mirror of
https://github.com/libretro/ppsspp.git
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82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
// Copyright (C) 2003 Dolphin Project.
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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, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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#ifndef _MEMORYUTIL_H
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#define _MEMORYUTIL_H
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#ifndef _WIN32
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#include <sys/mman.h>
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#endif
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#include <string>
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void* AllocateExecutableMemory(size_t size, bool low = true);
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void* AllocateMemoryPages(size_t size);
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void FreeMemoryPages(void* ptr, size_t size);
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void* AllocateAlignedMemory(size_t size,size_t alignment);
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void FreeAlignedMemory(void* ptr);
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void WriteProtectMemory(void* ptr, size_t size, bool executable = false);
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void UnWriteProtectMemory(void* ptr, size_t size, bool allowExecute = false);
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std::string MemUsage();
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inline int GetPageSize() { return 4096; }
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template <typename T>
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class SimpleBuf {
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public:
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SimpleBuf() : buf_(NULL), size_(0) {
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}
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SimpleBuf(size_t size) : buf_(NULL) {
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resize(size);
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}
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~SimpleBuf() {
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if (buf_ != NULL) {
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FreeMemoryPages(buf_, size_ * sizeof(T));
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}
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}
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inline T &operator[](size_t index) {
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return buf_[index];
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}
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// Doesn't preserve contents.
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void resize(size_t size) {
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if (size_ < size) {
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if (buf_ != NULL) {
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FreeMemoryPages(buf_, size_ * sizeof(T));
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}
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buf_ = (T *)AllocateMemoryPages(size * sizeof(T));
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size_ = size;
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}
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}
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T *data() {
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return buf_;
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}
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size_t size() {
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return size_;
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}
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private:
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T *buf_;
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size_t size_;
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};
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#endif
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