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