191 lines
4.2 KiB
C++
191 lines
4.2 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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#include <cstddef>
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#include <cstdlib>
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#include <string>
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#include "Common/CommonFuncs.h"
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#include "Common/CommonTypes.h"
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#include "Common/MemoryUtil.h"
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#include "Common/MsgHandler.h"
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#include "Common/Logging/Log.h"
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#ifdef _WIN32
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#include <windows.h>
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#include <psapi.h>
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#include "Common/StringUtil.h"
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#else
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#include <stdio.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#ifdef __APPLE__
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#include <sys/sysctl.h>
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#else
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#include <sys/sysinfo.h>
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#endif
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#endif
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void* AllocateExecutableMemory(size_t size, void* map_hint)
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{
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#if defined(_WIN32)
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void* ptr = VirtualAlloc(0, size, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
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#else
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void* ptr = mmap(map_hint, size, PROT_READ | PROT_WRITE | PROT_EXEC,
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MAP_ANON | MAP_PRIVATE, -1, 0);
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#endif /* defined(_WIN32) */
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#ifdef _WIN32
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if (ptr == nullptr)
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#else
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if (ptr == MAP_FAILED)
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#endif
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{
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ptr = nullptr;
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PanicAlert("Failed to allocate executable memory.");
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}
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#ifdef _X86_64
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ptrdiff_t ofs = (u8*)ptr - (u8*)map_hint;
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if (ofs < -0x80000000ll || ofs + size > 0x80000000ll)
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PanicAlert("Executable range can't be used for RIP-relative addressing.");
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#endif
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return ptr;
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}
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void* AllocateMemoryPages(size_t size)
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{
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#ifdef _WIN32
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void* ptr = VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
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#else
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void* ptr = mmap(nullptr, size, PROT_READ | PROT_WRITE,
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MAP_ANON | MAP_PRIVATE, -1, 0);
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if (ptr == MAP_FAILED)
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ptr = nullptr;
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#endif
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if (ptr == nullptr)
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PanicAlert("Failed to allocate raw memory");
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return ptr;
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}
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void* AllocateAlignedMemory(size_t size, size_t alignment)
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{
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void* ptr = nullptr;
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#ifdef _WIN32
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if (!(ptr = _aligned_malloc(size, alignment)))
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#else
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if (posix_memalign(&ptr, alignment, size))
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#endif
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PanicAlert("Failed to allocate aligned memory");
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return ptr;
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}
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void FreeMemoryPages(void* ptr, size_t size)
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{
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#ifdef _WIN32
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if (ptr && !VirtualFree(ptr, 0, MEM_RELEASE))
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#else
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if (ptr && munmap(ptr, size))
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#endif
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PanicAlert("FreeMemoryPages failed!\n%s", GetLastErrorMsg().c_str());
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}
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void FreeAlignedMemory(void* ptr)
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{
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if (ptr)
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{
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#ifdef _WIN32
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_aligned_free(ptr);
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#else
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free(ptr);
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#endif
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}
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}
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void ReadProtectMemory(void* ptr, size_t size)
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{
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#ifdef _WIN32
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DWORD oldValue;
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if (!VirtualProtect(ptr, size, PAGE_NOACCESS, &oldValue))
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#else
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if (mprotect(ptr, size, PROT_NONE))
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#endif
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PanicAlert("ReadProtectMemory failed!\n%s", GetLastErrorMsg().c_str());
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}
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void WriteProtectMemory(void* ptr, size_t size, bool allowExecute)
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{
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#ifdef _WIN32
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DWORD oldValue;
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if (!VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READ : PAGE_READONLY, &oldValue))
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#else
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if (mprotect(ptr, size, PROT_READ | (allowExecute ? PROT_EXEC : 0)))
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#endif
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PanicAlert("WriteProtectMemory failed!\n%s", GetLastErrorMsg().c_str());
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}
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void UnWriteProtectMemory(void* ptr, size_t size, bool allowExecute)
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{
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#ifdef _WIN32
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DWORD oldValue;
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if (!VirtualProtect(ptr, size, allowExecute ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE, &oldValue))
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#else
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if (mprotect(ptr, size, PROT_READ | PROT_WRITE | (allowExecute ? PROT_EXEC : 0)))
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#endif
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PanicAlert("UnWriteProtectMemory failed!\n%s", GetLastErrorMsg().c_str());
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}
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std::string MemUsage()
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{
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#ifdef _WIN32
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#pragma comment(lib, "psapi")
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DWORD processID = GetCurrentProcessId();
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HANDLE hProcess;
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PROCESS_MEMORY_COUNTERS pmc;
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std::string Ret;
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// Print information about the memory usage of the process.
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hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processID);
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if (nullptr == hProcess)
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return "MemUsage Error";
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if (GetProcessMemoryInfo(hProcess, &pmc, sizeof(pmc)))
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Ret = StringFromFormat("%s K", ThousandSeparate(pmc.WorkingSetSize / 1024, 7).c_str());
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CloseHandle(hProcess);
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return Ret;
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#else
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return "";
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#endif
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}
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size_t MemPhysical()
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{
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#ifdef _WIN32
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MEMORYSTATUSEX memInfo;
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memInfo.dwLength = sizeof(MEMORYSTATUSEX);
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GlobalMemoryStatusEx(&memInfo);
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return memInfo.ullTotalPhys;
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#elif defined(__APPLE__)
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int mib[2];
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size_t physical_memory;
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mib[0] = CTL_HW;
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mib[1] = HW_MEMSIZE;
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size_t length = sizeof(size_t);
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sysctl(mib, 2, &physical_memory, &length, NULL, 0);
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return physical_memory;
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#else
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struct sysinfo memInfo;
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sysinfo (&memInfo);
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return (size_t)memInfo.totalram * memInfo.mem_unit;
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#endif
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}
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