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* cygtls.h (_cygtls::init_exception_handler): Eliminate argument.

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(_cygtls::andreas): Convert to a pointer.
(san): Convert to a real class with methods.  Use a linked list to keep track
of previous handlers on the "stack".
(myfault): Rewrite to use new san class rather than calling directly into
_cygtls.
* cygtls.cc (_cygtls::init_exception_handler): Just assume that we're always
using the standard exception handler.
(_cygtls::init_thread): Reflect loss of argument to init_exception_handler.
* dcrt0.cc (dll_crt0_1): Ditto.
* dfcn.cc (dlopen): Ditto.
(dlclose): Reset the exception handler after FreeLibrary.
* dll_init.cc (dll_list::detach): Make sure that the exception handler is
initialized before calling destructors.
* exceptions.cc (_cygtls::handle_exceptions): Accommodate new andreas pointer.
* thread.cc (verifyable_object_isvalid): Pass objectptr to faulted for explicit
NULL pointer checking.
* tlsoffsets.h: Regenerate.
This commit is contained in:
Christopher Faylor
2010-02-26 21:36:31 +00:00
parent b6336c95b4
commit d5d5bf4dd5
9 changed files with 125 additions and 89 deletions
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8
winsup/cygwin/cygtls.cc
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@@ -91,7 +91,7 @@ _cygtls::init_thread (void *x, DWORD (*func) (void *, void *))
locals.process_logmask = LOG_UPTO (LOG_DEBUG);
/* Initialize this thread's ability to respond to things like
SIGSEGV or SIGFPE. */
init_exception_handler (handle_exceptions);
init_exception_handler ();
}
thread_id = GetCurrentThreadId ();
@@ -226,7 +226,7 @@ _cygtls::set_siginfo (sigpacket *pack)
extern exception_list *_except_list asm ("%fs:0");
void
_cygtls::init_exception_handler (exception_handler *eh)
_cygtls::init_exception_handler ()
{
/* Here in the distant past of 17-Jul-2009, we had an issue where Windows
2008 became YA perplexed because the cygwin exception handler was added
@@ -249,7 +249,7 @@ _cygtls::init_exception_handler (exception_handler *eh)
the old exception handler from the list and add it to the beginning.
The next step will probably be to call this function at various points
in cygwin (like from _cygtls::setup_fault maybe) to absoltely ensure that
in cygwin (like from _cygtls::setup_fault maybe) to absolutely ensure that
we have control. For now, however, this seems good enough.
(cgf 2010-02-23)
*/
@@ -275,7 +275,7 @@ _cygtls::init_exception_handler (exception_handler *eh)
Windows 2008, which irremediably gets into an endless loop, taking 100%
CPU. That's why we reverted to a normal SEH chain and changed the way
the exception handler returns to the application. */
el.handler = eh;
el.handler = handle_exceptions;
el.prev = _except_list;
_except_list = ⪙
}