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authorUlrich Drepper <drepper@redhat.com>1997-12-04 00:12:34 +0000
committerUlrich Drepper <drepper@redhat.com>1997-12-04 00:12:34 +0000
commitcbdee2790df9dac548fb3157cfaf7aceb0f40034 (patch)
tree566a6db9f880efdd95cb05a92d37a4c7ef6b8092 /signal
parent04be94a87d0a74c022490db7f4f926253f0d69d3 (diff)
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1997-12-03 23:50 Ulrich Drepper <drepper@cygnus.com> * Makeconfig: Add shared-thread-library variable. * math/Makfile (CPPFLAGS): Add -D__LIBC_INTERNAL_MATH_INLINES. * sysdeps/i386/Makefile: Don't define ___LIBC_INTERNAL_MATH_INLINES here. * sysdeps/m68k/fpu/e_acos.c: Likewise. * sysdeps/m68k/fpu/e_atan2.c: Likewise. * sysdeps/m68k/fpu/e_fmod.c: Likewise. * sysdeps/m68k/fpu/e_pow.c: Likewise. * sysdeps/m68k/fpu/e_scalb.c: Likewise. * sysdeps/m68k/fpu/k_cos.c: Likewise. * sysdeps/m68k/fpu/k_sin.c: Likewise. * sysdeps/m68k/fpu/k_tan.c: Likewise. * sysdeps/m68k/fpu/s_atan.c: Likewise. * sysdeps/m68k/fpu/s_ccos.c: Likewise. * sysdeps/m68k/fpu/s_ccosh.c: Likewise. * sysdeps/m68k/fpu/s_cexp.c: Likewise. * sysdeps/m68k/fpu/s_csin.c: Likewise. * sysdeps/m68k/fpu/s_csinh.c: Likewise. * sysdeps/m68k/fpu/s_frexp.c: Likewise. * sysdeps/m68k/fpu/s_ilogb.c: Likewise. * sysdeps/m68k/fpu/s_isinf.c: Likewise. * sysdeps/m68k/fpu/s_llrint.c: Likewise. * sysdeps/m68k/fpu/s_llrintf.c: Likewise. * sysdeps/m68k/fpu/s_llrintl.c: Likewise. * sysdeps/m68k/fpu/s_lrint.c: Likewise. * sysdeps/m68k/fpu/s_modf.c: Likewise. * sysdeps/m68k/fpu/s_remquo.c: Likewise. * sysdeps/m68k/fpu/s_scalbn.c: Likewise. * sysdeps/m68k/fpu/s_sincos.c: Likewise. * libc.map: Add __libc_current_sigrtmin, __libc_current_sigrtmax, __libc_allocate_rtsig, sigqueue, sigtimedwait, sigwaitinfo. * signal/Makefile (headers): Add bits/siginfo.h. (routines): Add allocrtsig, sigtimedwait, sigwaitinfo, sigqueue. (distribute): Add testrtsig.h. * signal/allocrtsig.c: New file. * signal/signal.h: Define `union sigval'. Include <bits/siginfo.h>. Declare sigwaitinfo, sigtimedwait, sigqueue, __libc_current_sigrtmin, __libc_current_sigrtmax. * sysdeps/generic/sigqueue.c: New file. * sysdeps/generic/sigtimedwait.c: New file. * sysdeps/generic/sigwaitinfo.c: New file. * sysdeps/generic/testrtsig.h: New file. * sysdeps/generic/bits/siginfo.h: New file. * sysdeps/unix/sysv/linux/bits/siginfo.h: New file. * sysdeps/unix/sysv/linux/kernel_sigaction.h: Define struct as old_kernel_sigaction and rename sa_handler member to k_sa_handler. * sysdeps/unix/sysv/linux/rt_sigaction.c: New file. * sysdeps/unix/sysv/linux/rt_sigprocmask.c: New file. * sysdeps/unix/sysv/linux/rt_sigqueueinfo.c: New file. * sysdeps/unix/sysv/linux/rt_sigreturn.c: New file. * sysdeps/unix/sysv/linux/rt_sigsuspend.c: New file. * sysdeps/unix/sysv/linux/rt_sigtimedwait.c: New file. * sysdeps/unix/sysv/linux/sigpending.c: New file. * sysdeps/unix/sysv/linux/sigprocmask.c: New file. * sysdeps/unix/sysv/linux/sigqueue.c: New file. * sysdeps/unix/sysv/linux/sigreturn.c: New file. * sysdeps/unix/sysv/linux/sigtimedwait.c: New file. * sysdeps/unix/sysv/linux/sigwaitinfo.c: New file. * sysdeps/unix/sysv/linux/testrtsig.h: New file. * sysdeps/unix/sysv/linux/sigsuspend.c: