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Check for existing reserved areas in mmap_init to avoid doing 

duplicate work.
This commit is contained in:
Alexandre Julliard 2004-06-03 00:44:50 +00:00
parent d6bd6b0488
commit fa3544bbdf
1 changed files with 16 additions and 1 deletions
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17
libs/wine/mmap.c
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@ -225,9 +225,24 @@ static void reserve_area( void *addr, void *end )
*/
void mmap_init(void)
{
static char * const user_space_limit = (char *)0x80000000;
struct reserved_area *area;
struct list *ptr;
char stack;
char * const stack_ptr = &stack;
char *user_space_limit = (char *)0x80000000;
/* check for a reserved area starting at the user space limit */
/* to avoid wasting time trying to allocate it again */
LIST_FOR_EACH( ptr, &reserved_areas )
{
area = LIST_ENTRY( ptr, struct reserved_area, entry );
if ((char *)area->base > user_space_limit) break;
if ((char *)area->base + area->size > user_space_limit)
{
user_space_limit = (char *)area->base + area->size;
break;
}
}
if (stack_ptr >= user_space_limit)
{