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/*
FALCON - The Falcon Programming Language.
FILE: heap_posix.cpp
Class for heap management - system specific for POSIX compliant
systems.
-------------------------------------------------------------------
Author: Giancarlo Niccolai
Begin: Sat, 13 Dec 2008 13:45:59 +0100
-------------------------------------------------------------------
(C) Copyright 2008: the FALCON developers (see list in AUTHORS file)
See LICENSE file for licensing details.
*/
/** \file
Class for heap management - system specific for POSIX compliant
systems.
*/
#include <falcon/heap.h>
#include <falcon/fassert.h>
#include <unistd.h>
#include <sys/mman.h>
// For BSD
#ifndef MAP_ANONYMOUS
# define MAP_ANONYMOUS MAP_ANON
#endif
namespace Falcon
{
static int s_pageSize;
HeapMem Heap;
HeapMem::HeapMem()
{
s_pageSize = sysconf( _SC_PAGESIZE );
}
HeapMem::~HeapMem()
{
}
namespace Sys {
int sys_pageSize()
{
return s_pageSize;
}
void *sys_allocPage()
{
void *ret = mmap(((char *)0), s_pageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
fassert( ret != MAP_FAILED );
return ret;
}
void sys_freePage( void *page )
{
munmap( (char*) page, s_pageSize );
}
}
}
/* end of heap_posix.cpp */
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