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
SkATrace()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
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)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
updateTraceEventDuration(const uint8_t * categoryEnabledFlag,const char * name,SkEventTracer::Handle handle)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
getCategoryGroupEnabled(const char * name)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