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-rw-r--r--libpthread/nptl/ANNOUNCE92
-rw-r--r--libpthread/nptl/DESIGN-barrier.txt44
-rw-r--r--libpthread/nptl/DESIGN-condvar.txt134
-rw-r--r--libpthread/nptl/DESIGN-rwlock.txt113
-rw-r--r--libpthread/nptl/DESIGN-sem.txt46
-rw-r--r--libpthread/nptl/TODO12
-rw-r--r--libpthread/nptl/TODO-kernel20
-rw-r--r--libpthread/nptl/TODO-testing20
-rw-r--r--libpthread/nptl/pt-allocrtsig.c51
-rw-r--r--libpthread/nptl/sysdeps/pthread/pt-longjmp.c29
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/aio_misc.h67
-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/allocrtsig.c56
12 files changed, 0 insertions, 684 deletions
diff --git a/libpthread/nptl/ANNOUNCE b/libpthread/nptl/ANNOUNCE
deleted file mode 100644
index b63c657b8..000000000
--- a/libpthread/nptl/ANNOUNCE
+++ /dev/null
@@ -1,92 +0,0 @@
-Now that the Linux kernel is once again able to run all the tests we
-have and since glibc 2.3 was released it was time for a new code drop.
-I've uploaded the second code drop for the Native POSIX Thread
-Library:
-
- ftp://people.redhat.com/drepper/nptl/nptl-0.2.tar.bz2
-
-You need
-
-- the latest of Linus' kernel from BitKeeper (or 2.5.41 when it
- is released);
-
-- glibc 2.3
-
-- the very latest in tools such as
-
- + gcc either from the current development branch or the gcc 3.2
- from Red Hat Linux 8;
-
- + binutils preferrably from CVS, from H.J. Lu's latest release for
- Linux, or from RHL 8.
-
-
-Compiling glibc should proceed smoothly. But there are a number of
-tests which fail, mostly because some functionality is missing in
-glibc. Ignore those errors. It is only important that all tests in
-nptl/ are passing. Run
-
- make subdirs=nptl check
-
-to run all thread tests.
-
-
-This version features several improvements:
-
-- all APIs are now implemented;
-
-- fork handling has been improved; stacks in the child are freed;
- atfork handlers are removed if they were registered from a module
- which gets unloaded.
-
-- pthread_tryjoin_np and pthread_timedjoin_np are implemented
-
-- TSD handling corrected and optimized.
-
-- many more tests which also test the underlying kernel implementation.
-
-- the build infrastructure has been implemented so that the DSO and
- archives are built in usable form and with correct named.
-
-- libthread_db has been implemented. This is the library which is
- needed by all program which need to get access to internals of
- libpthread (mainly debuggers).
-
-- the CPU clock functions are implemented
-
-
-
-The white paper hasn't yet been updated. It's still available at
-
- http://people.redhat.com/drepper/nptl-design.pdf
-
-
-This release should be ready for some serious testing. I know it is
-hard to compile which I why I'm looking into providing binary RPMs.
-They can be used on non-critical systems. I'll only be able to
-provide binaries for RHL8 based systems, though, and the kernel still
-must be installed separately.
-
-
-The next steps will include:
-
-- write more tests and fix the bugs which are discovered this way
-
-- update the white paper
-
-- write and run more performance tests
-
-- port to IA-64
-
-
-Interested parties are once again invited to join the mailing we
-created:
-
-
- phil-list@redhat.com
-
-Go to
-
- https://listman.redhat.com/mailman/listinfo/phil-list
-
-to subscribe, unsubscribe, or review the archive.
diff --git a/libpthread/nptl/DESIGN-barrier.txt b/libpthread/nptl/DESIGN-barrier.txt
deleted file mode 100644
index 23463c6b7..000000000
--- a/libpthread/nptl/DESIGN-barrier.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-Barriers pseudocode
-===================
-
- int pthread_barrier_wait(barrier_t *barrier);
-
-struct barrier_t {
-
- unsigned int lock:
- - internal mutex
-
- unsigned int left;
- - current barrier count, # of threads still needed.
