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