diff options
Diffstat (limited to 'contrib/apr/locks')
| -rw-r--r-- | contrib/apr/locks/unix/global_mutex.c | 188 | ||||
| -rw-r--r-- | contrib/apr/locks/unix/proc_mutex.c | 982 | ||||
| -rw-r--r-- | contrib/apr/locks/unix/thread_cond.c | 135 | ||||
| -rw-r--r-- | contrib/apr/locks/unix/thread_mutex.c | 138 | ||||
| -rw-r--r-- | contrib/apr/locks/unix/thread_rwlock.c | 181 |
5 files changed, 1624 insertions, 0 deletions
diff --git a/contrib/apr/locks/unix/global_mutex.c b/contrib/apr/locks/unix/global_mutex.c new file mode 100644 index 000000000000..18de7e450d30 --- /dev/null +++ b/contrib/apr/locks/unix/global_mutex.c @@ -0,0 +1,188 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr.h" +#include "apr_strings.h" +#include "apr_arch_global_mutex.h" +#include "apr_proc_mutex.h" +#include "apr_thread_mutex.h" +#include "apr_portable.h" + +static apr_status_t global_mutex_cleanup(void *data) +{ + apr_global_mutex_t *m = (apr_global_mutex_t *)data; + apr_status_t rv; + + rv = apr_proc_mutex_destroy(m->proc_mutex); + +#if APR_HAS_THREADS + if (m->thread_mutex) { + if (rv != APR_SUCCESS) { + (void)apr_thread_mutex_destroy(m->thread_mutex); + } + else { + rv = apr_thread_mutex_destroy(m->thread_mutex); + } + } +#endif /* APR_HAS_THREADS */ + + return rv; +} + +APR_DECLARE(apr_status_t) apr_global_mutex_create(apr_global_mutex_t **mutex, + const char *fname, + apr_lockmech_e mech, + apr_pool_t *pool) +{ + apr_status_t rv; + apr_global_mutex_t *m; + + m = (apr_global_mutex_t *)apr_palloc(pool, sizeof(*m)); + m->pool = pool; + + rv = apr_proc_mutex_create(&m->proc_mutex, fname, mech, m->pool); + if (rv != APR_SUCCESS) { + return rv; + } + +#if APR_HAS_THREADS + if (m->proc_mutex->inter_meth->flags & APR_PROCESS_LOCK_MECH_IS_GLOBAL) { + m->thread_mutex = NULL; /* We don't need a thread lock. */ + } + else { + rv = apr_thread_mutex_create(&m->thread_mutex, + APR_THREAD_MUTEX_DEFAULT, m->pool); + if (rv != APR_SUCCESS) { + rv = apr_proc_mutex_destroy(m->proc_mutex); + return rv; + } + } +#endif /* APR_HAS_THREADS */ + + apr_pool_cleanup_register(m->pool, (void *)m, + global_mutex_cleanup, apr_pool_cleanup_null); + *mutex = m; + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_global_mutex_child_init( + apr_global_mutex_t **mutex, + const char *fname, + apr_pool_t *pool) +{ + apr_status_t rv; + + rv = apr_proc_mutex_child_init(&((*mutex)->proc_mutex), fname, pool); + return rv; +} + +APR_DECLARE(apr_status_t) apr_global_mutex_lock(apr_global_mutex_t *mutex) +{ + apr_status_t rv; + +#if APR_HAS_THREADS + if (mutex->thread_mutex) { + rv = apr_thread_mutex_lock(mutex->thread_mutex); + if (rv != APR_SUCCESS) { + return rv; + } + } +#endif /* APR_HAS_THREADS */ + + rv = apr_proc_mutex_lock(mutex->proc_mutex); + +#if APR_HAS_THREADS + if (rv != APR_SUCCESS) { + if (mutex->thread_mutex) { + (void)apr_thread_mutex_unlock(mutex->thread_mutex); + } + } +#endif /* APR_HAS_THREADS */ + + return rv; +} + +APR_DECLARE(apr_status_t) apr_global_mutex_trylock(apr_global_mutex_t *mutex) +{ + apr_status_t rv; + +#if APR_HAS_THREADS + if (mutex->thread_mutex) { + rv = apr_thread_mutex_trylock(mutex->thread_mutex); + if (rv != APR_SUCCESS) { + return rv; + } + } +#endif /* APR_HAS_THREADS */ + + rv = apr_proc_mutex_trylock(mutex->proc_mutex); + +#if APR_HAS_THREADS + if (rv != APR_SUCCESS) { + if (mutex->thread_mutex) { + (void)apr_thread_mutex_unlock(mutex->thread_mutex); + } + } +#endif /* APR_HAS_THREADS */ + + return rv; +} + +APR_DECLARE(apr_status_t) apr_global_mutex_unlock(apr_global_mutex_t *mutex) +{ + apr_status_t rv; + + rv = apr_proc_mutex_unlock(mutex->proc_mutex); +#if APR_HAS_THREADS + if (mutex->thread_mutex) { + if (rv != APR_SUCCESS) { + (void)apr_thread_mutex_unlock(mutex->thread_mutex); + } + else { + rv = apr_thread_mutex_unlock(mutex->thread_mutex); + } + } +#endif /* APR_HAS_THREADS */ + return rv; +} + +APR_DECLARE(apr_status_t) apr_os_global_mutex_get(apr_os_global_mutex_t *ospmutex, + apr_global_mutex_t *pmutex) +{ + ospmutex->pool = pmutex->pool; + ospmutex->proc_mutex = pmutex->proc_mutex; +#if APR_HAS_THREADS + ospmutex->thread_mutex = pmutex->thread_mutex; +#endif + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_global_mutex_destroy(apr_global_mutex_t *mutex) +{ + return apr_pool_cleanup_run(mutex->pool, mutex, global_mutex_cleanup); +} + +APR_DECLARE(const char *) apr_global_mutex_lockfile(apr_global_mutex_t *mutex) +{ + return apr_proc_mutex_lockfile(mutex->proc_mutex); +} + +APR_DECLARE(const char *) apr_global_mutex_name(apr_global_mutex_t *mutex) +{ + return apr_proc_mutex_name(mutex->proc_mutex); +} + +APR_POOL_IMPLEMENT_ACCESSOR(global_mutex) diff --git