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// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_SHARED_IMPL_VPN_PROVIDER_UTIL_H_
#define PPAPI_SHARED_IMPL_VPN_PROVIDER_UTIL_H_
#include <memory>
#include "base/memory/shared_memory_mapping.h"
#include "base/memory/unsafe_shared_memory_region.h"
#include "ppapi/shared_impl/ppapi_shared_export.h"
namespace ppapi {
class PPAPI_SHARED_EXPORT VpnProviderSharedBuffer {
public:
VpnProviderSharedBuffer(uint32_t capacity,
uint32_t packet_size,
base::UnsafeSharedMemoryRegion shm,
base::WritableSharedMemoryMapping mapping);
VpnProviderSharedBuffer(const VpnProviderSharedBuffer&) = delete;
VpnProviderSharedBuffer& operator=(const VpnProviderSharedBuffer&) = delete;
~VpnProviderSharedBuffer();
bool GetAvailable(uint32_t* id);
void SetAvailable(uint32_t id, bool value);
void* GetBuffer(uint32_t id);
uint32_t max_packet_size() { return max_packet_size_; }
base::UnsafeSharedMemoryRegion DuplicateRegion() const;
private:
uint32_t capacity_;
uint32_t max_packet_size_;
base::UnsafeSharedMemoryRegion shm_;
base::WritableSharedMemoryMapping shm_mapping_;
std::vector<bool> available_;
};
} // namespace ppapi
#endif // PPAPI_SHARED_IMPL_VPN_PROVIDER_UTIL_H_
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