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newlib-cygwin
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* wincap.h (wincaps::has_buggy_thread_startup): Declare. 

(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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16
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,19 @@
2010-09-19 Christopher Faylor <me+cygwin@cgf.cx>
* wincap.h (wincaps::has_buggy_thread_startup): Declare.
(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.
2010-09-15 Corinna Vinschen <corinna@vinschen.de>
* fhandler_disk_file.cc (fhandler_base::fstat_by_handle): Fetch number

1
winsup/cygwin/cygthread.h
View File

@ -79,6 +79,7 @@ class cygthread
void * operator new (size_t);
static cygthread *freerange ();
static void terminate ();
HANDLE thread_handle () const {return h;}
bool SetThreadPriority (int nPriority) {return ::SetThreadPriority (h, nPriority);}
void zap_h ()
{

27
winsup/cygwin/dcrt0.cc
View File

@ -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

13
winsup/cygwin/wincap.cc
View File

@ -60,6 +60,7 @@ wincaps wincap_unknown __attribute__((section (".cygwin_dll_common"), shared)) =
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:false,
has_buggy_thread_startup:false,
};
wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -101,6 +102,7 @@ wincaps wincap_nt4 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:false,
has_buggy_thread_startup:false,
};
wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -142,6 +144,7 @@ wincaps wincap_nt4sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:false,
has_buggy_thread_startup:false,
};
wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -183,6 +186,7 @@ wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -224,6 +228,7 @@ wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -265,6 +270,7 @@ wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -306,6 +312,7 @@ wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -347,6 +354,7 @@ wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -388,6 +396,7 @@ wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:false,
has_localenames:false,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -429,6 +438,7 @@ wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:true,
has_localenames:true,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:true,
};
wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
@ -470,6 +480,7 @@ wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
has_always_all_codepages:true,
has_localenames:true,
has_mwmo_inputavailable:true,
has_buggy_thread_startup:false,
};
wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
@ -576,6 +587,8 @@ wincapc::init ()
((wincaps *)caps)->has_restricted_stack_args = false;
}
if (!wow64)
((wincaps *) caps)->has_buggy_thread_startup = false;
__small_sprintf (osnam, "NT-%d.%d", version.dwMajorVersion,
version.dwMinorVersion);
}

2
winsup/cygwin/wincap.h
View File

@ -52,6 +52,7 @@ struct wincaps
unsigned has_always_all_codepages : 1;
unsigned has_localenames : 1;
unsigned has_mwmo_inputavailable : 1;
unsigned has_buggy_thread_startup : 1;
};
class wincapc
@ -109,6 +110,7 @@ public:
bool IMPLEMENT (has_always_all_codepages)
bool IMPLEMENT (has_localenames)
bool IMPLEMENT (has_mwmo_inputavailable)
bool IMPLEMENT (has_buggy_thread_startup)
#undef IMPLEMENT
};