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/* ----------------------------------------------------------------------------
Copyright (c) 2018,2019, Microsoft Research, Daan Leijen
This is free software; you can redistribute it and/or modify it under the
terms of the MIT license. A copy of the license can be found in the file
"LICENSE" at the root of this distribution.
-----------------------------------------------------------------------------*/
// ------------------------------------------------------------------------
// mi prefixed publi definitions of various Posix, Unix, and C++ functions
// for convenience and used when overriding these functions.
// ------------------------------------------------------------------------
#include "mimalloc.h"
#include "mimalloc-internal.h"
// ------------------------------------------------------
// Posix & Unix functions definitions
// ------------------------------------------------------
#include <errno.h>
#ifndef EINVAL
#define EINVAL 22
#endif
#ifndef ENOMEM
#define ENOMEM 12
#endif
size_t mi_malloc_size(const void* p) mi_attr_noexcept {
return mi_usable_size(p);
}
size_t mi_malloc_usable_size(const void *p) mi_attr_noexcept {
return mi_usable_size(p);
}
void mi_cfree(void* p) mi_attr_noexcept {
mi_free(p);
}
int mi_posix_memalign(void** p, size_t alignment, size_t size) mi_attr_noexcept {
// Note: The spec dictates we should not modify `*p` on an error. (issue#27)
// <http://man7.org/linux/man-pages/man3/posix_memalign.3.html>
if (p == NULL) return EINVAL;
if (alignment % sizeof(void*) != 0) return EINVAL; // natural alignment
if ((alignment & (alignment - 1)) != 0) return EINVAL; // not a power of 2
void* q = mi_malloc_aligned(size, alignment);
if (q==NULL && size != 0) return ENOMEM;
*p = q;
return 0;
}
int mi__posix_memalign(void** p, size_t alignment, size_t size) mi_attr_noexcept {
return mi_posix_memalign(p, alignment, size);
}
void* mi_memalign(size_t alignment, size_t size) mi_attr_noexcept {
return mi_malloc_aligned(size, alignment);
}
void* mi_valloc(size_t size) mi_attr_noexcept {
return mi_malloc_aligned(size, _mi_os_page_size());
}
void* mi_pvalloc(size_t size) mi_attr_noexcept {
size_t psize = _mi_os_page_size();
if (size >= SIZE_MAX - psize) return NULL; // overflow
size_t asize = ((size + psize - 1) / psize) * psize;
return mi_malloc_aligned(asize, psize);
}
void* mi_aligned_alloc(size_t alignment, size_t size) mi_attr_noexcept {
return mi_malloc_aligned(size, alignment);
}
void* mi_reallocarray( void* p, size_t count, size_t size ) mi_attr_noexcept { // BSD
void* newp = mi_reallocn(p,count,size);
if (newp==NULL) errno = ENOMEM;
return newp;
}
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