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* thread.cc (pthread::create): Use PTHREAD_DEFAULT_STACKSIZE stacksize

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if attr.stacksize is 0.
	(pthread_attr::pthread_attr): Initialize stacksize to 0 to align more
	closely to Linux.
	(pthread_attr_getstack): Fix incorrect stackaddr computation.  Return
	stackaddr just like pthread_attr_getstackaddr.  Remove slightly off
	comment.
	(pthread_attr_getstackaddr): Remove slightly off comment.
	(pthread_getattr_np): Return stackaddr and stacksize based on the full
	allocated stackarea.
This commit is contained in:
Corinna Vinschen 2014-07-09 12:06:08 +00:00
parent 3dab1e488a
commit 96ed53c10f
2 changed files with 23 additions and 13 deletions
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13
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,16 @@
2014-07-09 Corinna Vinschen <corinna@vinschen.de>
* thread.cc (pthread::create): Use PTHREAD_DEFAULT_STACKSIZE stacksize
if attr.stacksize is 0.
(pthread_attr::pthread_attr): Initialize stacksize to 0 to align more
closely to Linux.
(pthread_attr_getstack): Fix incorrect stackaddr computation. Return
stackaddr just like pthread_attr_getstackaddr. Remove slightly off
comment.
(pthread_attr_getstackaddr): Remove slightly off comment.
(pthread_getattr_np): Return stackaddr and stacksize based on the full
allocated stackarea.
2014-07-09 Corinna Vinschen <corinna@vinschen.de>
* exceptions.cc (exception::myfault_handle): Rephrase comment.

23
winsup/cygwin/thread.cc
View File

@ -473,9 +473,9 @@ pthread::create (void *(*func) (void *), pthread_attr *newattr,
arg = threadarg;
mutex.lock ();
win32_obj_id = CygwinCreateThread (thread_init_wrapper, this,
attr.stackaddr, attr.stacksize,
attr.guardsize, 0, &thread_id);
win32_obj_id = CygwinCreateThread (thread_init_wrapper, this, attr.stackaddr,
attr.stacksize ?: PTHREAD_DEFAULT_STACKSIZE,
attr.guardsize, 0, &thread_id);
if (!win32_obj_id)
{
@ -1083,8 +1083,8 @@ pthread::resume ()
pthread_attr::pthread_attr ():verifyable_object (PTHREAD_ATTR_MAGIC),
joinable (PTHREAD_CREATE_JOINABLE), contentionscope (PTHREAD_SCOPE_PROCESS),
inheritsched (PTHREAD_INHERIT_SCHED), stackaddr (NULL),
stacksize (PTHREAD_DEFAULT_STACKSIZE), guardsize (PTHREAD_DEFAULT_GUARDSIZE)
inheritsched (PTHREAD_INHERIT_SCHED), stackaddr (NULL), stacksize (0),
guardsize (PTHREAD_DEFAULT_GUARDSIZE)
{
schedparam.sched_priority = 0;
}
@ -2263,8 +2263,7 @@ pthread_attr_getstack (const pthread_attr_t *attr, void **addr, size_t *size)
{
if (!pthread_attr::is_good_object (attr))
return EINVAL;
/* uses lowest address of stack on all platforms */
*addr = (void *)((ptrdiff_t)(*attr)->stackaddr - (*attr)->stacksize);
*addr = (*attr)->stackaddr;
*size = (*attr)->stacksize;
return 0;
}
@ -2285,8 +2284,6 @@ pthread_attr_getstackaddr (const pthread_attr_t *attr, void **addr)
{
if (!pthread_attr::is_good_object (attr))
return EINVAL;
/* uses stack address, which is the higher address on platforms
where the stack grows downwards, such as x86 */
*addr = (*attr)->stackaddr;
return 0;
}
@ -2488,11 +2485,11 @@ pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
tbi, sizeof_tbi, NULL);
if (NT_SUCCESS (status))
{
PNT_TIB tib = tbi->TebBaseAddress;
(*attr)->stackaddr = tib->StackBase;
PTEB teb = (PTEB) tbi->TebBaseAddress;
(*attr)->stackaddr = teb->DeallocationStack ?: teb->Tib.StackLimit;
/* stack grows downwards on x86 systems */
(*attr)->stacksize = (uintptr_t) tib->StackBase
- (uintptr_t) tib->StackLimit;
(*attr)->stacksize = (uintptr_t) teb->Tib.StackBase
- (uintptr_t) (*attr)->stackaddr;
}
else
{