Update for AIO. * sysdeps/unix/sysv/linux/syscalls.list: Update for AIO. * sysdeps/unix/sysv/linux/sigaction.c: Update for AIO. * sysdeps/unix/sysv/linux/bits/local_lim.h: Define AIO_PRIO_DELTA_MAX. * sysdeps/unix/sysv/linux/bits/posix_opt.h: Define _XOPEN_REALTIME and _POSIX_REALTIME_SIGNALS. * sysdeps/unix/sysv/linux/bits/sigaction.h: Update for AIO. * sysdeps/unix/sysv/linux/bits/signum.h: Define SIGRTMIN/MAX and update _NSIG. * sysdeps/unix/sysv/linux/i386/sigaction.c: Update for AIO. * sysdeps/unix/sysv/linux/i386/sys/ucontext.h: Linux/i386 specific definitions. * Makefile (subdirs): Add rt. * shlib-versions: Add entry for librt. * rt/Makefile: New file. * rt/aio.h: New file. * rt/aio_cancel.c: New file. * rt/aio_error.c: New file. * rt/aio_fsync.c: New file. * rt/aio_misc.c: New file. * rt/aio_misc.h: New file. * rt/aio_read.c: New file. * rt/aio_read64.c: New file. * rt/aio_return.c: New file. * rt/aio_suspend.c: New file. * rt/aio_write.c: New file. * rt/aio_write64.c: New file. * rt/lio_listio.c: New file. * rt/lio_listio64.c: New file. * sysdeps/generic/aio_sigqueue.c: New file. * sysdeps/unix/sysv/linux/aio_sigqueue.c: New file. * sysdeps/unix/sysv/linux/Dist: Add new files * sysdeps/unix/sysv/linux/Makefile [$(subdir)=signal] (sysdep_routines): Add rt_sigsuspend, rt_sigprocmask, rt_sigtimedwait, rt_sigqueueinfo, rt_sigaction. * posix/Makefile (headers): Add bits/environments.h. * posix/confstr.c: Correctly handle _CS_XBS5_ILP32_OFFBIG_CFLAGS and _CS_LFS_CFLAGS on 64bit platforms. * posix/unistd.h: Define _XOPEN_LEGACY. Explain _XOPEN_REALTIME and _XOPEN_REALTIME_THREADS. Include bits/environments.h. * sysdeps/generic/bits/confname.h: Define _SC_* constants for compilation modules. * sysdeps/wordsize-32/bits/environments.h: New file. * sysdeps/wordsize-64/bits/environments.h: New file. * posix/getopt.c: Remove declaration of getpid and __libc_pid. * posix/getopt_init.c: Test for value 0xf00baa of uninitialized __libc_pid. * sysdeps/unix/sysv/linux/init-first.c: Initialize __libc_pid to 0xf00baa. * string/string.h: Add declaration of __strverscmp. * string/strverscmp.c: Rename function ot __strverscmp and make old name weak alias. * sysdeps/generic/dl-sysdep.c: Declare and define __libc_uid. * sysdeps/generic/enbl-secure.c: Likewise. * sysdeps/mach/hurd/dl-sysdep.c: Likewise. * sysdeps/unix/sysv/linux/bits/sigset.h: Pretty print. * sysdeps/unix/sysv/linux/sys/pci.h: New file. 1997-12-03 Ulrich Drepper <drepper@cygnus.com> * posix/sys/wait.h: Use __transparent_union__ instead of transparent_union. Reported by Roland McGrath. 1997-12-03 Andreas Jaeger <aj@arthur.rhein-neckar.de> * resolv/inet_neta.c (inet_neta): Change type of first parameter to u_int32_t. Suggested by John Lavagnino <John_Lavagnino@Brown.edu> [PR libc/366]. * resolv/inet_addr.c (inet_addr): Change return type to u_int32_t. * inet/arpa/inet.h: Change types of inet_neta and inet_addr. 1997-12-03 20:40 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * grp/initgroups.c: Increase buffer if it is too small. 1997-12-03 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/netinet/ip.h: Don't use u_int8_t for bit fields, this is no ISO C. Reported by Andreas Jaeger. 