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ntdll: Avoid putting the virtual heap in the low 2Gb on 64-bit.

This commit is contained in:
Alexandre Julliard 2010-12-16 20:02:25 +01:00
parent ea8ee88f98
commit 156ba4eddf
1 changed files with 2 additions and 0 deletions
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2
dlls/ntdll/virtual.c
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@ -140,6 +140,7 @@ static void *user_space_limit;
static void *working_set_limit;
static void *address_space_start = (void *)0x10000;
#endif /* __i386__ */
static const int is_win64 = (sizeof(void *) > sizeof(int));
#define ROUND_ADDR(addr,mask) \
((void *)((UINT_PTR)(addr) & ~(UINT_PTR)(mask)))
@ -1357,6 +1358,7 @@ static int alloc_virtual_heap( void *base, size_t size, void *arg )
if (is_beyond_limit( base, size, address_space_limit )) address_space_limit = (char *)base + size;
if (size < VIRTUAL_HEAP_SIZE) return 0;
if (is_win64 && base < (void *)0x80000000) return 0;
*heap_base = wine_anon_mmap( (char *)base + size - VIRTUAL_HEAP_SIZE,
VIRTUAL_HEAP_SIZE, PROT_READ|PROT_WRITE, MAP_FIXED );
return (*heap_base != (void *)-1);