8f0c527e13
* hurd/hurd-raise.c (_hurd_raise_signal): Pass sigcode in msg_sig_post rpc. * hurd/hurdmsg.c (_S_msg_set_environment): Use argz.h functions instead of _hurd_split_args. (_S_msg_*_exec_flags): Functions removed. (_S_msg_startup_dosync): Stub removed. Sat May 4 02:11:55 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * sysdeps/mach/hurd/ptrace.c: Set _hurdsig_traced instead of EXEC_TRACED bit in _hurd_exec_flags. Pass sigcode arg in msg_sig_post_untraced rpc. * sysdeps/mach/hurd/access.c: Don't pass io port in auth_user_authenticate rpc. * posix/sched.h: Fix typos. * sysdeps/mach/hurd/fork.c: Use new critical section lock. Clear _hurdsig_traced instead of EXEC_TRACED. * sysdeps/stub/nanosleep.c (nanosleep): Fix typo. * wcsmbs/wcstol.c: Find strtol.c in ../stdlib. * wcsmbs/wcstof.c: Find strtod.c in ../stdlib. * wcsmbs/wcstod.c: Likewise. * wcsmbs/wcstold.c: Likewise. * wcsmbs/wcwidth.h: Find cname-lookup.h in ../wctype. * string/envz.c (envz_entry): Use const. (envz_get, envz_remove): Likewise. (envz_entry): Return char *, not const char *. * string/envz.h: Fix decl. * string/argz-create.c: Use const in prototype. * string/argz-next.c: Likewise. * sysdeps/mach/hurd/sigprocmask.c: Pass sigcode arg to msg_sig_post. * sysdeps/mach/hurd/i386/sigreturn.c: Likewise. * sysdeps/mach/hurd/sigsuspend.c: Likewise. * sysdeps/mach/hurd/kill.c: Likewise. * hurd/hurdexec.c (_hurd_exec): Use new critical section lock. * hurd/catch-exc.c (_S_catch_exception_raise): Likewise. * hurd/sigunwind.c (_hurdsig_longjmp_from_handler): Likewise. * hurd/thread-cancel.c (hurd_thread_cancel, hurd_check_cancel): Likewise. * sysdeps/mach/hurd/jmp-unwind.c (_longjmp_unwind): Likewise. * sysdeps/mach/hurd/sigaction.c: Likewise. * sysdeps/mach/hurd/errnos.awk: Don't use ARGV in comment; it can change meaninglessly. * hurd/hurd/signal.h (struct hurd_sigstate): Replace critical section flag with a spin lock. (_hurd_critical_section_lock): Use spin_try_lock on that to see if we get it. No need to take SS->lock at all. (_hurd_critical_section_unlock): Unlock SS->critical_section_lock instead of clearing the old flag member. * hurd/hurdsig.c (_hurd_internal_post_signal): Use spin_lock_locked to test the critical section state. * hurd/hurdinit.c (_hurd_init): Set _hurdsig_traced from the intarray. * hurd/hurdkill.c (_hurd_sig_post): Pass 0 sigcode in msg_sig_post. * hurd/hurdsig.c (_hurd_internal_post_signal): Test _hurdsig_traced instead of testing (_hurd_exec_flags & EXEC_TRACED). (_S_msg_sig_post): Take sigcode arg and pass it through. (_S_msg_sig_post_untraced): Likewise. (reauth_proc): Don't pass proc port in auth_user_authenticate. * hurd/setauth.c (_hurd_setauth): Don't pass object ports in auth_user_authenticate RPCs, just the one-off rendezvous port. * hurd/dtable.c (reauth_dtable): Likewise. * hurd/hurdlookup.c (__hurd_file_name_lookup_retry): Likewise. * hurd/hurdexec.c (_hurd_exec): Pass 0 flags to file_exec. Pass sigcode arg to msg_sig_post. * string/argz.h (argz_create): Use const in prototype. * hurd/hurdinit.c (_hurd_proc_init): Test _hurdsig_traced instead of testing (_hurd_exec_flags & EXEC_TRACED). Pass sigcode arg to msg_sig_post. * hurd/hurd.h: Declare _hurdsig_traced. * string/argz.h (__argz_next): Cast ENTRY before returning it. * hurd/hurd/signal.h (_hurd_critical_section_unlock): Pass sigcode arg to msg_sig_post. * hurd/path-lookup.c: New file. * hurd/Makefile (routines): Add path-lookup. * hurd/hurd/lookup.h: Declare file_name_path_scan, hurd_file_name_path_lookup. * hurd/hurd.h: Declare file_name_path_lookup. * sysdeps/mach/hurd/select.c: The io_select rpc no longer has a TAG_ID argument. Instead, use a separate reply port for each RPC and put them all in a port set to wait for slow replies.
72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
/* _longjmp_unwind -- Clean up stack frames unwound by longjmp. Hurd version.
|
|
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <setjmp.h>
|
|
#include <hurd/userlink.h>
|
|
#include <hurd/signal.h>
|
|
#include <hurd/sigpreempt.h>
|
|
#include <assert.h>
|
|
|
|
|
|
#ifndef _JMPBUF_UNWINDS
|
|
#error "sysdeps/MACHINE/jmp_buf.h fails to define _JMPBUF_UNWINDS"
|
|
#endif
|
|
|
|
/* This function is called by `longjmp' (with its arguments) to restore
|
|
active resources to a sane state before the frames code using them are
|
|
jumped out of. */
|
|
|
|
void
|
|
_longjmp_unwind (jmp_buf env, int val)
|
|
{
|
|
struct hurd_sigstate *ss = _hurd_self_sigstate ();
|
|
struct hurd_userlink *link;
|
|
|
|
/* All access to SS->active_resources must take place inside a critical
|
|
section where signal handlers cannot run. */
|
|
__spin_lock (&ss->lock);
|
|
assert (! __spin_lock_locked (&ss->critical_section_lock));
|
|
__spin_lock (&ss->critical_section_lock);
|
|
|
|
/* Remove local signal preempters being unwound past. */
|
|
while (ss->preempters &&
|
|
_JMPBUF_UNWINDS (env[0].__jmpbuf, ss->preempters))
|
|
ss->preempters = ss->preempters->next;
|
|
|
|
__spin_unlock (&ss->critical_section_lock);
|
|
__spin_unlock (&ss->lock);
|
|
|
|
/* Iterate over the current thread's list of active resources.
|
|
Process the head portion of the list whose links reside
|
|
in stack frames being unwound by this jump. */
|
|
|
|
for (link = ss->active_resources;
|
|
link && _JMPBUF_UNWINDS (env[0].__jmpbuf, link);
|
|
link = link->thread.next)
|
|
/* Remove this link from the resource's users list,
|
|
since the frame using the resource is being unwound.
|
|
This call returns nonzero if that was the last user. */
|
|
if (_hurd_userlink_unlink (link))
|
|
/* One of the frames being unwound by the longjmp was the last user
|
|
of its resource. Call the cleanup function to deallocate it. */
|
|
(*link->cleanup) (link->cleanup_data, env, val);
|
|
|
|
_hurd_critical_section_unlock (ss);
|
|
}
|