* Makefile.in (clean): Remove sigfe.s.
(sigfe.s): Ensure that sigfe.s will be regenerated if it does not exist. * dll_init.cc (dll_dllcrt0): Simplify initializing tests. * exceptions.cc (setup_handler): Detect when stub caller is either spinning or has acquired the lock after being suspended to avoid windows problems with suspending a win32 API call. * cygtls.h (_cygtls::spinning): Declare new element. * gendef: Remove unused _siglist_index and _siglist declaration. (_sigfe): Set spinning element when potentially looping, waiting for lock. (_sigbe): Ditto. (_cygtls::lock): Ditto. (_longjmp): Ditto. * tlsoffsets.h: Regenerate. * pinfo.cc (_pinfo::exit): Set final exit state here. Call sigproc_terminate if invoked with 'norecord'. Clear any residual _cygtls stuff. * winsup.h (exit_states): Define ES_FINAL. * spawn.cc (spawn_guts): Don't call proc_terminate specifically when execing. Let _pinfo::exit handle that case. * sigproc.cc (wait_subproc): Always exit loop early when proc_loop_wait. * init.cc (munge_threadfunc): Eliminate unused argument. (dll_entry): Reflect above change in call to munge_threadfunc.
This commit is contained in:
Christopher Faylor
parent
b3535c2730
commit
edc4f86ad2
@ -1,3 +1,31 @@
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2004-02-13 Christopher Faylor <cgf@redhat.com>
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* Makefile.in (clean): Remove sigfe.s.
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(sigfe.s): Ensure that sigfe.s will be regenerated if it does not exist.
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* dll_init.cc (dll_dllcrt0): Simplify initializing tests.
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* exceptions.cc (setup_handler): Detect when stub caller is either
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spinning or has acquired the lock after being suspended to avoid
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windows problems with suspending a win32 API call.
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* cygtls.h (_cygtls::spinning): Declare new element.
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* gendef: Remove unused _siglist_index and _siglist declaration.
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(_sigfe): Set spinning element when potentially looping, waiting for lock.
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(_sigbe): Ditto.
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(_cygtls::lock): Ditto.
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(_longjmp): Ditto.
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* tlsoffsets.h: Regenerate.
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* pinfo.cc (_pinfo::exit): Set final exit state here. Call sigproc_terminate if
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invoked with 'norecord'. Clear any residual _cygtls stuff.
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* winsup.h (exit_states): Define ES_FINAL.
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* spawn.cc (spawn_guts): Don't call proc_terminate specifically when
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execing. Let _pinfo::exit handle that case.
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* sigproc.cc (wait_subproc): Always exit loop early when proc_loop_wait.
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* init.cc (munge_threadfunc): Eliminate unused argument.
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(dll_entry): Reflect above change in call to munge_threadfunc.
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2004-02-11 Christopher Faylor <cgf@redhat.com>
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* gendef (_sigbe): Zero location on pop.
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@ -88,7 +116,7 @@
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(_sigbe): Ditto.
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(_threadinfo::lock): Ditto.
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(_threadinfo::pop): Eliminate left-over stack unlock.
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* sigproc.cc (proc_subproc): Chnage debugging output to printed
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* sigproc.cc (proc_subproc): Change debugging output to printed
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warning.
