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
|
/*
* 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 "java_lang_Runtime.h"
#include <dlfcn.h>
#include <limits.h>
#include <unistd.h>
#include "base/macros.h"
#include "gc/heap.h"
#include "handle_scope-inl.h"
#include "jni_internal.h"
#include "mirror/class_loader.h"
#include "runtime.h"
#include "scoped_thread_state_change.h"
#include "ScopedUtfChars.h"
#include "verify_object-inl.h"
#include <sstream>
#ifdef HAVE_ANDROID_OS
// This function is provided by android linker.
extern "C" void android_update_LD_LIBRARY_PATH(const char* ld_library_path);
#endif // HAVE_ANDROID_OS
namespace art {
static void Runtime_gc(JNIEnv*, jclass) {
if (Runtime::Current()->IsExplicitGcDisabled()) {
LOG(INFO) << "Explicit GC skipped.";
return;
}
Runtime::Current()->GetHeap()->CollectGarbage(false);
}
NO_RETURN static void Runtime_nativeExit(JNIEnv*, jclass, jint status) {
LOG(INFO) << "System.exit called, status: " << status;
Runtime::Current()->CallExitHook(status);
exit(status);
}
static void SetLdLibraryPath(JNIEnv* env, jstring javaLdLibraryPathJstr) {
#ifdef HAVE_ANDROID_OS
if (javaLdLibraryPathJstr != nullptr) {
ScopedUtfChars ldLibraryPath(env, javaLdLibraryPathJstr);
if (ldLibraryPath.c_str() != nullptr) {
android_update_LD_LIBRARY_PATH(ldLibraryPath.c_str());
}
}
#else
LOG(WARNING) << "android_update_LD_LIBRARY_PATH not found; .so dependencies will not work!";
UNUSED(javaLdLibraryPathJstr, env);
#endif
}
static jstring Runtime_nativeLoad(JNIEnv* env, jclass, jstring javaFilename, jobject javaLoader,
jstring javaLdLibraryPathJstr) {
ScopedUtfChars filename(env, javaFilename);
if (filename.c_str() == nullptr) {
return nullptr;
}
SetLdLibraryPath(env, javaLdLibraryPathJstr);
std::string error_msg;
{
JavaVMExt* vm = Runtime::Current()->GetJavaVM();
bool success = vm->LoadNativeLibrary(env, filename.c_str(), javaLoader, &error_msg);
if (success) {
return nullptr;
}
}
// Don't let a pending exception from JNI_OnLoad cause a CheckJNI issue with NewStringUTF.
env->ExceptionClear();
return env->NewStringUTF(error_msg.c_str());
}
static jlong Runtime_maxMemory(JNIEnv*, jclass) {
return Runtime::Current()->GetHeap()->GetMaxMemory();
}
static jlong Runtime_totalMemory(JNIEnv*, jclass) {
return Runtime::Current()->GetHeap()->GetTotalMemory();
}
static jlong Runtime_freeMemory(JNIEnv*, jclass) {
return Runtime::Current()->GetHeap()->GetFreeMemory();
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Runtime, freeMemory, "!()J"),
NATIVE_METHOD(Runtime, gc, "()V"),
NATIVE_METHOD(Runtime, maxMemory, "!()J"),
NATIVE_METHOD(Runtime, nativeExit, "(I)V"),
NATIVE_METHOD(Runtime, nativeLoad, "(Ljava/lang/String;Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/String;"),
NATIVE_METHOD(Runtime, totalMemory, "!()J"),
};
void register_java_lang_Runtime(JNIEnv* env) {
REGISTER_NATIVE_METHODS("java/lang/Runtime");
}
} // namespace art
|
