Update. cvs/libc-ud-971204

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.

1 files changed, 306 insertions, 0 deletions

diff --git a/rt/aio_misc.c b/rt/aio_misc.c
new file mode 100644
index 0000000000..e4bb12c500
--- /dev/null
+++ b/rt/aio_misc.c
@@ -0,0 +1,306 @@
+/* Handle general operations.
+   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 <aio.h>
+#include <errno.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#include "aio_misc.h"
+
+
+/* We need a list of pending operations.  This is sorted according to
+   the priority given in the aio_reqprio member.  */
+aiocb_union *__aio_requests;
+
+/* Since the list is global we need a semaphore protecting it.  */
+sem_t __aio_requests_sema;
+
+
+/* The initialization function.  It gets automatically called if any
+   aio_* function is used in the program.  */
+static void
+__attribute__ ((unused))
+aio_initialize (void)
+{
+  /* Initialize the semaphore.  We allow exactly one user at a time.  */
+  sem_init (&__aio_requests_sema, 0, 1);
+}
+
+text_set_element (__libc_subinit, aio_initialize);
+
+
+/* The thread handler.  */
+static void *handle_fildes_io (void *arg);
+
+
+/* The main function of the async I/O handling.  It enqueues requests
+   and if necessary starts and handles threads.  */
+int
+__aio_enqueue_request (aiocb_union *aiocbp, int operation, int require_lock)
+{
+  int result;
+  int policy, prio;
+  struct sched_param param;
+  aiocb_union *runp;
+
+  if (aiocbp->aiocb.aio_reqprio < 0
+      || aiocbp->aiocb.aio_reqprio > AIO_PRIO_DELTA_MAX)
+    {
+      /* Invalid priority value.  */
+      __set_errno (EINVAL);
+      aiocbp->aiocb.__error_code = EINVAL;
+      aiocbp->aiocb.__return_value = -1;
+      return -1;
+    }
+
+  if (pthread_getschedparam (pthread_self (), &policy, &param) < 0)
+    {
+      /* Something went wrong.  */
+      aiocbp->aiocb.__error_code = errno;
+      aiocbp->aiocb.__return_value = -1;
+      return -1;
+    }
+
+  /* Compute priority for this request.  */
+  prio = param.sched_priority - aiocbp->aiocb.aio_reqprio;
+
+
+  /* Get the semaphore.  */
+  if (require_lock)
+    sem_wait (&__aio_requests_sema);
+
+  runp = __aio_requests;
+  /* First look whether the current file descriptor is currently
+     worked with.  */
+  while (runp != NULL && runp->aiocb.aio_fildes < aiocbp->aiocb.aio_fildes)
+    runp = (aiocb_union *) runp->aiocb.__next_fd;
+
+  if (runp != NULL)
+    {
+      /* The current file descriptor is worked on.  It makes no sense
+	 to start another thread since this new thread would have to
+	 wait for the previous one to terminate.  Simply enqueue it
+	 after the running one according to the priority.  */
+      while (runp->aiocb.__next_prio != NULL
+	     && runp->aiocb.__next_prio->__abs_prio >= prio)
+	runp = (aiocb_union *) runp->aiocb.__next_prio;
+
+      aiocbp->aiocb.__next_prio = runp->aiocb.__next_prio;
+      aiocbp->aiocb.__abs_prio = prio;
+      aiocbp->aiocb.__policy = policy;
+      aiocbp->aiocb.aio_lio_opcode = operation;
+      aiocbp->aiocb.__error_code = EINPROGRESS;
+      aiocbp->aiocb.__return_value = 0;
+      runp->aiocb.__next_prio = (struct aiocb *) aiocbp;
+
+      result = 0;
+    }
+  else
+    {
+      /* We create a new thread for this file descriptor.  The
+	 function which gets called will handle all available requests
+	 for this descriptor and when all are processed it will
+	 terminate.  */
+      pthread_t thid;
+      pthread_attr_t attr;
+
+      /* First enqueue the request (the list is empty).  */
+      aiocbp->aiocb.__next_fd = NULL;
+      aiocbp->aiocb.__last_fd = NULL;
+
+      aiocbp->aiocb.__next_prio = NULL;
+      aiocbp->aiocb.__abs_prio = prio;
+      aiocbp->aiocb.__policy = policy;
+      aiocbp->aiocb.aio_lio_opcode = operation;
+      aiocbp->aiocb.__error_code = EINPROGRESS;
+      aiocbp->aiocb.__return_value = 0;
+
+      /* Make sure the thread is created detached.  */
+      pthread_attr_init (&attr);
+      pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+
+      /* Now try to start a thread.  */
+      if (pthread_create (&thid, &attr, handle_fildes_io, aiocbp) < 0)
+	{
+	  result = -1;
+	  aiocbp->aiocb.__error_code = errno;
+	  aiocbp->aiocb.__return_value = -1;
+	}
+      else
+	/* We managed to enqueue the request.  All errors which can
+	   happen now can be recognized by calls to `aio_return' and
+	   `aio_error'.  */
+	  result = 0;
+    }
+
+  /* Release the semaphore.  */
+  if (require_lock)
+    sem_post (&__aio_requests_sema);
+
+  return result;
+}
+
+
+static void *