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2004-02-08 Christopher Faylor <cgf@redhat.com>
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@ -224,6 +224,7 @@ cygthread_CFLAGS:=-fomit-frame-pointer
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cygtls_CFLAGS:=-fomit-frame-pointer
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devices_CFLAGS:=-fomit-frame-pointer -Os
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dir_CFLAGS:=-fomit-frame-pointer
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dll_init_CFLAGS:=-fomit-frame-pointer
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fcntl_CFLAGS:=-fomit-frame-pointer
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fhandler_CFLAGS:=-fomit-frame-pointer
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fhandler_clipboard_CFLAGS:=-fomit-frame-pointer
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@ -346,7 +347,7 @@ uninstall-man:
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done
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clean:
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-rm -f *.o *.dll *.a *.exp junk *.base version.cc regexp/*.o winver_stamp *.exe *.d *stamp* *_magic.h
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-rm -f *.o *.dll *.a *.exp junk *.base version.cc regexp/*.o winver_stamp *.exe *.d *stamp* *_magic.h sigfe.s
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maintainer-clean realclean: clean
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@echo "This command is intended for maintainers to use;"
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@ -437,7 +438,9 @@ $(srcdir)/tlsoffsets.h: gentls_offsets cygtls.h
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$^ $@ $(COMPILE_CXX)
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sigfe.s: $(DEF_FILE)
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@touch $@
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@[ -s $@ ] || \
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{ rm -f $(DEF_FILE); $(MAKE) -s -j1 $(DEF_FILE); }; \
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[ -s $@ ] && touch $@
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sigfe.o: sigfe.s
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$(CC) -c -o $@ $?
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@ -112,6 +112,7 @@ struct _cygtls
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__stack_t *stackptr;
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int sig;
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unsigned stacklock;
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unsigned spinning;
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__stack_t stack[TLS_STACK_SIZE];
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unsigned padding[0];
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@ -23,7 +23,7 @@ extern void __stdcall check_sanity_and_sync (per_process *);
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dll_list NO_COPY dlls;
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static NO_COPY int in_forkee = 0;
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static int NO_COPY in_forkee;
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static int dll_global_dtors_recorded;
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/* Run destructors for all DLLs on exit. */
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@ -183,7 +183,7 @@ dll_list::alloc (HINSTANCE h, per_process *p, dll_type type)
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void
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dll_list::detach (void *retaddr)
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{
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if (!myself || myself->process_state == PID_EXITED)
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if (!myself || exit_state)
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return;
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MEMORY_BASIC_INFORMATION m;
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if (!VirtualQuery (retaddr, &m, sizeof m))
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@ -358,6 +358,7 @@ dll_dllcrt0 (HMODULE h, per_process *p)
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p = &__cygwin_user_data;
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else
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*(p->impure_ptr_ptr) = __cygwin_user_data.impure_ptr;
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bool initializing = in_forkee || cygwin_finished_initializing;
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/* Partially initialize Cygwin guts for non-cygwin apps. */
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if (dynamically_loaded && user_data->magic_biscuit == 0)
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@ -371,7 +372,7 @@ dll_dllcrt0 (HMODULE h, per_process *p)
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initializing, then the DLL must be a cygwin-aware DLL
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that was explicitly linked into the program rather than
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a dlopened DLL. */
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if (!in_forkee && !cygwin_finished_initializing)
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if (!initializing)
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type = DLL_LINK;
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else
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{
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@ -387,7 +388,7 @@ dll_dllcrt0 (HMODULE h, per_process *p)
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initialize the DLL. If we haven't finished initializing,
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it may not be safe to call the dll's "main" since not
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all of cygwin's internal structures may have been set up. */
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if (!d || ((in_forkee || cygwin_finished_initializing) && !d->init ()))
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if (!d || (initializing && !d->init ()))
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return -1;
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return (DWORD) d;
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@ -788,12 +788,12 @@ setup_handler (int sig, void *handler, struct sigaction& siga, _cygtls *tls)
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#endif
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res = SuspendThread (hth);
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/* Just set pending if thread is already suspended */
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if (res)
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if (res || tls->stackptr > tls->stack)
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{
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(void) ResumeThread (hth);
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break;
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}
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if (!tls->locked ())
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if (!tls->locked () && !tls->spinning)
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{
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cx.ContextFlags = CONTEXT_CONTROL | CONTEXT_INTEGER;
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if (!GetThreadContext (hth, &cx))
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@ -76,8 +76,6 @@ sub fefunc {
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my $fe = '_' . shift;
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my $extra;
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my $res = <<EOF;
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.extern _siglist_index
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.extern _siglist
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.extern $func
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.global $fe
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$fe:
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@ -96,6 +94,7 @@ __sigfe:
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1: movl %fs:4,%edx # location of bottom of stack
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movl \$1,%eax # potential lock value
