| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkATrace.h" |
| |
| #include "SkTraceEvent.h" |
| |
| #ifdef SK_BUILD_FOR_ANDROID |
| #include <dlfcn.h> |
| #endif |
| |
| SkATrace::SkATrace() : fBeginSection(nullptr), fEndSection(nullptr), fIsEnabled(nullptr) { |
| #ifdef SK_BUILD_FOR_ANDROID |
| if (void* lib = dlopen("libandroid.so", RTLD_NOW | RTLD_LOCAL)) { |
| fBeginSection = (decltype(fBeginSection))dlsym(lib, "ATrace_beginSection"); |
| fEndSection = (decltype(fEndSection))dlsym(lib, "ATrace_endSection"); |
| fIsEnabled = (decltype(fIsEnabled))dlsym(lib, "ATrace_isEnabled"); |
| } |
| #endif |
| if (!fIsEnabled) { |
| fIsEnabled = []{ return false; }; |
| } |
| } |
| |
| SkEventTracer::Handle SkATrace::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) { |
| if (fIsEnabled()) { |
| if (TRACE_EVENT_PHASE_COMPLETE == phase || |
| TRACE_EVENT_PHASE_BEGIN == phase || |
| TRACE_EVENT_PHASE_INSTANT == phase) { |
| fBeginSection(name); |
| } |
| |
| if (TRACE_EVENT_PHASE_END == phase || |
| TRACE_EVENT_PHASE_INSTANT == phase) { |
| fEndSection(); |
| } |
| } |
| return 0; |
| } |
| |
| void SkATrace::updateTraceEventDuration(const uint8_t* categoryEnabledFlag, |
| const char* name, |
| SkEventTracer::Handle handle) { |
| // This is only ever called from a scoped trace event so we will just end the ATrace section. |
| if (fIsEnabled()) { |
| fEndSection(); |
| } |
| } |
| |
| const uint8_t* SkATrace::getCategoryGroupEnabled(const char* name) { |
| // Chrome tracing is setup to not repeatly call this function once it has been initialized. So |
| // we can't use this to do a check for ATrace isEnabled(). Thus we will always return yes here |
| // and then check to see if ATrace is enabled when beginning and ending a section. |
| static uint8_t yes = SkEventTracer::kEnabledForRecording_CategoryGroupEnabledFlags; |
| return &yes; |
| } |
| |