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1997-05-21 02:49 Ulrich Drepper <drepper@cygnus.com> * gnu-versions.h (_GNU_OBSTACK_INTERFACE_VERSION): Set to 2 since interface was changed with addition of _obstack_memory_used. Suggested by Ian Taylor <ian@cygnus.com>. * malloc/obstack.c: Include <config.h>. Include <stdlib.h> only if __GNU_LIBRARY__ or HAVE_STDLIB_H is defined. Reported by Ian Taylor <ian@cygnus.com>. * dirent/Makefile (routines): Add versionsort. * dirent/dirent.h: Add prototype for versionsort. * dirent/versionsort.c: New file. * manual/filesys.texi: Add documentation for versionsort. * manual/string.texi: Add documentation for strverscmp. * string/Makefile (routines): Add strverscmp. (tests): Add tst-svc. * string/string.h: Add prototype for strverscmp. * string/strverscmp.c: New file. * string/tst-svc.c: New file. Test for strverscmp. * string/tst-svc.input: New file. Input data for tst-svc. * string/tst-svc.expect: New file. Expected out from tst-svc. * math/Makefile (calls): Add s_signbit. * po/sv.po: Update. * resolv/nss_dns/dns-host.c: Add casts to prevent warnings. * sunrpc/pmap_rmt.c: Likewise. * string/basename.c: Don't use ISO C definition style. Include <config.h> is HAVE_CONFIG_H is defined. * sunrpc/proto.h: Add `const' wherever possible. * sunrpc/rpc_cout.c: Likewise. * sunrpc/rpc_svcout.c: Likewise. * sunrpc/xdr_mem.c: Likewise. * sunrpc/xdr_rec.c: Likewise. * sunrpc/xdr_stdio.c: Likewise. * sunrpc/rpc_parse.c: Delete comma from end of enum definition. * sunrpc/xdr.c: Little code cleanups. * sunrpc/xdr_flaot.c: Likewise. Patches by Matthew Wilcox <matthew.wilcox@chbs.mhs.ciba.com>. * sysdeps/i386/fpu/__math.h (__finite): Fix typo. * sysdeps/unix/sysv/linux/shmdt.c: Add cast to prevent warning. * time/europe: Update from tzdata1997f. * time/zic.c: Update from tzcode1997e. 1997-05-20 19:20 Miguel de Icaza <miguel@athena.nuclecu.unam.mx> * sysdeps/sparc/setjmp.S: Flush windows. Bug found by Richard Henderson. 1997-05-19 12:54 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * misc/efgcvt_r.c (fcvt_r, ecvt_r): Rewritten as to fit the specs. 1997-05-19 18:41 Thorsten Kukuk <kukuk@uni-paderborn.de> * nis/nss_nisplus/nisplus-spwd.c (_nss_nisplus_parse_spent): Use atol instead of atoi. 1997-05-18 00:22 Philip Blundell <pjb27@cam.ac.uk> * inet/Makefile (routines): Add if_index. * sysdeps/unix/sysv/linux/if_index.c: New file. * sysdeps/stub/if_index.c: New file. * sysdeps/unix/sysv/linux/net/if.h: Add prototypes for routines in if_index.c (required by IPv6 basic API). * sysdeps/unix/sysv/linux/netinet/in.h: Add struct ipv6_pktinfo. 1997-05-17 23:29 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/unix/sysv/linux/netinet/in.h: Update IPv6 definitions for new advanced API draft. 1997-05-13 21:33 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * stdio-common/printf_fp.c: Only use the field width for deciding on padding when printing special values. * stdio-common/printf_fphex.c: Likewise. 1997-05-15 13:14 Miles Bader <miles@gnu.ai.mit.edu> Changes by Thomas Bushnell <thomas@gnu.ai.mit.edu>: * hurd/hurdauth.c (_S_msg_add_auth): Implement correctly. 1997-05-12 14:50 Thomas Bushnell, n/BSG <thomas@gnu.ai.mit.edu> * hurd/hurdsig.c (_hurdsig_init): Double size of sigthread stack; msg_add_auth was overflowing it. 1997-05-12 21:20 Richard Henderson <rth@tamu.edu> * elf/dl-lookup.c (_dl_lookup_symbol_skip): Call _dl_signal_error when we can't find the symbol. 1997-05-12 16:54 Ulrich Drepper <drepper@cygnus.com> * posix/regex.c: Fix handling of 32-bit Windog environments. Patch by Arnold Robbins <arnold@skeeve.atl.ga.us>. 1997-05-10 23:26 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/m68k/syscalls.list: Add cacheflush. 1997-05-10 11:40 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/ldd.bash.in: Remove spurious quote character from version message. 1997-05-10 08:49 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * locale/programs/locale.c (write_charmaps): Don't get stuck in a loop if the file ends in a long line without newline. * locale/programs/charmap.c (charmap_read): Likewise. 