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lock xchgl %eax,$tls::stacklock(%edx) # see if we can grab it
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movl %eax,$tls::spinning(%edx) # flag if we are waiting for lock
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orl %eax,%eax # it will be zero
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jz 2f # if so
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xorl %eax,%eax # nope. It was not zero
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@ -120,6 +119,7 @@ __sigbe:
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1: movl %fs:4,%edx # address of bottom of tls
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movl \$1,%eax # potential lock value
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lock xchgl %eax,$tls::stacklock(%edx) # see if we can grab it
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movl %eax,$tls::spinning(%edx) # flag if we are waiting for lock
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orl %eax,%eax # it will be zero
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jz 2f # if so
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xorl %eax,%eax # nope. not zero
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@ -242,6 +242,7 @@ _longjmp:
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1: movl %fs:4,%edx
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movl \$1,%eax
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lock xchgl %eax,$tls::stacklock(%edx)
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movl %eax,$tls::spinning(%edx) # flag if we are waiting for lock
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orl %eax,%eax
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jz 2f
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xorl %eax,%eax
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@ -56,7 +56,7 @@ prime_threads ()
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/* If possible, redirect the thread entry point to a cygwin routine which
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adds tls stuff to the stack. */
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static void
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munge_threadfunc (HANDLE cygwin_hmodule)
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munge_threadfunc ()
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{
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char **ebp = (char **) __builtin_frame_address (0);
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if (!threadfunc_ix)
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@ -67,7 +67,7 @@ munge_threadfunc (HANDLE cygwin_hmodule)
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threadfunc_ix = peb - ebp;
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goto foundit;
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}
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#ifdef DEBUGGING
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#ifdef DEBUGGING_HARD
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system_printf ("non-fatal warning: unknown thread! search_for %p, cygthread::stub %p, calibration_thread %p, possible func offset %p",
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search_for, cygthread::stub, calibration_thread, ebp[137]);
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#endif
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@ -102,7 +102,7 @@ dll_entry (HANDLE h, DWORD reason, void *static_load)
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case DLL_PROCESS_DETACH:
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break;
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case DLL_THREAD_ATTACH:
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munge_threadfunc (h);
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munge_threadfunc ();
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break;
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case DLL_THREAD_DETACH:
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_my_tls.remove (0);
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@ -31,6 +31,7 @@ details. */
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#include "cygheap.h"
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#include "fhandler.h"
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#include "cygmalloc.h"
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#include "cygtls.h"
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static char NO_COPY pinfo_dummy[sizeof (_pinfo)] = {0};
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@ -104,6 +105,10 @@ pinfo_init (char **envp, int envc)
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void
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_pinfo::exit (UINT n, bool norecord)
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{
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exit_state = ES_FINAL;
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cygthread::terminate ();
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if (norecord)
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sigproc_terminate ();
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if (this)
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{
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if (!norecord)
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@ -116,8 +121,9 @@ _pinfo::exit (UINT n, bool norecord)
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add_rusage (&rusage_self, &r);
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}
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cygthread::terminate ();
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sigproc_printf ("Calling ExitProcess %d", n);
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_my_tls.stacklock = 0;
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_my_tls.stackptr = _my_tls.stack;
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ExitProcess (n);
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}
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@ -70,26 +70,6 @@ static pending_signals sigqueue;
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struct sigaction *global_sigs;
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void __stdcall
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sigalloc ()
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{
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cygheap->sigs = global_sigs =
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(struct sigaction *) ccalloc (HEAP_SIGS, NSIG, sizeof (struct sigaction));
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}
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void __stdcall
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signal_fixup_after_exec ()
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{
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global_sigs = cygheap->sigs;
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/* Set up child's signal handlers */
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for (int i = 0; i < NSIG; i++)
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{
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global_sigs[i].sa_mask = 0;
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if (global_sigs[i].sa_handler != SIG_IGN)
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global_sigs[i].sa_handler = SIG_DFL;
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}
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}
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/*
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* Global variables
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*/
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@ -101,19 +81,15 @@ char NO_COPY myself_nowait_dummy[1] = {'0'};// Flag to sig_send that signal goes
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HANDLE NO_COPY signal_arrived; // Event signaled when a signal has
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// resulted in a user-specified
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// function call
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/*
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* Common variables
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*/
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/* How long to wait for message/signals. Normally this is infinite.