-
- unsigned int init_count;
- - number of threads needed for the barrier to continue.
-
- unsigned int curr_event;
- - generation count
-}
-
-pthread_barrier_wait(barrier_t *barrier)
-{
- unsigned int event;
- result = 0;
-
- lll_lock(barrier->lock);
- if (!--barrier->left) {
- barrier->curr_event++;
- futex_wake(&barrier->curr_event, INT_MAX)
-
- result = BARRIER_SERIAL_THREAD;
- } else {
- event = barrier->curr_event;
- lll_unlock(barrier->lock);
- do {
- futex_wait(&barrier->curr_event, event)
- } while (event == barrier->curr_event);
- }
-
- if (atomic_increment_val (barrier->left) == barrier->init_count)
- lll_unlock(barrier->lock);
-
- return result;
-}
diff --git a/libpthread/nptl/DESIGN-condvar.txt b/libpthread/nptl/DESIGN-condvar.txt
deleted file mode 100644
index 4845251c7..000000000
--- a/libpthread/nptl/DESIGN-condvar.txt
+++ /dev/null
@@ -1,134 +0,0 @@
-Conditional Variable pseudocode.
-================================
-
- int pthread_cond_timedwait (pthread_cond_t *cv, pthread_mutex_t *mutex);
- int pthread_cond_signal (pthread_cond_t *cv);
- int pthread_cond_broadcast (pthread_cond_t *cv);
-
-struct pthread_cond_t {
-
- unsigned int cond_lock;
-
- internal mutex
-
- uint64_t total_seq;
-
- Total number of threads using the conditional variable.
-
- uint64_t wakeup_seq;
-
- sequence number for next wakeup.
-
- uint64_t woken_seq;
-
- sequence number of last woken thread.
-
- uint32_t broadcast_seq;
-
-}
-
-
-struct cv_data {
-
- pthread_cond_t *cv;
-
- uint32_t bc_seq
-
-}
-
-
-
-cleanup_handler(cv_data)
-{
- cv = cv_data->cv;
- lll_lock(cv->lock);
-
- if (cv_data->bc_seq == cv->broadcast_seq) {
- ++cv->wakeup_seq;
- ++cv->woken_seq;
- }
-
- /* make sure no signal gets lost. */
- FUTEX_WAKE(cv->wakeup_seq, ALL);
-
- lll_unlock(cv->lock);
-}
-
-
-cond_timedwait(cv, mutex, timeout):
-{
- lll_lock(cv->lock);
- mutex_unlock(mutex);
-
- cleanup_push
-
- ++cv->total_seq;
- val = seq = cv->wakeup_seq;
- cv_data.bc = cv->broadcast_seq;
- cv_data.cv = cv;
-
- while (1) {
-
- lll_unlock(cv->lock);
-
- enable_async(&cv_data);
-
- ret = FUTEX_WAIT(cv->wakeup_seq, val, timeout);
-
- restore_async
-
- lll_lock(cv->lock);
-
- if (bc != cv->broadcast_seq)
- goto bc_out;
-
- val = cv->wakeup_seq;
-
- if (val != seq && cv->woken_seq != val) {
- ret = 0;
- break;
- }
-
- if (ret == TIMEDOUT) {
- ++cv->wakeup_seq;
- break;
- }
- }
-
- ++cv->woken_seq;
-
- bc_out:
- lll_unlock(cv->lock);
-
- cleanup_pop
-
- mutex_lock(mutex);
-
- return ret;
-}
-
-cond_signal(cv)
-{
- lll_lock(cv->lock);
-
- if (cv->total_seq > cv->wakeup_seq) {
- ++cv->wakeup_seq;
- FUTEX_WAKE(cv->wakeup_seq, 1);
- }
-
- lll_unlock(cv->lock);
-}
-
-cond_broadcast(cv)
-{
- lll_lock(cv->lock);
-
- if (cv->total_seq > cv->wakeup_seq) {
- cv->wakeup_seq = cv->total_seq;
