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Added missing files. 

Changed direntry in gnupg.texi from gpg to gpg2.
This commit is contained in:
Werner Koch 2006-12-13 16:49:10 +00:00
parent 71b6a940a3
commit 02a2e26489
14 changed files with 2583 additions and 1 deletions
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6
TODO
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@ -112,3 +112,9 @@
* Extend selinux support to other modules
* Remove -sat PGP2 compatibility hack
* gnupg14/mpi: rsa_verify
Is this is optimized for a 160 bit hash?
* Cleanup m4/ on next gettext update
There is at least one couple of duplicate files: inttype[_-]h.m4.

2
doc/gnupg.texi
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@ -48,7 +48,7 @@ section entitled ``Copying''.
@dircategory GNU Utilities
@direntry
* gpg: (gnupg). OpenPGP encryption and signing tool.
* gpg2: (gnupg). OpenPGP encryption and signing tool.
* gpgsm: (gnupg). S/MIME encryption and signing tool.
@end direntry

162
doc/gpgv.texi Normal file
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@ -0,0 +1,162 @@
@c Copyright (C) 2004 Free Software Foundation, Inc.
@c This is part of the GnuPG manual.
@c For copying conditions, see the file GnuPG.texi.
@c
@c This is included by tools.texi.
@c
@c Begin GnuPG 1.x specific stuff
@ifset gpgone
@macro gpgvname
gpgv
@end macro
@manpage gpgv.1
@node gpgv
@section Verify OpenPGP signatures
@ifset manverb
.B gpgv
\- Verify OpenPGP signatures
@end ifset
@mansect synopsis
@ifset manverb
.B gpgv
.RI [ options ]
.I signed_files
@end ifset
@end ifset
@c End GnuPG 1.x specific stuff
@c Begin GnuPG 2 specific stuff
@ifclear gpgone
@macro gpgvname
gpgv2
@end macro
@manpage gpgv2.1
@node gpgv
@section Verify OpenPGP signatures
@ifset manverb
.B gpgv2
\- Verify OpenPGP signatures
@end ifset
@mansect synopsis
@ifset manverb
.B gpgv2
.RI [ options ]
.I signed_files
@end ifset
@end ifclear
@c End GnuPG 2 specific stuff
@mansect description
@code{@gpgvname} is an OpenPGP signature verification tool.
This program is actually a stripped down version of @code{gpg} which is
only able to check signatures. It is somewhat smaller than the fully blown
@code{gpg} and uses a different (and simpler) way to check that
the public keys used to make the signature are valid. There are
no configuration files and only a few options are implemented.
@code{@gpgvname} assumes that all keys in the keyring are trustworthy.
By default it uses a keyring named @file{trustedkeys.gpg} which is
assumed to be in the home directory as defined by GnuPG or set by an
option or an environment variable. An option may be used to specify
another keyring or even multiple keyrings.
@noindent
@mansect options
@code{@gpgvname} recognizes these options:
@table @gnupgtabopt
@item --verbose
@itemx -v
@opindex verbose
Gives more information during processing. If used
twice, the input data is listed in detail.
@item --quiet
@itemx -q
@opindex quiet
Try to be as quiet as possible.
@item --keyring @var{file}
@opindex keyring
Add @var{file} to the list of keyrings.
If @var{file} begins with a tilde and a slash, these
are replaced by the HOME directory. If the filename
does not contain a slash, it is assumed to be in the
home-directory ("~/.gnupg" if --homedir is not used).
@item --status-fd @var{n}
@opindex status-fd
Write special status strings to the file descriptor @var{n}. See the
file DETAILS in the documentation for a listing of them.
@item --logger-fd @code{n}
@opindex logger-fd
Write log output to file descriptor @code{n} and not to stderr.
@item --ignore-time-conflict
@opindex ignore-time-conflict
GnuPG normally checks that the timestamps associated with keys and
signatures have plausible values. However, sometimes a signature seems to
be older than the key due to clock problems. This option turns these
checks into warnings.
@include opt-homedir.texi
@end table
@mansect return value
The program returns 0 if everything was fine, 1 if at least
one signature was bad, and other error codes for fatal errors.
@mansect examples
@subsection Examples
@table @asis
@item @gpgvname @code{pgpfile}
@itemx @gpgvname @code{sigfile}
Verify the signature of the file. The second form
is used for detached signatures, where @code{sigfile} is the detached
signature (either ASCII armored or binary) and are the signed
data; if this is not given the name of the file holding the signed data is
constructed by cutting off the extension (".asc", ".sig" or ".sign") from
@code{sigfile}.
@end table
@mansect environment
@subsection Environment
@table @asis
@item HOME
Used to locate the default home directory.
@item GNUPGHOME
If set directory used instead of "~/.gnupg".
@end table
@mansect files
@subsection FILES
@table @asis
@item ~/.gnupg/trustedkeys.gpg
The default keyring with the allowed keys
@end table
@mansect see also
@command{gpg2}(1)
@include see-also-note.texi

6
intl/export.h Normal file
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@ -0,0 +1,6 @@
#if @HAVE_VISIBILITY@ && BUILDING_LIBINTL
#define LIBINTL_DLL_EXPORTED __attribute__((__visibility__("default")))
#else
#define LIBINTL_DLL_EXPORTED
#endif

51
intl/hash-string.c Normal file
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@ -0,0 +1,51 @@
/* Implements a string hashing function.
Copyright (C) 1995, 1997, 1998, 2000, 2003 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 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; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/* Specification. */
#include "hash-string.h"
/* Defines the so called `hashpjw' function by P.J. Weinberger
[see Aho/Sethi/Ullman, COMPILERS: Principles, Techniques and Tools,
1986, 1987 Bell Telephone Laboratories, Inc.] */
unsigned long int
__hash_string (const char *str_param)
{
unsigned long int hval, g;
const char *str = str_param;
/* Compute the hash value for the given string. */
hval = 0;
while (*str != '\0')
{
hval <<= 4;
hval += (unsigned char) *str++;
g = hval & ((unsigned long int) 0xf << (HASHWORDBITS - 4));
if (g != 0)
{
hval ^= g >> (HASHWORDBITS - 8);
hval ^= g;
}
}
return hval;
}

36
intl/intl-exports.c Normal file
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@ -0,0 +1,36 @@
/* List of exported symbols of libintl on Cygwin.
Copyright (C) 2006 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2006.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
/* IMP(x) is a symbol that contains the address of x. */
#define IMP(x) _imp__##x
/* Ensure that the variable x is exported from the library, and that a
pseudo-variable IMP(x) is available. */
#define VARIABLE(x) \
/* Export x without redefining x. This code was found by compiling a \
snippet: \
extern __declspec(dllexport) int x; int x = 42; */ \
asm (".section .drectve\n"); \
asm (".ascii \" -export:" #x ",data\"\n"); \
asm (".data\n"); \
/* Allocate a pseudo-variable IMP(x). */ \
extern int x; \
void * IMP(x) = &x;
VARIABLE(libintl_version)

130
intl/langprefs.c Normal file
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@ -0,0 +1,130 @@
/* Determine the user's language preferences.
Copyright (C) 2004-2005 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
/* Written by Bruno Haible <bruno@clisp.org>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#if HAVE_CFPREFERENCESCOPYAPPVALUE
# include <string.h>
# include <CoreFoundation/CFPreferences.h>
# include <CoreFoundation/CFPropertyList.h>
# include <CoreFoundation/CFArray.h>
# include <CoreFoundation/CFString.h>
extern void _nl_locale_name_canonicalize (char *name);
#endif
/* Determine the user's language preferences, as a colon separated list of
locale names in XPG syntax
language[_territory[.codeset]][@modifier]
The result must not be freed; it is statically allocated.
The LANGUAGE environment variable does not need to be considered; it is
already taken into account by the caller. */
const char *
_nl_language_preferences_default (void)
{
#if HAVE_CFPREFERENCESCOPYAPPVALUE /* MacOS X 10.2 or newer */
{
/* Cache the preferences list, since CoreFoundation calls are expensive. */
static const char *cached_languages;
static int cache_initialized;
if (!cache_initialized)
{
CFTypeRef preferences =
CFPreferencesCopyAppValue (CFSTR ("AppleLanguages"),
kCFPreferencesCurrentApplication);
if (preferences != NULL
&& CFGetTypeID (preferences) == CFArrayGetTypeID ())
{
CFArrayRef prefArray = (CFArrayRef)preferences;
int n = CFArrayGetCount (prefArray);
char buf[256];
size_t size = 0;
int i;
for (i = 0; i < n; i++)
{
CFTypeRef element = CFArrayGetValueAtIndex (prefArray, i);
if (element != NULL
&& CFGetTypeID (element) == CFStringGetTypeID ()
&& CFStringGetCString ((CFStringRef)element,
buf, sizeof (buf),
kCFStringEncodingASCII))
{
_nl_locale_name_canonicalize (buf);
size += strlen (buf) + 1;
/* Most GNU programs use msgids in English and don't ship
an en.mo message catalog. Therefore when we see "en"
in the preferences list, arrange for gettext() to
return the msgid, and ignore all further elements of
the preferences list. */
if (strcmp (buf, "en") == 0)
break;
}
else
break;
}
if (size > 0)
{
char *languages = (char *) malloc (size);
if (languages != NULL)
{
char *p = languages;
for (i = 0; i < n; i++)
{
CFTypeRef element =
CFArrayGetValueAtIndex (prefArray, i);
if (element != NULL
&& CFGetTypeID (element) == CFStringGetTypeID ()
&& CFStringGetCString ((CFStringRef)element,
buf, sizeof (buf),
kCFStringEncodingASCII))
{
_nl_locale_name_canonicalize (buf);
strcpy (p, buf);
p += strlen (buf);
*p++ = ':';
if (strcmp (buf, "en") == 0)
break;
}
else
break;
}
*--p = '\0';
cached_languages = languages;
}
}
}
cache_initialized = 1;
}
if (cached_languages != NULL)
return cached_languages;
}
#endif
return NULL;
}

924
intl/lock.c Normal file
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@ -0,0 +1,924 @@
/* Locking in multithreaded situations.
