mirror of
https://github.com/HDFGroup/hdf5.git
synced 2026-09-25 04:09:44 +03:00
Quincey Koziol
9fd88560d5
Complete overhaul of the concurrency-related aspects of the library (threading, atomics, locking, etc.), adding private routines in the H5TS package to allow internal algorithms to use all of these capabilities. Adds many new features & components in the H5TS package that are equivalent to common concurrency data structures and capabilities: "regular" and recursive mutices, condition variables, semaphores, thread barriers, 'once' support, thread pools, atomic variables, thread-local keys, and spawning & joining internal threads. Now supports C11, pthreads, and Windows threading for all H5TS capabilities, except the recursive readers/writers lock, which is not supported on Windows (because Windows threads don't provide a callback on thread-local variable deletion). The "global" API lock is switched to use a recursive mutex from the H5TS package, instead of its own variant. API context code (H5CX package) and error stacks (H5E package) now use the common thread-local info, instead of their own variants. Subfiling code is switched from using Mercury threading features to the new internal H5TS features. Removes the mercury threading code. Adds a configure option (--enable-threads / HDF5_ENABLE_THREADS), enabled by default, to control whether threading is enabled within the library.
131 lines
2.5 KiB
C
131 lines
2.5 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by The HDF Group. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the COPYING file, which can be found at the root of the source code *
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* distribution tree, or in https://www.hdfgroup.org/licenses. *
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* If you do not have access to either file, you may request a copy from *
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* help@hdfgroup.org. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/* A simple test program to see if a function "works" */
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#define SIMPLE_TEST(x) int main(void){ x; return 0; }
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#ifdef HAVE___FLOAT128
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/* Check if __float128 works (only used in the Fortran interface) */
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int
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main ()
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{
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__float128 x;
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return 0;
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}
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#endif /* HAVE___FLOAT128 */
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#ifdef HAVE_BUILTIN_EXPECT
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int
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main ()
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{
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void *ptr = (void*) 0;
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if (__builtin_expect (ptr != (void*) 0, 1))
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return 0;
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return 0;
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}
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#endif /* HAVE_BUILTIN_EXPECT */
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#ifdef HAVE_ATTRIBUTE
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int
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main ()
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{
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int __attribute__((unused)) x;
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return 0;
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}
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#endif /* HAVE_ATTRIBUTE */
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#ifdef HAVE_TIMEZONE
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#ifdef HAVE_SYS_TIME_H
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# include <sys/time.h>
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#endif
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#include <time.h>
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SIMPLE_TEST(timezone = 0);
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#endif /* HAVE_TIMEZONE */
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#ifdef PTHREAD_BARRIER
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#include <pthread.h>
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int main(void)
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{
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pthread_barrier_t barr;
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int ret;
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ret = pthread_barrier_init(&barr, NULL, 1);
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if (ret == 0)
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return 0;
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return 1;
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}
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#endif /* PTHREAD_BARRIER */
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#ifdef HAVE_SOCKLEN_T
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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# include <sys/socket.h>
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#endif
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SIMPLE_TEST(socklen_t foo);
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#endif /* HAVE_SOCKLEN_T */
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#ifdef DEV_T_IS_SCALAR
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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int main ()
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{
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dev_t d1, d2;
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if (d1 == d2)
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return 0;
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return 1;
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}
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#endif /* DEV_T_IS_SCALAR */
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#ifdef HAVE_DEFAULT_SOURCE
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/* Check default source */
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#include <features.h>
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int
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main(void)
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{
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#ifdef __GLIBC_PREREQ
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return __GLIBC_PREREQ(2,19);
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#else
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return 0;
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#endif
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}
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#endif
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