164 lines
4.5 KiB
C++
164 lines
4.5 KiB
C++
/***
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Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: IPCMemory.NT.cpp
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Date: 2022-4-15
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Author: Reece
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***/
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#include <Source/RuntimeInternal.hpp>
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#include "IPC.hpp"
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#include "IPCHandle.hpp"
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#include "IPCMemory.NT.hpp"
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#include <Source/IO/IPC/IPC.hpp>
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#include <Source/IO/IPC/IPCHandle.hpp>
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namespace Aurora::IO::IPC
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{
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Shared memory
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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struct IPCSharedMemoryImpl : IPCSharedMemory
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{
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IPCSharedMemoryImpl(HANDLE handle, void *ptr, const IPC::IPCHandle &ipcHandle);
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~IPCSharedMemoryImpl();
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virtual Memory::MemoryViewWrite GetMemory() override;
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virtual AuUInt GetLength() override;
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virtual AuString ExportToString() override;
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private:
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IPC::IPCHandle ipcHandle_;
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bool owns_;
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HANDLE handle_{};
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void *base_{};
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AuUInt len_ {};
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};
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IPCSharedMemoryImpl::IPCSharedMemoryImpl(HANDLE handle, void *ptr, const IPC::IPCHandle &ipcHandle) :
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base_(ptr), len_(ipcHandle.word), handle_(handle), ipcHandle_(ipcHandle)
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{
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}
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IPCSharedMemoryImpl::~IPCSharedMemoryImpl()
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{
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if (this->base_)
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{
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::UnmapViewOfFile(this->base_);
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}
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AuWin32CloseHandle(this->handle_);
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}
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Memory::MemoryViewWrite IPCSharedMemoryImpl::GetMemory()
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{
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return AuMemoryViewWrite(this->base_, this->len_);
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}
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AuUInt IPCSharedMemoryImpl::GetLength()
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{
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return this->len_;
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}
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AuString IPCSharedMemoryImpl::ExportToString()
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{
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return this->ipcHandle_.ToString();
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}
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AUKN_SYM AuSPtr<IPCSharedMemory> NewSharedMemory(AuUInt length)
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{
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IPC::IPCHandle handle;
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handle.NewId(length);
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auto path = handle.ToNTPath();
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auto file = CreateFileMappingA(INVALID_HANDLE_VALUE,
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nullptr,
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PAGE_READWRITE,
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#if defined(AURORA_IS_64BIT)
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AuBitsToHigher(length),
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AuBitsToLower(length),
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#else
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0,
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length,
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#endif
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path.c_str());
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if ((file == INVALID_HANDLE_VALUE) ||
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(!file))
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{
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return {};
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}
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auto map = ::MapViewOfFile(file,
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FILE_MAP_ALL_ACCESS,
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0,
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0,
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length);
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if (!map)
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{
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SysPushErrorIO();
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AuWin32CloseHandle(file);
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return {};
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}
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auto object = AuMakeShared<IPCSharedMemoryImpl>(file, map, handle);
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if (!object)
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{
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SysPushErrorMem();
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::UnmapViewOfFile(map);
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AuWin32CloseHandle(file);
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return {};
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}
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return object;
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}
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AUKN_SYM AuSPtr<IPCSharedMemory> ImportSharedMemory(const AuString &handleString)
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{
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IPC::IPCHandle handle;
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if (!handle.FromString(handleString))
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{
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SysPushErrorParseError();
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return {};
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}
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auto length = handle.word;
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auto path = handle.ToNTPath();
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auto file = ::OpenFileMappingA(FILE_MAP_ALL_ACCESS,
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FALSE,
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path.c_str());
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if ((file == INVALID_HANDLE_VALUE) ||
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(!file))
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{
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return {};
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}
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auto map = ::MapViewOfFile(file,
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FILE_MAP_ALL_ACCESS,
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0,
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0,
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length);
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if (!map)
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{
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SysPushErrorIO();
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AuWin32CloseHandle(file);
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return {};
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}
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auto object = AuMakeShared<IPCSharedMemoryImpl>(file, map, handle);
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if (!object)
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{
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SysPushErrorMem();
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::UnmapViewOfFile(map);
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AuWin32CloseHandle(file);
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return {};
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}
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return object;
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}
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} |