Copyright (C) 2005 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005.
Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
gthr-win32.h. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "lock.h"
/* ========================================================================= */
#if USE_POSIX_THREADS
/* Use the POSIX threads library. */
# if PTHREAD_IN_USE_DETECTION_HARD
/* The function to be executed by a dummy thread. */
static void *
dummy_thread_func (void *arg)
{
return arg;
}
int
glthread_in_use (void)
{
static int tested;
static int result; /* 1: linked with -lpthread, 0: only with libc */
if (!tested)
{
pthread_t thread;
if (pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
/* Thread creation failed. */
result = 0;
else
{
/* Thread creation works. */
void *retval;
if (pthread_join (thread, &retval) != 0)
abort ();
result = 1;
}
tested = 1;
}
return result;
}
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
/* ------------------------- gl_rwlock_t datatype ------------------------- */
# if HAVE_PTHREAD_RWLOCK
# if !defined PTHREAD_RWLOCK_INITIALIZER
void
glthread_rwlock_init (gl_rwlock_t *lock)
{
if (pthread_rwlock_init (&lock->rwlock, NULL) != 0)
abort ();
lock->initialized = 1;
}
void
glthread_rwlock_rdlock (gl_rwlock_t *lock)
{
if (!lock->initialized)
{
if (pthread_mutex_lock (&lock->guard) != 0)
abort ();
if (!lock->initialized)
glthread_rwlock_init (lock);
if (pthread_mutex_unlock (&lock->guard) != 0)
abort ();
}
if (pthread_rwlock_rdlock (&lock->rwlock) != 0)
abort ();
}
void
glthread_rwlock_wrlock (gl_rwlock_t *lock)
{
if (!lock->initialized)
{
if (pthread_mutex_lock (&lock->guard) != 0)
abort ();
if (!lock->initialized)
glthread_rwlock_init (lock);
if (pthread_mutex_unlock (&lock->guard) != 0)
abort ();
}
if (pthread_rwlock_wrlock (&lock->rwlock) != 0)
abort ();
}
void
glthread_rwlock_unlock (gl_rwlock_t *lock)
{
if (!lock->initialized)
abort ();
if (pthread_rwlock_unlock (&lock->rwlock) != 0)
abort ();
}
void
glthread_rwlock_destroy (gl_rwlock_t *lock)
{
if (!lock->initialized)
abort ();
if (pthread_rwlock_destroy (&lock->rwlock) != 0)
abort ();
lock->initialized = 0;
}
# endif
# else
void
glthread_rwlock_init (gl_rwlock_t *lock)
{
if (pthread_mutex_init (&lock->lock, NULL) != 0)
abort ();
if (pthread_cond_init (&lock->waiting_readers, NULL) != 0)
abort ();
if (pthread_cond_init (&lock->waiting_writers, NULL) != 0)
abort ();
lock->waiting_writers_count = 0;
lock->runcount = 0;
}
void
glthread_rwlock_rdlock (gl_rwlock_t *lock)
{
if (pthread_mutex_lock (&lock->lock) != 0)
abort ();
/* Test whether only readers are currently running, and whether the runcount
field will not overflow. */
/* POSIX says: "It is implementation-defined whether the calling thread
acquires the lock when a writer does not hold the lock and there are
writers blocked on the lock." Let's say, no: give the writers a higher
priority. */
while (!(lock->runcount + 1 > 0 && lock->waiting_writers_count == 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_readers. */
if (pthread_cond_wait (&lock->waiting_readers, &lock->lock) != 0)
abort ();
}
lock->runcount++;
if (pthread_mutex_unlock (&lock->lock) != 0)
abort ();
}
void
glthread_rwlock_wrlock (gl_rwlock_t *lock)
{
if (pthread_mutex_lock (&lock->lock) != 0)
abort ();
/* Test whether no readers or writers are currently running. */
while (!(lock->runcount == 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_writers. */
lock->waiting_writers_count++;
if (pthread_cond_wait (&lock->waiting_writers, &lock->lock) != 0)
abort ();
lock->waiting_writers_count--;
}
lock->runcount--; /* runcount becomes -1 */
if (pthread_mutex_unlock (&lock->lock) != 0)
abort ();
}
void
glthread_rwlock_unlock (gl_rwlock_t *lock)
{
if (pthread_mutex_lock (&lock->lock) != 0)
abort ();
if (lock->runcount < 0)
{
/* Drop a writer lock. */
if (!(lock->runcount == -1))
abort ();
lock->runcount = 0;
}
else
{
/* Drop a reader lock. */
if (!(lock->runcount > 0))
abort ();
lock->runcount--;
}
if (lock->runcount == 0)
{
/* POSIX recommends that "write locks shall take precedence over read
locks", to avoid "writer starvation". */
if (lock->waiting_writers_count > 0)
{
/* Wake up one of the waiting writers. */
if (pthread_cond_signal (&lock->waiting_writers) != 0)
abort ();
}
else
{
/* Wake up all waiting readers. */
if (pthread_cond_broadcast (&lock->waiting_readers) != 0)
abort ();
}
}
if (pthread_mutex_unlock (&lock->lock) != 0)
abort ();
}
void
glthread_rwlock_destroy (gl_rwlock_t *lock)
{
if (pthread_mutex_destroy (&lock->lock) != 0)
abort ();
if (pthread_cond_destroy (&lock->waiting_readers) != 0)
abort ();
if (pthread_cond_destroy (&lock->waiting_writers) != 0)
abort ();
}
# endif
/* --------------------- gl_recursive_lock_t datatype --------------------- */
# if HAVE_PTHREAD_MUTEX_RECURSIVE
# if !(defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER || defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP)
void
glthread_recursive_lock_init (gl_recursive_lock_t *lock)
{
pthread_mutexattr_t attributes;
if (pthread_mutexattr_init (&attributes) != 0)
abort ();
if (pthread_mutexattr_settype (&attributes, PTHREAD_MUTEX_RECURSIVE) != 0)
abort ();
if (pthread_mutex_init (&lock->recmutex, &attributes) != 0)
abort ();
if (pthread_mutexattr_destroy (&attributes) != 0)
abort ();
lock->initialized = 1;
}
void
glthread_recursive_lock_lock (gl_recursive_lock_t *lock)
{
if (!lock->initialized)
{
if (pthread_mutex_lock (&lock->guard) != 0)
abort ();
if (!lock->initialized)
glthread_recursive_lock_init (lock);
if (pthread_mutex_unlock (&lock->guard) != 0)
abort ();
}
if (pthread_mutex_lock (&lock->recmutex) != 0)
abort ();
}
void
glthread_recursive_lock_unlock (gl_recursive_lock_t *lock)
{
if (!lock->initialized)
abort ();
if (pthread_mutex_unlock (&lock->recmutex) != 0)
abort ();
}
void
glthread_recursive_lock_destroy (gl_recursive_lock_t *lock)
{
if (!lock->initialized)
abort ();
if (pthread_mutex_destroy (&lock->recmutex) != 0)
abort ();
lock->initialized = 0;
}
# endif
# else
void
glthread_recursive_lock_init (gl_recursive_lock_t *lock)
{
if (pthread_mutex_init (&lock->mutex, NULL) != 0)
abort ();
lock->owner = (pthread_t) 0;
lock->depth = 0;
}
void
glthread_recursive_lock_lock (gl_recursive_lock_t *lock)
{
pthread_t self = pthread_self ();
if (lock->owner != self)
{
if (pthread_mutex_lock (&lock->mutex) != 0)
abort ();
lock->owner = self;
}
if (++(lock->depth) == 0) /* wraparound? */
abort ();
}
void
glthread_recursive_lock_unlock (gl_recursive_lock_t *lock)
{
if (lock->owner != pthread_self ())
abort ();
if (lock->depth == 0)
abort ();
if (--(lock->depth) == 0)
{
lock->owner = (pthread_t) 0;
if (pthread_mutex_unlock (&lock->mutex) != 0)
abort ();
}
}
void
glthread_recursive_lock_destroy (gl_recursive_lock_t *lock)
{
if (lock->owner != (pthread_t) 0)
abort ();
if (pthread_mutex_destroy (&lock->mutex) != 0)
abort ();
}
# endif
/* -------------------------- gl_once_t datatype -------------------------- */
static const pthread_once_t fresh_once = PTHREAD_ONCE_INIT;
int
glthread_once_singlethreaded (pthread_once_t *once_control)
{
/* We don't know whether pthread_once_t is an integer type, a floating-point
type, a pointer type, or a structure type. */
char *firstbyte = (char *)once_control;
if (*firstbyte == *(const char *)&fresh_once)
{
/* First time use of once_control. Invert the first byte. */
*firstbyte = ~ *(const char *)&fresh_once;
return 1;
}
else
return 0;
}
#endif
/* ========================================================================= */
#if USE_PTH_THREADS
/* Use the GNU Pth threads library. */
/* -------------------------- gl_lock_t datatype -------------------------- */
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* -------------------------- gl_once_t datatype -------------------------- */
void
glthread_once_call (void *arg)
{
void (**gl_once_temp_addr) (void) = (void (**) (void)) arg;
void (*initfunction) (void) = *gl_once_temp_addr;
initfunction ();
}
int
glthread_once_singlethreaded (pth_once_t *once_control)
{
/* We know that pth_once_t is an integer type. */
if (*once_control == PTH_ONCE_INIT)
{
/* First time use of once_control. Invert the marker. */
*once_control = ~ PTH_ONCE_INIT;
return 1;
}
else
return 0;
}
#endif
/* ========================================================================= */
#if USE_SOLARIS_THREADS
/* Use the old Solaris threads library. */
/* -------------------------- gl_lock_t datatype -------------------------- */
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* --------------------- gl_recursive_lock_t datatype --------------------- */
void
glthread_recursive_lock_init (gl_recursive_lock_t *lock)
{