- cv->woken_seq = cv->total_seq;
- ++cv->broadcast_seq;
- FUTEX_WAKE(cv->wakeup_seq, ALL);
- }
-
- lll_unlock(cv->lock);
-}
diff --git a/libpthread/nptl/DESIGN-rwlock.txt b/libpthread/nptl/DESIGN-rwlock.txt
deleted file mode 100644
index 810d1b8f3..000000000
--- a/libpthread/nptl/DESIGN-rwlock.txt
+++ /dev/null
@@ -1,113 +0,0 @@
-Reader Writer Locks pseudocode
-==============================
-
- pthread_rwlock_rdlock(pthread_rwlock_t *rwlock);
- pthread_rwlock_unlock(pthread_rwlock_t *rwlock);
- pthread_rwlock_wrlock(pthread_rwlock_t *rwlock);
-
-struct pthread_rwlock_t {
-
- unsigned int lock:
- - internal mutex
-
- unsigned int writers_preferred;
- - locking mode: 0 recursive, readers preferred
- 1 nonrecursive, writers preferred
-
- unsigned int readers;
- - number of read-only references various threads have
-
- pthread_t writer;
- - descriptor of the writer or 0
-
- unsigned int readers_wakeup;
- - 'all readers should wake up' futex.
-
- unsigned int writer_wakeup;
- - 'one writer should wake up' futex.
-
- unsigned int nr_readers_queued;
- - number of readers queued up.
-
- unsigned int nr_writers_queued;
- - number of writers queued up.
-}
-
-pthread_rwlock_rdlock(pthread_rwlock_t *rwlock)
-{
- lll_lock(rwlock->lock);
- for (;;) {
- if (!rwlock->writer && (!rwlock->nr_writers_queued ||
- !rwlock->writers_preferred))
- break;
-
- rwlock->nr_readers_queued++;
- val = rwlock->readers_wakeup;
- lll_unlock(rwlock->lock);
-
- futex_wait(&rwlock->readers_wakeup, val)
-
- lll_lock(rwlock->lock);
- rwlock->nr_readers_queued--;
- }
- rwlock->readers++;
- lll_unlock(rwlock->lock);
-}
-
-pthread_rwlock_tryrdlock(pthread_rwlock_t *rwlock)
-{
- int result = EBUSY;
- lll_lock(rwlock->lock);
- if (!rwlock->writer && (!rwlock->nr_writers_queued ||
- !rwlock->writers_preferred))
- rwlock->readers++;
- lll_unlock(rwlock->lock);
- return result;
-}
-
-pthread_rwlock_wrlock(pthread_rwlock_t *rwlock)
-{
- lll_lock(rwlock->lock);
- for (;;) {
- if (!rwlock->writer && !rwlock->readers)
- break;
-
- rwlock->nr_writers_queued++;
- val = rwlock->writer_wakeup;
- lll_unlock(rwlock->lock);
-
- futex_wait(&rwlock->writer_wakeup, val);
-
- lll_lock(rwlock->lock);
- rwlock->nr_writers_queued--;
- }
- rwlock->writer = pthread_self();
- lll_unlock(rwlock->lock);
-}
-
-pthread_rwlock_unlock(pthread_rwlock_t *rwlock)
-{
- lll_lock(rwlock->lock);
-
- if (rwlock->writer)
- rwlock->writer = 0;
- else
- rwlock->readers--;
-
- if (!rwlock->readers) {
- if (rwlock->nr_writers_queued) {
- ++rwlock->writer_wakeup;
- lll_unlock(rwlock->lock);
- futex_wake(&rwlock->writer_wakeup, 1);
- return;
- } else
- if (rwlock->nr_readers_queued) {
- ++rwlock->readers_wakeup;
- lll_unlock(rwlock->lock);
- futex_wake(&rwlock->readers_wakeup, MAX_INT);
- return;
- }
- }
-