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* On termination, however, these are set to zero as a flag to exit.
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*/
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#define Static static NO_COPY
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/* How long to wait for message/signals. Normally this is infinite.
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On termination, however, these are set to zero as a flag to exit. */
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Static DWORD proc_loop_wait = 1000; // Wait for subprocesses to exit
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Static HANDLE sendsig_tome;
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||||
HANDLE NO_COPY sigCONT; // Used to "STOP" a process
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||||
Static cygthread *hwait_sig; // Handle of wait_sig thread
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Static cygthread *hwait_subproc; // Handle of sig_subproc thread
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||||
@ -149,6 +125,26 @@ static DWORD WINAPI wait_sig (VOID *arg);
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static int __stdcall stopped_or_terminated (waitq *, _pinfo *);
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static DWORD WINAPI wait_subproc (VOID *);
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||||
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||||
void __stdcall
|
||||
sigalloc ()
|
||||
{
|
||||
cygheap->sigs = global_sigs =
|
||||
(struct sigaction *) ccalloc (HEAP_SIGS, NSIG, sizeof (struct sigaction));
|
||||
}
|
||||
|
||||
void __stdcall
|
||||
signal_fixup_after_exec ()
|
||||
{
|
||||
global_sigs = cygheap->sigs;
|
||||
/* Set up child's signal handlers */
|
||||
for (int i = 0; i < NSIG; i++)
|
||||
{
|
||||
global_sigs[i].sa_mask = 0;
|
||||
if (global_sigs[i].sa_handler != SIG_IGN)
|
||||
global_sigs[i].sa_handler = SIG_DFL;
|
||||
}
|
||||
}
|
||||
|
||||
/* Determine if the parent process is alive.
|
||||
*/
|
||||
|
||||
@ -1215,17 +1211,13 @@ wait_subproc (VOID *)
|
||||
{
|
||||
DWORD rc = WaitForMultipleObjects (nchildren + 1, events, FALSE,
|
||||
proc_loop_wait);
|
||||
if (!proc_loop_wait)
|
||||
break;
|
||||
if (rc == WAIT_TIMEOUT)
|
||||
if (!proc_loop_wait)
|
||||
break; // Exiting
|
||||
else
|
||||
continue;
|
||||
continue;
|
||||
|
||||
if (rc == WAIT_FAILED)
|
||||
{
|
||||
if (!proc_loop_wait)
|
||||
break;
|
||||
|
||||
/* It's ok to get an ERROR_INVALID_HANDLE since another thread may have
|
||||
closed a handle in the children[] array. So, we try looping a couple
|
||||
of times to stabilize. FIXME - this is not foolproof. Probably, this
|
||||
@ -1274,8 +1266,6 @@ wait_subproc (VOID *)
|
||||
si.si_stime = 0;
|
||||
#endif
|
||||
rc = proc_subproc (PROC_CHILDTERMINATED, rc);
|
||||
if (!proc_loop_wait) // Don't bother if wait_subproc is
|
||||
break; // exiting
|
||||
|
||||
/* Send a SIGCHLD to myself. We do this here, rather than in proc_subproc
|
||||
to avoid the proc_subproc lock since the signal thread will eventually
|
||||
|
||||
@ -745,7 +745,7 @@ spawn_guts (const char * prog_arg, const char *const *argv,
|
||||
(void) sigprocmask (SIG_BLOCK, &child_block, &cleanup.oldmask);
|
||||
}
|
||||
|
||||
/* Fixup the parent datastructure if needed and resume the child's
|
||||
/* Fixup the parent data structures if needed and resume the child's
|
||||
main thread. */
|
||||
if (!cygheap->fdtab.need_fixup_before ())
|
||||
cygheap_setup_for_child_cleanup (newheap, &ciresrv, 0);
|
||||
@ -908,7 +908,6 @@ spawn_guts (const char * prog_arg, const char *const *argv,
|
||||
{
|
||||
case _P_OVERLAY:
|
||||
ForceCloseHandle1 (pi.hProcess, childhProc);
|
||||
proc_terminate ();
|
||||
myself->exit (res, 1);
|
||||
break;
|
||||
case _P_WAIT:
|
||||
|
||||
@ -1,96 +1,100 @@
|
||||
//;# autogenerated: Do not edit.