a/contrib/apr/locks/unix/proc_mutex.c b/contrib/apr/locks/unix/proc_mutex.c new file mode 100644 index 000000000000..f9637e03fd9c --- /dev/null +++ b/contrib/apr/locks/unix/proc_mutex.c @@ -0,0 +1,982 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr.h" +#include "apr_strings.h" +#include "apr_arch_proc_mutex.h" +#include "apr_arch_file_io.h" /* for apr_mkstemp() */ +#include "apr_hash.h" + +APR_DECLARE(apr_status_t) apr_proc_mutex_destroy(apr_proc_mutex_t *mutex) +{ + return apr_pool_cleanup_run(mutex->pool, mutex, apr_proc_mutex_cleanup); +} + +#if APR_HAS_POSIXSEM_SERIALIZE || APR_HAS_FCNTL_SERIALIZE || \ + APR_HAS_PROC_PTHREAD_SERIALIZE || APR_HAS_SYSVSEM_SERIALIZE +static apr_status_t proc_mutex_no_child_init(apr_proc_mutex_t **mutex, + apr_pool_t *cont, + const char *fname) +{ + return APR_SUCCESS; +} +#endif + +#if APR_HAS_POSIXSEM_SERIALIZE + +#ifndef SEM_FAILED +#define SEM_FAILED (-1) +#endif + +static apr_status_t proc_mutex_posix_cleanup(void *mutex_) +{ + apr_proc_mutex_t *mutex = mutex_; + + if (sem_close(mutex->psem_interproc) < 0) { + return errno; + } + + return APR_SUCCESS; +} + +static unsigned int rshash (char *p) { + /* hash function from Robert Sedgwicks 'Algorithms in C' book */ + unsigned int b = 378551; + unsigned int a = 63689; + unsigned int retval = 0; + + for( ; *p; p++) + { + retval = retval * a + (*p); + a *= b; + } + + return retval; +} + +static apr_status_t proc_mutex_posix_create(apr_proc_mutex_t *new_mutex, + const char *fname) +{ + #define APR_POSIXSEM_NAME_MIN 13 + sem_t *psem; + char semname[32]; + + new_mutex->interproc = apr_palloc(new_mutex->pool, + sizeof(*new_mutex->interproc)); + /* + * This bogusness is to follow what appears to be the + * lowest common denominator in Posix semaphore naming: + * - start with '/' + * - be at most 14 chars + * - be unique and not match anything on the filesystem + * + * Because of this, we use fname to generate a (unique) hash + * and use that as the name of the semaphore. If no filename was + * given, we create one based on the time. We tuck the name + * away, since it might be useful for debugging. We use 2 hashing + * functions to try to avoid collisions. + * + * To make this as robust as possible, we initially try something + * larger (and hopefully more unique) and gracefully fail down to the + * LCD above. + * + * NOTE: Darwin (Mac OS X) seems to be the most restrictive + * implementation. Versions previous to Darwin 6.2 had the 14 + * char limit, but later rev's allow up to 31 characters. + * + */ + if (fname) { + apr_ssize_t flen = strlen(fname); + char *p = apr_pstrndup(new_mutex->pool, fname, strlen(fname)); + unsigned int h1, h2; + h1 = apr_hashfunc_default((const char *)p, &flen); + h2 = rshash(p); + apr_snprintf(semname, sizeof(semname), "/ApR.%xH%x", h1, h2); + } else { + apr_time_t now; + unsigned long sec; + unsigned long usec; + now = apr_time_now(); + sec = apr_time_sec(now); + usec = apr_time_usec(now); + apr_snprintf(semname, sizeof(semname), "/ApR.%lxZ%lx", sec, usec); + } + psem = sem_open(semname, O_CREAT | O_EXCL, 0644, 1); + if (psem == (sem_t *)SEM_FAILED) { + if (errno == ENAMETOOLONG) { + /* Oh well, good try */ + semname[APR_POSIXSEM_NAME_MIN] = '\0'; + } else { + return errno; + } + psem = sem_open(semname, O_CREAT | O_EXCL, 0644, 1); + } + + if (psem == (sem_t *)SEM_FAILED) { + return errno; + } + /* Ahhh. The joys of Posix sems. Predelete it... */ + sem_unlink(semname); + new_mutex->psem_interproc = psem; + new_mutex->fname = apr_pstrdup(new_mutex->pool, semname); + apr_pool_cleanup_register(new_mutex->pool, (void *)new_mutex, + apr_proc_mutex_cleanup, + apr_pool_cleanup_null); + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_posix_acquire(apr_proc_mutex_t *mutex) +{ + if (sem_wait(mutex->psem_interproc) < 0) { + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_posix_tryacquire(apr_proc_mutex_t *mutex) +{ + if (sem_trywait(mutex->psem_interproc) < 0) { + if (errno == EAGAIN) { + return APR_EBUSY; + } + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_posix_release(apr_proc_mutex_t *mutex) +{ + mutex->curr_locked = 0; + if (sem_post(mutex->psem_interproc) < 0) { + /* any failure is probably fatal, so no big deal to leave + * ->curr_locked at 0. */ + return errno; + } + return APR_SUCCESS; +} + +static const apr_proc_mutex_unix_lock_methods_t mutex_posixsem_methods = +{ +#if APR_PROCESS_LOCK_IS_GLOBAL || !APR_HAS_THREADS || defined(POSIXSEM_IS_GLOBAL) + APR_PROCESS_LOCK_MECH_IS_GLOBAL, +#else + 0, +#endif + proc_mutex_posix_create, + proc_mutex_posix_acquire, + proc_mutex_posix_tryacquire, + proc_mutex_posix_release, + proc_mutex_posix_cleanup, + proc_mutex_no_child_init, + "posixsem" +}; + +#endif /* Posix sem implementation */ + +#if APR_HAS_SYSVSEM_SERIALIZE + +static struct sembuf proc_mutex_op_on; +static struct sembuf proc_mutex_op_try; +static struct sembuf proc_mutex_op_off; + +static void proc_mutex_sysv_setup(void) +{ + proc_mutex_op_on.sem_num = 0; + proc_mutex_op_on.sem_op = -1; + proc_mutex_op_on.sem_flg = SEM_UNDO; + proc_mutex_op_try.sem_num = 0; + proc_mutex_op_try.sem_op = -1; + proc_mutex_op_try.sem_flg = SEM_UNDO | IPC_NOWAIT; + proc_mutex_op_off.sem_num = 0; + proc_mutex_op_off.sem_op = 1; + proc_mutex_op_off.sem_flg = SEM_UNDO; +} + +static apr_status_t proc_mutex_sysv_cleanup(void *mutex_) +{ + apr_proc_mutex_t *mutex=mutex_; + union semun ick; + + if (mutex->interproc->filedes != -1) { + ick.val = 0; + semctl(mutex->interproc->filedes, 0, IPC_RMID, ick); + } + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_sysv_create(apr_proc_mutex_t *new_mutex, + const char *fname) +{ + union semun ick; + apr_status_t rv; + + new_mutex->interproc = apr_palloc(new_mutex->pool, sizeof(*new_mutex->interproc)); + new_mutex->interproc->filedes = semget(IPC_PRIVATE, 1, IPC_CREAT | 0600); + + if (new_mutex->interproc->filedes < 0) { + rv = errno; + proc_mutex_sysv_cleanup(new_mutex); + return rv; + } + ick.val = 1; + if (semctl(new_mutex->interproc->filedes, 0, SETVAL, ick) < 0) { + rv = errno; + proc_mutex_sysv_cleanup(new_mutex); + return rv; + } + new_mutex->curr_locked = 0; + apr_pool_cleanup_register(new_mutex->pool, + (void *)new_mutex, apr_proc_mutex_cleanup, + apr_pool_cleanup_null); + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_sysv_acquire(apr_proc_mutex_t *mutex) +{ + int rc; + + do { + rc = semop(mutex->interproc->filedes, &proc_mutex_op_on, 1); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_sysv_tryacquire(apr_proc_mutex_t *mutex) +{ + int rc; + + do { + rc = semop(mutex->interproc->filedes, &proc_mutex_op_try, 1); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + if (errno == EAGAIN) { + return APR_EBUSY; + } + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_sysv_release(apr_proc_mutex_t *mutex) +{ + int rc; + + mutex->curr_locked = 0; + do { + rc = semop(mutex->interproc->filedes, &proc_mutex_op_off, 1); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + return errno; + } + return APR_SUCCESS; +} + +static const apr_proc_mutex_unix_lock_methods_t mutex_sysv_methods = +{ +#if APR_PROCESS_LOCK_IS_GLOBAL || !APR_HAS_THREADS || defined(SYSVSEM_IS_GLOBAL) + APR_PROCESS_LOCK_MECH_IS_GLOBAL, +#else + 0, +#endif + proc_mutex_sysv_create, + proc_mutex_sysv_acquire, + proc_mutex_sysv_tryacquire, + proc_mutex_sysv_release, + proc_mutex_sysv_cleanup, + proc_mutex_no_child_init, + "sysvsem" +}; + +#endif /* SysV sem implementation */ + +#if APR_HAS_PROC_PTHREAD_SERIALIZE + +static apr_status_t proc_mutex_proc_pthread_cleanup(void *mutex_) +{ + apr_proc_mutex_t *mutex=mutex_; + apr_status_t rv; + + if (mutex->curr_locked == 1) { + if ((rv = pthread_mutex_unlock(mutex->pthread_interproc))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + return rv; + } + } + /* curr_locked is set to -1 until the mutex has been created */ + if (mutex->curr_locked != -1) { + if ((rv = pthread_mutex_destroy(mutex->pthread_interproc))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + return rv; + } + } + if (munmap((caddr_t)mutex->pthread_interproc, sizeof(pthread_mutex_t))) { + return errno; + } + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_proc_pthread_create(apr_proc_mutex_t *new_mutex, + const char *fname) +{ + apr_status_t rv; + int fd; + pthread_mutexattr_t mattr; + + fd = open("/dev/zero", O_RDWR); + if (fd < 0) { + return errno; + } + + new_mutex->pthread_interproc = (pthread_mutex_t *)mmap( + (caddr_t) 0, + sizeof(pthread_mutex_t), + PROT_READ | PROT_WRITE, MAP_SHARED, + fd, 0); + if (new_mutex->pthread_interproc == (pthread_mutex_t *) (caddr_t) -1) { + close(fd); + return errno; + } + close(fd); + + new_mutex->curr_locked = -1; /* until the mutex has been created */ + + if ((rv = pthread_mutexattr_init(&mattr))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + proc_mutex_proc_pthread_cleanup(new_mutex); + return rv; + } + if ((rv = pthread_mutexattr_setpshared(&mattr, PTHREAD_PROCESS_SHARED))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + proc_mutex_proc_pthread_cleanup(new_mutex); + pthread_mutexattr_destroy(&mattr); + return rv; + } + +#ifdef HAVE_PTHREAD_MUTEX_ROBUST + if ((rv = pthread_mutexattr_setrobust_np(&mattr, + PTHREAD_MUTEX_ROBUST_NP))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + proc_mutex_proc_pthread_cleanup(new_mutex); + pthread_mutexattr_destroy(&mattr); + return