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7ab909ee47
- License was intended to be GPLv3 per earlier commit of GPLv3 LICENSE FILE - This is confirmed by the inclusion of libraries that are incompatible with GPLv2 - This is also confirmed by KLS and the agreement of KLS's predecessors - Added GPLv3 license headers to the compilable source files - Removed Folly licensing in strings.h since the string functions do not match the Folly functions and are standard functions - this must have been left over from previous implementations - Removed individual contributor license headers since the project has been under the "developer" mantle for many years - Removed comments on files that were previously automatically generated since they've been manually modified multiple times and there are no automatic scripts referencing them (removed in 2023)
84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
/* EQEmu: EQEmulator
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Copyright (C) 2001-2026 EQEmu Development Team
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "common/types.h"
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#include <string>
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namespace EQ {
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//! Memory Backed Shared Memory
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/*!
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Allows us to create shared memory that is backed by a file on both windows and unix platforms that
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works in a consistent manner. Non-copyable.
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*/
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class MemoryMappedFile {
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struct Implementation;
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struct shared_memory_struct;
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//! Underlying data structure.
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struct shared_memory_struct {
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uint32 size;
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unsigned char data[1];
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};
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public:
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//! Constructor
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/*!
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Creates a mmf for the given filename and of size.
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\param filename Actual filename of the mmf.
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\param size Size in bytes of the mmf.
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*/
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MemoryMappedFile(std::string filename, uint32 size);
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//! Constructor
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/*!
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Creates a mmf for the given filename and gets the size based on the existing size.
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\param filename Actual filename of the mmf.
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*/
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MemoryMappedFile(std::string filename);
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//! Destructor
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~MemoryMappedFile();
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//! Get Data Operator
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inline void *operator->() const { return memory_->data; }
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//! Get Data Function
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inline void *Get() const { return memory_->data; }
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//! Get Size Function
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inline uint32 Size() const { return memory_->size; }
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//! Zeros all the memory in the file, and set it to be unloaded
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void ZeroFile();
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private:
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//! Copy Constructor
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MemoryMappedFile(const MemoryMappedFile&);
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//! Assignment Operator
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const MemoryMappedFile& operator=(const MemoryMappedFile&);
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std::string filename_; //!< Filename of this shared memory object
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uint32 size_; //!< Size in bytes of this shared memory object
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shared_memory_struct *memory_; //!< Underlying data of the shared memory object.
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Implementation *imp_; //!< Underlying implementation.
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};
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} // EQEmu
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