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* maint: run 'make update-copyright'Simon Josefsson2023-01-011-1/+1
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* license: fix GPLv3 texts to use a comma instead of semicolon.Bernhard Voelker2022-01-051-1/+1
| | | | | | | | | See: https://www.gnu.org/licenses/gpl-3.0.html#howto Run: $ git grep -l 'Foundation; either version 3' \ | xargs sed -i '/Foundation; either version 3/ s/n; e/n, e/' * All files using GPLv3: Adjust via the above command.
* maint: run 'make update-copyright'Paul Eggert2022-01-011-1/+1
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* maint: run 'make update-copyright'Paul Eggert2020-12-311-1/+1
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* maint: Run 'make update-copyright'Paul Eggert2019-12-311-1/+1
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* lock tests: Skip test when no multithreading is enabled.Bruno Haible2019-12-151-0/+17
| | | | * tests/test-rwlock1.c: Skip the test when no multithreading is enabled.
* Update some URLsPaul Eggert2019-09-221-1/+1
| | | | | | This is a clerical change that mostly changes http: to https: in URLs where either will work. It also updates some URLs that have moved, removes some URLs that no longer work, and fixes related text.
* thread, lock, cond, tls: Remove support for Pth threads.Bruno Haible2019-07-061-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | * m4/threadlib.m4 (gl_THREADLIB_EARLY_BODY): Don't document --enable-threads=pth any more. (gl_THREADLIB_BODY): Don't set USE_PTH_THREADS any more. * m4/pthread_sigmask.m4 (gl_FUNC_PTHREAD_SIGMASK): Update comment. * m4/threads.m4 (gl_THREADS_H): Remove test for conflict between Pth threads and ISO C11 threads. * lib/glthread/thread.h: Remove code for USE_PTH_THREADS. * lib/glthread/lock.h: Likewise. * lib/glthread/lock.c: Likewise. * lib/glthread/cond.h: Likewise. * lib/glthread/cond.c: Likewise. * lib/glthread/tls.h: Likewise. * lib/glthread/tls.c: Likewise. * lib/glthread/yield.h: Likewise. * lib/regex_internal.h: Likewise. * tests/test-thread_create.c: Likewise. * tests/test-lock.c: Likewise. * tests/test-cond.c: Likewise. * tests/test-tls.c: Likewise. * tests/test-rwlock1.c: Don't include glthread/yield.h. (main): Sleep without calling gl_thread_yield.
* maint: Run 'make update-copyright'Paul Eggert2019-01-011-1/+1
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* maint: Run 'make update-copyright'Paul Eggert2018-01-011-1/+1
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* all: prefer https: URLsPaul Eggert2017-09-131-1/+1
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* lock: Provide guarantee to avoid writer starvation for rwlocks.Bruno Haible2017-01-051-0/+157
The rationale is: 1) Read-preferring read-write locks are prone to writer starvation if the number of reader threads multiplied by the percentage of time they have the lock held is too high. 2) Write- preferring read-write locks are the only reliable way to avoid this. 3) There have been reports of 'test-lock' hanging on glibc systems http://lists.gnu.org/archive/html/bug-gnulib/2017-01/msg00009.html, and glibc indeed implements read-preferring rwlocks by default, see http://man7.org/linux/man-pages/man3/pthread_rwlockattr_setkind_np.3.html and https://sourceware.org/bugzilla/show_bug.cgi?id=13701 . * m4/pthread_rwlock_rdlock.m4: New file. * m4/lock.m4 (gl_LOCK): Invoke gl_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER. * lib/glthread/lock.h [USE_POSIX_THREADS]: Test HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER. Use a different implementation of rwlock initialization on glibc systems without HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER. Use a different implementation of rwlocks altogether on non-glibc systems without HAVE_PTHREAD_RWLOCK_RDLOCK_PREFER_WRITER. [USE_PTH_THREADS]: Use a different implementation of rwlocks altogether. * lib/glthread/lock.c [USE_POSIX_THREADS] (glthread_rwlock_init_for_glibc): New function. [USE_POSIX_THREADS] (glthread_rwlock_rdlock_multithreaded): Update comment. [USE_PTH_THREADS]: New implementation of rwlocks. [USE_WINDOWS_THREADS] (glthread_rwlock_rdlock_func): Prefer writers over readers. * modules/lock (Files): Add m4/pthread_rwlock_rdlock.m4. (Depends-on): Add 'extensions'. * tests/test-rwlock1.c: New file. * lock-tests (Files): Add it. (Depends-on): Add usleep. (Makefile.am): Add test-rwlock1 to the tests.
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