rv; + } + if ((rv = pthread_mutexattr_setprotocol(&mattr, PTHREAD_PRIO_INHERIT))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + proc_mutex_proc_pthread_cleanup(new_mutex); + pthread_mutexattr_destroy(&mattr); + return rv; + } +#endif /* HAVE_PTHREAD_MUTEX_ROBUST */ + + if ((rv = pthread_mutex_init(new_mutex->pthread_interproc, &mattr))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + proc_mutex_proc_pthread_cleanup(new_mutex); + pthread_mutexattr_destroy(&mattr); + return rv; + } + + new_mutex->curr_locked = 0; /* mutex created now */ + + if ((rv = pthread_mutexattr_destroy(&mattr))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + proc_mutex_proc_pthread_cleanup(new_mutex); + return rv; + } + + apr_pool_cleanup_register(new_mutex->pool, + (void *)new_mutex, + apr_proc_mutex_cleanup, + apr_pool_cleanup_null); + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_proc_pthread_acquire(apr_proc_mutex_t *mutex) +{ + apr_status_t rv; + + if ((rv = pthread_mutex_lock(mutex->pthread_interproc))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif +#ifdef HAVE_PTHREAD_MUTEX_ROBUST + /* Okay, our owner died. Let's try to make it consistent again. */ + if (rv == EOWNERDEAD) { + pthread_mutex_consistent_np(mutex->pthread_interproc); + } + else + return rv; +#else + return rv; +#endif + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_proc_pthread_tryacquire(apr_proc_mutex_t *mutex) +{ + apr_status_t rv; + + if ((rv = pthread_mutex_trylock(mutex->pthread_interproc))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + if (rv == EBUSY) { + return APR_EBUSY; + } +#ifdef HAVE_PTHREAD_MUTEX_ROBUST + /* Okay, our owner died. Let's try to make it consistent again. */ + if (rv == EOWNERDEAD) { + pthread_mutex_consistent_np(mutex->pthread_interproc); + rv = APR_SUCCESS; + } + else + return rv; +#else + return rv; +#endif + } + mutex->curr_locked = 1; + return rv; +} + +static apr_status_t proc_mutex_proc_pthread_release(apr_proc_mutex_t *mutex) +{ + apr_status_t rv; + + mutex->curr_locked = 0; + if ((rv = pthread_mutex_unlock(mutex->pthread_interproc))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + return rv; + } + return APR_SUCCESS; +} + +static const apr_proc_mutex_unix_lock_methods_t mutex_proc_pthread_methods = +{ + APR_PROCESS_LOCK_MECH_IS_GLOBAL, + proc_mutex_proc_pthread_create, + proc_mutex_proc_pthread_acquire, + proc_mutex_proc_pthread_tryacquire, + proc_mutex_proc_pthread_release, + proc_mutex_proc_pthread_cleanup, + proc_mutex_no_child_init, + "pthread" +}; + +#endif + +#if APR_HAS_FCNTL_SERIALIZE + +static struct flock proc_mutex_lock_it; +static struct flock proc_mutex_unlock_it; + +static apr_status_t proc_mutex_fcntl_release(apr_proc_mutex_t *); + +static void proc_mutex_fcntl_setup(void) +{ + proc_mutex_lock_it.l_whence = SEEK_SET; /* from current point */ + proc_mutex_lock_it.l_start = 0; /* -"- */ + proc_mutex_lock_it.l_len = 0; /* until end of file */ + proc_mutex_lock_it.l_type = F_WRLCK; /* set exclusive/write lock */ + proc_mutex_lock_it.l_pid = 0; /* pid not actually interesting */ + proc_mutex_unlock_it.l_whence = SEEK_SET; /* from current point */ + proc_mutex_unlock_it.l_start = 0; /* -"- */ + proc_mutex_unlock_it.l_len = 0; /* until end of file */ + proc_mutex_unlock_it.l_type = F_UNLCK; /* set exclusive/write lock */ + proc_mutex_unlock_it.l_pid = 0; /* pid not actually interesting */ +} + +static apr_status_t proc_mutex_fcntl_cleanup(void *mutex_) +{ + apr_status_t status; + apr_proc_mutex_t *mutex=mutex_; + + if (mutex->curr_locked == 1) { + status = proc_mutex_fcntl_release(mutex); + if (status != APR_SUCCESS) + return status; + } + + return apr_file_close(mutex->interproc); +} + +static apr_status_t proc_mutex_fcntl_create(apr_proc_mutex_t *new_mutex, + const char *fname) +{ + int rv; + + if (fname) { + new_mutex->fname = apr_pstrdup(new_mutex->pool, fname); + rv = apr_file_open(&new_mutex->interproc, new_mutex->fname, + APR_FOPEN_CREATE | APR_FOPEN_WRITE | APR_FOPEN_EXCL, + APR_UREAD | APR_UWRITE | APR_GREAD | APR_WREAD, + new_mutex->pool); + } + else { + new_mutex->fname = apr_pstrdup(new_mutex->pool, "/tmp/aprXXXXXX"); + rv = apr_file_mktemp(&new_mutex->interproc, new_mutex->fname, + APR_FOPEN_CREATE | APR_FOPEN_WRITE | APR_FOPEN_EXCL, + new_mutex->pool); + } + + if (rv != APR_SUCCESS) { + return rv; + } + + new_mutex->curr_locked = 0; + unlink(new_mutex->fname); + apr_pool_cleanup_register(new_mutex->pool, + (void*)new_mutex, + apr_proc_mutex_cleanup, + apr_pool_cleanup_null); + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_fcntl_acquire(apr_proc_mutex_t *mutex) +{ + int rc; + + do { + rc = fcntl(mutex->interproc->filedes, F_SETLKW, &proc_mutex_lock_it); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + return errno; + } + mutex->curr_locked=1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_fcntl_tryacquire(apr_proc_mutex_t *mutex) +{ + int rc; + + do { + rc = fcntl(mutex->interproc->filedes, F_SETLK, &proc_mutex_lock_it); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { +#if FCNTL_TRYACQUIRE_EACCES + if (errno == EACCES) { +#else + if (errno == EAGAIN) { +#endif + return APR_EBUSY; + } + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_fcntl_release(apr_proc_mutex_t *mutex) +{ + int rc; + + mutex->curr_locked=0; + do { + rc = fcntl(mutex->interproc->filedes, F_SETLKW, &proc_mutex_unlock_it); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + return errno; + } + return APR_SUCCESS; +} + +static const apr_proc_mutex_unix_lock_methods_t mutex_fcntl_methods = +{ +#if APR_PROCESS_LOCK_IS_GLOBAL || !APR_HAS_THREADS || defined(FCNTL_IS_GLOBAL) + APR_PROCESS_LOCK_MECH_IS_GLOBAL, +#else + 0, +#endif + proc_mutex_fcntl_create, + proc_mutex_fcntl_acquire, + proc_mutex_fcntl_tryacquire, + proc_mutex_fcntl_release, + proc_mutex_fcntl_cleanup, + proc_mutex_no_child_init, + "fcntl" +}; + +#endif /* fcntl implementation */ + +#if APR_HAS_FLOCK_SERIALIZE + +static apr_status_t proc_mutex_flock_release(apr_proc_mutex_t *); + +static apr_status_t proc_mutex_flock_cleanup(void *mutex_) +{ + apr_status_t status; + apr_proc_mutex_t *mutex=mutex_; + + if (mutex->curr_locked == 1) { + status = proc_mutex_flock_release(mutex); + if (status != APR_SUCCESS) + return status; + } + if (mutex->interproc) { /* if it was opened properly */ + apr_file_close(mutex->interproc); + } + unlink(mutex->fname); + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_flock_create(apr_proc_mutex_t *new_mutex, + const char *fname) +{ + int rv; + + if (fname) { + new_mutex->fname = apr_pstrdup(new_mutex->pool, fname); + rv = apr_file_open(&new_mutex->interproc, new_mutex->fname, + APR_FOPEN_CREATE | APR_FOPEN_WRITE | APR_FOPEN_EXCL, + APR_UREAD | APR_UWRITE, + new_mutex->pool); + } + else { + new_mutex->fname = apr_pstrdup(new_mutex->pool, "/tmp/aprXXXXXX"); + rv = apr_file_mktemp(&new_mutex->interproc, new_mutex->fname, + APR_FOPEN_CREATE | APR_FOPEN_WRITE | APR_FOPEN_EXCL, + new_mutex->pool); + } + + if (rv != APR_SUCCESS) { + proc_mutex_flock_cleanup(new_mutex); + return errno; + } + new_mutex->curr_locked = 0; + apr_pool_cleanup_register(new_mutex->pool, (void *)new_mutex, + apr_proc_mutex_cleanup, + apr_pool_cleanup_null); + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_flock_acquire(apr_proc_mutex_t *mutex) +{ + int rc; + + do { + rc = flock(mutex->interproc->filedes, LOCK_EX); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_flock_tryacquire(apr_proc_mutex_t *mutex) +{ + int rc; + + do { + rc = flock(mutex->interproc->filedes, LOCK_EX | LOCK_NB); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + if (errno == EWOULDBLOCK || errno == EAGAIN) { + return APR_EBUSY; + } + return errno; + } + mutex->curr_locked = 1; + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_flock_release(apr_proc_mutex_t *mutex) +{ + int rc; + + mutex->curr_locked = 0; + do { + rc = flock(mutex->interproc->filedes, LOCK_UN); + } while (rc < 0 && errno == EINTR); + if (rc < 0) { + return errno; + } + return APR_SUCCESS; +} + +static apr_status_t proc_mutex_flock_child_init(apr_proc_mutex_t **mutex, + apr_pool_t *pool, + const char *fname) +{ + apr_proc_mutex_t *new_mutex; + int rv; + + new_mutex = (apr_proc_mutex_t *)apr_palloc(pool, sizeof(apr_proc_mutex_t)); + + memcpy(new_mutex, *mutex, sizeof *new_mutex); + new_mutex->pool = pool; + if (!fname) { + fname = (*mutex)->fname; + } + new_mutex->fname = apr_pstrdup(pool, fname); + rv = apr_file_open(&new_mutex->interproc, new_mutex->fname, + APR_FOPEN_WRITE, 0, new_mutex->pool); + if (rv != APR_SUCCESS) { + return rv; + } + *mutex = new_mutex; + return APR_SUCCESS; +} + +static const apr_proc_mutex_unix_lock_methods_t mutex_flock_methods = +{ +#if APR_PROCESS_LOCK_IS_GLOBAL || !APR_HAS_THREADS || defined(FLOCK_IS_GLOBAL) + APR_PROCESS_LOCK_MECH_IS_GLOBAL, +#else + 0, +#endif + proc_mutex_flock_create, + proc_mutex_flock_acquire, + proc_mutex_flock_tryacquire, + proc_mutex_flock_release, + proc_mutex_flock_cleanup, + proc_mutex_flock_child_init, + "flock" +}; + +#endif /* flock implementation */ + +void apr_proc_mutex_unix_setup_lock(void) +{ + /* setup only needed for sysvsem and fnctl */ +#if APR_HAS_SYSVSEM_SERIALIZE + proc_mutex_sysv_setup(); +#endif +#if APR_HAS_FCNTL_SERIALIZE + proc_mutex_fcntl_setup(); +#endif +} + +static apr_status_t