You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
114 lines
3.1 KiB
114 lines
3.1 KiB
// Copyright 2020 The Android Open Source Project
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "RefcountPipe.h"
|
|
|
|
#include "base/ArraySize.h"
|
|
#include "refcount-pipe.h"
|
|
|
|
#include <string.h>
|
|
|
|
using android::base::arraySize;
|
|
|
|
namespace android {
|
|
namespace emulation {
|
|
|
|
static OnLastColorBufferRef* sOnLastColorBufferRef = new OnLastColorBufferRef;
|
|
|
|
RefcountPipe::RefcountPipe(void* hwPipe, Service* svc, base::Stream* loadStream)
|
|
: AndroidPipe(hwPipe, svc) {
|
|
if (loadStream) {
|
|
mHandle = loadStream->getBe32();
|
|
} else {
|
|
mHandle = 0;
|
|
}
|
|
}
|
|
|
|
RefcountPipe::~RefcountPipe() {
|
|
OnLastColorBufferRef func = *sOnLastColorBufferRef;
|
|
if (func != nullptr)
|
|
func(mHandle);
|
|
}
|
|
|
|
void RefcountPipe::onGuestClose(PipeCloseReason reason) {
|
|
delete this;
|
|
}
|
|
|
|
unsigned RefcountPipe::onGuestPoll() const {
|
|
// Guest can always write
|
|
return PIPE_POLL_OUT;
|
|
}
|
|
|
|
int RefcountPipe::onGuestRecv(AndroidPipeBuffer* buffers, int numBuffers) {
|
|
// Guest is not supposed to read
|
|
return PIPE_ERROR_IO;
|
|
}
|
|
|
|
int RefcountPipe::onGuestSend(const AndroidPipeBuffer* buffers,
|
|
int numBuffers,
|
|
void** newPipePtr) {
|
|
int result = 0;
|
|
char forRecv[4] = {};
|
|
|
|
while (numBuffers > 0 && arraySize(forRecv) - result >= buffers->size) {
|
|
memcpy(forRecv + result, buffers->data, buffers->size);
|
|
result += static_cast<int>(buffers->size);
|
|
buffers++;
|
|
numBuffers--;
|
|
}
|
|
|
|
if (result == arraySize(forRecv)) {
|
|
memcpy(&mHandle, forRecv, arraySize(forRecv));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void RefcountPipe::onSave(base::Stream* stream) {
|
|
stream->putBe32(mHandle);
|
|
}
|
|
|
|
void registerRefcountPipeService() {
|
|
AndroidPipe::Service::add(std::make_unique<RefcountPipe::Service>());
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
RefcountPipe::Service::Service() : AndroidPipe::Service("refcount") {}
|
|
|
|
AndroidPipe* RefcountPipe::Service::create(void* hwPipe, const char* args) {
|
|
return new RefcountPipe(hwPipe, this);
|
|
}
|
|
|
|
AndroidPipe* RefcountPipe::Service::load(void* hwPipe,
|
|
const char* args,
|
|
android::base::Stream* stream) {
|
|
return new RefcountPipe(hwPipe, this, stream);
|
|
}
|
|
|
|
bool RefcountPipe::Service::canLoad() const {
|
|
return true;
|
|
}
|
|
|
|
void registerOnLastRefCallback(OnLastColorBufferRef func) {
|
|
*sOnLastColorBufferRef = func;
|
|
}
|
|
|
|
} // namespace emulation
|
|
} // namespace android
|
|
|
|
void android_init_refcount_pipe(void) {
|
|
android::emulation::registerRefcountPipeService();
|
|
}
|