mirror of https://github.com/PCSX2/pcsx2.git
127 lines
2.6 KiB
C++
127 lines
2.6 KiB
C++
/*
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* Copyright (C) 2007-2009 Gabest
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* http://www.gabest.org
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*
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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 2, or (at your option)
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* any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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// stdafx.cpp : source file that includes just the standard includes
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// GSdx.pch will be the pre-compiled header
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// stdafx.obj will contain the pre-compiled type information
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#include "stdafx.h"
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// TODO: reference any additional headers you need in STDAFX.H
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// and not in this file
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string format(const char* fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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int result = -1, length = 256;
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char* buffer = NULL;
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while(result == -1)
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{
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if(buffer) delete [] buffer;
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buffer = new char[length + 1];
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memset(buffer, 0, length + 1);
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result = vsnprintf(buffer, length, fmt, args);
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length *= 2;
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}
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va_end(args);
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string s(buffer);
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delete [] buffer;
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return s;
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}
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#ifdef _WINDOWS
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void* vmalloc(size_t size, bool code)
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{
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return VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, code ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE);
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}
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void vmfree(void* ptr, size_t size)
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{
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VirtualFree(ptr, 0, MEM_RELEASE);
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}
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#else
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#include <sys/mman.h>
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#include <unistd.h>
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void* vmalloc(size_t size, bool code)
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{
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size_t mask = getpagesize() - 1;
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size = (size + mask) & ~mask;
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int flags = PROT_READ | PROT_WRITE;
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if(code)
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{
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flags |= PROT_EXEC;
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}
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return mmap(NULL, size, flags, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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}
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void vmfree(void* ptr, size_t size)
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{
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size_t mask = getpagesize() - 1;
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size = (size + mask) & ~mask;
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munmap(ptr, size);
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}
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#endif
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#if !defined(_MSC_VER) && !defined(HAVE_ALIGNED_MALLOC)
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// declare linux equivalents (alignment must be power of 2 (1,2,4...2^15)
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void* _aligned_malloc(size_t size, size_t alignment)
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{
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ASSERT(alignment <= 0x8000);
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size_t r = (size_t)malloc(size + --alignment + 2);
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size_t o = (r + 2 + alignment) & ~(size_t)alignment;
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if(!r) return NULL;
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((uint16*)o)[-1] = (uint16)(o-r);
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return (void*)o;
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}
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void _aligned_free(void* p)
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{
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if(!p) return;
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free((void*)((size_t)p-((uint16*)p)[-1]));
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}
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#endif
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