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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_
#define PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_
#include "ppapi/proxy/file_io_resource.h"
#include "ppapi/proxy/plugin_resource.h"
#include "ppapi/proxy/ppapi_proxy_export.h"
#include "ppapi/thunk/ppb_file_mapping_api.h"
namespace ppapi {
namespace proxy {
// The proxy-side resource for PPB_FileMapping.
class PPAPI_PROXY_EXPORT FileMappingResource
: public PluginResource,
public thunk::PPB_FileMapping_API {
public:
FileMappingResource(Connection connection, PP_Instance instance);
private:
virtual ~FileMappingResource();
// Resource implementation.
virtual thunk::PPB_FileMapping_API* AsPPB_FileMapping_API() OVERRIDE;
// PPB_FileMapping_API implementation.
virtual int32_t Map(PP_Instance instance,
PP_Resource file_io,
int64_t length,
uint32_t protection,
uint32_t flags,
int64_t offset,
void** address,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int32_t Unmap(PP_Instance instance,
const void* address,
int64_t length,
scoped_refptr<TrackedCallback> callback) OVERRIDE;
virtual int64_t GetMapPageSize(PP_Instance instance) OVERRIDE;
struct MapResult {
MapResult() : result(PP_ERROR_FAILED), address(NULL) {
}
int32_t result;
void* address;
};
void OnMapCompleted(void** mapped_address_out_param,
int64_t length,
scoped_refptr<TrackedCallback> callback,
const MapResult& map_result);
// These functions perform potentially blocking operations so they should not
// be called on the main thread or while we hold the proxy lock. Their
// implementation is platform specific. See file_mapping_resource_posix.cc and
// file_mapping_resource_win.cc.
static MapResult DoMapBlocking(
scoped_refptr<FileIOResource::FileHandleHolder> handle,
void* address_hint,
int64_t length,
uint32_t protection,
uint32_t flags,
int64_t offset);
static int32_t DoUnmapBlocking(const void* address, int64_t length);
// DoGetMapPageSize is platform-specific, but fast enough that we can call it
// on the main thread with the lock.
static int64_t DoGetMapPageSize();
DISALLOW_COPY_AND_ASSIGN(FileMappingResource);
};
} // namespace proxy
} // namespace ppapi
#endif // PPAPI_PROXY_FILE_MAPPING_RESOURCE_H_
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