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Add a shared memory variant of CefProcessMessage (fixes issue #3126)

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CefSharedProcessMessageBuilder supports creation of a CefProcessMessage
backed by a CefSharedMemoryRegion.

Performance tests comparing the existing ArgumentList approach and the new
SharedMemoryRegion approach have been added to cefclient at
http://tests/ipc_performance.

CefMessageRouter has been updated to use SharedMemoryRegion as transport
for larger message payloads. The threshold is configurable via
|CefMessageRouterConfig.message_size_threshold|.

To test:
run `ceftests --gtest_filter=SendSharedProcessMessageTest.*:SharedProcessMessageTest.*:MessageRouterTest.Threshold*`
This commit is contained in:
Nik Pavlov
2022-07-04 09:49:15 +00:00
committed by Marshall Greenblatt
parent a931d49f3e
commit 81e892d19e
55 changed files with 4025 additions and 1132 deletions
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69
include/cef_shared_memory_region.h Normal file
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// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//
#ifndef CEF_INCLUDE_CEF_SHARED_MEMORY_REGION_H_
#define CEF_INCLUDE_CEF_SHARED_MEMORY_REGION_H_
#pragma once
#include "include/cef_base.h"
///
// Class that wraps platform-dependent share memory region mapping.
///
/*--cef(source=library)--*/
class CefSharedMemoryRegion : public virtual CefBaseRefCounted {
public:
///
// Returns true if the mapping is valid.
///
/*--cef()--*/
virtual bool IsValid() = 0;
///
// Returns the size of the mapping in bytes. Returns 0 for invalid instances.
///
/*--cef()--*/
virtual size_t Size() = 0;
///
// Returns the pointer to the memory. Returns nullptr for invalid instances.
// The returned pointer is only valid for the life span of this object.
///
/*--cef()--*/
virtual const void* Memory() = 0;
};
#endif // CEF_INCLUDE_CEF_SHARED_MEMORY_REGION_H_