|
||||
|
||||
//; $tls::func = -3740;
|
||||
//; $tls::func = -3744;
|
||||
//; $tls::pfunc = 0;
|
||||
//; $tls::saved_errno = -3736;
|
||||
//; $tls::saved_errno = -3740;
|
||||
//; $tls::psaved_errno = 4;
|
||||
//; $tls::sa_flags = -3732;
|
||||
//; $tls::sa_flags = -3736;
|
||||
//; $tls::psa_flags = 8;
|
||||
//; $tls::oldmask = -3728;
|
||||
//; $tls::oldmask = -3732;
|
||||
//; $tls::poldmask = 12;
|
||||
//; $tls::newmask = -3724;
|
||||
//; $tls::newmask = -3728;
|
||||
//; $tls::pnewmask = 16;
|
||||
//; $tls::event = -3720;
|
||||
//; $tls::event = -3724;
|
||||
//; $tls::pevent = 20;
|
||||
//; $tls::errno_addr = -3716;
|
||||
//; $tls::errno_addr = -3720;
|
||||
//; $tls::perrno_addr = 24;
|
||||
//; $tls::initialized = -3712;
|
||||
//; $tls::initialized = -3716;
|
||||
//; $tls::pinitialized = 28;
|
||||
//; $tls::sigmask = -3708;
|
||||
//; $tls::sigmask = -3712;
|
||||
//; $tls::psigmask = 32;
|
||||
//; $tls::sigwait_mask = -3704;
|
||||
//; $tls::sigwait_mask = -3708;
|
||||
//; $tls::psigwait_mask = 36;
|
||||
//; $tls::sigwait_info = -3700;
|
||||
//; $tls::sigwait_info = -3704;
|
||||
//; $tls::psigwait_info = 40;
|
||||
//; $tls::threadkill = -3696;
|
||||
//; $tls::threadkill = -3700;
|
||||
//; $tls::pthreadkill = 44;
|
||||
//; $tls::infodata = -3692;
|
||||
//; $tls::infodata = -3696;
|
||||
//; $tls::pinfodata = 48;
|
||||
//; $tls::tid = -3544;
|
||||
//; $tls::tid = -3548;
|
||||
//; $tls::ptid = 196;
|
||||
//; $tls::local_clib = -3540;
|
||||
//; $tls::local_clib = -3544;
|
||||
//; $tls::plocal_clib = 200;
|
||||
//; $tls::locals = -2612;
|
||||
//; $tls::locals = -2616;
|
||||
//; $tls::plocals = 1128;
|
||||
//; $tls::prev = -1044;
|
||||
//; $tls::prev = -1048;
|
||||
//; $tls::pprev = 2696;
|
||||
//; $tls::next = -1040;
|
||||
//; $tls::next = -1044;
|
||||
//; $tls::pnext = 2700;
|
||||
//; $tls::stackptr = -1036;
|
||||
//; $tls::stackptr = -1040;
|
||||
//; $tls::pstackptr = 2704;
|
||||
//; $tls::sig = -1032;
|
||||
//; $tls::sig = -1036;
|
||||
//; $tls::psig = 2708;
|
||||
//; $tls::stacklock = -1028;
|
||||
//; $tls::stacklock = -1032;
|
||||
//; $tls::pstacklock = 2712;
|
||||
//; $tls::spinning = -1028;
|
||||
//; $tls::pspinning = 2716;
|
||||
//; $tls::stack = -1024;
|
||||
//; $tls::pstack = 2716;
|
||||
//; $tls::pstack = 2720;
|
||||
//; $tls::padding = 0;
|
||||
//; $tls::ppadding = 3740;
|
||||
//; $tls::ppadding = 3744;
|
||||
//; __DATA__
|
||||
|
||||
#define tls_func (-3740)
|
||||
#define tls_func (-3744)
|
||||
#define tls_pfunc (0)
|
||||
#define tls_saved_errno (-3736)
|
||||
#define tls_saved_errno (-3740)