if (mutex_init (&lock->mutex, USYNC_THREAD, NULL) != 0)
abort ();
lock->owner = (thread_t) 0;
lock->depth = 0;
}
void
glthread_recursive_lock_lock (gl_recursive_lock_t *lock)
{
thread_t self = thr_self ();
if (lock->owner != self)
{
if (mutex_lock (&lock->mutex) != 0)
abort ();
lock->owner = self;
}
if (++(lock->depth) == 0) /* wraparound? */
abort ();
}
void
glthread_recursive_lock_unlock (gl_recursive_lock_t *lock)
{
if (lock->owner != thr_self ())
abort ();
if (lock->depth == 0)
abort ();
if (--(lock->depth) == 0)
{
lock->owner = (thread_t) 0;
if (mutex_unlock (&lock->mutex) != 0)
abort ();
}
}
void
glthread_recursive_lock_destroy (gl_recursive_lock_t *lock)
{
if (lock->owner != (thread_t) 0)
abort ();
if (mutex_destroy (&lock->mutex) != 0)
abort ();
}
/* -------------------------- gl_once_t datatype -------------------------- */
void
glthread_once (gl_once_t *once_control, void (*initfunction) (void))
{
if (!once_control->inited)
{
/* Use the mutex to guarantee that if another thread is already calling
the initfunction, this thread waits until it's finished. */
if (mutex_lock (&once_control->mutex) != 0)
abort ();
if (!once_control->inited)
{
once_control->inited = 1;
initfunction ();
}
if (mutex_unlock (&once_control->mutex) != 0)
abort ();
}
}
int
glthread_once_singlethreaded (gl_once_t *once_control)
{
/* We know that gl_once_t contains an integer type. */
if (!once_control->inited)
{
/* First time use of once_control. Invert the marker. */
once_control->inited = ~ 0;
return 1;
}
else
return 0;
}
#endif
/* ========================================================================= */
#if USE_WIN32_THREADS
/* -------------------------- gl_lock_t datatype -------------------------- */
void
glthread_lock_init (gl_lock_t *lock)
{
InitializeCriticalSection (&lock->lock);
lock->guard.done = 1;
}
void
glthread_lock_lock (gl_lock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_lock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
}
void
glthread_lock_unlock (gl_lock_t *lock)
{
if (!lock->guard.done)
abort ();
LeaveCriticalSection (&lock->lock);
}
void
glthread_lock_destroy (gl_lock_t *lock)
{
if (!lock->guard.done)
abort ();
DeleteCriticalSection (&lock->lock);
lock->guard.done = 0;
}
/* ------------------------- gl_rwlock_t datatype ------------------------- */
static inline void
gl_waitqueue_init (gl_waitqueue_t *wq)
{
wq->array = NULL;
wq->count = 0;
wq->alloc = 0;
wq->offset = 0;
}
/* Enqueues the current thread, represented by an event, in a wait queue.
Returns INVALID_HANDLE_VALUE if an allocation failure occurs. */
static HANDLE
gl_waitqueue_add (gl_waitqueue_t *wq)
{
HANDLE event;
unsigned int index;
if (wq->count == wq->alloc)
{
unsigned int new_alloc = 2 * wq->alloc + 1;
HANDLE *new_array =
(HANDLE *) realloc (wq->array, new_alloc * sizeof (HANDLE));
if (new_array == NULL)
/* No more memory. */
return INVALID_HANDLE_VALUE;
/* Now is a good opportunity to rotate the array so that its contents
starts at offset 0. */
if (wq->offset > 0)
{
unsigned int old_count = wq->count;
unsigned int old_alloc = wq->alloc;
unsigned int old_offset = wq->offset;
unsigned int i;
if (old_offset + old_count > old_alloc)
{
unsigned int limit = old_offset + old_count - old_alloc;
for (i = 0; i < limit; i++)
new_array[old_alloc + i] = new_array[i];
}
for (i = 0; i < old_count; i++)
new_array[i] = new_array[old_offset + i];
wq->offset = 0;
}
wq->array = new_array;
wq->alloc = new_alloc;
}
event = CreateEvent (NULL, TRUE, FALSE, NULL);
if (event == INVALID_HANDLE_VALUE)
/* No way to allocate an event. */
return INVALID_HANDLE_VALUE;
index = wq->offset + wq->count;
if (index >= wq->alloc)
index -= wq->alloc;
wq->array[index] = event;
wq->count++;
return event;
}
/* Notifies the first thread from a wait queue and dequeues it. */
static inline void
gl_waitqueue_notify_first (gl_waitqueue_t *wq)
{
SetEvent (wq->array[wq->offset + 0]);
wq->offset++;
wq->count--;
if (wq->count == 0 || wq->offset == wq->alloc)
wq->offset = 0;
}
/* Notifies all threads from a wait queue and dequeues them all. */
static inline void
gl_waitqueue_notify_all (gl_waitqueue_t *wq)
{
unsigned int i;
for (i = 0; i < wq->count; i++)
{
unsigned int index = wq->offset + i;
if (index >= wq->alloc)
index -= wq->alloc;
SetEvent (wq->array[index]);
}
wq->count = 0;
wq->offset = 0;
}
void
glthread_rwlock_init (gl_rwlock_t *lock)
{
InitializeCriticalSection (&lock->lock);
gl_waitqueue_init (&lock->waiting_readers);
gl_waitqueue_init (&lock->waiting_writers);
lock->runcount = 0;
lock->guard.done = 1;
}
void
glthread_rwlock_rdlock (gl_rwlock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_rwlock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
/* Test whether only readers are currently running, and whether the runcount
field will not overflow. */
if (!(lock->runcount + 1 > 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_readers. */
HANDLE event = gl_waitqueue_add (&lock->waiting_readers);
if (event != INVALID_HANDLE_VALUE)
{
DWORD result;
LeaveCriticalSection (&lock->lock);
/* Wait until another thread signals this event. */
result = WaitForSingleObject (event, INFINITE);
if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
abort ();
CloseHandle (event);
/* The thread which signalled the event already did the bookkeeping:
removed us from the waiting_readers, incremented lock->runcount. */
if (!(lock->runcount > 0))
abort ();
return;
}
else
{
/* Allocation failure. Weird. */
do
{
LeaveCriticalSection (&lock->lock);
Sleep (1);
EnterCriticalSection (&lock->lock);
}
while (!(lock->runcount + 1 > 0));
}
}
lock->runcount++;
LeaveCriticalSection (&lock->lock);
}
void
glthread_rwlock_wrlock (gl_rwlock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_rwlock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
EnterCriticalSection (&lock->lock);
/* Test whether no readers or writers are currently running. */
if (!(lock->runcount == 0))
{
/* This thread has to wait for a while. Enqueue it among the
waiting_writers. */
HANDLE event = gl_waitqueue_add (&lock->waiting_writers);
if (event != INVALID_HANDLE_VALUE)
{
DWORD result;
LeaveCriticalSection (&lock->lock);
/* Wait until another thread signals this event. */
result = WaitForSingleObject (event, INFINITE);
if (result == WAIT_FAILED || result == WAIT_TIMEOUT)
abort ();
CloseHandle (event);
/* The thread which signalled the event already did the bookkeeping:
removed us from the waiting_writers, set lock->runcount = -1. */
if (!(lock->runcount == -1))
abort ();
return;
}
else
{
/* Allocation failure. Weird. */
do
{
LeaveCriticalSection (&lock->lock);
Sleep (1);
EnterCriticalSection (&lock->lock);
}
while (!(lock->runcount == 0));
}
}
lock->runcount--; /* runcount becomes -1 */
LeaveCriticalSection (&lock->lock);
}
void
glthread_rwlock_unlock (gl_rwlock_t *lock)
{
if (!lock->guard.done)
abort ();
EnterCriticalSection (&lock->lock);
if (lock->runcount < 0)
{
/* Drop a writer lock. */
if (!(lock->runcount == -1))
abort ();
lock->runcount = 0;
}
else
{
/* Drop a reader lock. */
if (!(lock->runcount > 0))
abort ();
lock->runcount--;
}
if (lock->runcount == 0)
{
/* POSIX recommends that "write locks shall take precedence over read
locks", to avoid "writer starvation". */
if (lock->waiting_writers.count > 0)
{
/* Wake up one of the waiting writers. */
lock->runcount--;
gl_waitqueue_notify_first (&lock->waiting_writers);
}
else
{
/* Wake up all waiting readers. */
lock->runcount += lock->waiting_readers.count;
gl_waitqueue_notify_all (&lock->waiting_readers);
}
}
LeaveCriticalSection (&lock->lock);
}
void
glthread_rwlock_destroy (gl_rwlock_t *lock)
{
if (!lock->guard.done)
abort ();
if (lock->runcount != 0)
abort ();
DeleteCriticalSection (&lock->lock);
if (lock->waiting_readers.array != NULL)
free (lock->waiting_readers.array);
if (lock->waiting_writers.array != NULL)
free (lock->waiting_writers.array);
lock->guard.done = 0;
}
/* --------------------- gl_recursive_lock_t datatype --------------------- */
void
glthread_recursive_lock_init (gl_recursive_lock_t *lock)
{
lock->owner = 0;
lock->depth = 0;
InitializeCriticalSection (&lock->lock);
lock->guard.done = 1;
}
void
glthread_recursive_lock_lock (gl_recursive_lock_t *lock)
{
if (!lock->guard.done)
{
if (InterlockedIncrement (&lock->guard.started) == 0)
/* This thread is the first one to need this lock. Initialize it. */
glthread_recursive_lock_init (lock);
else
/* Yield the CPU while waiting for another thread to finish
initializing this lock. */
while (!lock->guard.done)
Sleep (0);
}
{
DWORD self = GetCurrentThreadId ();
if (lock->owner != self)
{
EnterCriticalSection (&lock->lock);
lock->owner = self;
}
if (++(lock->depth) == 0) /* wraparound? */