1997-05-12 03:47 Ulrich Drepper <drepper@cygnus.com> * sunrpc/rpc/xdr.h: Include more headers to be self-contained. * sunrpc/rpc/svc_auth.h: Likewise. * sunrpc/rpc/svc.h: Likewise. * sunrpc/rpc/rpc_msg.h: Likewise. * sunrpc/rpc/pmap_rmt.h: Likewise. * sunrpc/rpc/pmap_clnt.h: Likewise. * sunrpc/rpc/clnt.h: Likewise. * sunrpc/rpc/auth_unix.h: Likewise. * sysdeps/generic/rpc/auth.h: Likewise. Patches by Michael Deutschmann <ldeutsch@mail.netshop.net>. 1997-05-11 15:29 Philip Blundell <pjb27@cam.ac.uk> * sysdeps/stub/sigaction.c (__sigaction): Correct typo. * sysdeps/standalone/arm/errnos.h: New file. * sysdeps/stub/sys/param.h: Add dummy definition of MAXSYMLINKS. * sysdeps/unix/arm/fork.S: New file. * sysdeps/unix/sysv/linux/arm/sysdep.h: New file. * sysdeps/stub/tempname.c (__stdio_gen_tempname): Add missing `streamptr' argument. * sysdeps/stub/vdprintf.c: Remove second copy of file (!), include <stdarg.h> to get va_list defined, return 0 not NULL. * sysdeps/unix/sysv/linux/statfsbuf.h: Include <gnu/types.h>. * sysdeps/unix/sysv/linux/arm/syscall.S: New file. * sysdeps/stub/direntry.h (struct dirent): Add missing ';'. * sysdeps/stub/seekdir.c (seekdir): Likewise. * sysdeps/stub/dirfd.c (dirfd): Argument dirp is DIR*, not FILE*. * sysdeps/standalone/dirstream.h: Define struct __dirstream not DIR; <dirent.h> provides typedef. * sysdeps/unix/sysv/linux/arm/clone.S: New file. * sysdeps/unix/sysv/linux/arm/socket.S: New file. * sysdeps/stub/sysconf.c (__sysconf): Fix typos. 1997-05-01 06:35 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/Dist: New file. * sysdeps/powerpc/Makefile: New file. * sysdeps/powerpc/fclrexcpt.c: New file. * sysdeps/powerpc/fegetenv.c: New file. * sysdeps/powerpc/fegetround.c: New file. * sysdeps/powerpc/feholdexcpt.c: New file. * sysdeps/powerpc/fenvbits.h: New file. * sysdeps/powerpc/fenv_const.c: New file. * sysdeps/powerpc/fenv_libc.h: New file. * sysdeps/powerpc/fesetenv.c: New file. * sysdeps/powerpc/fesetround.c: New file. * sysdeps/powerpc/feupdateenv.c: New file. * sysdeps/powerpc/fgetexcptflg.c: New file. * sysdeps/powerpc/fraiseexcpt.c: New file. * sysdeps/powerpc/fsetexcptflg.c: New file. * sysdeps/powerpc/ftestexcept.c: New file. * sysdeps/powerpc/mathbits.h: New file. * sysdeps/powerpc/dl-machine.h: Wrap in #ifndef dl_machine_h; define elf_machine_lookup_noexec_p, elf_machine_lookup_noplt_p, ELF_MACHINE_RELOC_NOPLT; consequent changes to elf_machine_rela. * sysdeps/powerpc/__math.h: Remove definition for hypot and __sgn. * sysdep/powerpc/fpu_control.h: Correct IEEE default mode. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Don't use .text, but instead .section ".text". 1997-04-25 05:06 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/__longjmp.S: Use symbolic register numbering. * sysdeps/powerpc/bsd-_setjmp.S: Likewise. * sysdeps/powerpc/bsd-setjmp.S: Likewise. * sysdeps/powerpc/setjmp.S: Likewise. * sysdeps/unix/sysv/linux/clone.S: Likewise. * sysdeps/unix/sysv/linux/socket.S: Likewise. * sysdeps/unix/sysv/linux/syscall.S: Likewise. 1997-04-20 04:37 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/strchr.s: New file. * sysdeps/powerpc/strcmp.s: New (ugly) file. * sysdeps/powerpc/memset.s: New file. * string/tester.c: Include prototype and _GNU_SOURCE to make standalone compilation possible. Give strcmp a better test. Give memset a better test. 1997-04-05 06:34 Geoff Keating <geoffk@ozemail.com.au> * sysdeps/powerpc/strlen.s: Fixed bugs (how did it ever pass its tests before?). Changed to symbolic register numbering as an experiment. * sysdeps/powerpc/ffs.c: Don't include bstring.h, it doesn't exist. * sysdeps/rs6000/ffs.c: Likewise. 1997-05-12 02:28 Ulrich Drepper <drepper@cygnus.com> * time/sys/time.h: Make second argument of setitimer const. Patch by Michael Deutschmann <ldeutsch@mail.netshop.net>. * sysdeps/stub/setitimer.c: Likewise. * sysdeps/mach/hurd/setitimer.c: Likewise.
