diff options
Diffstat (limited to 'winsup/cygwin/thread.h')
| -rw-r--r-- | winsup/cygwin/thread.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/winsup/cygwin/thread.h b/winsup/cygwin/thread.h index 9adc9e1c7..ec3ca7ebf 100644 --- a/winsup/cygwin/thread.h +++ b/winsup/cygwin/thread.h @@ -16,10 +16,12 @@ details. */ #define WRITE_LOCK 1 #define READ_LOCK 2 -/* Default is a 1 Megs stack with a 4K guardpage. Since the pthread stacksize - does not include the guardpage size, but we don't want to waste another 64K, - subtract the default guardpage size from the stacksize. */ -#define PTHREAD_DEFAULT_STACKSIZE (1024 * 1024 - wincap.page_size ()) +/* Default is a 1 Megs stack with a 4K guardpage. The pthread stacksize + does not include the guardpage size, so we subtract the default guardpage + size. Additionally, the Windows stack handling disallows to use the last + two pages as guard page (tested on XP and W7). That results in a zone of + three pages which have to be subtract to get the actual stack size. */ +#define PTHREAD_DEFAULT_STACKSIZE (1024 * 1024 - 3 * wincap.page_size ()) #define PTHREAD_DEFAULT_GUARDSIZE (wincap.page_size ()) #include <pthread.h> |