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* cygwin.din (pthread_attr_getguardsize): Export.

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(pthread_attr_setguardsize): Export.
	(pthread_attr_setstack): Export.
	(pthread_attr_setstackaddr): Export.
	* init.cc (dll_entry): Remove wow64_test_stack_marker.  Check for
	unusual stack address by testing stack addresses from current TEB.
	Check validity of _my_tls by testing if it's within the stack as
	given in current TEB.
	* miscfuncs.cc (struct thread_wrapper_arg): New structure used to
	push all required information to thread_wrapper function.
	(thread_wrapper): Wrapper function for actual thread function.
	If an application stack has been given, change %ebp and %esp so that
	the thread function runs on that stack.  If the thread has been created
	by CygwinCreateThread, set up the POSIX guard pages if necessary.
	(CygwinCreateThread): New function.
	* miscfuncs.h (CygwinCreateThread): Declare.
	* ntdll.h (struct _TEB): Define all members up to Peb.
	* posix.sgml (std-susv4): Move pthread_attr_getguardsize,
	pthread_attr_setguardsize and pthread_attr_setstack here.
	(std-deprec): Add pthread_attr_setstackaddr.
	* sysconf.cc (sca): Set _SC_THREAD_ATTR_STACKADDR to
	_POSIX_THREAD_ATTR_STACKADDR.
	* thread.cc (pthread::precreate): Copy pthread_attr stackaddr and
	guardsize members.
	(pthread::create): Call CygwinCreateThread.
	(pthread_attr::pthread_attr): Initialize guardsize.
	(pthread_attr_setstack): New function.
	(pthread_attr_setstackaddr): New function.
	(pthread_attr_setguardsize): New function.
	(pthread_attr_getguardsize): New function.
	(pthread_getattr_np): Copy attr.guardsize.
	* thread.h (pthread_attr): Add member guardsize.
	* include/pthread.h (pthread_attr_getguardsize): Declare.
	(pthread_attr_setguardsize): Declare.
	* include/cygwin/version.h: Bump API minor number.
This commit is contained in:
Corinna Vinschen
2011-05-15 18:49:40 +00:00
parent 2922c6c4aa
commit cdb4231369
12 changed files with 274 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
winsup/cygwin/init.cc
View File

@@ -1,7 +1,7 @@
/* init.cc
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009 Red Hat, Inc.
2006, 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
This file is part of Cygwin.
@@ -115,7 +115,7 @@ extern void __stdcall dll_crt0_0 ();
extern "C" BOOL WINAPI
dll_entry (HANDLE h, DWORD reason, void *static_load)
{
BOOL wow64_test_stack_marker;
PNT_TIB tib;
switch (reason)
{
@@ -131,9 +131,10 @@ dll_entry (HANDLE h, DWORD reason, void *static_load)
the auto load address of DLLs?
Check if we're running in WOW64 on a 64 bit machine *and* are
spawned by a genuine 64 bit process. If so, respawn. */
tib = &NtCurrentTeb ()->Tib;
if (wincap.is_wow64 ()
&& &wow64_test_stack_marker >= (PBOOL) 0x400000
&& &wow64_test_stack_marker <= (PBOOL) 0x10000000)
&& tib->StackLimit >= (PBOOL) 0x400000
&& tib->StackBase <= (PBOOL) 0x10000000)
respawn_wow64_process ();
dll_crt0_0 ();
@@ -149,7 +150,10 @@ dll_entry (HANDLE h, DWORD reason, void *static_load)
munge_threadfunc ();
break;
case DLL_THREAD_DETACH:
if (dll_finished_loading && (void *) &_my_tls > (void *) &wow64_test_stack_marker
tib = &NtCurrentTeb ()->Tib;
if (dll_finished_loading
&& (PVOID) &_my_tls >= tib->StackLimit
&& (PVOID) &_my_tls < tib->StackBase
&& _my_tls.isinitialized ())
_my_tls.remove (0);
break;