354 lines
11 KiB
C
354 lines
11 KiB
C
/* Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <stddef.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <hurd.h>
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#include <hurd/signal.h>
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#include <hurd/sigpreempt.h>
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#include <hurd/msg_request.h>
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#include <mach/message.h>
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/* XXX Temporary cheezoid implementation of ITIMER_REAL/SIGALRM. */
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spin_lock_t _hurd_itimer_lock = SPIN_LOCK_INITIALIZER;
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struct itimerval _hurd_itimerval; /* Current state of the timer. */
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mach_port_t _hurd_itimer_port; /* Port the timer thread blocks on. */
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thread_t _hurd_itimer_thread; /* Thread waiting for timeout. */
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int _hurd_itimer_thread_suspended; /* Nonzero if that thread is suspended. */
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vm_address_t _hurd_itimer_thread_stack_base; /* Base of its stack. */
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vm_address_t _hurd_itimer_thread_stack_size; /* Size of its stack. */
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struct timeval _hurd_itimer_started; /* Time the thread started waiting. */
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static inline void
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subtract_timeval (struct timeval *from, const struct timeval *subtract)
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{
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from->tv_usec -= subtract->tv_usec;
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from->tv_sec -= subtract->tv_sec;
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while (from->tv_usec < 0)
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{
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--from->tv_sec;
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from->tv_usec += 1000000;
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}
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}
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/* Function run by the itimer thread.
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This code must be very careful not ever to require a MiG reply port. */
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static void
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timer_thread (void)
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{
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while (1)
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{
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error_t err;
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/* The only message we ever expect to receive is the reply from the
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signal thread to a sig_post call we did. We never examine the
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contents. */
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struct
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{
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mach_msg_header_t header;
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error_t return_code;
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} msg;
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/* Wait for a message on a port that noone sends to. The purpose is
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the receive timeout. Notice interrupts so that if we are
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thread_abort'd, we will loop around and fetch new values from
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_hurd_itimerval. */
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err = __mach_msg (&msg.header,
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MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT,
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0, 0, _hurd_itimer_port,
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_hurd_itimerval.it_value.tv_sec * 1000 +
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_hurd_itimerval.it_value.tv_usec / 1000,
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MACH_PORT_NULL);
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switch (err)
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{
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case MACH_RCV_TIMED_OUT:
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/* We got the expected timeout. Send a message to the signal
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thread to tell it to post a SIGALRM signal. We use
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_hurd_itimer_port as the reply port just so we will block until
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the signal thread has frobnicated things to reload the itimer or
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has terminated this thread. */
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__msg_sig_post_request (_hurd_msgport,
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_hurd_itimer_port,
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MACH_MSG_TYPE_MAKE_SEND_ONCE,
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SIGALRM, 0, __mach_task_self ());
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break;
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case MACH_RCV_INTERRUPTED:
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/* We were thread_abort'd. This is to tell us that
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_hurd_itimerval has changed and we need to reexamine it
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and start waiting with the new timeout value. */
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break;
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case MACH_MSG_SUCCESS:
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/* We got the reply message from the sig_post_request above.
