diff options
Diffstat (limited to 'nptl')
| -rw-r--r-- | nptl/ChangeLog | 18 | ||||
| -rw-r--r-- | nptl/Makefile | 5 | ||||
| -rw-r--r-- | nptl/pthreadP.h | 3 | ||||
| -rw-r--r-- | nptl/pthread_cancel.c | 3 | ||||
| -rw-r--r-- | nptl/sysdeps/pthread/Makefile | 7 | ||||
| -rw-r--r-- | nptl/sysdeps/pthread/createthread.c | 6 | ||||
| -rw-r--r-- | nptl/sysdeps/pthread/rt-unwind-resume.c | 1 | ||||
| -rw-r--r-- | nptl/sysdeps/pthread/unwind-resume.c | 64 | ||||
| -rw-r--r-- | nptl/unwind-forcedunwind.c | 93 |
9 files changed, 194 insertions, 6 deletions
diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 8d36515b7c..00f9062f1f 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,5 +1,23 @@ 2003-07-22 Jakub Jelinek <jakub@redhat.com> + * sysdeps/pthread/unwind-resume.c: New file. + * sysdeps/pthread/Makefile (routines, shared-only-routines): Add + unwind-resume in csu subdir. + (CFLAGS-unwind-resume.c, CFLAGS-rt-unwind-resume.c): Compile with + exceptions. + (librt-sysdep_routines, librt-shared-only-routines): Add + rt-unwind-resume. + * sysdeps/pthread/rt-unwind-resume.c: New file. + * unwind-forcedunwind.c: New file. + * Makefile (libpthread-routines): Add unwind-forcedunwind. + (libpthread-shared-only-routines): Likewise. + (CFLAGS-unwind-forcedunwind.c): Compile with exceptions. + * pthreadP.h (pthread_cancel_init): New prototype. + * pthread_cancel.c (pthread_cancel): Call pthread_cancel_init. + + * sysdeps/pthread/createthread.c (do_thread, create_thread): Make + attr argument const struct pthread_attr *. + * res.c (__res_state): Return __resp. * descr.h: Include resolv.h. (struct pthread): Add res field. diff --git a/nptl/Makefile b/nptl/Makefile index 6cf30c440f..f40ec8d554 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -118,9 +118,9 @@ libpthread-routines = init events version \ pthread_kill_other_threads \ pthread_getaffinity pthread_setaffinity \ pthread_attr_getaffinity pthread_attr_setaffinity \ - cleanup_routine + cleanup_routine unwind-forcedunwind -libpthread-shared-only-routines = version pt-allocrtsig +libpthread-shared-only-routines = version pt-allocrtsig unwind-forcedunwind libpthread-static-only-routines = pthread_atfork libpthread-nonshared = pthread_atfork @@ -135,6 +135,7 @@ CFLAGS-pthread_atfork.c = -DNOT_IN_libc CFLAGS-init.c = -fexceptions -fasynchronous-unwind-tables # The unwind code itself, CFLAGS-unwind.c = -fexceptions +CFLAGS-unwind-forcedunwind.c = -fexceptions -fasynchronous-unwind-tables # The following three functions must be async-cancel safe. CFLAGS-pthread_cancel.c = -fexceptions -fasynchronous-unwind-tables diff --git a/nptl/pthreadP.h b/nptl/pthreadP.h index 30983216c8..a8cefabc4c 100644 --- a/nptl/pthreadP.h +++ b/nptl/pthreadP.h @@ -129,6 +129,9 @@ hidden_proto (__pthread_unwind) hidden_proto (__pthread_unwind_next) hidden_proto (__pthread_register_cancel) hidden_proto (__pthread_unregister_cancel) +# ifdef SHARED +extern void attribute_hidden pthread_cancel_init (void); +# endif #endif diff --git a/nptl/pthread_cancel.c b/nptl/pthread_cancel.c index 9e3dfda6b3..1523da82aa 100644 --- a/nptl/pthread_cancel.c +++ b/nptl/pthread_cancel.c @@ -36,6 +36,9 @@ pthread_cancel (th) /* Not a valid thread handle. */ return ESRCH; +#ifdef SHARED + pthread_cancel_init (); +#endif int result = 0; int oldval; int newval; diff --git a/nptl/sysdeps/pthread/Makefile b/nptl/sysdeps/pthread/Makefile index 58cfbb38ef..aac94065eb 100644 --- a/nptl/sysdeps/pthread/Makefile +++ b/nptl/sysdeps/pthread/Makefile @@ -19,6 +19,9 @@ ifeq ($(subdir),csu) CFLAGS-libc-start.c += -I../nptl +routines += unwind-resume +shared-only-routines += unwind-resume +CFLAGS-unwind-resume.c += -fexceptions -fasynchronous-unwind-tables endif ifeq ($(subdir),nptl) @@ -26,9 +29,11 @@ libpthread-sysdep_routines += errno-loc endif ifeq ($(subdir),rt) -librt-sysdep_routines += timer_routines librt-cancellation +librt-sysdep_routines += timer_routines librt-cancellation rt-unwind-resume +librt-shared-only-routines += rt-unwind-resume CPPFLAGS-timer_routines.c = -I../nptl CFLAGS-librt-cancellation.c += -fexceptions -fasynchronous-unwind-tables +CFLAGS-rt-unwind-resume.c += -fexceptions -fasynchronous-unwind-tables ifeq (yes,$(build-shared)) $(objpfx)tst-timer: $(objpfx)librt.so $(shared-thread-library) diff --git a/nptl/sysdeps/pthread/createthread.c b/nptl/sysdeps/pthread/createthread.c index 6e8f5cda90..5aa0d89f90 100644 --- a/nptl/sysdeps/pthread/createthread.c +++ b/nptl/sysdeps/pthread/createthread.c @@ -48,8 +48,8 @@ int *__libc_multiple_threads_ptr attribute_hidden; static int -do_clone (struct pthread *pd, struct pthread_attr *attr, int clone_flags, - int (*fct) (void *), STACK_VARIABLES_PARMS) +do_clone (struct pthread *pd, const struct pthread_attr *attr, + int clone_flags, int (*fct) (void *), STACK_VARIABLES_PARMS) { #ifdef PREPARE_CREATE PREPARE_CREATE; @@ -121,7 +121,7 @@ do_clone (struct pthread *pd, struct pthread_attr *attr, int clone_flags, static int -create_thread (struct pthread *pd, struct pthread_attr *attr, +create_thread (struct pthread *pd, const struct pthread_attr *attr, STACK_VARIABLES_PARMS) { #ifdef TLS_TCB_AT_TP diff --git a/nptl/sysdeps/pthread/rt-unwind-resume.c b/nptl/sysdeps/pthread/rt-unwind-resume.c new file mode 100644 index 0000000000..743e675d4d --- /dev/null +++ b/nptl/sysdeps/pthread/rt-unwind-resume.c @@ -0,0 +1 @@ +#include <unwind-resume.c> diff --git a/nptl/sysdeps/pthread/unwind-resume.c b/nptl/sysdeps/pthread/unwind-resume.c new file mode 100644 index 0000000000..088f4c6f6c --- /dev/null +++ b/nptl/sysdeps/pthread/unwind-resume.c @@ -0,0 +1,64 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <dlfcn.h> +#include <stdio.h> +#include <unwind.h> + +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc); +static _Unwind_Reason_Code (*libgcc_s_personality) + (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *, + struct _Unwind_Context *); + +static void +init (void) +{ + void *resume, *personality; + void *handle; + + handle = __libc_dlopen ("libgcc_s.so.1"); + + if (handle == NULL + || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL + || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL) + __libc_fatal ("libgcc_s.so.1 must be installed for pthread_cancel to work\n"); + + libgcc_s_resume = resume; + libgcc_s_personality = personality; +} + +void +_Unwind_Resume (struct _Unwind_Exception *exc) +{ + if (__builtin_expect (libgcc_s_resume == NULL, 0)) + init (); + libgcc_s_resume (exc); +} + +_Unwind_Reason_Code +__gcc_personality_v0 (int version, _Unwind_Action actions, + _Unwind_Exception_Class exception_class, + struct _Unwind_Exception *ue_header, + struct _Unwind_Context *context) +{ + if (__builtin_expect (libgcc_s_personality == NULL, 0)) + init (); + return libgcc_s_personality (version, actions, exception_class, + ue_header, context); +} diff --git a/nptl/unwind-forcedunwind.c b/nptl/unwind-forcedunwind.c new file mode 100644 index 0000000000..9c10932a31 --- /dev/null +++ b/nptl/unwind-forcedunwind.c @@ -0,0 +1,93 @@ +/* Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <dlfcn.h> +#include <stdio.h> +#include <unwind.h> +#include <pthreadP.h> + +static void (*libgcc_s_resume) (struct _Unwind_Exception *exc); +static _Unwind_Reason_Code (*libgcc_s_personality) + (int, _Unwind_Action, _Unwind_Exception_Class, struct _Unwind_Exception *, + struct _Unwind_Context *); +static _Unwind_Reason_Code (*libgcc_s_forcedunwind) + (struct _Unwind_Exception *, _Unwind_Stop_Fn, void *); +static _Unwind_Word (*libgcc_s_getcfa) (struct _Unwind_Context *); + +void +pthread_cancel_init (void) +{ + void *resume, *personality, *forcedunwind, *getcfa; + void *handle; + + if (__builtin_expect (libgcc_s_getcfa != NULL, 1)) + return; + + handle = __libc_dlopen ("libgcc_s.so.1"); + + if (handle == NULL + || (resume = __libc_dlsym (handle, "_Unwind_Resume")) == NULL + || (personality = __libc_dlsym (handle, "__gcc_personality_v0")) == NULL + || (forcedunwind = __libc_dlsym (handle, "_Unwind_ForcedUnwind")) + == NULL + || (getcfa = __libc_dlsym (handle, "_Unwind_GetCFA")) == NULL) + __libc_fatal ("libgcc_s.so.1 must be installed for pthread_cancel to work\n"); + + libgcc_s_resume = resume; + libgcc_s_personality = personality; + libgcc_s_forcedunwind = forcedunwind; + libgcc_s_getcfa = getcfa; +} + +void +_Unwind_Resume (struct _Unwind_Exception *exc) +{ + if (__builtin_expect (libgcc_s_resume == NULL, 0)) + pthread_cancel_init (); + libgcc_s_resume (exc); +} + +_Unwind_Reason_Code +__gcc_personality_v0 (int version, _Unwind_Action actions, + _Unwind_Exception_Class exception_class, + struct _Unwind_Exception *ue_header, + struct _Unwind_Context *context) +{ + if (__builtin_expect (libgcc_s_personality == NULL, 0)) + pthread_cancel_init (); + return libgcc_s_personality (version, actions, exception_class, + ue_header, context); +} + +_Unwind_Reason_Code +_Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop, + void *stop_argument) +{ + if (__builtin_expect (libgcc_s_forcedunwind == NULL, 0)) + pthread_cancel_init (); + return libgcc_s_forcedunwind (exc, stop, stop_argument); +} + +_Unwind_Word +_Unwind_GetCFA (struct _Unwind_Context *context) +{ + if (__builtin_expect (libgcc_s_getcfa == NULL, 0)) + pthread_cancel_init (); + return libgcc_s_getcfa (context); +} |