80 lines
3.2 KiB
C++
80 lines
3.2 KiB
C++
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/*
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* Copyright (c) 2011, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "PostBufLock.h"
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#include <surfaceflinger/ISurfaceComposer.h>
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#include "LayerBuffer.h"
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namespace android {
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class LayerBase;
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class LayerBuffer;
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PostBufferSingleton* PostBufferSingleton::mInstance=0;
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void PostBufLockPolicy::wait(Mutex & m, Condition& c, postBufState_t& s)
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{
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const nsecs_t TIMEOUT = ms2ns(20);
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Mutex::Autolock _l(m);
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unsigned int count = 0;
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enum { MAX_WAIT_COUNT = 50 };
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/* That is the heart of postBuffer block call.
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* we set wakeup to 3 sec. That should never deadblock
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* since we always have *any* UI update that can release it */
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while(s == PostBufPolicyBase::POSTBUF_BLOCK) {
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(void) c.waitRelative(m, TIMEOUT);
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if(++count > MAX_WAIT_COUNT){
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LOGE("BufferSource::setBuffer too many wait count=%d", count);
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s = PostBufPolicyBase::POSTBUF_GO;
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}
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}
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// Mark it as block so no other setBuffer can sneak in
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s = PostBufPolicyBase::POSTBUF_BLOCK;
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}
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bool isPushBuffer(LayerBase* l) {
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return (l->getLayerInitFlags() & android::ISurfaceComposer::ePushBuffers);
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}
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void PostBufferSingleton::addPushBufferLayers(const Vector< sp<LayerBase> >& l) {
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for(size_t i=0 ; i<l.size() ; ++i) {
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if(isPushBuffer(l[i].get())){
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mPushBufList.add(l[i]);
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// safe since it is push buffer
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static_cast<LayerBuffer*>(l[i].get())->setDirtyQueueSignal();
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}
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}
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}
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void PostBufferSingleton::onQueueBuf() {
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for(size_t i=0 ; i<mPushBufList.size() ; ++i) {
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static_cast<LayerBuffer*>(mPushBufList[i].get())->onQueueBuf();
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}
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}
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}
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