1 /*
2 * Copyright (C) 2018 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 #include "jni.h"
18 #include <nativehelper/JNIPlatformHelp.h>
19
20 #include "core_jni_helpers.h"
21 #include <unistd.h>
22
23 #include <bionic/malloc.h>
24
25 namespace android {
26
android_app_ActivityThread_purgePendingResources(JNIEnv * env,jobject clazz)27 static void android_app_ActivityThread_purgePendingResources(JNIEnv* env, jobject clazz) {
28 // Don't care about return values.
29 mallopt(M_PURGE, 0);
30 }
31
android_app_ActivityThread_initZygoteChildHeapProfiling(JNIEnv * env,jobject clazz)32 static void android_app_ActivityThread_initZygoteChildHeapProfiling(JNIEnv* env, jobject clazz) {
33 android_mallopt(M_INIT_ZYGOTE_CHILD_PROFILING, nullptr, 0);
34 }
35
36 static JNINativeMethod gActivityThreadMethods[] = {
37 // ------------ Regular JNI ------------------
38 { "nPurgePendingResources", "()V",
39 (void*) android_app_ActivityThread_purgePendingResources },
40 { "nInitZygoteChildHeapProfiling", "()V",
41 (void*) android_app_ActivityThread_initZygoteChildHeapProfiling }
42 };
43
register_android_app_ActivityThread(JNIEnv * env)44 int register_android_app_ActivityThread(JNIEnv* env) {
45 return RegisterMethodsOrDie(env, "android/app/ActivityThread",
46 gActivityThreadMethods, NELEM(gActivityThreadMethods));
47 }
48
49 };
50