1997-12-03 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/i386/sys/ucontext.h (enum): Add missing commata. 1997-12-03 08:58 Philip Blundell <pb@nexus.co.uk> * sysdeps/generic/bits/utsname.h: <sys/utsname.h> defines _SYS_UTSNAME_H not _UTSNAME_H. 1997-11-28 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * elf/dl-profile.c (_dl_start_profile): Avoid overflow when computing s_scale. 1997-11-29 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/libm-ieee754/s_csqrt.c: Use different formula for now. * sysdeps/libm-ieee754/s_csqrtf.c: Likewise. * sysdeps/libm-ieee754/s_csqrtl.c: Likewise. * math/libm-test.c (csqrt_test): Add testcase. 1997-12-03 15:44 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/sys/ultrasound.h: New file. * sysdeps/unix/sysv/linux/sys/Dist: Add it. * sysdeps/unix/sysv/linux/sys/Makefile [$(subdir)=misc]: Likewise. 1997-11-30 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * sysdeps/unix/sysv/linux/sys/timex.h: Fix declaration. 1997-12-01 Andreas Jaeger <aj@arthur.rhein-neckar.de> * math/libm-test.c (acos_test): Add more tests. (asin_test): Likewise. (atan_test): Likewise. (exp_test): Likewise. (sin_test): Likewise. (sqrt_test): Likewise. (cpow_test): Likewise. (csqrt_test): Likewise. (cexp_test): Correct typo in gcc version test. 1997-12-02 17:14 Philip Blundell <pb@nexus.co.uk> * sysdeps/arm/__longjmp.S: Define _SETJMP_H before including <bits/setjmp.h>. * sysdeps/arm/setjmp.S: Likewise. * sysdeps/unix/sysv/linux/arm/bits/mman.h: New file. 1997-12-02 18:07 Philip Blundell <pb@nexus.co.uk> * stdio/stdio.h: Add prototype for tmpfile64(). 1997-12-02 17:47 Philip Blundell <pb@nexus.co.uk> * stdio/stdio.h (__stdio_gen_tempname): Add extra argument to prototype to keep in step with libio version. * stdio-common/tmpfile64.c: Include <errno.h> for ENOSYS. 1997-12-02 17:41 Philip Blundell <pb@nexus.co.uk> * sysdeps/generic/Makefile: Don't try to use make_siglist if cross-compiling. 1997-12-02 01:18 Ulrich Drepper <drepper@cygnus.com> * sysdeps/unix/sysv/linux/i386/clone.S: When cloned process returns load GOT ptr before jumping to _exit. Reported by Xavier Leroy.
Diffstat (limited to 'signal')
-rw-r--r--signal/Makefile7
-rw-r--r--signal/allocrtsig.c89
-rw-r--r--signal/signal.h44
3 files changed, 137 insertions, 3 deletions
diff --git a/signal/Makefile b/signal/Makefile
index e35fb12..29aeea5 100644
--- a/signal/Makefile
+++ b/signal/Makefile
@@ -22,7 +22,7 @@
subdir := signal
headers := signal.h sys/signal.h bits/signum.h bits/sigcontext.h \
- bits/sigaction.h bits/sigset.h
+ bits/sigaction.h bits/sigset.h bits/siginfo.h
routines := signal raise killpg \
sigaction sigprocmask kill \
@@ -32,11 +32,12 @@ routines := signal raise killpg \
sigsetops sigempty sigfillset sigaddset sigdelset sigismem \
sigreturn \
siggetmask sysv_signal \
- sigisempty sigandset sigorset
+ sigisempty sigandset sigorset \
+ allocrtsig sigtimedwait sigwaitinfo sigqueue
tests := tst-signal
-distribute := sigsetops.h
+distribute := sigsetops.h testrtsig.h
include ../Rules
diff --git a/signal/allocrtsig.c b/signal/allocrtsig.c
new file mode 100644
index 0000000..678bc8b
--- /dev/null
+++ b/signal/allocrtsig.c
@@ -0,0 +1,89 @@
+/* Handle real-time signal allocation.