|
||||
#define tls_psaved_errno (4)
|
||||
#define tls_sa_flags (-3732)
|
||||
#define tls_sa_flags (-3736)
|
||||
#define tls_psa_flags (8)
|
||||
#define tls_oldmask (-3728)
|
||||
#define tls_oldmask (-3732)
|
||||
#define tls_poldmask (12)
|
||||
#define tls_newmask (-3724)
|
||||
#define tls_newmask (-3728)
|
||||
#define tls_pnewmask (16)
|
||||
#define tls_event (-3720)
|
||||
#define tls_event (-3724)
|
||||
#define tls_pevent (20)
|
||||
#define tls_errno_addr (-3716)
|
||||
#define tls_errno_addr (-3720)
|
||||
#define tls_perrno_addr (24)
|
||||
#define tls_initialized (-3712)
|
||||
#define tls_initialized (-3716)
|
||||
#define tls_pinitialized (28)
|
||||
#define tls_sigmask (-3708)
|
||||
#define tls_sigmask (-3712)
|
||||
#define tls_psigmask (32)
|
||||
#define tls_sigwait_mask (-3704)
|
||||
#define tls_sigwait_mask (-3708)
|
||||
#define tls_psigwait_mask (36)
|
||||
#define tls_sigwait_info (-3700)
|
||||
#define tls_sigwait_info (-3704)
|
||||
#define tls_psigwait_info (40)
|
||||
#define tls_threadkill (-3696)
|
||||
#define tls_threadkill (-3700)
|
||||
#define tls_pthreadkill (44)
|
||||
#define tls_infodata (-3692)
|
||||
#define tls_infodata (-3696)
|
||||
#define tls_pinfodata (48)
|
||||
#define tls_tid (-3544)
|
||||
#define tls_tid (-3548)
|
||||
#define tls_ptid (196)
|
||||
#define tls_local_clib (-3540)
|
||||
#define tls_local_clib (-3544)
|
||||
#define tls_plocal_clib (200)
|
||||
#define tls_locals (-2612)
|
||||
#define tls_locals (-2616)
|
||||
#define tls_plocals (1128)
|
||||
#define tls_prev (-1044)
|
||||
#define tls_prev (-1048)
|
||||
#define tls_pprev (2696)
|
||||
#define tls_next (-1040)
|
||||
#define tls_next (-1044)
|
||||
#define tls_pnext (2700)
|
||||
#define tls_stackptr (-1036)
|
||||
#define tls_stackptr (-1040)
|
||||
#define tls_pstackptr (2704)
|
||||
#define tls_sig (-1032)
|
||||
#define tls_sig (-1036)
|
||||
#define tls_psig (2708)
|
||||
#define tls_stacklock (-1028)
|
||||
#define tls_stacklock (-1032)
|
||||
#define tls_pstacklock (2712)
|
||||
#define tls_spinning (-1028)
|
||||
#define tls_pspinning (2716)
|
||||
#define tls_stack (-1024)
|
||||
#define tls_pstack (2716)
|
||||
#define tls_pstack (2720)
|
||||
#define tls_padding (0)
|
||||
#define tls_ppadding (3740)
|
||||
#define tls_ppadding (3744)
|
||||
|
||||
@ -197,7 +197,8 @@ enum exit_states
|
||||
ES_TITLE,
|
||||
ES_HUP_PGRP,
|
||||
ES_HUP_SID,
|
||||
ES_TTY_TERMINATE
|
||||
ES_TTY_TERMINATE,
|
||||
ES_FINAL
|
||||
};
|
||||
|
||||
extern exit_states exit_state;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user