abort ();
}
}
void
glthread_recursive_lock_unlock (gl_recursive_lock_t *lock)
{
if (lock->owner != GetCurrentThreadId ())
abort ();
if (lock->depth == 0)
abort ();
if (--(lock->depth) == 0)
{
lock->owner = 0;
LeaveCriticalSection (&lock->lock);
}
}
void
glthread_recursive_lock_destroy (gl_recursive_lock_t *lock)
{
if (lock->owner != 0)
abort ();
DeleteCriticalSection (&lock->lock);
lock->guard.done = 0;
}
/* -------------------------- gl_once_t datatype -------------------------- */
void
glthread_once (gl_once_t *once_control, void (*initfunction) (void))
{
if (once_control->inited <= 0)
{
if (InterlockedIncrement (&once_control->started) == 0)
{
/* This thread is the first one to come to this once_control. */
InitializeCriticalSection (&once_control->lock);
EnterCriticalSection (&once_control->lock);
once_control->inited = 0;
initfunction ();
once_control->inited = 1;
LeaveCriticalSection (&once_control->lock);
}
else
{
/* Undo last operation. */
InterlockedDecrement (&once_control->started);
/* Some other thread has already started the initialization.
Yield the CPU while waiting for the other thread to finish
initializing and taking the lock. */
while (once_control->inited < 0)
Sleep (0);
if (once_control->inited <= 0)
{
/* Take the lock. This blocks until the other thread has
finished calling the initfunction. */
EnterCriticalSection (&once_control->lock);
LeaveCriticalSection (&once_control->lock);
if (!(once_control->inited > 0))
abort ();
}
}
}
}
#endif
/* ========================================================================= */

801
intl/lock.h Normal file
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@ -0,0 +1,801 @@
/* Locking in multithreaded situations.
Copyright (C) 2005 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005.
Based on GCC's gthr-posix.h, gthr-posix95.h, gthr-solaris.h,
gthr-win32.h. */
/* This file contains locking primitives for use with a given thread library.
It does not contain primitives for creating threads or for other
synchronization primitives.
Normal (non-recursive) locks:
Type: gl_lock_t
Declaration: gl_lock_define(extern, name)
Initializer: gl_lock_define_initialized(, name)
Initialization: gl_lock_init (name);
Taking the lock: gl_lock_lock (name);
Releasing the lock: gl_lock_unlock (name);
De-initialization: gl_lock_destroy (name);
Read-Write (non-recursive) locks:
Type: gl_rwlock_t
Declaration: gl_rwlock_define(extern, name)
Initializer: gl_rwlock_define_initialized(, name)
Initialization: gl_rwlock_init (name);
Taking the lock: gl_rwlock_rdlock (name);
gl_rwlock_wrlock (name);
Releasing the lock: gl_rwlock_unlock (name);
De-initialization: gl_rwlock_destroy (name);
Recursive locks:
Type: gl_recursive_lock_t
Declaration: gl_recursive_lock_define(extern, name)
Initializer: gl_recursive_lock_define_initialized(, name)
Initialization: gl_recursive_lock_init (name);
Taking the lock: gl_recursive_lock_lock (name);
Releasing the lock: gl_recursive_lock_unlock (name);
De-initialization: gl_recursive_lock_destroy (name);
Once-only execution:
Type: gl_once_t
Initializer: gl_once_define(extern, name)
Execution: gl_once (name, initfunction);
*/
#ifndef _LOCK_H
#define _LOCK_H
/* ========================================================================= */
#if USE_POSIX_THREADS
/* Use the POSIX threads library. */
# include <pthread.h>
# include <stdlib.h>
# if PTHREAD_IN_USE_DETECTION_HARD
/* The pthread_in_use() detection needs to be done at runtime. */
# define pthread_in_use() \
glthread_in_use ()
extern int glthread_in_use (void);
# endif
# if USE_POSIX_THREADS_WEAK
/* Use weak references to the POSIX threads library. */
/* Weak references avoid dragging in external libraries if the other parts
of the program don't use them. Here we use them, because we don't want
every program that uses libintl to depend on libpthread. This assumes
that libpthread would not be loaded after libintl; i.e. if libintl is
loaded first, by an executable that does not depend on libpthread, and
then a module is dynamically loaded that depends on libpthread, libintl
will not be multithread-safe. */
/* The way to test at runtime whether libpthread is present is to test
whether a function pointer's value, such as &pthread_mutex_init, is
non-NULL. However, some versions of GCC have a bug through which, in
PIC mode, &foo != NULL always evaluates to true if there is a direct
call to foo(...) in the same function. To avoid this, we test the
address of a function in libpthread that we don't use. */
# pragma weak pthread_mutex_init
# pragma weak pthread_mutex_lock
# pragma weak pthread_mutex_unlock
# pragma weak pthread_mutex_destroy
# pragma weak pthread_rwlock_init
# pragma weak pthread_rwlock_rdlock
# pragma weak pthread_rwlock_wrlock
# pragma weak pthread_rwlock_unlock
# pragma weak pthread_rwlock_destroy
# pragma weak pthread_once
# pragma weak pthread_cond_init
# pragma weak pthread_cond_wait
# pragma weak pthread_cond_signal
# pragma weak pthread_cond_broadcast
# pragma weak pthread_cond_destroy
# pragma weak pthread_mutexattr_init
# pragma weak pthread_mutexattr_settype
# pragma weak pthread_mutexattr_destroy
# ifndef pthread_self
# pragma weak pthread_self
# endif
# if !PTHREAD_IN_USE_DETECTION_HARD
# pragma weak pthread_cancel
# define pthread_in_use() (pthread_cancel != NULL)
# endif
# else
# if !PTHREAD_IN_USE_DETECTION_HARD
# define pthread_in_use() 1
# endif
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef pthread_mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_mutex_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pthread_mutex_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
PTHREAD_MUTEX_INITIALIZER
# define gl_lock_init(NAME) \
if (pthread_in_use () && pthread_mutex_init (&NAME, NULL) != 0) abort ()
# define gl_lock_lock(NAME) \
if (pthread_in_use () && pthread_mutex_lock (&NAME) != 0) abort ()
# define gl_lock_unlock(NAME) \
if (pthread_in_use () && pthread_mutex_unlock (&NAME) != 0) abort ()
# define gl_lock_destroy(NAME) \
if (pthread_in_use () && pthread_mutex_destroy (&NAME) != 0) abort ()
/* ------------------------- gl_rwlock_t datatype ------------------------- */
# if HAVE_PTHREAD_RWLOCK
# ifdef PTHREAD_RWLOCK_INITIALIZER
typedef pthread_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pthread_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
PTHREAD_RWLOCK_INITIALIZER
# define gl_rwlock_init(NAME) \
if (pthread_in_use () && pthread_rwlock_init (&NAME, NULL) != 0) abort ()
# define gl_rwlock_rdlock(NAME) \
if (pthread_in_use () && pthread_rwlock_rdlock (&NAME) != 0) abort ()
# define gl_rwlock_wrlock(NAME) \
if (pthread_in_use () && pthread_rwlock_wrlock (&NAME) != 0) abort ()
# define gl_rwlock_unlock(NAME) \
if (pthread_in_use () && pthread_rwlock_unlock (&NAME) != 0) abort ()
# define gl_rwlock_destroy(NAME) \
if (pthread_in_use () && pthread_rwlock_destroy (&NAME) != 0) abort ()
# else
typedef struct
{
int initialized;
pthread_mutex_t guard; /* protects the initialization */
pthread_rwlock_t rwlock; /* read-write lock */
}
gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
{ 0, PTHREAD_MUTEX_INITIALIZER }
# define gl_rwlock_init(NAME) \
if (pthread_in_use ()) glthread_rwlock_init (&NAME)
# define gl_rwlock_rdlock(NAME) \
if (pthread_in_use ()) glthread_rwlock_rdlock (&NAME)
# define gl_rwlock_wrlock(NAME) \
if (pthread_in_use ()) glthread_rwlock_wrlock (&NAME)
# define gl_rwlock_unlock(NAME) \
if (pthread_in_use ()) glthread_rwlock_unlock (&NAME)
# define gl_rwlock_destroy(NAME) \
if (pthread_in_use ()) glthread_rwlock_destroy (&NAME)
extern void glthread_rwlock_init (gl_rwlock_t *lock);
extern void glthread_rwlock_rdlock (gl_rwlock_t *lock);
extern void glthread_rwlock_wrlock (gl_rwlock_t *lock);
extern void glthread_rwlock_unlock (gl_rwlock_t *lock);
extern void glthread_rwlock_destroy (gl_rwlock_t *lock);
# endif
# else
typedef struct
{
pthread_mutex_t lock; /* protects the remaining fields */
pthread_cond_t waiting_readers; /* waiting readers */
pthread_cond_t waiting_writers; /* waiting writers */
unsigned int waiting_writers_count; /* number of waiting writers */
int runcount; /* number of readers running, or -1 when a writer runs */
}
gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
{ PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, PTHREAD_COND_INITIALIZER, 0, 0 }
# define gl_rwlock_init(NAME) \
if (pthread_in_use ()) glthread_rwlock_init (&NAME)
# define gl_rwlock_rdlock(NAME) \
if (pthread_in_use ()) glthread_rwlock_rdlock (&NAME)
# define gl_rwlock_wrlock(NAME) \
if (pthread_in_use ()) glthread_rwlock_wrlock (&NAME)
# define gl_rwlock_unlock(NAME) \
if (pthread_in_use ()) glthread_rwlock_unlock (&NAME)
