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* cygwin.din (pthread_attr_getstack): Export.

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(pthread_attr_getstackaddr): Export.
(pthread_getattr_np): Export.
* ntdll.h (enum _THREAD_INFORMATION_CLASS): Add ThreadBasicInformation.
(struct _THREAD_BASIC_INFORMATION): Define.
(NtQueryInformationThread): Declare.
* posix.sgml (std-susv4): Add pthread_attr_getstack.
(std-gnu): Add pthread_getattr_np.
(std-deprec): Add pthread_attr_getstackaddr.
(std-notimpl): Remove pthread_attr_[gs]etstackaddr, as they were
removed from SUSv4.
* thread.cc (pthread_attr::pthread_attr): Initialize stackaddr.
(pthread_attr_getstack): New function.
(pthread_attr_getstackaddr): New function.
(pthread_attr_setstacksize): Return EINVAL if passed size less than
PTHREAD_STACK_MIN, as required by POSIX.
(pthread_getattr_np): New function.
* thread.h (class pthread_attr): Add stackaddr member.
* include/pthread.h (pthread_attr_getstack): Declare.
(pthread_attr_getstackaddr): Declare unconditionally.
(pthread_attr_setstack): Declare inside false conditional for reference.
(pthread_getattr_np): Declare.
* include/cygwin/version.h (CYGWIN_VERSION_API_MINOR): Bump.
This commit is contained in:
Yaakov Selkowitz
2011-05-03 01:13:37 +00:00
parent 1e92c34ee4
commit 705a187ee9
8 changed files with 122 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
winsup/cygwin/thread.cc
View File

@@ -1085,7 +1085,7 @@ pthread::resume ()
pthread_attr::pthread_attr ():verifyable_object (PTHREAD_ATTR_MAGIC),
joinable (PTHREAD_CREATE_JOINABLE), contentionscope (PTHREAD_SCOPE_PROCESS),
inheritsched (PTHREAD_INHERIT_SCHED), stacksize (0)
inheritsched (PTHREAD_INHERIT_SCHED), stackaddr (NULL), stacksize (0)
{
schedparam.sched_priority = 0;
}
@@ -2237,11 +2237,35 @@ pthread_attr_setscope (pthread_attr_t *attr, int contentionscope)
return 0;
}
extern "C" int
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 *)((int)(*attr)->stackaddr - (*attr)->stacksize);
*size = (*attr)->stacksize;
return 0;
}
extern "C" int
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;
}
extern "C" int
pthread_attr_setstacksize (pthread_attr_t *attr, size_t size)
{
if (!pthread_attr::is_good_object (attr))
return EINVAL;
if (size < PTHREAD_STACK_MIN)
return EINVAL;
(*attr)->stacksize = size;
return 0;
}
@@ -2381,6 +2405,51 @@ pthread::resume (pthread_t *thread)
return 0;
}
extern "C" int
pthread_getattr_np (pthread_t thread, pthread_attr_t *attr)
{
const size_t sizeof_tbi = sizeof (THREAD_BASIC_INFORMATION);
PTHREAD_BASIC_INFORMATION tbi;
NTSTATUS ret;
if (!pthread::is_good_object (&thread))
return ESRCH;
/* attr may not be pre-initialized */
if (!pthread_attr::is_good_object (attr))
{
int rv = pthread_attr_init (attr);
if (rv != 0)
return rv;
}
(*attr)->joinable = thread->attr.joinable;
(*attr)->contentionscope = thread->attr.contentionscope;
(*attr)->inheritsched = thread->attr.inheritsched;
(*attr)->schedparam = thread->attr.schedparam;
tbi = (PTHREAD_BASIC_INFORMATION) malloc (sizeof_tbi);
ret = NtQueryInformationThread (thread->win32_obj_id, ThreadBasicInformation,
tbi, sizeof_tbi, NULL);
if (NT_SUCCESS (ret))
{
PNT_TIB tib = tbi->TebBaseAddress;
(*attr)->stackaddr = tib->StackBase;
/* stack grows downwards on x86 systems */
(*attr)->stacksize = (int)tib->StackBase - (int)tib->StackLimit;
}
else
{
debug_printf ("NtQueryInformationThread(ThreadBasicInformation), "
"status %p", ret);
(*attr)->stackaddr = thread->attr.stackaddr;
(*attr)->stacksize = thread->attr.stacksize;
}
return 0;
}
/* provided for source level compatability.
See http://www.opengroup.org/onlinepubs/007908799/xsh/pthread_getconcurrency.html
*/