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* sigproc.cc (sigproc_terminate): Don't close sendsig handle when execing since

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we're not closing what we think we're closing.
(sig_send): Improve debugging when exiting due to no_signals_available.
* wincap.h (wincaps::cant_debug_dll_entry): New element.
* wincap.cc: Implement above element throughout.
* dcrt0.cc (initial_env): Accommodate changes necessary to allow initial
debugging for systems which do not allow debugging in dll_entry.
(dll_crt0_0): Add initial_env call back here.
* Makefile.in (install-man): Use mandir as target for installation.
* include/cygwin/version.h: Bump DLL minor number to 7 (should have been done
earlier).
This commit is contained in:
Christopher Faylor
2004-01-19 23:03:43 +00:00
parent 403f752cb2
commit d795119cbe
8 changed files with 99 additions and 45 deletions
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37
winsup/cygwin/init.cc
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@ -28,9 +28,6 @@ static void WINAPI
threadfunc_fe (VOID *arg)
{
_threadinfo::call ((DWORD (*) (void *, void *)) (((char **) _tlsbase)[OLDFUNC_OFFSET]), arg);
// void *threadfunc = (void *) TlsGetValue (tls_func);
// TlsFree (tls_func);
// _threadinfo::call ((DWORD (*) (void *, void *)) (threadfunc), arg);
}
static DWORD WINAPI
@ -39,6 +36,25 @@ calibration_thread (VOID *arg)
ExitThread (0);
}
/* We need to know where the OS stores the address of the thread function
on the stack so that we can intercept the call and insert some tls
stuff on the stack. This function starts a known calibration thread.
When it starts, a call will be made to dll_entry which will call munge_threadfunc
looking for the calibration thread offset on the stack. This offset will
be stored and used by all executing cygwin processes. */
void
prime_threads ()
{
if (!threadfunc_ix)
{
DWORD id;
search_for = (char *) calibration_thread;
sync_startup = CreateThread (NULL, 0, calibration_thread, 0, 0, &id);
}
}
/* If possible, redirect the thread entry point to a cygwin routine which
adds tls stuff to the stack. */
static void
munge_threadfunc (HANDLE cygwin_hmodule)
{
@ -71,18 +87,6 @@ foundit:
}
}
void
prime_threads ()
{
// tls_func = TlsAlloc ();
if (!threadfunc_ix)
{
DWORD id;
search_for = (char *) calibration_thread;
sync_startup = CreateThread (NULL, 0, calibration_thread, 0, 0, &id);
}
}
extern void __stdcall dll_crt0_0 ();
extern "C" int WINAPI
@ -93,15 +97,12 @@ dll_entry (HANDLE h, DWORD reason, void *static_load)
case DLL_PROCESS_ATTACH:
prime_threads ();
dynamically_loaded = (static_load == NULL);
// __cygwin_user_data.impure_ptr = &_my_tls.local_clib;
dll_crt0_0 ();
// small_printf ("%u, %p, %p\n", cygwin_pid (GetCurrentProcessId ()), _tlstop, _tlsbase);
break;
case DLL_PROCESS_DETACH:
break;
case DLL_THREAD_ATTACH:
munge_threadfunc (h);
// small_printf ("%u, %p, %p\n", cygwin_pid (GetCurrentProcessId ()), _tlstop, _tlsbase);
break;
case DLL_THREAD_DETACH:
_my_tls.remove (0);