# define gl_rwlock_destroy(NAME) \
if (pthread_in_use ()) glthread_rwlock_destroy (&NAME)
extern void glthread_rwlock_init (gl_rwlock_t *lock);
extern void glthread_rwlock_rdlock (gl_rwlock_t *lock);
extern void glthread_rwlock_wrlock (gl_rwlock_t *lock);
extern void glthread_rwlock_unlock (gl_rwlock_t *lock);
extern void glthread_rwlock_destroy (gl_rwlock_t *lock);
# endif
/* --------------------- gl_recursive_lock_t datatype --------------------- */
# if HAVE_PTHREAD_MUTEX_RECURSIVE
# if defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER || defined PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
typedef pthread_mutex_t gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_mutex_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pthread_mutex_t NAME = gl_recursive_lock_initializer;
# ifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER
# define gl_recursive_lock_initializer \
PTHREAD_RECURSIVE_MUTEX_INITIALIZER
# else
# define gl_recursive_lock_initializer \
PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
# endif
# define gl_recursive_lock_init(NAME) \
if (pthread_in_use () && pthread_mutex_init (&NAME, NULL) != 0) abort ()
# define gl_recursive_lock_lock(NAME) \
if (pthread_in_use () && pthread_mutex_lock (&NAME) != 0) abort ()
# define gl_recursive_lock_unlock(NAME) \
if (pthread_in_use () && pthread_mutex_unlock (&NAME) != 0) abort ()
# define gl_recursive_lock_destroy(NAME) \
if (pthread_in_use () && pthread_mutex_destroy (&NAME) != 0) abort ()
# else
typedef struct
{
pthread_mutex_t recmutex; /* recursive mutex */
pthread_mutex_t guard; /* protects the initialization */
int initialized;
}
gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
{ PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, 0 }
# define gl_recursive_lock_init(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_init (&NAME)
# define gl_recursive_lock_lock(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_lock (&NAME)
# define gl_recursive_lock_unlock(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_unlock (&NAME)
# define gl_recursive_lock_destroy(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_destroy (&NAME)
extern void glthread_recursive_lock_init (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
# endif
# else
/* Old versions of POSIX threads on Solaris did not have recursive locks.
We have to implement them ourselves. */
typedef struct
{
pthread_mutex_t mutex;
pthread_t owner;
unsigned long depth;
}
gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
{ PTHREAD_MUTEX_INITIALIZER, (pthread_t) 0, 0 }
# define gl_recursive_lock_init(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_init (&NAME)
# define gl_recursive_lock_lock(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_lock (&NAME)
# define gl_recursive_lock_unlock(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_unlock (&NAME)
# define gl_recursive_lock_destroy(NAME) \
if (pthread_in_use ()) glthread_recursive_lock_destroy (&NAME)
extern void glthread_recursive_lock_init (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
# endif
/* -------------------------- gl_once_t datatype -------------------------- */
typedef pthread_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS pthread_once_t NAME = PTHREAD_ONCE_INIT;
# define gl_once(NAME, INITFUNCTION) \
do \
{ \
if (pthread_in_use ()) \
{ \
if (pthread_once (&NAME, INITFUNCTION) != 0) \
abort (); \
} \
else \
{ \
if (glthread_once_singlethreaded (&NAME)) \
INITFUNCTION (); \
} \
} \
while (0)
extern int glthread_once_singlethreaded (pthread_once_t *once_control);
#endif
/* ========================================================================= */
#if USE_PTH_THREADS
/* Use the GNU Pth threads library. */
# include <pth.h>
# include <stdlib.h>
# if USE_PTH_THREADS_WEAK
/* Use weak references to the GNU Pth threads library. */
# pragma weak pth_mutex_init
# pragma weak pth_mutex_acquire
# pragma weak pth_mutex_release
# pragma weak pth_rwlock_init
# pragma weak pth_rwlock_acquire
# pragma weak pth_rwlock_release
# pragma weak pth_once
# pragma weak pth_cancel
# define pth_in_use() (pth_cancel != NULL)
# else
# define pth_in_use() 1
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef pth_mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
PTH_MUTEX_INIT
# define gl_lock_init(NAME) \
if (pth_in_use() && !pth_mutex_init (&NAME)) abort ()
# define gl_lock_lock(NAME) \
if (pth_in_use() && !pth_mutex_acquire (&NAME, 0, NULL)) abort ()
# define gl_lock_unlock(NAME) \
if (pth_in_use() && !pth_mutex_release (&NAME)) abort ()
# define gl_lock_destroy(NAME) \
(void)(&NAME)
/* ------------------------- gl_rwlock_t datatype ------------------------- */
typedef pth_rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS pth_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pth_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
PTH_RWLOCK_INIT
# define gl_rwlock_init(NAME) \
if (pth_in_use() && !pth_rwlock_init (&NAME)) abort ()
# define gl_rwlock_rdlock(NAME) \
if (pth_in_use() && !pth_rwlock_acquire (&NAME, PTH_RWLOCK_RD, 0, NULL)) abort ()
# define gl_rwlock_wrlock(NAME) \
if (pth_in_use() && !pth_rwlock_acquire (&NAME, PTH_RWLOCK_RW, 0, NULL)) abort ()
# define gl_rwlock_unlock(NAME) \
if (pth_in_use() && !pth_rwlock_release (&NAME)) abort ()
# define gl_rwlock_destroy(NAME) \
(void)(&NAME)
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* In Pth, mutexes are recursive by default. */
typedef pth_mutex_t gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS pth_mutex_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
PTH_MUTEX_INIT
# define gl_recursive_lock_init(NAME) \
if (pth_in_use() && !pth_mutex_init (&NAME)) abort ()
# define gl_recursive_lock_lock(NAME) \
if (pth_in_use() && !pth_mutex_acquire (&NAME, 0, NULL)) abort ()
# define gl_recursive_lock_unlock(NAME) \
if (pth_in_use() && !pth_mutex_release (&NAME)) abort ()
# define gl_recursive_lock_destroy(NAME) \
(void)(&NAME)
/* -------------------------- gl_once_t datatype -------------------------- */
typedef pth_once_t gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS pth_once_t NAME = PTH_ONCE_INIT;
# define gl_once(NAME, INITFUNCTION) \
do \
{ \
if (pth_in_use ()) \
{ \
void (*gl_once_temp) (void) = INITFUNCTION; \
if (!pth_once (&NAME, glthread_once_call, &gl_once_temp)) \
abort (); \
} \
else \
{ \
if (glthread_once_singlethreaded (&NAME)) \
INITFUNCTION (); \
} \
} \
while (0)
extern void glthread_once_call (void *arg);
extern int glthread_once_singlethreaded (pth_once_t *once_control);
#endif
/* ========================================================================= */
#if USE_SOLARIS_THREADS
/* Use the old Solaris threads library. */
# include <thread.h>
# include <synch.h>
# include <stdlib.h>
# if USE_SOLARIS_THREADS_WEAK
/* Use weak references to the old Solaris threads library. */
# pragma weak mutex_init
# pragma weak mutex_lock
# pragma weak mutex_unlock
# pragma weak mutex_destroy
# pragma weak rwlock_init
# pragma weak rw_rdlock
# pragma weak rw_wrlock
# pragma weak rw_unlock
# pragma weak rwlock_destroy
# pragma weak thr_self
# pragma weak thr_suspend
# define thread_in_use() (thr_suspend != NULL)
# else
# define thread_in_use() 1
# endif
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef mutex_t gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS mutex_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS mutex_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
DEFAULTMUTEX
# define gl_lock_init(NAME) \
if (thread_in_use () && mutex_init (&NAME, USYNC_THREAD, NULL) != 0) abort ()
# define gl_lock_lock(NAME) \
if (thread_in_use () && mutex_lock (&NAME) != 0) abort ()
# define gl_lock_unlock(NAME) \
if (thread_in_use () && mutex_unlock (&NAME) != 0) abort ()
# define gl_lock_destroy(NAME) \
if (thread_in_use () && mutex_destroy (&NAME) != 0) abort ()
/* ------------------------- gl_rwlock_t datatype ------------------------- */
typedef rwlock_t gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
DEFAULTRWLOCK
# define gl_rwlock_init(NAME) \
if (thread_in_use () && rwlock_init (&NAME, USYNC_THREAD, NULL) != 0) abort ()
# define gl_rwlock_rdlock(NAME) \
if (thread_in_use () && rw_rdlock (&NAME) != 0) abort ()
# define gl_rwlock_wrlock(NAME) \
if (thread_in_use () && rw_wrlock (&NAME) != 0) abort ()
# define gl_rwlock_unlock(NAME) \
if (thread_in_use () && rw_unlock (&NAME) != 0) abort ()
# define gl_rwlock_destroy(NAME) \
if (thread_in_use () && rwlock_destroy (&NAME) != 0) abort ()
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* Old Solaris threads did not have recursive locks.
