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* wincap.h (wincaps::has_buggy_thread_startup): Declare.

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(wincapc::has_buggy_thread_startup): Ditto.
* wincap.cc::wincap_*): Accommodate has_buggy_thread_startup.
(wincapc::init): Explicitly turn off has_buggy_thread_startup if not WOW64.
* cygthread.h (cygthread::thread_handle): Declare/define new method.
* dcrt0.cc (_dll_crt0): Don't call __sinit here.
(dll_crt0_0): Don't call sigproc_init during initialization if
wincap.has_buggy_thread_startup().
(dll_crt0_1): Defer sigproc_init to here when
wincap.has_buggy_thread_startup().  Call __sinit after we've determined that
we're not forking.
(__main): Rework comments.  Add potential future reminder.
This commit is contained in:
Christopher Faylor
2010-09-19 20:18:36 +00:00
parent 392397f46c
commit b64733135a
5 changed files with 45 additions and 14 deletions
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27
winsup/cygwin/dcrt0.cc
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@@ -774,7 +774,7 @@ dll_crt0_0 ()
/* Initialize signal processing here, early, in the hopes that the creation
of a thread early in the process will cause more predictability in memory
layout for the main thread. */
if (!dynamically_loaded)
if (!wincap.has_buggy_thread_startup () && !dynamically_loaded)
sigproc_init ();
debug_printf ("finished dll_crt0_0 initialization");
@@ -789,7 +789,7 @@ dll_crt0_1 (void *)
{
extern void initial_setlocale ();
if (dynamically_loaded)
if (wincap.has_buggy_thread_startup () || dynamically_loaded)
sigproc_init ();
check_sanity_and_sync (user_data);
@@ -853,6 +853,8 @@ dll_crt0_1 (void *)
longjmp (fork_info->jmp, true);
}
__sinit (_impure_ptr);
#ifdef DEBUGGING
{
extern void fork_init ();
@@ -968,16 +970,9 @@ _dll_crt0 ()
{
main_environ = user_data->envptr;
if (in_forkee)
{
fork_info->alloc_stack ();
_main_tls = &_my_tls;
}
else
{
_main_tls = &_my_tls;
__sinit (_impure_ptr);
}
fork_info->alloc_stack ();
_main_tls = &_my_tls;
_main_tls->call ((DWORD (*) (void *, void *)) dll_crt0_1, NULL);
}
@@ -1023,12 +1018,16 @@ __main (void)
queued call to DLL dtors now. */
atexit (dll_global_dtors);
do_global_ctors (user_data->ctors, false);
/* Now we have run global ctors, register their dtors. */
atexit (do_global_dtors);
/* At exit, global dtors will run first, so the app can still
/* Now we have run global ctors, register their dtors.
At exit, global dtors will run first, so the app can still
use shared library functions while terminating; then the
DLLs will be destroyed; finally newlib will shut down stdio
and terminate itself. */
atexit (do_global_dtors);
#if 0 /* Don't enable for now. See if we really need this. */
sig_dispatch_pending (true);
#endif
}
void __stdcall