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Ignore it and reexamine the timer value. */
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__mach_msg_destroy (&msg.header); /* Just in case. */
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break;
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default:
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/* Unexpected lossage. Oh well, keep trying. */
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break;
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}
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}
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}
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static sighandler_t
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restart_itimer (struct hurd_signal_preemptor *preemptor,
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struct hurd_sigstate *ss,
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int *signo, struct hurd_signal_detail *detail)
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{
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static int setitimer_locked (const struct itimerval *new,
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struct itimerval *old, void *crit);
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/* This function gets called in the signal thread
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each time a SIGALRM is arriving (even if blocked). */
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struct itimerval it;
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/* Either reload or disable the itimer. */
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__spin_lock (&_hurd_itimer_lock);
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it.it_value = it.it_interval = _hurd_itimerval.it_interval;
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setitimer_locked (&it, NULL, NULL);
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/* Continue with normal delivery (or hold, etc.) of SIGALRM. */
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return SIG_ERR;
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}
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/* Called before any normal SIGALRM signal is delivered.
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Reload the itimer, or disable the itimer. */
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static int
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setitimer_locked (const struct itimerval *new, struct itimerval *old,
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void *crit)
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{
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struct itimerval newval;
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struct timeval now, remaining, elapsed;
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struct timeval old_interval;
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error_t err;
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inline void kill_itimer_thread (void)
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{
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__thread_terminate (_hurd_itimer_thread);
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__vm_deallocate (__mach_task_self (),
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_hurd_itimer_thread_stack_base,
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_hurd_itimer_thread_stack_size);
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_hurd_itimer_thread = MACH_PORT_NULL;
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}
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if (!new)
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{
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/* Just return the current value in OLD without changing anything.
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This is what BSD does, even though it's not documented. */
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if (old)
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*old = _hurd_itimerval;
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spin_unlock (&_hurd_itimer_lock);
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_hurd_critical_section_unlock (crit);
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return 0;
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}
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newval = *new;
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if ((newval.it_value.tv_sec | newval.it_value.tv_usec) != 0)
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{
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/* Make sure the itimer thread is set up. */
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/* Set up a signal preemptor global for all threads to
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run `restart_itimer' each time a SIGALRM would arrive. */
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static struct hurd_signal_preemptor preemptor =
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{
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__sigmask (SIGALRM), 0, 0,
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&restart_itimer,
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};
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__mutex_lock (&_hurd_siglock);
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if (! preemptor.next && _hurdsig_preemptors != &preemptor)
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{
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preemptor.next = _hurdsig_preemptors;
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_hurdsig_preemptors = &preemptor;
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}
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__mutex_unlock (&_hurd_siglock);
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if (_hurd_itimer_port == MACH_PORT_NULL)
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{
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/* Allocate a receive right that the itimer thread will
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block waiting for a message on. */
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if (err = __mach_port_allocate (__mach_task_self (),
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MACH_PORT_RIGHT_RECEIVE,
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&_hurd_itimer_port))
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goto out;
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}
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if (_hurd_itimer_thread == MACH_PORT_NULL)
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{
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/* Start up the itimer thread running `timer_thread' (below). */
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if (err = __thread_create (__mach_task_self (),
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&_hurd_itimer_thread))
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return __hurd_fail (err);
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_hurd_itimer_thread_stack_base = 0; /* Anywhere. */
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_hurd_itimer_thread_stack_size = __vm_page_size; /* Small stack. */
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if (err = __mach_setup_thread (__mach_task_self (),
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_hurd_itimer_thread,
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&timer_thread,
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&_hurd_itimer_thread_stack_base,
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&_hurd_itimer_thread_stack_size))
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{
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__thread_terminate (_hurd_itimer_thread);
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_hurd_itimer_thread = MACH_PORT_NULL;
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goto out;
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}
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_hurd_itimer_thread_suspended = 1;
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}
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}
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if ((newval.it_value.tv_sec | newval.it_value.tv_usec) != 0 || old != NULL)
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{
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/* Calculate how much time is remaining for the pending alarm. */
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if (__gettimeofday (&now, NULL) < 0)
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{
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__spin_unlock (&_hurd_itimer_lock);
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_hurd_critical_section_unlock (crit);
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return -1;
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}
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elapsed = now;
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subtract_timeval (&elapsed, &_hurd_itimer_started);
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remaining = _hurd_itimerval.it_value;
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if (timercmp (&remaining, &elapsed, <))
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{
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/* Hmm. The timer should have just gone off, but has not been reset.