We have to implement them ourselves. */
typedef struct
{
mutex_t mutex;
thread_t owner;
unsigned long depth;
}
gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
{ DEFAULTMUTEX, (thread_t) 0, 0 }
# define gl_recursive_lock_init(NAME) \
if (thread_in_use ()) glthread_recursive_lock_init (&NAME)
# define gl_recursive_lock_lock(NAME) \
if (thread_in_use ()) glthread_recursive_lock_lock (&NAME)
# define gl_recursive_lock_unlock(NAME) \
if (thread_in_use ()) glthread_recursive_lock_unlock (&NAME)
# define gl_recursive_lock_destroy(NAME) \
if (thread_in_use ()) glthread_recursive_lock_destroy (&NAME)
extern void glthread_recursive_lock_init (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
/* -------------------------- gl_once_t datatype -------------------------- */
typedef struct
{
volatile int inited;
mutex_t mutex;
}
gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS gl_once_t NAME = { 0, DEFAULTMUTEX };
# define gl_once(NAME, INITFUNCTION) \
do \
{ \
if (thread_in_use ()) \
{ \
glthread_once (&NAME, INITFUNCTION); \
} \
else \
{ \
if (glthread_once_singlethreaded (&NAME)) \
INITFUNCTION (); \
} \
} \
while (0)
extern void glthread_once (gl_once_t *once_control, void (*initfunction) (void));
extern int glthread_once_singlethreaded (gl_once_t *once_control);
#endif
/* ========================================================================= */
#if USE_WIN32_THREADS
# include <windows.h>
/* We can use CRITICAL_SECTION directly, rather than the Win32 Event, Mutex,
Semaphore types, because
- we need only to synchronize inside a single process (address space),
not inter-process locking,
- we don't need to support trylock operations. (TryEnterCriticalSection
does not work on Windows 95/98/ME. Packages that need trylock usually
define their own mutex type.) */
/* There is no way to statically initialize a CRITICAL_SECTION. It needs
to be done lazily, once only. For this we need spinlocks. */
typedef struct { volatile int done; volatile long started; } gl_spinlock_t;
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef struct
{
gl_spinlock_t guard; /* protects the initialization */
CRITICAL_SECTION lock;
}
gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME;
# define gl_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_lock_t NAME = gl_lock_initializer;
# define gl_lock_initializer \
{ { 0, -1 } }
# define gl_lock_init(NAME) \
glthread_lock_init (&NAME)
# define gl_lock_lock(NAME) \
glthread_lock_lock (&NAME)
# define gl_lock_unlock(NAME) \
glthread_lock_unlock (&NAME)
# define gl_lock_destroy(NAME) \
glthread_lock_destroy (&NAME)
extern void glthread_lock_init (gl_lock_t *lock);
extern void glthread_lock_lock (gl_lock_t *lock);
extern void glthread_lock_unlock (gl_lock_t *lock);
extern void glthread_lock_destroy (gl_lock_t *lock);
/* ------------------------- gl_rwlock_t datatype ------------------------- */
/* It is impossible to implement read-write locks using plain locks, without
introducing an extra thread dedicated to managing read-write locks.
Therefore here we need to use the low-level Event type. */
typedef struct
{
HANDLE *array; /* array of waiting threads, each represented by an event */
unsigned int count; /* number of waiting threads */
unsigned int alloc; /* length of allocated array */
unsigned int offset; /* index of first waiting thread in array */
}
gl_waitqueue_t;
typedef struct
{
gl_spinlock_t guard; /* protects the initialization */
CRITICAL_SECTION lock; /* protects the remaining fields */
gl_waitqueue_t waiting_readers; /* waiting readers */
gl_waitqueue_t waiting_writers; /* waiting writers */
int runcount; /* number of readers running, or -1 when a writer runs */
}
gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME;
# define gl_rwlock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_rwlock_t NAME = gl_rwlock_initializer;
# define gl_rwlock_initializer \
{ { 0, -1 } }
# define gl_rwlock_init(NAME) \
glthread_rwlock_init (&NAME)
# define gl_rwlock_rdlock(NAME) \
glthread_rwlock_rdlock (&NAME)
# define gl_rwlock_wrlock(NAME) \
glthread_rwlock_wrlock (&NAME)
# define gl_rwlock_unlock(NAME) \
glthread_rwlock_unlock (&NAME)
# define gl_rwlock_destroy(NAME) \
glthread_rwlock_destroy (&NAME)
extern void glthread_rwlock_init (gl_rwlock_t *lock);
extern void glthread_rwlock_rdlock (gl_rwlock_t *lock);
extern void glthread_rwlock_wrlock (gl_rwlock_t *lock);
extern void glthread_rwlock_unlock (gl_rwlock_t *lock);
extern void glthread_rwlock_destroy (gl_rwlock_t *lock);
/* --------------------- gl_recursive_lock_t datatype --------------------- */
/* The Win32 documentation says that CRITICAL_SECTION already implements a
recursive lock. But we need not rely on it: It's easy to implement a
recursive lock without this assumption. */
typedef struct
{
gl_spinlock_t guard; /* protects the initialization */
DWORD owner;
unsigned long depth;
CRITICAL_SECTION lock;
}
gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME;
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME) \
STORAGECLASS gl_recursive_lock_t NAME = gl_recursive_lock_initializer;
# define gl_recursive_lock_initializer \
{ { 0, -1 }, 0, 0 }
# define gl_recursive_lock_init(NAME) \
glthread_recursive_lock_init (&NAME)
# define gl_recursive_lock_lock(NAME) \
glthread_recursive_lock_lock (&NAME)
# define gl_recursive_lock_unlock(NAME) \
glthread_recursive_lock_unlock (&NAME)
# define gl_recursive_lock_destroy(NAME) \
glthread_recursive_lock_destroy (&NAME)
extern void glthread_recursive_lock_init (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_lock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_unlock (gl_recursive_lock_t *lock);
extern void glthread_recursive_lock_destroy (gl_recursive_lock_t *lock);
/* -------------------------- gl_once_t datatype -------------------------- */
typedef struct
{
volatile int inited;
volatile long started;
CRITICAL_SECTION lock;
}
gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS gl_once_t NAME = { -1, -1 };
# define gl_once(NAME, INITFUNCTION) \
glthread_once (&NAME, INITFUNCTION)
extern void glthread_once (gl_once_t *once_control, void (*initfunction) (void));
#endif
/* ========================================================================= */
#if !(USE_POSIX_THREADS || USE_PTH_THREADS || USE_SOLARIS_THREADS || USE_WIN32_THREADS)
/* Provide dummy implementation if threads are not supported. */
/* -------------------------- gl_lock_t datatype -------------------------- */
typedef int gl_lock_t;
# define gl_lock_define(STORAGECLASS, NAME)
# define gl_lock_define_initialized(STORAGECLASS, NAME)
# define gl_lock_init(NAME)
# define gl_lock_lock(NAME)
# define gl_lock_unlock(NAME)
/* ------------------------- gl_rwlock_t datatype ------------------------- */
typedef int gl_rwlock_t;
# define gl_rwlock_define(STORAGECLASS, NAME)
# define gl_rwlock_define_initialized(STORAGECLASS, NAME)
# define gl_rwlock_init(NAME)
# define gl_rwlock_rdlock(NAME)
# define gl_rwlock_wrlock(NAME)
# define gl_rwlock_unlock(NAME)
/* --------------------- gl_recursive_lock_t datatype --------------------- */
typedef int gl_recursive_lock_t;
# define gl_recursive_lock_define(STORAGECLASS, NAME)
# define gl_recursive_lock_define_initialized(STORAGECLASS, NAME)
# define gl_recursive_lock_init(NAME)
# define gl_recursive_lock_lock(NAME)
# define gl_recursive_lock_unlock(NAME)
/* -------------------------- gl_once_t datatype -------------------------- */
typedef int gl_once_t;
# define gl_once_define(STORAGECLASS, NAME) \
STORAGECLASS gl_once_t NAME = 0;
# define gl_once(NAME, INITFUNCTION) \
do \
{ \
if (NAME == 0) \
{ \
NAME = ~ 0; \
INITFUNCTION (); \
} \
} \
while (0)
#endif
/* ========================================================================= */
#endif /* _LOCK_H */

26
intl/version.c Normal file
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/* libintl library version.