proc_mutex_choose_method(apr_proc_mutex_t *new_mutex, apr_lockmech_e mech) +{ + switch (mech) { + case APR_LOCK_FCNTL: +#if APR_HAS_FCNTL_SERIALIZE + new_mutex->inter_meth = &mutex_fcntl_methods; +#else + return APR_ENOTIMPL; +#endif + break; + case APR_LOCK_FLOCK: +#if APR_HAS_FLOCK_SERIALIZE + new_mutex->inter_meth = &mutex_flock_methods; +#else + return APR_ENOTIMPL; +#endif + break; + case APR_LOCK_SYSVSEM: +#if APR_HAS_SYSVSEM_SERIALIZE + new_mutex->inter_meth = &mutex_sysv_methods; +#else + return APR_ENOTIMPL; +#endif + break; + case APR_LOCK_POSIXSEM: +#if APR_HAS_POSIXSEM_SERIALIZE + new_mutex->inter_meth = &mutex_posixsem_methods; +#else + return APR_ENOTIMPL; +#endif + break; + case APR_LOCK_PROC_PTHREAD: +#if APR_HAS_PROC_PTHREAD_SERIALIZE + new_mutex->inter_meth = &mutex_proc_pthread_methods; +#else + return APR_ENOTIMPL; +#endif + break; + case APR_LOCK_DEFAULT: +#if APR_USE_FLOCK_SERIALIZE + new_mutex->inter_meth = &mutex_flock_methods; +#elif APR_USE_SYSVSEM_SERIALIZE + new_mutex->inter_meth = &mutex_sysv_methods; +#elif APR_USE_FCNTL_SERIALIZE + new_mutex->inter_meth = &mutex_fcntl_methods; +#elif APR_USE_PROC_PTHREAD_SERIALIZE + new_mutex->inter_meth = &mutex_proc_pthread_methods; +#elif APR_USE_POSIXSEM_SERIALIZE + new_mutex->inter_meth = &mutex_posixsem_methods; +#else + return APR_ENOTIMPL; +#endif + break; + default: + return APR_ENOTIMPL; + } + return APR_SUCCESS; +} + +APR_DECLARE(const char *) apr_proc_mutex_defname(void) +{ + apr_status_t rv; + apr_proc_mutex_t mutex; + + if ((rv = proc_mutex_choose_method(&mutex, APR_LOCK_DEFAULT)) != APR_SUCCESS) { + return "unknown"; + } + mutex.meth = mutex.inter_meth; + + return apr_proc_mutex_name(&mutex); +} + +static apr_status_t proc_mutex_create(apr_proc_mutex_t *new_mutex, apr_lockmech_e mech, const char *fname) +{ + apr_status_t rv; + + if ((rv = proc_mutex_choose_method(new_mutex, mech)) != APR_SUCCESS) { + return rv; + } + + new_mutex->meth = new_mutex->inter_meth; + + if ((rv = new_mutex->meth->create(new_mutex, fname)) != APR_SUCCESS) { + return rv; + } + + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_proc_mutex_create(apr_proc_mutex_t **mutex, + const char *fname, + apr_lockmech_e mech, + apr_pool_t *pool) +{ + apr_proc_mutex_t *new_mutex; + apr_status_t rv; + + new_mutex = apr_pcalloc(pool, sizeof(apr_proc_mutex_t)); + new_mutex->pool = pool; + + if ((rv = proc_mutex_create(new_mutex, mech, fname)) != APR_SUCCESS) + return rv; + + *mutex = new_mutex; + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_proc_mutex_child_init(apr_proc_mutex_t **mutex, + const char *fname, + apr_pool_t *pool) +{ + return (*mutex)->meth->child_init(mutex, pool, fname); +} + +APR_DECLARE(apr_status_t) apr_proc_mutex_lock(apr_proc_mutex_t *mutex) +{ + return mutex->meth->acquire(mutex); +} + +APR_DECLARE(apr_status_t) apr_proc_mutex_trylock(apr_proc_mutex_t *mutex) +{ + return mutex->meth->tryacquire(mutex); +} + +APR_DECLARE(apr_status_t) apr_proc_mutex_unlock(apr_proc_mutex_t *mutex) +{ + return mutex->meth->release(mutex); +} + +APR_DECLARE(apr_status_t) apr_proc_mutex_cleanup(void *mutex) +{ + return ((apr_proc_mutex_t *)mutex)->meth->cleanup(mutex); +} + +APR_DECLARE(const char *) apr_proc_mutex_name(apr_proc_mutex_t *mutex) +{ + return mutex->meth->name; +} + +APR_DECLARE(const char *) apr_proc_mutex_lockfile(apr_proc_mutex_t *mutex) +{ + /* POSIX sems use the fname field but don't use a file, + * so be careful. */ +#if APR_HAS_FLOCK_SERIALIZE + if (mutex->meth == &mutex_flock_methods) { + return mutex->fname; + } +#endif +#if APR_HAS_FCNTL_SERIALIZE + if (mutex->meth == &mutex_fcntl_methods) { + return mutex->fname; + } +#endif + return NULL; +} + +APR_POOL_IMPLEMENT_ACCESSOR(proc_mutex) + +/* Implement OS-specific accessors defined in apr_portable.h */ + +APR_DECLARE(apr_status_t) apr_os_proc_mutex_get(apr_os_proc_mutex_t *ospmutex, + apr_proc_mutex_t *pmutex) +{ +#if APR_HAS_SYSVSEM_SERIALIZE || APR_HAS_FCNTL_SERIALIZE || APR_HAS_FLOCK_SERIALIZE || APR_HAS_POSIXSEM_SERIALIZE + ospmutex->crossproc = pmutex->interproc->filedes; +#endif +#if APR_HAS_PROC_PTHREAD_SERIALIZE + ospmutex->pthread_interproc = pmutex->pthread_interproc; +#endif + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_os_proc_mutex_put(apr_proc_mutex_t **pmutex, + apr_os_proc_mutex_t *ospmutex, + apr_pool_t *pool) +{ + if (pool == NULL) { + return APR_ENOPOOL; + } + if ((*pmutex) == NULL) { + (*pmutex) = (apr_proc_mutex_t *)apr_pcalloc(pool, + sizeof(apr_proc_mutex_t)); + (*pmutex)->pool = pool; + } +#if APR_HAS_SYSVSEM_SERIALIZE || APR_HAS_FCNTL_SERIALIZE || APR_HAS_FLOCK_SERIALIZE || APR_HAS_POSIXSEM_SERIALIZE + apr_os_file_put(&(*pmutex)->interproc, &ospmutex->crossproc, 0, pool); +#endif +#if APR_HAS_PROC_PTHREAD_SERIALIZE + (*pmutex)->pthread_interproc = ospmutex->pthread_interproc; +#endif + return APR_SUCCESS; +} + diff --git a/contrib/apr/locks/unix/thread_cond.c b/contrib/apr/locks/unix/thread_cond.c new file mode 100644 index 000000000000..db7dd4f0d973 --- /dev/null +++ b/contrib/apr/locks/unix/thread_cond.c @@ -0,0 +1,135 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr.h" + +#if APR_HAS_THREADS + +#include "apr_arch_thread_mutex.h" +#include "apr_arch_thread_cond.h" + +static apr_status_t thread_cond_cleanup(void *data) +{ + apr_thread_cond_t *cond = (apr_thread_cond_t *)data; + apr_status_t rv; + + rv = pthread_cond_destroy(&cond->cond); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + return rv; +} + +APR_DECLARE(apr_status_t) apr_thread_cond_create(apr_thread_cond_t **cond, + apr_pool_t *pool) +{ + apr_thread_cond_t *new_cond; + apr_status_t rv; + + new_cond = apr_palloc(pool, sizeof(apr_thread_cond_t)); + + new_cond->pool = pool; + + if ((rv = pthread_cond_init(&new_cond->cond, NULL))) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + return rv; + } + + apr_pool_cleanup_register(new_cond->pool, + (void *)new_cond, thread_cond_cleanup, + apr_pool_cleanup_null); + + *cond = new_cond; + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_thread_cond_wait(apr_thread_cond_t *cond, + apr_thread_mutex_t *mutex) +{ + apr_status_t rv; + + rv = pthread_cond_wait(&cond->cond, &mutex->mutex); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + return rv; +} + +APR_DECLARE(apr_status_t) apr_thread_cond_timedwait(apr_thread_cond_t *cond, + apr_thread_mutex_t *mutex, + apr_interval_time_t timeout) +{ + apr_status_t rv; + apr_time_t then; + struct timespec abstime; + + then = apr_time_now() + timeout; + abstime.tv_sec = apr_time_sec(then); + abstime.tv_nsec = apr_time_usec(then) * 1000; /* nanoseconds */ + + rv = pthread_cond_timedwait(&cond->cond, &mutex->mutex, &abstime); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + if (ETIMEDOUT == rv) { + return APR_TIMEUP; + } + return rv; +} + + +APR_DECLARE(apr_status_t) apr_thread_cond_signal(apr_thread_cond_t *cond) +{ + apr_status_t rv; + + rv = pthread_cond_signal(&cond->cond); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + return rv; +} + +APR_DECLARE(apr_status_t) apr_thread_cond_broadcast(apr_thread_cond_t *cond) +{ + apr_status_t rv; + + rv = pthread_cond_broadcast(&cond->cond); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + return rv; +} + +APR_DECLARE(apr_status_t) apr_thread_cond_destroy(apr_thread_cond_t *cond) +{ + return apr_pool_cleanup_run(cond->pool, cond, thread_cond_cleanup); +} + +APR_POOL_IMPLEMENT_ACCESSOR(thread_cond) + +#endif /* APR_HAS_THREADS */ diff --git a/contrib/apr/locks/unix/thread_mutex.c b/contrib/apr/locks/unix/thread_mutex.c new file mode 100644 index 000000000000..73fd1e146210 --- /dev/null +++ b/contrib/apr/locks/unix/thread_mutex.c @@ -0,0 +1,138 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr_arch_thread_mutex.h" +#define APR_WANT_MEMFUNC +#include "apr_want.h" + +#if APR_HAS_THREADS + +static apr_status_t thread_mutex_cleanup(void *data) +{ + apr_thread_mutex_t *mutex = data; + apr_status_t rv; + + rv = pthread_mutex_destroy(&mutex->mutex); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + return rv; +} + +APR_DECLARE(apr_status_t) apr_thread_mutex_create(apr_thread_mutex_t **mutex, + unsigned int flags, + apr_pool_t *pool) +{ + apr_thread_mutex_t *new_mutex; + apr_status_t rv; + +#ifndef HAVE_PTHREAD_MUTEX_RECURSIVE + if (flags & APR_THREAD_MUTEX_NESTED) { + return APR_ENOTIMPL; + } +#endif + + new_mutex = apr_pcalloc(pool, sizeof(apr_thread_mutex_t)); + new_mutex->pool = pool; + +#ifdef HAVE_PTHREAD_MUTEX_RECURSIVE + if (flags & APR_THREAD_MUTEX_NESTED) { + pthread_mutexattr_t mattr; + + rv = pthread_mutexattr_init(&mattr); + if (rv) return rv; + + rv = pthread_mutexattr_settype(&mattr, PTHREAD_MUTEX_RECURSIVE); + if (rv) { + pthread_mutexattr_destroy(&mattr); + return rv; + } + + rv = pthread_mutex_init(&new_mutex->mutex, &mattr); + + pthread_mutexattr_destroy(&mattr); + } else +#endif + rv = pthread_mutex_init(&new_mutex->mutex, NULL); + + if (rv) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + return rv; + } + + apr_pool_cleanup_register(new_mutex->pool, + new_mutex, thread_mutex_cleanup, + apr_pool_cleanup_null); + + *mutex = new_mutex; + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_thread_mutex_lock(apr_thread_mutex_t *mutex) +{ + apr_status_t rv; + + rv = pthread_mutex_lock(&mutex->mutex); +#ifdef HAVE_ZOS_PTHREADS + if (rv) { + rv = errno; + } +#endif + + return rv; +} + +APR_DECLARE(apr_status_t) apr_thread_mutex_trylock(apr_thread_mutex_t *mutex) +{ + apr_status_t rv; + + rv = pthread_mutex_trylock(&mutex->mutex); + if (rv) { +#ifdef HAVE_ZOS_PTHREADS + rv = errno; +#endif + return (rv == EBUSY) ? APR_EBUSY : rv; + } + + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_thread_mutex_unlock(apr_thread_mutex_t *mutex) +{ + apr_status_t status; + + status = pthread_mutex_unlock(&mutex->mutex); +#ifdef HAVE_ZOS_PTHREADS + if (status) { + status = errno; + } +#endif + + return status; +} + +APR_DECLARE(apr_status_t) apr_thread_mutex_destroy(apr_thread_mutex_t *mutex) +{ + return apr_pool_cleanup_run(mutex->pool, mutex, thread_mutex_cleanup); +} + +APR_POOL_IMPLEMENT_ACCESSOR(thread_mutex) + +#endif /* APR_HAS_THREADS */ diff --git a/contrib/apr/locks/unix/thread_rwlock.c b/contrib/apr/locks/unix/thread_rwlock.c new file mode 100644 index 000000000000..0f8b7a79ff76 --- /dev/null +++ b/contrib/apr/locks/unix/thread_rwlock.c @@ -0,0 +1,181 @@ +/* Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "apr_arch_thread_rwlock.h" +#include "apr_private.h" + +#if APR_HAS_THREADS + +#ifdef HAVE_PTHREAD_RWLOCKS + +/* The rwlock must be initialized but not locked by any thread when + * cleanup is called. */ +static apr_status_t thread_rwlock_cleanup(void *data) +{ + apr_thread_rwlock_t *rwlock = (apr_thread_rwlock_t *)data; + apr_status_t stat; + + stat = pthread_rwlock_destroy(&rwlock->rwlock); +#ifdef HAVE_ZOS_PTHREADS + if (stat) { + stat = errno; + } +#endif + return stat; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_create(apr_thread_rwlock_t **rwlock, + apr_pool_t *pool) +{ + apr_thread_rwlock_t *new_rwlock; + apr_status_t stat; + + new_rwlock = apr_palloc(pool, sizeof(apr_thread_rwlock_t)); + new_rwlock->pool = pool; + + if ((stat = pthread_rwlock_init(&new_rwlock->rwlock, NULL))) { +#ifdef HAVE_ZOS_PTHREADS + stat = errno; +#endif + return stat; + } + + apr_pool_cleanup_register(new_rwlock->pool, + (void *)new_rwlock, thread_rwlock_cleanup, + apr_pool_cleanup_null); + + *rwlock = new_rwlock; + return APR_SUCCESS; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_rdlock(apr_thread_rwlock_t *rwlock) +{ + apr_status_t stat; + + stat = pthread_rwlock_rdlock(&rwlock->rwlock); +#ifdef HAVE_ZOS_PTHREADS + if (stat) { + stat = errno; + } +#endif + return stat; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_tryrdlock(apr_thread_rwlock_t *rwlock) +{ + apr_status_t stat; + + stat = pthread_rwlock_tryrdlock(&rwlock->rwlock); +#ifdef HAVE_ZOS_PTHREADS + if (stat) { + stat = errno; + } +#endif + /* Normalize the return code. */ + if (stat == EBUSY) + stat = APR_EBUSY; + return stat; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_wrlock(apr_thread_rwlock_t *rwlock) +{ + apr_status_t stat; + + stat = pthread_rwlock_wrlock(&rwlock->rwlock); +#ifdef HAVE_ZOS_PTHREADS + if (stat) { + stat = errno; + } +#endif + return stat; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_trywrlock(apr_thread_rwlock_t *rwlock) +{ + apr_status_t stat; + + stat = pthread_rwlock_trywrlock(&rwlock->rwlock); +#ifdef HAVE_ZOS_PTHREADS + if (stat) { + stat = errno; + } +#endif + /* Normalize the return code. */ + if (stat == EBUSY) + stat = APR_EBUSY; + return stat; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_unlock(apr_thread_rwlock_t *rwlock) +{ + apr_status_t stat; + + stat = pthread_rwlock_unlock(&rwlock->rwlock); +#ifdef HAVE_ZOS_PTHREADS + if (stat) { + stat = errno; + } +#endif + return stat; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_destroy(apr_thread_rwlock_t *rwlock) +{ + return apr_pool_cleanup_run(rwlock->pool, rwlock, thread_rwlock_cleanup); +} + +#else /* HAVE_PTHREAD_RWLOCKS */ + +APR_DECLARE(apr_status_t) apr_thread_rwlock_create(apr_thread_rwlock_t **rwlock, + apr_pool_t *pool) +{ + return APR_ENOTIMPL; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_rdlock(apr_thread_rwlock_t *rwlock) +{ + return APR_ENOTIMPL; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_tryrdlock(apr_thread_rwlock_t *rwlock) +{ + return APR_ENOTIMPL; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_wrlock(apr_thread_rwlock_t *rwlock) +{ + return APR_ENOTIMPL; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_trywrlock(apr_thread_rwlock_t *rwlock) +{ + return APR_ENOTIMPL; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_unlock(apr_thread_rwlock_t *rwlock) +{ + return APR_ENOTIMPL; +} + +APR_DECLARE(apr_status_t) apr_thread_rwlock_destroy(apr_thread_rwlock_t *rwlock) +{ + return APR_ENOTIMPL; +} + +#endif /* HAVE_PTHREAD_RWLOCKS */ +APR_POOL_IMPLEMENT_ACCESSOR(thread_rwlock) + +#endif /* APR_HAS_THREADS */ |