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 "SkATrace.h" 9 10 #include "SkTraceEvent.h" 11 12 #include "SkTraceEventCommon.h" 13 14 #ifdef SK_BUILD_FOR_ANDROID 15 #include <dlfcn.h> 16 #endif 17 18 SkATrace::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 36 SkEventTracer::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 58 void 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 67 const 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 78 bool SkAndroidFrameworkTraceUtil::gEnableAndroidTracing = false; 79 80 #endif //SK_BUILD_FOR_ANDROID_FRAMEWORK 81 82 83 84
