message_pump_android.cc revision f2477e01787aa58f445919b809d89e252beef54f
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 57d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles)#include "base/message_loop/message_pump_android.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <jni.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/android/jni_android.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/android/scoped_java_ref.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/lazy_instance.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/run_loop.h" 14eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/time/time.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "jni/SystemMessageHandler_jni.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using base::android::ScopedJavaLocalRef; 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Native JNI methods called by Java. 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ---------------------------------------------------------------------------- 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This method can not move to anonymous namespace as it has been declared as 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 'static' in system_message_handler_jni.h. 24f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)static void DoRunLoopOnce(JNIEnv* env, jobject obj, jlong native_delegate) { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::MessagePump::Delegate* delegate = 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<base::MessagePump::Delegate*>(native_delegate); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(delegate); 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is based on MessagePumpForUI::DoRunLoop() from desktop. 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note however that our system queue is handled in the java side. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // In desktop we inspect and process a single system message and then 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // we call DoWork() / DoDelayedWork(). 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On Android, the java message queue may contain messages for other handlers 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // that will be processed before calling here again. 347dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch bool did_work = delegate->DoWork(); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is the time when we need to do delayed work. 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeTicks delayed_work_time; 387dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch did_work |= delegate->DoDelayedWork(&delayed_work_time); 397dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 407dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Always call this if there is a delayed message waiting in the queue 417dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // since is at most one delayed message in the Java message handler, and this 427dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // function call may be the result of that message being handled. 437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (!delayed_work_time.is_null()) { 447dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch Java_SystemMessageHandler_setDelayedTimer(env, obj, 457dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch (delayed_work_time - base::TimeTicks::Now()).InMillisecondsRoundedUp()); 467dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is a major difference between android and other platforms: since we 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // can't inspect it and process just one single message, instead we'll yeld 507dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // the callstack. 517dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (did_work) 527dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch return; 537dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 547dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch delegate->DoIdleWork(); 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)MessagePumpForUI::MessagePumpForUI() 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : run_loop_(NULL) { 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)MessagePumpForUI::~MessagePumpForUI() { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void MessagePumpForUI::Run(Delegate* delegate) { 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "UnitTests should rely on MessagePumpForUIStub in" 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " test_stub_android.h"; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void MessagePumpForUI::Start(Delegate* delegate) { 727d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) run_loop_ = new RunLoop(); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Since the RunLoop was just created above, BeforeRun should be guaranteed to 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // return true (it only returns false if the RunLoop has been Quit already). 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!run_loop_->BeforeRun()) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 78eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch DCHECK(system_message_handler_obj_.is_null()); 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) JNIEnv* env = base::android::AttachCurrentThread(); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(env); 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 83eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch system_message_handler_obj_.Reset( 84f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) Java_SystemMessageHandler_create( 85f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) env, reinterpret_cast<intptr_t>(delegate))); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void MessagePumpForUI::Quit() { 89eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch if (!system_message_handler_obj_.is_null()) { 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) JNIEnv* env = base::android::AttachCurrentThread(); 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(env); 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Java_SystemMessageHandler_removeTimer(env, 94eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch system_message_handler_obj_.obj()); 95eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch system_message_handler_obj_.Reset(); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (run_loop_) { 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) run_loop_->AfterRun(); 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete run_loop_; 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) run_loop_ = NULL; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void MessagePumpForUI::ScheduleWork() { 106eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch DCHECK(!system_message_handler_obj_.is_null()); 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) JNIEnv* env = base::android::AttachCurrentThread(); 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(env); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Java_SystemMessageHandler_setTimer(env, 112eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch system_message_handler_obj_.obj()); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void MessagePumpForUI::ScheduleDelayedWork(const TimeTicks& delayed_work_time) { 116eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch DCHECK(!system_message_handler_obj_.is_null()); 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) JNIEnv* env = base::android::AttachCurrentThread(); 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(env); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) jlong millis = 1227d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) (delayed_work_time - TimeTicks::Now()).InMillisecondsRoundedUp(); 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that we're truncating to milliseconds as required by the java side, 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // even though delayed_work_time is microseconds resolution. 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Java_SystemMessageHandler_setDelayedTimer(env, 126eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch system_message_handler_obj_.obj(), millis); 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool MessagePumpForUI::RegisterBindings(JNIEnv* env) { 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return RegisterNativesImpl(env); 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace base 135