obs-StreamFX/source/util-memory.cpp
Michael Fabian 'Xaymar' Dirks e0e2d9fe80 project: Improve Linux support (#27 and #13)
While Linux was not an original goal of the project, it should still be supported out of the box. Therefore a number of changes are contained in this changeset:

- All C++ .h files were renamed to .hpp.
- All C includes (<....h>) were replaced with C++ includes (<c...>) and missing includes were added.
- std::memset and std::memcpy was replaced with memset and memcpy.
- All anonymous structs were removed where necessary.
- `extern "C"` was removed where it wasn't needed.
- #pragma warning was placed behind an #ifdef _MSC_VER
- The macros for `min`, `max` and `clamp` were removed as they were not used.
- `-fpedantic` was added to the GCC flags for bitmask support.
- `gs::rendertarget_op` is now declared before use.
- std::exception(const char*) was replaced with std::runtime_error(const char*).
- Added aligned_alloc and aligned_free macros for GCC and MSVC support.
- Replaced use of `sprintf_s` with `snprintf`.
- Placed additional guards around windows only code.

Additonally some changes were made that do not affect Linux:
- `NOMINMAX` and `NOINOUT` were removed.

Fixes: #27
Fixes: #13
2019-01-14 22:31:35 +01:00

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1.7 KiB
C++

/*
* Modern effects for a modern Streamer
* Copyright (C) 2017 Michael Fabian Dirks
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "util-memory.hpp"
#include <cstdlib>
#define USE_STD_ALLOC_FREE
void* util::malloc_aligned(size_t align, size_t size)
{
#ifdef USE_STD_ALLOC_FREE
return aligned_alloc(align, size);
#else
// Ensure that we have space for the pointer and the data.
size_t asize = aligned_offset(align, size + (sizeof(void*) * 2));
// Allocate memory and store integer representation of pointer.
void* ptr = malloc(asize);
// Calculate actual aligned position
intptr_t ptr_off = aligned_offset(align, reinterpret_cast<size_t>(ptr) + sizeof(void*));
// Store actual pointer at ptr_off - sizeof(void*).
*reinterpret_cast<intptr_t*>(ptr_off - sizeof(void*)) = reinterpret_cast<intptr_t>(ptr);
// Return aligned pointer
return reinterpret_cast<void*>(ptr_off);
#endif
}
void util::free_aligned(void* mem)
{
#ifdef USE_STD_ALLOC_FREE
aligned_free(mem);
#else
void* ptr = reinterpret_cast<void*>(*reinterpret_cast<intptr_t*>(static_cast<char*>(mem) - sizeof(void*)));
free(ptr);
#endif
}