- lll_unlock(rwlock->lock);
-}
diff --git a/libpthread/nptl/DESIGN-sem.txt b/libpthread/nptl/DESIGN-sem.txt
deleted file mode 100644
index 17eb0c11c..000000000
--- a/libpthread/nptl/DESIGN-sem.txt
+++ /dev/null
@@ -1,46 +0,0 @@
-Semaphores pseudocode
-==============================
-
- int sem_wait(sem_t * sem);
- int sem_trywait(sem_t * sem);
- int sem_post(sem_t * sem);
- int sem_getvalue(sem_t * sem, int * sval);
-
-struct sem_t {
-
- unsigned int count;
- - current semaphore count, also used as a futex
-}
-
-sem_wait(sem_t *sem)
-{
- for (;;) {
-
- if (atomic_decrement_if_positive(sem->count))
- break;
-
- futex_wait(&sem->count, 0)
- }
-}
-
-sem_post(sem_t *sem)
-{
- n = atomic_increment(sem->count);
- // Pass the new value of sem->count
- futex_wake(&sem->count, n + 1);
-}
-
-sem_trywait(sem_t *sem)
-{
- if (atomic_decrement_if_positive(sem->count)) {
- return 0;
- } else {
- return EAGAIN;
- }
-}
-
-sem_getvalue(sem_t *sem, int *sval)
-{
- *sval = sem->count;
- read_barrier();
-}
diff --git a/libpthread/nptl/TODO b/libpthread/nptl/TODO
deleted file mode 100644
index a4a1055f4..000000000
--- a/libpthread/nptl/TODO
+++ /dev/null
@@ -1,12 +0,0 @@
-- we should probably extend pthread_mutexattr_t with a field to create a
- single linked list of all instances. This requires changing the
- pthread_mutexattr_* functions.
-
-
-- a new attribute for mutexes: number of times we spin before calling
-sys_futex
-
-
-
-- test with threaded process terminating and semadj (?) being applied
- only after all threads are gone
diff --git a/libpthread/nptl/TODO-kernel b/libpthread/nptl/TODO-kernel
deleted file mode 100644
index ad6d2a4b5..000000000
--- a/libpthread/nptl/TODO-kernel
+++ /dev/null
@@ -1,20 +0,0 @@
-- setuid/setgid must effect process
- + test syscalls (getuid) afterwards
- + test core file content
-
- + use UID/GID in access(2), chmod(2), chown(2), link(2)
-
-- nice level is process property
-
-- rlimit should be process-wide and SIGXCPU should be sent if all threads
- together exceed the limit
-
-- getrusage() must return resource utilization for the process
-
-
-
-The following are possible optimizations and in no way required:
-
-
-- the scheduler should be thread group-aware, i.e., it has to give time to
- the thread group not proportional to the number of threads.
diff --git a/libpthread/nptl/TODO-testing b/libpthread/nptl/TODO-testing
deleted file mode 100644
index e076e5624..000000000
--- a/libpthread/nptl/TODO-testing
+++ /dev/null
@@ -1,20 +0,0 @@
-pthread_attr_setguardsize
-
- test effectiveness
-
-pthread_attr_[sg]etschedparam
-
- what to test?
-
-pthread_attr_[sg]etstack
-
- some more tests needed
-
-pthread_getcpuclockid
-
- check that value is reset -> rt subdir
-
-pthread_getschedparam
-pthread_setschedparam
-
- what to test?
