AsyncId(), label, fmt, buffer,
72 sizeof(buffer));
73 break;
74 }
75 default:
76 break;
77 }
78#endif // defined(HOST_OS_SUPPORTS_SIGNPOST)
79}
80
81} // namespace dart
82
83#endif // defined(HOST_OS_MACOS) && defined(SUPPORT_TIMELINE)
84