Copyright (C) 2005 Free Software Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "libgnuintl.h"
/* Version number: (major<<16) + (minor<<8) + subminor */
int libintl_version = LIBINTL_VERSION;

30
m4/glibc2.m4 Normal file
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# glibc2.m4 serial 1
dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
# Test for the GNU C Library, version 2.0 or newer.
# From Bruno Haible.
AC_DEFUN([gt_GLIBC2],
[
AC_CACHE_CHECK(whether we are using the GNU C Library 2 or newer,
ac_cv_gnu_library_2,
[AC_EGREP_CPP([Lucky GNU user],
[
#include <features.h>
#ifdef __GNU_LIBRARY__
#if (__GLIBC__ >= 2)
Lucky GNU user
#endif
#endif
],
ac_cv_gnu_library_2=yes,
ac_cv_gnu_library_2=no)
]
)
AC_SUBST(GLIBC2)
GLIBC2="$ac_cv_gnu_library_2"
]
)

69
m4/libusb.m4 Normal file
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dnl Check for libusb
dnl Copyright (C) 2004, 2005 Free Software Foundation, Inc.
dnl
dnl This file is free software, distributed under the terms of the GNU
dnl General Public License. As a special exception to the GNU General
dnl Public License, this file may be distributed as part of a program
dnl that contains a configuration script generated by Autoconf, under
dnl the same distribution terms as the rest of that program.
dnl
dnl Defines HAVE_LIBUSB to 1 if a working libusb setup is found, and sets
dnl @LIBUSB@ to the necessary libraries. HAVE_USB_GET_BUSSES is set if
dnl usb_get_busses() exists.
AC_DEFUN([GNUPG_CHECK_LIBUSB],
[
AC_ARG_WITH(libusb,
AC_HELP_STRING([--with-libusb=DIR],
[look for the libusb library in DIR]),
[_do_libusb=$withval],[_do_libusb=yes])
if test "$_do_libusb" != "no" ; then
if test -d "$withval" ; then
CPPFLAGS="${CPPFLAGS} -I$withval/include"
LDFLAGS="${LDFLAGS} -L$withval/lib"
AC_PATH_PROG([_usb_config],["$_do_libusb/bin/libusb-config"])
else
AC_PATH_PROG([_usb_config],[libusb-config])
fi
_libusb_save_libs=$LIBS
_libusb_save_cflags=$CFLAGS
if test x$_usb_config != "x" ; then
_libusb_try_libs=`$LIBS $_usb_config --libs`
_libusb_try_cflags=`$LIBS $_usb_config --cflags`
else
_libusb_try_libs="-lusb"
_libusb_try_cflags=""
fi
LIBS="$LIBS $_libusb_try_libs"
CFLAGS="$CFLAGS $_libusb_try_cflags"
AC_MSG_CHECKING([whether libusb is present and sane])
AC_LINK_IFELSE(AC_LANG_PROGRAM([#include <usb.h>],[
usb_bulk_write(NULL,0,NULL,0,0);
]),_found_libusb=yes,_found_libusb=no)
AC_MSG_RESULT([$_found_libusb])
if test $_found_libusb = yes ; then
AC_DEFINE(HAVE_LIBUSB,1,
[Define to 1 if you have a fully functional libusb library.])
AC_SUBST(LIBUSB_CPPFLAGS,$_libusb_try_cflags)
AC_SUBST(LIBUSB,$_libusb_try_libs)
AC_CHECK_FUNCS(usb_get_busses)
fi
LIBS=$_libusb_save_libs
CFLAGS=$_libusb_save_cflags
unset _libusb_save_libs
unset _libusb_save_cflags
unset _libusb_try_libs
unset _libusb_try_cflags
unset _found_libusb
fi
])dnl

289
m4/lock.m4 Normal file
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# lock.m4 serial 2 (gettext-0.15)
dnl Copyright (C) 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
dnl Tests for a multithreading library to be used.
dnl Defines at most one of the macros USE_POSIX_THREADS, USE_SOLARIS_THREADS,
dnl USE_PTH_THREADS, USE_WIN32_THREADS
dnl Sets the variables LIBTHREAD and LTLIBTHREAD to the linker options for use
dnl in a Makefile (LIBTHREAD for use without libtool, LTLIBTHREAD for use with
dnl libtool).
dnl Sets the variables LIBMULTITHREAD and LTLIBMULTITHREAD similarly, for
dnl programs that really need multithread functionality. The difference
dnl between LIBTHREAD and LIBMULTITHREAD is that on platforms supporting weak
dnl symbols, typically LIBTHREAD="" whereas LIBMULTITHREAD="-lpthread".
dnl Adds to CPPFLAGS the flag -D_REENTRANT or -D_THREAD_SAFE if needed for
dnl multithread-safe programs.
AC_DEFUN([gl_LOCK],
[
AC_REQUIRE([gl_LOCK_BODY])
])
dnl The guts of gl_LOCK. Needs to be expanded only once.
AC_DEFUN([gl_LOCK_BODY],
[
dnl Ordering constraints: This macro modifies CPPFLAGS in a way that
dnl influences the result of the autoconf tests that test for *_unlocked
dnl declarations, on AIX 5 at least. Therefore it must come early.
AC_BEFORE([$0], [gl_FUNC_GLIBC_UNLOCKED_IO])dnl
AC_BEFORE([$0], [gl_ARGP])dnl
AC_REQUIRE([AC_CANONICAL_HOST])
AC_REQUIRE([AC_GNU_SOURCE]) dnl needed for pthread_rwlock_t on glibc systems
dnl Check for multithreading.
AC_ARG_ENABLE(threads,
AC_HELP_STRING([--enable-threads={posix|solaris|pth|win32}], [specify multithreading API])
AC_HELP_STRING([--disable-threads], [build without multithread safety]),
gl_use_threads=$enableval, gl_use_threads=yes)
gl_threads_api=none
LIBTHREAD=
LTLIBTHREAD=
LIBMULTITHREAD=
LTLIBMULTITHREAD=
if test "$gl_use_threads" != no; then
dnl Check whether the compiler and linker support weak declarations.
AC_MSG_CHECKING([whether imported symbols can be declared weak])
gl_have_weak=no
AC_TRY_LINK([extern void xyzzy ();
#pragma weak xyzzy], [xyzzy();], [gl_have_weak=yes])
AC_MSG_RESULT([$gl_have_weak])
if test "$gl_use_threads" = yes || test "$gl_use_threads" = posix; then
# On OSF/1, the compiler needs the flag -pthread or -D_REENTRANT so that
# it groks <pthread.h>.
gl_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -D_REENTRANT"
AC_CHECK_HEADER(pthread.h, gl_have_pthread_h=yes, gl_have_pthread_h=no)
CPPFLAGS="$gl_save_CPPFLAGS"
if test "$gl_have_pthread_h" = yes; then
# Other possible tests:
# -lpthreads (FSU threads, PCthreads)
# -lgthreads
case "$host_os" in
osf*)
# On OSF/1, the compiler needs the flag -D_REENTRANT so that it
# groks <pthread.h>. cc also understands the flag -pthread, but
# we don't use it because 1. gcc-2.95 doesn't understand -pthread,
# 2. putting a flag into CPPFLAGS that has an effect on the linker
# causes the AC_TRY_LINK test below to succeed unexpectedly,
# leading to wrong values of LIBTHREAD and LTLIBTHREAD.
CPPFLAGS="$CPPFLAGS -D_REENTRANT"
;;
esac
gl_have_pthread=
# Test whether both pthread_mutex_lock and pthread_mutexattr_init exist
# in libc. IRIX 6.5 has the first one in both libc and libpthread, but
# the second one only in libpthread, and lock.c needs it.
AC_TRY_LINK([#include <pthread.h>],
[pthread_mutex_lock((pthread_mutex_t*)0);
pthread_mutexattr_init((pthread_mutexattr_t*)0);],
[gl_have_pthread=yes])
# Test for libpthread by looking for pthread_kill. (Not pthread_self,
# since it is defined as a macro on OSF/1.)
if test -n "$gl_have_pthread"; then
# The program links fine without libpthread. But it may actually
# need to link with libpthread in order to create multiple threads.
AC_CHECK_LIB(pthread, pthread_kill,
[LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread
# On Solaris and HP-UX, most pthread functions exist also in libc.
# Therefore pthread_in_use() needs to actually try to create a
# thread: pthread_create from libc will fail, whereas
# pthread_create will actually create a thread.
case "$host_os" in
solaris* | hpux*)
AC_DEFINE([PTHREAD_IN_USE_DETECTION_HARD], 1,
[Define if the pthread_in_use() detection is hard.])
esac
])
else
# Some library is needed. Try libpthread and libc_r.
AC_CHECK_LIB(pthread, pthread_kill,
[gl_have_pthread=yes
LIBTHREAD=-lpthread LTLIBTHREAD=-lpthread
LIBMULTITHREAD=-lpthread LTLIBMULTITHREAD=-lpthread])
if test -z "$gl_have_pthread"; then
# For FreeBSD 4.
AC_CHECK_LIB(c_r, pthread_kill,
[gl_have_pthread=yes
LIBTHREAD=-lc_r LTLIBTHREAD=-lc_r
LIBMULTITHREAD=-lc_r LTLIBMULTITHREAD=-lc_r])
fi
fi
if test -n "$gl_have_pthread"; then
gl_threads_api=posix
AC_DEFINE([USE_POSIX_THREADS], 1,
[Define if the POSIX multithreading library can be used.])
if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then
if test $gl_have_weak = yes; then
AC_DEFINE([USE_POSIX_THREADS_WEAK], 1,
[Define if references to the POSIX multithreading library should be made weak.])
