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/lazy_instance.h"
13 #include "jni/TraceEvent_jni.h"
20 const char kJavaCategory[] = "Java";
22 // Boilerplate for safely converting Java data to TRACE_EVENT data.
23 class TraceEventDataConverter {
25 TraceEventDataConverter(JNIEnv* env,
31 name_(env->GetStringUTFChars(jname, NULL)),
32 arg_(jarg ? env->GetStringUTFChars(jarg, NULL) : NULL) {
34 ~TraceEventDataConverter() {
35 env_->ReleaseStringUTFChars(jname_, name_);
37 env_->ReleaseStringUTFChars(jarg_, arg_);
40 // Return saves values to pass to TRACE_EVENT macros.
41 const char* name() { return name_; }
42 const char* arg_name() { return arg_ ? "arg" : NULL; }
43 const char* arg() { return arg_; }
52 DISALLOW_COPY_AND_ASSIGN(TraceEventDataConverter);
57 static jboolean TraceEnabled(JNIEnv* env, jclass clazz) {
58 return base::debug::TraceLog::GetInstance()->IsEnabled();
61 static void StartATrace(JNIEnv* env, jclass clazz) {
62 base::debug::TraceLog::GetInstance()->StartATrace();
65 static void StopATrace(JNIEnv* env, jclass clazz) {
66 base::debug::TraceLog::GetInstance()->StopATrace();
69 static void Instant(JNIEnv* env, jclass clazz,
70 jstring jname, jstring jarg) {
71 TraceEventDataConverter converter(env, jname, jarg);
72 if (converter.arg()) {
73 TRACE_EVENT_COPY_INSTANT1(kJavaCategory, converter.name(),
74 TRACE_EVENT_SCOPE_THREAD,
75 converter.arg_name(), converter.arg());
77 TRACE_EVENT_COPY_INSTANT0(kJavaCategory, converter.name(),
78 TRACE_EVENT_SCOPE_THREAD);
82 static void Begin(JNIEnv* env, jclass clazz,
83 jstring jname, jstring jarg) {
84 TraceEventDataConverter converter(env, jname, jarg);
85 if (converter.arg()) {
86 TRACE_EVENT_COPY_BEGIN1(kJavaCategory, converter.name(),
87 converter.arg_name(), converter.arg());
89 TRACE_EVENT_COPY_BEGIN0(kJavaCategory, converter.name());
93 static void End(JNIEnv* env, jclass clazz,
94 jstring jname, jstring jarg) {
95 TraceEventDataConverter converter(env, jname, jarg);
96 if (converter.arg()) {
97 TRACE_EVENT_COPY_END1(kJavaCategory, converter.name(),
98 converter.arg_name(), converter.arg());
100 TRACE_EVENT_COPY_END0(kJavaCategory, converter.name());
104 static void StartAsync(JNIEnv* env, jclass clazz,
105 jstring jname, jlong jid, jstring jarg) {
106 TraceEventDataConverter converter(env, jname, jarg);
107 if (converter.arg()) {
108 TRACE_EVENT_COPY_ASYNC_BEGIN1(kJavaCategory,
111 converter.arg_name(),
114 TRACE_EVENT_COPY_ASYNC_BEGIN0(kJavaCategory,
120 static void FinishAsync(JNIEnv* env, jclass clazz,
121 jstring jname, jlong jid, jstring jarg) {
122 TraceEventDataConverter converter(env, jname, jarg);
123 if (converter.arg()) {
124 TRACE_EVENT_COPY_ASYNC_END1(kJavaCategory,
127 converter.arg_name(),
130 TRACE_EVENT_COPY_ASYNC_END0(kJavaCategory,
136 bool RegisterTraceEvent(JNIEnv* env) {
137 return RegisterNativesImpl(env);
140 } // namespace android