1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "base/android/trace_event_binding.h"
11 #include "base/debug/trace_event.h"
12 #include "base/debug/trace_event_impl.h"
13 #include "base/lazy_instance.h"
14 #include "jni/TraceEvent_jni.h"
21 const char kJavaCategory[] = "Java";
22 const char kToplevelCategory[] = "toplevel";
23 const char kLooperDispatchMessage[] = "Looper.dispatchMessage";
25 // Boilerplate for safely converting Java data to TRACE_EVENT data.
26 class TraceEventDataConverter {
28 TraceEventDataConverter(JNIEnv* env,
34 name_(env->GetStringUTFChars(jname, NULL)),
35 arg_(jarg ? env->GetStringUTFChars(jarg, NULL) : NULL) {
37 ~TraceEventDataConverter() {
38 env_->ReleaseStringUTFChars(jname_, name_);
40 env_->ReleaseStringUTFChars(jarg_, arg_);
43 // Return saves values to pass to TRACE_EVENT macros.
44 const char* name() { return name_; }
45 const char* arg_name() { return arg_ ? "arg" : NULL; }
46 const char* arg() { return arg_; }
55 DISALLOW_COPY_AND_ASSIGN(TraceEventDataConverter);
58 class TraceEnabledObserver : public debug::TraceLog::EnabledStateObserver {
60 virtual void OnTraceLogEnabled() OVERRIDE {
61 JNIEnv* env = base::android::AttachCurrentThread();
62 base::android::Java_TraceEvent_setEnabled(env, true);
64 virtual void OnTraceLogDisabled() OVERRIDE {
65 JNIEnv* env = base::android::AttachCurrentThread();
66 base::android::Java_TraceEvent_setEnabled(env, false);
70 base::LazyInstance<TraceEnabledObserver>::Leaky g_trace_enabled_state_observer_;
74 static void RegisterEnabledObserver(JNIEnv* env, jclass clazz) {
75 bool enabled = debug::TraceLog::GetInstance()->IsEnabled();
76 base::android::Java_TraceEvent_setEnabled(env, enabled);
77 debug::TraceLog::GetInstance()->AddEnabledStateObserver(
78 g_trace_enabled_state_observer_.Pointer());
81 static void StartATrace(JNIEnv* env, jclass clazz) {
82 base::debug::TraceLog::GetInstance()->StartATrace();
85 static void StopATrace(JNIEnv* env, jclass clazz) {
86 base::debug::TraceLog::GetInstance()->StopATrace();
89 static void Instant(JNIEnv* env, jclass clazz,
90 jstring jname, jstring jarg) {
91 TraceEventDataConverter converter(env, jname, jarg);
92 if (converter.arg()) {
93 TRACE_EVENT_COPY_INSTANT1(kJavaCategory, converter.name(),
94 TRACE_EVENT_SCOPE_THREAD,
95 converter.arg_name(), converter.arg());
97 TRACE_EVENT_COPY_INSTANT0(kJavaCategory, converter.name(),
98 TRACE_EVENT_SCOPE_THREAD);
102 static void Begin(JNIEnv* env, jclass clazz,
103 jstring jname, jstring jarg) {
104 TraceEventDataConverter converter(env, jname, jarg);
105 if (converter.arg()) {
106 TRACE_EVENT_COPY_BEGIN1(kJavaCategory, converter.name(),
107 converter.arg_name(), converter.arg());
109 TRACE_EVENT_COPY_BEGIN0(kJavaCategory, converter.name());
113 static void End(JNIEnv* env, jclass clazz,
114 jstring jname, jstring jarg) {
115 TraceEventDataConverter converter(env, jname, jarg);
116 if (converter.arg()) {
117 TRACE_EVENT_COPY_END1(kJavaCategory, converter.name(),
118 converter.arg_name(), converter.arg());
120 TRACE_EVENT_COPY_END0(kJavaCategory, converter.name());
124 static void BeginToplevel(JNIEnv* env, jclass clazz) {
125 TRACE_EVENT_BEGIN0(kToplevelCategory, kLooperDispatchMessage);
128 static void EndToplevel(JNIEnv* env, jclass clazz) {
129 TRACE_EVENT_END0(kToplevelCategory, kLooperDispatchMessage);
132 static void StartAsync(JNIEnv* env, jclass clazz,
133 jstring jname, jlong jid, jstring jarg) {
134 TraceEventDataConverter converter(env, jname, jarg);
135 if (converter.arg()) {
136 TRACE_EVENT_COPY_ASYNC_BEGIN1(kJavaCategory,
139 converter.arg_name(),
142 TRACE_EVENT_COPY_ASYNC_BEGIN0(kJavaCategory,
148 static void FinishAsync(JNIEnv* env, jclass clazz,
149 jstring jname, jlong jid, jstring jarg) {
150 TraceEventDataConverter converter(env, jname, jarg);
151 if (converter.arg()) {
152 TRACE_EVENT_COPY_ASYNC_END1(kJavaCategory,
155 converter.arg_name(),
158 TRACE_EVENT_COPY_ASYNC_END0(kJavaCategory,
164 bool RegisterTraceEvent(JNIEnv* env) {
165 return RegisterNativesImpl(env);
168 } // namespace android