diff --git a/libpthread/nptl/pt-allocrtsig.c b/libpthread/nptl/pt-allocrtsig.c
deleted file mode 100644
index e33775d5a..000000000
--- a/libpthread/nptl/pt-allocrtsig.c
+++ /dev/null
@@ -1,51 +0,0 @@
-/* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- 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., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <signal.h>
-
-
-/* These are defined in libc. We want to have only one definition
- so we "forward" the calls. */
-extern int __libc_current_sigrtmin (void);
-extern int __libc_current_sigrtmax (void);
-extern int __libc_allocate_rtsig (int high);
-
-
-/* We reserve __SIGRTMIN for use as the cancellation signal and
- __SIGRTMIN+1 to handle setuid et.al. These signals are used
- internally. */
-int
-__libc_current_sigrtmin (void)
-{
- return __libc_current_sigrtmin ();
-}
-
-
-int
-__libc_current_sigrtmax (void)
-{
- return __libc_current_sigrtmax ();
-}
-
-
-int
-__libc_allocate_rtsig (int high)
-{
- return __libc_allocate_rtsig (high);
-}
diff --git a/libpthread/nptl/sysdeps/pthread/pt-longjmp.c b/libpthread/nptl/sysdeps/pthread/pt-longjmp.c
deleted file mode 100644
index f161380ea..000000000
--- a/libpthread/nptl/sysdeps/pthread/pt-longjmp.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/* Copyright (C) 2002, 2003 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- 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., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <setjmp.h>
-#include <stdlib.h>
-#include "pthreadP.h"
-
-void
-longjmp (jmp_buf env, int val)
-{
- __libc_longjmp (env, val);
-}
-weak_alias (longjmp, siglongjmp)
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/aio_misc.h b/libpthread/nptl/sysdeps/unix/sysv/linux/aio_misc.h
deleted file mode 100644
index 7b0bac75f..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/aio_misc.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/* Copyright (C) 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
-
- 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; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
-#ifndef _AIO_MISC_H
-# include_next <aio_misc.h>
-# include <signal.h>
-# include <sysdep.h>
-# include <pthread.h>
-
-# define aio_start_notify_thread __aio_start_notify_thread
-# define aio_create_helper_thread __aio_create_helper_thread
-
-extern inline void
-__aio_start_notify_thread (void)
-{
- sigset_t ss;
- sigemptyset (&ss);
- INTERNAL_SYSCALL_DECL (err);
- INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8);
-}
-
-extern inline int
-__aio_create_helper_thread (pthread_t *threadp, void *(*tf) (void *), void *arg)
-{
- pthread_attr_t attr;
-
- /* Make sure the thread is created detached. */
- pthread_attr_init (&attr);
- pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
-
- /* The helper thread needs only very little resources. */
- (void) pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN);
-
- /* Block all signals in the helper thread. To do this thoroughly we
- temporarily have to block all signals here. */
- sigset_t ss;
- sigset_t oss;
- sigfillset (&ss);
- INTERNAL_SYSCALL_DECL (err);
- INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8);
-
- int ret = pthread_create (threadp, &attr, tf, arg);
-
- /* Restore the signal mask. */
- INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL,
- _NSIG / 8);
-
- (void) pthread_attr_destroy (&attr);
- return ret;
-}
-#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/allocrtsig.c b/libpthread/nptl/sysdeps/unix/sysv/linux/allocrtsig.c
deleted file mode 100644
index b37d54d65..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/allocrtsig.c
+++ /dev/null
@@ -1,56 +0,0 @@
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- 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., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <signal.h>
-
-
-static int current_rtmin = __SIGRTMIN + 2;
-static int current_rtmax = __SIGRTMAX;
-
-
-/* We reserve __SIGRTMIN for use as the cancelation signal. This
- signal is used internally. */
-int
-__libc_current_sigrtmin (void)
-{
- return current_rtmin;
-}
-libc_hidden_def (__libc_current_sigrtmin)
-strong_alias (__libc_current_sigrtmin, __libc_current_sigrtmin_private)
-
-
-int
-__libc_current_sigrtmax (void)
-{
- return current_rtmax;
-}
-libc_hidden_def (__libc_current_sigrtmax)
-strong_alias (__libc_current_sigrtmax, __libc_current_sigrtmax_private)
-
-
-int
-__libc_allocate_rtsig (int high)
-{
- if (current_rtmin == -1 || current_rtmin > current_rtmax)
- /* We don't have anymore signal available. */
- return -1;
-
- return high ? current_rtmin++ : current_rtmax--;
-}
-strong_alias (__libc_allocate_rtsig, __libc_allocate_rtsig_private)
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-09 15:59:05 +0000