928e054931
This change implements two heuristics. 1. When events are older than 10 seconds, they are dropped. 2. If the application is currently busy processing an event and the user touches a window belonging to a different application then we drop the currently queued events so the other application can start processing the gesture immediately. Note that the system takes care of synthesizing cancelation events automatically for any events that it drops. Added some new handle types to allow the native dispatcher to indirectly refer to the WindowManager's window state and app window token. This was done to enable the dispatcher to identify the application to which each window belongs but it also eliminates some lookup tables and linear searches through the window list on each key press. Bug: 3224911 Change-Id: I9dae8dfe23d195d76865f97011fe2f1d351e2940
122 lines
3.8 KiB
C++
122 lines
3.8 KiB
C++
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "InputApplicationHandle"
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#include "JNIHelp.h"
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#include "jni.h"
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#include <android_runtime/AndroidRuntime.h>
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#include <utils/threads.h>
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#include "com_android_server_InputApplicationHandle.h"
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namespace android {
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static struct {
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jclass clazz;
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jfieldID ptr;
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} gInputApplicationHandleClassInfo;
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static Mutex gHandleMutex;
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// --- NativeInputApplicationHandle ---
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NativeInputApplicationHandle::NativeInputApplicationHandle(jweak objWeak) :
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mObjWeak(objWeak) {
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}
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NativeInputApplicationHandle::~NativeInputApplicationHandle() {
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JNIEnv* env = AndroidRuntime::getJNIEnv();
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env->DeleteWeakGlobalRef(mObjWeak);
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}
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jobject NativeInputApplicationHandle::getInputApplicationHandleObjLocalRef(JNIEnv* env) {
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return env->NewLocalRef(mObjWeak);
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}
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// --- Global functions ---
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sp<InputApplicationHandle> android_server_InputApplicationHandle_getHandle(
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JNIEnv* env, jobject inputApplicationHandleObj) {
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if (!inputApplicationHandleObj) {
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return NULL;
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}
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AutoMutex _l(gHandleMutex);
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int ptr = env->GetIntField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr);
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NativeInputApplicationHandle* handle;
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if (ptr) {
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handle = reinterpret_cast<NativeInputApplicationHandle*>(ptr);
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} else {
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jweak objWeak = env->NewWeakGlobalRef(inputApplicationHandleObj);
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handle = new NativeInputApplicationHandle(objWeak);
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handle->incStrong(inputApplicationHandleObj);
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env->SetIntField(inputApplicationHandleObj, gInputApplicationHandleClassInfo.ptr,
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reinterpret_cast<int>(handle));
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}
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return handle;
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}
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// --- JNI ---
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static void android_server_InputApplicationHandle_nativeDispose(JNIEnv* env, jobject obj) {
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AutoMutex _l(gHandleMutex);
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int ptr = env->GetIntField(obj, gInputApplicationHandleClassInfo.ptr);
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if (ptr) {
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env->SetIntField(obj, gInputApplicationHandleClassInfo.ptr, 0);
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NativeInputApplicationHandle* handle = reinterpret_cast<NativeInputApplicationHandle*>(ptr);
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handle->decStrong(obj);
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}
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}
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static JNINativeMethod gInputApplicationHandleMethods[] = {
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/* name, signature, funcPtr */
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{ "nativeDispose", "()V",
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(void*) android_server_InputApplicationHandle_nativeDispose },
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};
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#define FIND_CLASS(var, className) \
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var = env->FindClass(className); \
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LOG_FATAL_IF(! var, "Unable to find class " className); \
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var = jclass(env->NewGlobalRef(var));
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#define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
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var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
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LOG_FATAL_IF(! var, "Unable to find field " fieldName);
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int register_android_server_InputApplicationHandle(JNIEnv* env) {
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int res = jniRegisterNativeMethods(env, "com/android/server/InputApplicationHandle",
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gInputApplicationHandleMethods, NELEM(gInputApplicationHandleMethods));
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LOG_FATAL_IF(res < 0, "Unable to register native methods.");
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FIND_CLASS(gInputApplicationHandleClassInfo.clazz, "com/android/server/InputApplicationHandle");
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GET_FIELD_ID(gInputApplicationHandleClassInfo.ptr, gInputApplicationHandleClassInfo.clazz,
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"ptr", "I");
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return 0;
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}
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} /* namespace android */
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