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sortix--sortix/libc/malloc/heap_get_paranoia.cpp
Jonas 'Sortie' Termansen 74247eb71e Rewrite malloc(3).
2014-12-03 21:32:50 +01:00

45 lines
1.5 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
malloc/heap_get_paranoia.cpp
Returns how paranoid the heap implementation should be.
*******************************************************************************/
#include <malloc.h>
#include <stdlib.h>
extern "C" int heap_get_paranoia(void)
{
#if defined(PARANOIA_DEFAULT) && !__STDC_HOSTED__
return PARANOIA_DEFAULT;
#elif defined(PARANOIA_DEFAULT) && __STDC_HOSTED__
static int cached_paranoia = -1;
if ( cached_paranoia < 0 )
{
if ( const char* paranoia_str = getenv("LIBC_MALLOC_PARANOIA") )
cached_paranoia = atoi(paranoia_str);
else
cached_paranoia = PARANOIA_DEFAULT;
}
return cached_paranoia;
#else
return PARANOIA;
#endif
}