blob: d2886b2224e5c11762bf918aca562f354df1cd90 [file] [log] [blame]
/*
* Copyright (C) 2011 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.
*/
#ifndef __ADDRESS_SPACE_STREAM_H
#define __ADDRESS_SPACE_STREAM_H
#include "IOStream.h"
#include "VirtGpu.h"
#include "address_space_graphics_types.h"
#include "aemu/base/AndroidHealthMonitor.h"
#include "goldfish_address_space.h"
using android::base::guest::HealthMonitor;
class AddressSpaceStream;
AddressSpaceStream* createAddressSpaceStream(size_t bufSize, HealthMonitor<>* healthMonitor);
AddressSpaceStream* createVirtioGpuAddressSpaceStream(HealthMonitor<>* healthMonitor);
class AddressSpaceStream : public IOStream {
public:
explicit AddressSpaceStream(
address_space_handle_t handle,
uint32_t version,
struct asg_context context,
uint64_t ringOffset,
uint64_t writeBufferOffset,
struct address_space_ops ops,
HealthMonitor<>* healthMonitor);
~AddressSpaceStream();
virtual size_t idealAllocSize(size_t len);
virtual void *allocBuffer(size_t minSize);
virtual int commitBuffer(size_t size);
virtual const unsigned char *readFully( void *buf, size_t len);
virtual const unsigned char *read( void *buf, size_t *inout_len);
virtual int writeFully(const void *buf, size_t len);
virtual int writeFullyAsync(const void *buf, size_t len);
virtual const unsigned char *commitBufferAndReadFully(size_t size, void *buf, size_t len);
void setMapping(VirtGpuBlobMappingPtr mapping) {
m_mapping = mapping;
}
void setResourceId(uint32_t id) {
m_resourceId = id;
}
private:
bool isInError() const;
ssize_t speculativeRead(unsigned char* readBuffer, size_t trySize);
void notifyAvailable();
uint32_t getRelativeBufferPos(uint32_t pos);
void advanceWrite();
void ensureConsumerFinishing();
void ensureType1Finished();
void ensureType3Finished();
int type1Write(uint32_t offset, size_t size);
void backoff();
void resetBackoff();
VirtGpuBlobMappingPtr m_mapping = nullptr;
struct address_space_ops m_ops;
unsigned char* m_tmpBuf;
size_t m_tmpBufSize;
size_t m_tmpBufXferSize;
bool m_usingTmpBuf;
unsigned char* m_readBuf;
size_t m_read;
size_t m_readLeft;
address_space_handle_t m_handle;
uint32_t m_version;
struct asg_context m_context;
uint64_t m_ringOffset;
uint64_t m_writeBufferOffset;
uint32_t m_writeBufferSize;
uint32_t m_writeBufferMask;
unsigned char* m_buf;
unsigned char* m_writeStart;
uint32_t m_writeStep;
uint32_t m_notifs;
uint32_t m_written;
uint64_t m_backoffIters;
uint64_t m_backoffFactor;
size_t m_ringStorageSize;
uint32_t m_resourceId = 0;
HealthMonitor<>* m_healthMonitor;
};
#endif