+handle_fildes_io (void *arg)
+{
+  pthread_t self = pthread_self ();
+  struct sched_param param;
+  aiocb_union *runp = (aiocb_union *) arg;
+  int policy;
+  int fildes = runp->aiocb.aio_fildes;	/* This is always the same.  */
+
+  pthread_getschedparam (self, &policy, &param);
+
+  do
+    {
+      /* Change the priority to the requested value (if necessary).  */
+      if (runp->aiocb.__abs_prio != param.sched_priority
+	  || runp->aiocb.__policy != policy)
+	{
+	  param.sched_priority = runp->aiocb.__abs_prio;
+	  policy = runp->aiocb.__policy;
+	  pthread_setschedparam (self, policy, &param);
+	}
+
+      /* Process request pointed to by RUNP.  We must not be disturbed
+	 by signals.  */
+      if ((runp->aiocb.aio_lio_opcode & 127) == LIO_READ)
+	{
+	  if (runp->aiocb.aio_lio_opcode & 128)
+	    runp->aiocb.__return_value =
+	      TEMP_FAILURE_RETRY (__pread64 (fildes,
+					     (void *) runp->aiocb64.aio_buf,
+					     runp->aiocb64.aio_nbytes,
+					     runp->aiocb64.aio_offset));
+	  else
+	    runp->aiocb.__return_value =
+	      TEMP_FAILURE_RETRY (__pread (fildes,
+					   (void *) runp->aiocb.aio_buf,
+					   runp->aiocb.aio_nbytes,
+					   runp->aiocb.aio_offset));
+	}
+      else if ((runp->aiocb.aio_lio_opcode & 127) == LIO_WRITE)
+	{
+	  if (runp->aiocb.aio_lio_opcode & 128)
+	    runp->aiocb.__return_value =
+	      TEMP_FAILURE_RETRY (__pwrite64 (fildes,
+					      (const void *) runp->aiocb64.aio_buf,
+					      runp->aiocb64.aio_nbytes,
+					      runp->aiocb64.aio_offset));
+	  else
+	    runp->aiocb.__return_value =
+	      TEMP_FAILURE_RETRY (__pwrite (fildes,
+					    (const void *) runp->aiocb.aio_buf,
+					    runp->aiocb.aio_nbytes,
+					    runp->aiocb.aio_offset));
+	}
+      else if (runp->aiocb.aio_lio_opcode == __LIO_DSYNC)
+	runp->aiocb.__return_value = TEMP_FAILURE_RETRY (fdatasync (fildes));
+      else if (runp->aiocb.aio_lio_opcode == __LIO_SYNC)
+	runp->aiocb.__return_value = TEMP_FAILURE_RETRY (fsync (fildes));
+      else
+	{
+	  /* This is an invalid opcode.  */
+	  runp->aiocb.__return_value = -1;
+	  __set_errno (EINVAL);
+	}
+
+      if (runp->aiocb.__return_value == -1)
+	runp->aiocb.__error_code = errno;
+      else
+	runp->aiocb.__error_code = 0;
+
+      /* Send the signal to notify about finished processing of the
+	 request.  */
+      if (runp->aiocb.aio_sigevent.sigev_notify == SIGEV_THREAD)
+	{
+	  /* We have to start a thread.  */
+	  pthread_t tid;
+	  pthread_attr_t attr, *pattr;
+
+	  pattr = (pthread_attr_t *)
+	    runp->aiocb.aio_sigevent.sigev_notify_attributes;
+	  if (pattr == NULL)
+	    {
+	      pthread_attr_init (&attr);
+	      pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
+	      pattr = &attr;
+	    }
+
+	  if (pthread_create (&tid,
+			      (pthread_attr_t *)
+			      runp->aiocb.aio_sigevent.sigev_notify_attributes,
+			      (void *(*) (void *))
+			      runp->aiocb.aio_sigevent.sigev_notify_function,
+			      runp->aiocb.aio_sigevent.sigev_value.sival_ptr)
+	      < 0)
+	    {
+	      /* XXX What shall we do if already an error is set by
+		 read/write/fsync?  */
+	      runp->aiocb.__error_code = errno;
+	      runp->aiocb.__return_value = -1;
+	    }
+	}
+      else if (runp->aiocb.aio_sigevent.sigev_notify == SIGEV_SIGNAL)
+	/* We have to send a signal.  */
+	if (__aio_sigqueue (runp->aiocb.aio_sigevent.sigev_signo,
+			    runp->aiocb.aio_sigevent.sigev_value) < 0)
+	  {
+	    /* XXX What shall we do if already an error is set by
+	       read/write/fsync?  */
+	    runp->aiocb.__error_code = errno;
+	    runp->aiocb.__return_value = -1;
+	  }
+
+      /* Get the semaphore.  */
+      sem_wait (&__aio_requests_sema);
+
+      /* Now dequeue the current request.  */
+      if (runp->aiocb.__next_prio == NULL)
+	{
+	  if (runp->aiocb.__next_fd != NULL)
+	    runp->aiocb.__next_fd->__last_fd = runp->aiocb.__last_fd;
+	  if (runp->aiocb.__last_fd != NULL)
+	    runp->aiocb.__last_fd->__next_fd = runp->aiocb.__next_fd;
+	  runp = NULL;
+	}
+      else
+	{
+	  runp->aiocb.__next_prio->__last_fd = runp->aiocb.__last_fd;
+	  runp->aiocb.__next_prio->__next_fd = runp->aiocb.__next_fd;
+	  if (runp->aiocb.__next_fd != NULL)
+	    runp->aiocb.__next_fd->__last_fd = runp->aiocb.__next_prio;
+	  if (runp->aiocb.__last_fd != NULL)
+	    runp->aiocb.__last_fd->__next_fd = runp->aiocb.__next_prio;
+	  runp = (aiocb_union *) runp->aiocb.__next_prio;
+	}
+
+      /* Release the semaphore.  */
+      sem_post (&__aio_requests_sema);
+    }
+  while (runp != NULL);
+
+  pthread_exit (NULL);
+}