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
|
/*
* Copyright (C) 2008 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.
*/
#include <unistd.h>
#include <limits.h>
#include "heap.h"
#include "jni_internal.h"
#include "object.h"
#include "runtime.h"
#include "JniConstants.h" // Last to avoid problems with LOG redefinition.
#include "ScopedUtfChars.h"
namespace art {
namespace {
void Runtime_gc(JNIEnv*, jclass) {
ScopedThreadStateChange tsc(Thread::Current(), Thread::kRunnable);
Heap::CollectGarbage(false);
}
void Runtime_nativeExit(JNIEnv* env, jclass, jint status, jboolean isExit) {
// isExit is true for System.exit and false for System.halt.
if (isExit) {
Runtime::Current()->CallExitHook(status);
}
exit(status);
}
/*
* static String nativeLoad(String filename, ClassLoader loader)
*
* Load the specified full path as a dynamic library filled with
* JNI-compatible methods. Returns null on success, or a failure
* message on failure.
*/
jstring Runtime_nativeLoad(JNIEnv* env, jclass, jstring javaFilename, jobject javaLoader) {
ScopedUtfChars filename(env, javaFilename);
if (filename.c_str() == NULL) {
return NULL;
}
ClassLoader* classLoader = Decode<ClassLoader*>(env, javaLoader);
std::string detail;
JavaVMExt* vm = Runtime::Current()->GetJavaVM();
bool success = vm->LoadNativeLibrary(filename.c_str(), classLoader, detail);
if (success) {
return NULL;
}
return env->NewStringUTF(detail.c_str());
}
jlong Runtime_maxMemory(JNIEnv* env, jclass) {
return Heap::GetMaxMemory();
}
jlong Runtime_totalMemory(JNIEnv* env, jclass) {
return Heap::GetTotalMemory();
}
jlong Runtime_freeMemory(JNIEnv* env, jclass) {
return Heap::GetFreeMemory();
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Runtime, freeMemory, "()J"),
NATIVE_METHOD(Runtime, gc, "()V"),
NATIVE_METHOD(Runtime, maxMemory, "()J"),
NATIVE_METHOD(Runtime, nativeExit, "(IZ)V"),
NATIVE_METHOD(Runtime, nativeLoad, "(Ljava/lang/String;Ljava/lang/ClassLoader;)Ljava/lang/String;"),
NATIVE_METHOD(Runtime, totalMemory, "()J"),
};
} // namespace
void register_java_lang_Runtime(JNIEnv* env) {
jniRegisterNativeMethods(env, "java/lang/Runtime", gMethods, NELEM(gMethods));
}
} // namespace art
|
