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
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/android/jni_utils.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/containers/flat_map.h"
#include "base/lazy_instance.h"
#include "base/no_destructor.h"
#include "base/synchronization/lock.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "base/base_minimal_jni/JNIUtils_jni.h"
namespace base {
namespace android {
namespace {
struct LockAndMap {
base::Lock lock;
base::flat_map<const char*, ScopedJavaGlobalRef<jobject>> map;
};
LockAndMap* GetLockAndMap() {
static base::NoDestructor<LockAndMap> lock_and_map;
return lock_and_map.get();
}
} // namespace
jobject GetSplitClassLoader(JNIEnv* env, const char* split_name) {
LockAndMap* lock_and_map = GetLockAndMap();
base::AutoLock guard(lock_and_map->lock);
auto it = lock_and_map->map.find(split_name);
if (it != lock_and_map->map.end()) {
return it->second.obj();
}
ScopedJavaGlobalRef<jobject> class_loader(
env, Java_JNIUtils_getSplitClassLoader(env, split_name));
jobject class_loader_obj = class_loader.obj();
lock_and_map->map.insert({split_name, std::move(class_loader)});
return class_loader_obj;
}
} // namespace android
} // namespace base
DEFINE_JNI_FOR_JNIUtils()
|
