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* cygheap.h (struct user_heap_info): Add slop member.

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* heap.cc (heap_init): Add slop factor to heap allocation.  Add
	comment.
	* mmap.cc (MapViewNT): Allocate memory maps top down.
	(fhandler_dev_zero::mmap): Ditto.
	* shared.cc (shared_info::heap_slop_size): New method.
	(shared_info::heap_chunk_size): Don't use debug_printf at early stage.
	* shared_info.h (SHARED_INFO_CB): Accomodate change to shared_info.
	(CURR_SHARED_MAGIC): Ditto.
	(class shared_info): Add heap_slop member.  Declare heap_slop_size.
	* wincap.h: Define heapslop throughout.
	* wincap.cc: Ditto.
This commit is contained in:
Corinna Vinschen
2006-10-31 18:41:16 +00:00
parent 9740f34d11
commit c2b10dc4d8
8 changed files with 91 additions and 10 deletions
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6
winsup/cygwin/mmap.cc
View File

@ -350,7 +350,8 @@ MapViewNT (HANDLE h, void *addr, size_t len, DWORD openflags,
void *base = addr;
ULONG commitsize = attached (prot) ? 0 : len;
ULONG viewsize = len;
ULONG alloc_type = base && !wincap.is_wow64 () ? AT_ROUND_TO_PAGE : 0;
ULONG alloc_type = (base && !wincap.is_wow64 () ? AT_ROUND_TO_PAGE : 0)
| MEM_TOP_DOWN;
/* Try mapping using the given address first, even if it's NULL.
If it failed, and addr was not NULL and flags is not MAP_FIXED,
@ -1669,7 +1670,8 @@ fhandler_dev_zero::mmap (caddr_t *addr, size_t len, int prot,
when using the (non-POSIX, yay-Linux) MAP_NORESERVE flag.
*/
DWORD protect = gen_protect (prot, flags);
DWORD alloc_type = MEM_RESERVE | (noreserve (flags) ? 0 : MEM_COMMIT);
DWORD alloc_type = MEM_TOP_DOWN | MEM_RESERVE
| (noreserve (flags) ? 0 : MEM_COMMIT);
base = VirtualAlloc (*addr, len, alloc_type, protect);
if (!base && addr && !fixed (flags))
base = VirtualAlloc (NULL, len, alloc_type, protect);