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This is a possible timing glitch. The alarm will signal soon. */
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/* XXX wrong */
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remaining.tv_sec = 0;
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remaining.tv_usec = 0;
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}
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else
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subtract_timeval (&remaining, &elapsed);
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/* Remember the old reload interval before changing it. */
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old_interval = _hurd_itimerval.it_interval;
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/* Record the starting time that the timer interval relates to. */
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_hurd_itimer_started = now;
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}
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/* Load the new itimer value. */
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_hurd_itimerval = newval;
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if ((newval.it_value.tv_sec | newval.it_value.tv_usec) == 0)
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{
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/* Disable the itimer. */
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if (_hurd_itimer_thread && !_hurd_itimer_thread_suspended)
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{
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/* Suspend the itimer thread so it does nothing. Then abort its
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kernel context so that when the thread is resumed, mach_msg
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will return to timer_thread (below) and it will fetch new
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values from _hurd_itimerval. */
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if ((err = __thread_suspend (_hurd_itimer_thread)) ||
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(err = __thread_abort (_hurd_itimer_thread)))
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/* If we can't save it for later, nuke it. */
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kill_itimer_thread ();
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else
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_hurd_itimer_thread_suspended = 1;
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}
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}
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/* See if the timeout changed. If so, we must alert the itimer thread. */
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else if (remaining.tv_sec != new->it_value.tv_sec ||
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remaining.tv_usec != new->it_value.tv_usec)
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{
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/* The timeout value is changing. Tell the itimer thread to
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reexamine it and start counting down. If the itimer thread is
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marked as suspended, either we just created it, or it was
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suspended and thread_abort'd last time the itimer was disabled;
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either way it will wake up and start waiting for the new timeout
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value when we resume it. If it is not suspended, the itimer
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thread is waiting to deliver a pending alarm that we will override
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(since it would come later than the new alarm being set);
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thread_abort will make mach_msg return MACH_RCV_INTERRUPTED, so it
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will loop around and use the new timeout value. */
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if (err = (_hurd_itimer_thread_suspended
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? __thread_resume : __thread_abort) (_hurd_itimer_thread))
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{
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kill_itimer_thread ();
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goto out;
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}
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_hurd_itimer_thread_suspended = 0;
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}
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__spin_unlock (&_hurd_itimer_lock);
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_hurd_critical_section_unlock (crit);
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if (old != NULL)
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{
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old->it_value = remaining;
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||
old->it_interval = old_interval;
|
||
}
|
||
return 0;
|
||
|
||
out:
|
||
__spin_unlock (&_hurd_itimer_lock);
|
||
_hurd_critical_section_unlock (crit);
|
||
return __hurd_fail (err);
|
||
}
|
||
|
||
/* Set the timer WHICH to *NEW. If OLD is not NULL,
|
||
set *OLD to the old value of timer WHICH.
|
||
Returns 0 on success, -1 on errors. */
|
||
int
|
||
__setitimer (enum __itimer_which which, const struct itimerval *new,
|
||
struct itimerval *old)
|
||
{
|
||
void *crit;
|
||
|
||
switch (which)
|
||
{
|
||
default:
|
||
return __hurd_fail (EINVAL);
|
||
|
||
case ITIMER_VIRTUAL:
|
||
case ITIMER_PROF:
|
||
return __hurd_fail (ENOSYS);
|
||
|
||
case ITIMER_REAL:
|
||
break;
|
||
}
|
||
|
||
crit = _hurd_critical_section_lock ();
|
||
__spin_lock (&_hurd_itimer_lock);
|
||
return setitimer_locked (new, old, crit);
|
||
}
|
||
|
||
static void
|
||
fork_itimer (void)
|
||
{
|
||
/* We must restart the itimer in the child. */
|
||
|
||
struct itimerval it;
|
||
|
||
__spin_lock (&_hurd_itimer_lock);
|
||
_hurd_itimer_thread = MACH_PORT_NULL;
|
||
it = _hurd_itimerval;
|
||
it.it_value = it.it_interval;
|
||
|
||
setitimer_locked (&it, NULL, NULL);
|
||
|
||
(void) &fork_itimer; /* Avoid gcc optimizing out the function. */
|
||
}
|
||
text_set_element (_hurd_fork_child_hook, fork_itimer);
|
||
|
||
weak_alias (__setitimer, setitimer)
|