1 /*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "Trace"
18 // #define LOG_NDEBUG 0
19
20 #include <inttypes.h>
21
22 #include <cutils/trace.h>
23 #include <utils/String8.h>
24 #include <log/log.h>
25
26 #include <nativehelper/JNIHelp.h>
27 #include <nativehelper/ScopedUtfChars.h>
28 #include <nativehelper/ScopedStringChars.h>
29
30 namespace android {
31
sanitizeString(String8 & utf8Chars)32 static void sanitizeString(String8& utf8Chars) {
33 size_t size = utf8Chars.size();
34 char* str = utf8Chars.lockBuffer(size);
35 for (size_t i = 0; i < size; i++) {
36 char c = str[i];
37 if (c == '\0' || c == '\n' || c == '|') {
38 str[i] = ' ';
39 }
40 }
41 utf8Chars.unlockBuffer();
42 }
43
android_os_Trace_nativeGetEnabledTags(JNIEnv * env,jclass clazz)44 static jlong android_os_Trace_nativeGetEnabledTags(JNIEnv* env, jclass clazz) {
45 return atrace_get_enabled_tags();
46 }
47
android_os_Trace_nativeTraceCounter(JNIEnv * env,jclass clazz,jlong tag,jstring nameStr,jint value)48 static void android_os_Trace_nativeTraceCounter(JNIEnv* env, jclass clazz,
49 jlong tag, jstring nameStr, jint value) {
50 ScopedUtfChars name(env, nameStr);
51
52 ALOGV("%s: %" PRId64 " %s %d", __FUNCTION__, tag, name.c_str(), value);
53 atrace_int(tag, name.c_str(), value);
54 }
55
android_os_Trace_nativeTraceBegin(JNIEnv * env,jclass clazz,jlong tag,jstring nameStr)56 static void android_os_Trace_nativeTraceBegin(JNIEnv* env, jclass clazz,
57 jlong tag, jstring nameStr) {
58 ScopedStringChars jchars(env, nameStr);
59 String8 utf8Chars(reinterpret_cast<const char16_t*>(jchars.get()), jchars.size());
60 sanitizeString(utf8Chars);
61
62 ALOGV("%s: %" PRId64 " %s", __FUNCTION__, tag, utf8Chars.string());
63 atrace_begin(tag, utf8Chars.string());
64 }
65
android_os_Trace_nativeTraceEnd(JNIEnv * env,jclass clazz,jlong tag)66 static void android_os_Trace_nativeTraceEnd(JNIEnv* env, jclass clazz,
67 jlong tag) {
68
69 ALOGV("%s: %" PRId64, __FUNCTION__, tag);
70 atrace_end(tag);
71 }
72
android_os_Trace_nativeAsyncTraceBegin(JNIEnv * env,jclass clazz,jlong tag,jstring nameStr,jint cookie)73 static void android_os_Trace_nativeAsyncTraceBegin(JNIEnv* env, jclass clazz,
74 jlong tag, jstring nameStr, jint cookie) {
75 ScopedStringChars jchars(env, nameStr);
76 String8 utf8Chars(reinterpret_cast<const char16_t*>(jchars.get()), jchars.size());
77 sanitizeString(utf8Chars);
78
79 ALOGV("%s: %" PRId64 " %s %d", __FUNCTION__, tag, utf8Chars.string(), cookie);
80 atrace_async_begin(tag, utf8Chars.string(), cookie);
81 }
82
android_os_Trace_nativeAsyncTraceEnd(JNIEnv * env,jclass clazz,jlong tag,jstring nameStr,jint cookie)83 static void android_os_Trace_nativeAsyncTraceEnd(JNIEnv* env, jclass clazz,
84 jlong tag, jstring nameStr, jint cookie) {
85 ScopedStringChars jchars(env, nameStr);
86 String8 utf8Chars(reinterpret_cast<const char16_t*>(jchars.get()), jchars.size());
87 sanitizeString(utf8Chars);
88
89 ALOGV("%s: %" PRId64 " %s %d", __FUNCTION__, tag, utf8Chars.string(), cookie);
90 atrace_async_end(tag, utf8Chars.string(), cookie);
91 }
92
android_os_Trace_nativeSetAppTracingAllowed(JNIEnv * env,jclass clazz,jboolean allowed)93 static void android_os_Trace_nativeSetAppTracingAllowed(JNIEnv* env,
94 jclass clazz, jboolean allowed) {
95 ALOGV("%s: %d", __FUNCTION__, allowed);
96
97 atrace_set_debuggable(allowed);
98 }
99
android_os_Trace_nativeSetTracingEnabled(JNIEnv * env,jclass clazz,jboolean enabled)100 static void android_os_Trace_nativeSetTracingEnabled(JNIEnv* env,
101 jclass clazz, jboolean enabled) {
102 ALOGV("%s: %d", __FUNCTION__, enabled);
103
104 atrace_set_tracing_enabled(enabled);
105 }
106
107 static const JNINativeMethod gTraceMethods[] = {
108 /* name, signature, funcPtr */
109 { "nativeGetEnabledTags",
110 "()J",
111 (void*)android_os_Trace_nativeGetEnabledTags },
112 { "nativeSetAppTracingAllowed",
113 "(Z)V",
114 (void*)android_os_Trace_nativeSetAppTracingAllowed },
115 { "nativeSetTracingEnabled",
116 "(Z)V",
117 (void*)android_os_Trace_nativeSetTracingEnabled },
118
119 // ----------- @FastNative ----------------
120
121 { "nativeTraceCounter",
122 "(JLjava/lang/String;I)V",
123 (void*)android_os_Trace_nativeTraceCounter },
124 { "nativeTraceBegin",
125 "(JLjava/lang/String;)V",
126 (void*)android_os_Trace_nativeTraceBegin },
127 { "nativeTraceEnd",
128 "(J)V",
129 (void*)android_os_Trace_nativeTraceEnd },
130 { "nativeAsyncTraceBegin",
131 "(JLjava/lang/String;I)V",
132 (void*)android_os_Trace_nativeAsyncTraceBegin },
133 { "nativeAsyncTraceEnd",
134 "(JLjava/lang/String;I)V",
135 (void*)android_os_Trace_nativeAsyncTraceEnd },
136 };
137
register_android_os_Trace(JNIEnv * env)138 int register_android_os_Trace(JNIEnv* env) {
139 int res = jniRegisterNativeMethods(env, "android/os/Trace",
140 gTraceMethods, NELEM(gTraceMethods));
141 LOG_ALWAYS_FATAL_IF(res < 0, "Unable to register native methods.");
142
143 return 0;
144 }
145
146 } // namespace android
147