LIBTHREAD=
LTLIBTHREAD=
fi
fi
# OSF/1 4.0 and MacOS X 10.1 lack the pthread_rwlock_t type and the
# pthread_rwlock_* functions.
AC_CHECK_TYPE([pthread_rwlock_t],
[AC_DEFINE([HAVE_PTHREAD_RWLOCK], 1,
[Define if the POSIX multithreading library has read/write locks.])],
[],
[#include <pthread.h>])
# glibc defines PTHREAD_MUTEX_RECURSIVE as enum, not as a macro.
AC_TRY_COMPILE([#include <pthread.h>],
[#if __FreeBSD__ == 4
error "No, in FreeBSD 4.0 recursive mutexes actually don't work."
#else
int x = (int)PTHREAD_MUTEX_RECURSIVE;
#endif],
[AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE], 1,
[Define if the <pthread.h> defines PTHREAD_MUTEX_RECURSIVE.])])
# Some systems optimize for single-threaded programs by default, and
# need special flags to disable these optimizations. For example, the
# definition of 'errno' in <errno.h>.
case "$host_os" in
aix* | freebsd*) CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE" ;;
solaris*) CPPFLAGS="$CPPFLAGS -D_REENTRANT" ;;
esac
fi
fi
fi
if test -z "$gl_have_pthread"; then
if test "$gl_use_threads" = yes || test "$gl_use_threads" = solaris; then
gl_have_solaristhread=
gl_save_LIBS="$LIBS"
LIBS="$LIBS -lthread"
AC_TRY_LINK([#include <thread.h>
#include <synch.h>],
[thr_self();],
[gl_have_solaristhread=yes])
LIBS="$gl_save_LIBS"
if test -n "$gl_have_solaristhread"; then
gl_threads_api=solaris
LIBTHREAD=-lthread
LTLIBTHREAD=-lthread
LIBMULTITHREAD="$LIBTHREAD"
LTLIBMULTITHREAD="$LTLIBTHREAD"
AC_DEFINE([USE_SOLARIS_THREADS], 1,
[Define if the old Solaris multithreading library can be used.])
if test $gl_have_weak = yes; then
AC_DEFINE([USE_SOLARIS_THREADS_WEAK], 1,
[Define if references to the old Solaris multithreading library should be made weak.])
LIBTHREAD=
LTLIBTHREAD=
fi
fi
fi
fi
if test "$gl_use_threads" = pth; then
gl_save_CPPFLAGS="$CPPFLAGS"
AC_LIB_LINKFLAGS(pth)
gl_have_pth=
gl_save_LIBS="$LIBS"
LIBS="$LIBS -lpth"
AC_TRY_LINK([#include <pth.h>], [pth_self();], gl_have_pth=yes)
LIBS="$gl_save_LIBS"
if test -n "$gl_have_pth"; then
gl_threads_api=pth
LIBTHREAD="$LIBPTH"
LTLIBTHREAD="$LTLIBPTH"
LIBMULTITHREAD="$LIBTHREAD"
LTLIBMULTITHREAD="$LTLIBTHREAD"
AC_DEFINE([USE_PTH_THREADS], 1,
[Define if the GNU Pth multithreading library can be used.])
if test -n "$LIBMULTITHREAD" || test -n "$LTLIBMULTITHREAD"; then
if test $gl_have_weak = yes; then
AC_DEFINE([USE_PTH_THREADS_WEAK], 1,
[Define if references to the GNU Pth multithreading library should be made weak.])
LIBTHREAD=
LTLIBTHREAD=
fi
fi
else
CPPFLAGS="$gl_save_CPPFLAGS"
fi
fi
if test -z "$gl_have_pthread"; then
if test "$gl_use_threads" = yes || test "$gl_use_threads" = win32; then
if { case "$host_os" in
mingw*) true;;
*) false;;
esac
}; then
gl_threads_api=win32
AC_DEFINE([USE_WIN32_THREADS], 1,
[Define if the Win32 multithreading API can be used.])
fi
fi
fi
fi
AC_MSG_CHECKING([for multithread API to use])
AC_MSG_RESULT([$gl_threads_api])
AC_SUBST(LIBTHREAD)
AC_SUBST(LTLIBTHREAD)
AC_SUBST(LIBMULTITHREAD)
AC_SUBST(LTLIBMULTITHREAD)
gl_PREREQ_LOCK
])
# Prerequisites of lib/lock.c.
AC_DEFUN([gl_PREREQ_LOCK], [
AC_REQUIRE([AC_C_INLINE])
])
dnl Survey of platforms:
dnl
dnl Platform Available Compiler Supports test-lock
dnl flavours option weak result
dnl --------------- --------- --------- -------- ---------
dnl Linux 2.4/glibc posix -lpthread Y OK
dnl
dnl GNU Hurd/glibc posix
dnl
dnl FreeBSD 5.3 posix -lc_r Y
dnl posix -lkse ? Y
dnl posix -lpthread ? Y
dnl posix -lthr Y
dnl
dnl FreeBSD 5.2 posix -lc_r Y
dnl posix -lkse Y
dnl posix -lthr Y
dnl
dnl FreeBSD 4.0,4.10 posix -lc_r Y OK
dnl
dnl NetBSD 1.6 --
dnl
dnl OpenBSD 3.4 posix -lpthread Y OK
dnl
dnl MacOS X 10.[123] posix -lpthread Y OK
dnl
dnl Solaris 7,8,9 posix -lpthread Y Sol 7,8: 0.0; Sol 9: OK
dnl solaris -lthread Y Sol 7,8: 0.0; Sol 9: OK
dnl
dnl HP-UX 11 posix -lpthread N (cc) OK
dnl Y (gcc)
dnl
dnl IRIX 6.5 posix -lpthread Y 0.5
dnl
dnl AIX 4.3,5.1 posix -lpthread N AIX 4: 0.5; AIX 5: OK
dnl
dnl OSF/1 4.0,5.1 posix -pthread (cc) N OK
dnl -lpthread (gcc) Y
dnl
dnl Cygwin posix -lpthread Y OK
dnl
dnl Any of the above pth -lpth 0.0
dnl
dnl Mingw win32 N OK
dnl
dnl BeOS 5 --
dnl
dnl The test-lock result shows what happens if in test-lock.c EXPLICIT_YIELD is
dnl turned off:
dnl OK if all three tests terminate OK,
dnl 0.5 if the first test terminates OK but the second one loops endlessly,
dnl 0.0 if the first test already loops endlessly.

52
m4/visibility.m4 Normal file
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@ -0,0 +1,52 @@
# visibility.m4 serial 1 (gettext-0.15)
dnl Copyright (C) 2005 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible.
dnl Tests whether the compiler supports the command-line option
dnl -fvisibility=hidden and the function and variable attributes
dnl __attribute__((__visibility__("hidden"))) and
dnl __attribute__((__visibility__("default"))).
dnl Does *not* test for __visibility__("protected") - which has tricky
dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
dnl MacOS X.
dnl Does *not* test for __visibility__("internal") - which has processor
dnl dependent semantics.
dnl Does *not* test for #pragma GCC visibility push(hidden) - which is
dnl "really only recommended for legacy code".
dnl Set the variable CFLAG_VISIBILITY.
dnl Defines and sets the variable HAVE_VISIBILITY.
AC_DEFUN([gl_VISIBILITY],
[
AC_REQUIRE([AC_PROG_CC])
CFLAG_VISIBILITY=
HAVE_VISIBILITY=0
if test -n "$GCC"; then
AC_MSG_CHECKING([for simple visibility declarations])
AC_CACHE_VAL(gl_cv_cc_visibility, [
gl_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
AC_TRY_COMPILE(
[extern __attribute__((__visibility__("hidden"))) int hiddenvar;
extern __attribute__((__visibility__("default"))) int exportedvar;
extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
extern __attribute__((__visibility__("default"))) int exportedfunc (void);],
[],
gl_cv_cc_visibility=yes,
gl_cv_cc_visibility=no)
CFLAGS="$gl_save_CFLAGS"])
AC_MSG_RESULT([$gl_cv_cc_visibility])
if test $gl_cv_cc_visibility = yes; then
CFLAG_VISIBILITY="-fvisibility=hidden"
HAVE_VISIBILITY=1
fi
fi
AC_SUBST([CFLAG_VISIBILITY])
AC_SUBST([HAVE_VISIBILITY])
AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY],
[Define to 1 or 0, depending whether the compiler supports simple visibility declarations.])
])