+ Copyright (C) 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ 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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <signal.h>
+
+/* In these variables we keep track of the used variables. If the
+ platform does not support any real-time signals we will define the
+ values to some unreasonable value which will signal failing of all
+ the functions below. */
+#ifndef __SIGRTMIN
+static int current_rtmin = -1;
+static int current_rtmax = -1;
+#else
+static int current_rtmin = __SIGRTMIN;
+static int current_rtmax = __SIGRTMAX;
+
+static int initialized;
+
+#include "testrtsig.h"
+
+static void
+init (void)
+{
+ if (!kernel_has_rtsig ())
+ {
+ current_rtmin = -1;
+ current_rtmax = -1;
+ }
+ initialized = 1;
+}
+#endif
+
+/* Return number of available real-time signal with highest priority. */
+int
+__libc_current_sigrtmin (void)
+{
+#ifdef __SIGRTMIN
+ if (!initialized)
+ init ();
+#endif
+ return current_rtmin;
+}
+
+/* Return number of available real-time signal with lowest priority. */
+int
+__libc_current_sigrtmax (void)
+{
+#ifdef __SIGRTMIN
+ if (!initialized)
+ init ();
+#endif
+ return current_rtmax;
+}
+
+/* Allocate real-time signal with highest/lowest available
+ priority. Please note that we don't use a lock since we assume
+ this function to be called at program start. */
+int
+__libc_allocate_rtsig (int high)
+{
+#ifndef __SIGRTMIN
+ return -1;
+#else
+ if (!initialized)
+ init ();
+ if (current_rtmin != -1 || current_rtmin > current_rtmax)
+ /* We don't have anymore signal available. */
+ return -1;
+
+ return high ? current_rtmin++ : current_rtmax--;
+#endif
+}
diff --git a/signal/signal.h b/signal/signal.h
index 5fb4bc2..8691b68 100644
--- a/signal/signal.h
+++ b/signal/signal.h
@@ -172,6 +172,20 @@ typedef __sigset_t sigset_t;
# ifdef _SIGNAL_H
+/* We need `struct timespec' later on. */
+# define __need_timespec
+# include <time.h>
+
+/* Type for data associated with a signal. */
+typedef union sigval
+ {
+ int sival_int;
+ void *sival_ptr;
+ } sigval_t;
+
+/* Get the `siginfo_t' type plus the needed symbols. */
+# include <bits/siginfo.h>
+
/* Clear all signals from SET. */
extern int sigemptyset __P ((sigset_t *__set));
@@ -229,6 +243,24 @@ extern int sigpending __P ((sigset_t *__set));
extern int __sigwait __P ((__const sigset_t *__set, int *__sig));
extern int sigwait __P ((__const sigset_t *__set, int *__sig));
+/* Select any of pending signals from SET and place information in INFO. */
+extern int __sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
+extern int sigwaitinfo __P ((__const sigset_t *__set, siginfo_t *__info));
+
+/* Select any of pending signals from SET and place information in INFO.
+ Wait the imte specified by TIMEOUT if no signal is pending. */
+extern int __sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
+ __const struct timespec *__timeout));
+extern int sigtimedwait __P ((__const sigset_t *__set, siginfo_t *__info,
+ __const struct timespec *__timeout));
+
+/* Send signal SIG to the process PID. Associate data in VAL with the
+ signal. */
+extern int __sigqueue __P ((__pid_t __pid, int __sig,
+ __const union sigval __val));
+extern int sigqueue __P ((__pid_t __pid, int __sig,
+ __const union sigval __val));
+
# endif /* <signal.h> included. */
#endif /* Use POSIX. */
@@ -313,6 +345,18 @@ extern int sigaltstack __P ((__const struct sigaltstack *__ss,
#endif /* signal.h included and use BSD or X/Open Unix. */
+
+/* The following functions are used internally in the C library and in
+ other code which need deep insights. */
+
+/* Return number of available real-time signal with highest priority. */
+extern int __libc_current_sigrtmin __P ((void));
+/* Return number of available real-time signal with lowest priority. */
+extern int __libc_current_sigrtmax __P ((void));
+
+/* Allocate real-time signal with highest/lowest available priority. */
+extern int __libc_allocate_rtsig __P ((int __high));
+
__END_DECLS
#endif /* signal.h */