81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/****************************************************************************
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** GeomIO Library
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** Copyright FougSys (2 Mar. 2015)
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** contact@fougsys.fr
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**
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** This software is a reusable library whose purpose is to provide complete
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** I/O support for various CAD file formats (eg. STL)
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**
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** This software is governed by the CeCILL-B license under French law and
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** abiding by the rules of distribution of free software. You can use,
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** modify and/ or redistribute the software under the terms of the CeCILL-B
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** license as circulated by CEA, CNRS and INRIA at the following URL
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** "http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html".
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****************************************************************************/
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#include "buffer.h"
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#include <stdlib.h>
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#if defined(GMIO_HAVE_BSD_ALLOCA_FUNC)
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# include <alloca.h>
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#elif defined(GMIO_HAVE_WIN_ALLOCA_FUNC)
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# include "error.h"
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# include <windows.h>
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# include <malloc.h>
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#endif
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GMIO_INLINE static gmio_buffer_t gmio_buffer_null()
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{
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gmio_buffer_t buff = { 0 };
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return buff;
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}
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gmio_buffer_t gmio_buffer(void* ptr, size_t size)
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{
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gmio_buffer_t buff;
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buff.ptr = ptr;
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buff.size = size;
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buff.deallocate_func = NULL;
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return buff;
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}
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gmio_buffer_t gmio_buffer_malloc(size_t size)
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{
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gmio_buffer_t buff = gmio_buffer(malloc(size), size);
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buff.deallocate_func = &free;
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return buff;
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}
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gmio_buffer_t gmio_buffer_calloc(size_t num, size_t size)
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{
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gmio_buffer_t buff = gmio_buffer(calloc(num, size), num * size);
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buff.deallocate_func = &free;
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return buff;
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}
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gmio_buffer_t gmio_buffer_alloca(size_t size)
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{
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#if defined(GMIO_HAVE_BSD_ALLOCA_FUNC)
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return gmio_buffer(alloca(size), size);
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#elif defined(GMIO_HAVE_WIN_ALLOCA_FUNC)
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__try {
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return gmio_buffer(_alloca(size), size);
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}
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__except(GetExceptionCode() == STATUS_STACK_OVERFLOW) {
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/* The stack overflowed */
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if (_resetstkoflw() == 0)
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exit(GMIO_UNKNOWN_ERROR);
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return gmio_buffer_null();
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}
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#else
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return gmio_buffer_null();
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#endif
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}
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void gmio_buffer_deallocate(gmio_buffer_t *buffer)
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{
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if (buffer != NULL && buffer->deallocate_func != NULL)
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buffer->deallocate_func(buffer->ptr);
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}
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