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 "include/utils/SkTraceEventPhase.h"
11
12 #ifdef SK_BUILD_FOR_ANDROID
13 #include <dlfcn.h>
14 #endif
15
16 #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
17 #include <cutils/trace.h>
18 #include "src/core/SkTraceEventCommon.h" // for SkAndroidFrameworkTraceUtil
19 #endif
20
SkATrace()21 SkATrace::SkATrace() : fBeginSection(nullptr), fEndSection(nullptr), fIsEnabled(nullptr) {
22 #if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
23 fIsEnabled = []{ return static_cast<bool>(CC_UNLIKELY(ATRACE_ENABLED())); };
24 fBeginSection = [](const char* name){ ATRACE_BEGIN(name); };
25 fEndSection = []{ ATRACE_END(); };
26 #elif defined(SK_BUILD_FOR_ANDROID)
27 if (void* lib = dlopen("libandroid.so", RTLD_NOW | RTLD_LOCAL)) {
28 fBeginSection = (decltype(fBeginSection))dlsym(lib, "ATrace_beginSection");
29 fEndSection = (decltype(fEndSection))dlsym(lib, "ATrace_endSection");
30 fIsEnabled = (decltype(fIsEnabled))dlsym(lib, "ATrace_isEnabled");
31 }
32 #endif
33
34 if (!fIsEnabled) {
35 fIsEnabled = []{ return false; };
36 }
37 }
38
addTraceEvent(char phase,const uint8_t * categoryEnabledFlag,const char * name,uint64_t id,int numArgs,const char ** argNames,const uint8_t * argTypes,const uint64_t * argValues,uint8_t flags)39 SkEventTracer::Handle SkATrace::addTraceEvent(char phase,
40 const uint8_t* categoryEnabledFlag,
41 const char* name,
42 uint64_t id,
43 int numArgs,
44 const char** argNames,
45 const uint8_t* argTypes,
46 const uint64_t* argValues,
47 uint8_t flags) {
48 if (fIsEnabled()) {
49 if (TRACE_EVENT_PHASE_COMPLETE == phase ||
50 TRACE_EVENT_PHASE_INSTANT == phase) {
51 fBeginSection(name);
52 }
53
54 if (TRACE_EVENT_PHASE_INSTANT == phase) {
55 fEndSection();
56 }
57 }
58 return 0;
59 }
60
updateTraceEventDuration(const uint8_t * categoryEnabledFlag,const char * name,SkEventTracer::Handle handle)61 void SkATrace::updateTraceEventDuration(const uint8_t* categoryEnabledFlag,
62 const char* name,
63 SkEventTracer::Handle handle) {
64 // This is only ever called from a scoped trace event so we will just end the ATrace section.
65 if (fIsEnabled()) {
66 fEndSection();
67 }
68 }
69
getCategoryGroupEnabled(const char * name)70 const uint8_t* SkATrace::getCategoryGroupEnabled(const char* name) {
71 // Chrome tracing is setup to not repeatly call this function once it has been initialized. So
72 // we can't use this to do a check for ATrace isEnabled(). Thus we will always return yes here
73 // and then check to see if ATrace is enabled when beginning and ending a section.
74 static uint8_t yes = SkEventTracer::kEnabledForRecording_CategoryGroupEnabledFlags;
75 return &yes;
76 }
77
78
79 #ifdef SK_BUILD_FOR_ANDROID_FRAMEWORK
80
81 bool SkAndroidFrameworkTraceUtil::gEnableAndroidTracing = false;
82 bool SkAndroidFrameworkTraceUtil::gUsePerfettoTrackEvents = false;
83
84 #endif //SK_BUILD_FOR_ANDROID_FRAMEWORK
85
86
87
88