1/*
2 * Copyright 2016 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "src/core/SkATrace.h"
9
10#include "src/core/SkTraceEvent.h"
11
12#include "src/core/SkTraceEventCommon.h"
13
14#ifdef SK_BUILD_FOR_ANDROID
15#include <dlfcn.h>
16#endif
17
18SkATrace::SkATrace() : fBeginSection(nullptr), fEndSection(nullptr), fIsEnabled(nullptr) {
19#if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
20 fIsEnabled = []{ return static_cast<bool>(CC_UNLIKELY(ATRACE_ENABLED())); };
21 fBeginSection = [](const char* name){ ATRACE_BEGIN(name); };
22 fEndSection = []{ ATRACE_END(); };
23#elif defined(SK_BUILD_FOR_ANDROID)
24 if (void* lib = dlopen("libandroid.so", RTLD_NOW | RTLD_LOCAL)) {
25 fBeginSection = (decltype(fBeginSection))dlsym(lib, "ATrace_beginSection");
26 fEndSection = (decltype(fEndSection))dlsym(lib, "ATrace_endSection");
27 fIsEnabled = (decltype(fIsEnabled))dlsym(lib, "ATrace_isEnabled");
28 }
29#endif
30
31 if (!fIsEnabled) {
32 fIsEnabled = []{ return false; };
33 }
34}
35
36SkEventTracer::Handle SkATrace::addTraceEvent(char phase,
37 const uint8_t* categoryEnabledFlag,
38 const char* name,
39 uint64_t id,
40 int numArgs,
41 const char** argNames,
42 const uint8_t* argTypes,
43 const uint64_t* argValues,
44 uint8_t flags) {
45 if (fIsEnabled()) {
46 if (TRACE_EVENT_PHASE_COMPLETE == phase ||
47 TRACE_EVENT_PHASE_INSTANT == phase) {
48 fBeginSection(name);
49 }
50
51 if (TRACE_EVENT_PHASE_INSTANT == phase) {
52 fEndSection();
53 }
54 }
55 return 0;
56}
57
58void SkATrace::updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
59 const char* name,
60 SkEventTracer::Handle handle) {
61 // This is only ever called from a scoped trace event so we will just end the ATrace section.
62 if (fIsEnabled()) {
63 fEndSection();
64 }
65}
66
67const uint8_t* SkATrace::getCategoryGroupEnabled(const char* name) {
68 // Chrome tracing is setup to not repeatly call this function once it has been initialized. So
69 // we can't use this to do a check for ATrace isEnabled(). Thus we will always return yes here
70 // and then check to see if ATrace is enabled when beginning and ending a section.
71 static uint8_t yes = SkEventTracer::kEnabledForRecording_CategoryGroupEnabledFlags;
72 return &yes;
73}
74
75
76#ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
77
78bool SkAndroidFrameworkTraceUtil::gEnableAndroidTracing = false;
79
80#endif //SK_BUILD_FOR_ANDROID_FRAMEWORK
81
82
83
84