1 files changed, 245 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..02173513b7f2
--- /dev/null
+++ b/contrib/apr/locks/unix/global_mutex.c
@@ -0,0 +1,245 @@
+/* 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->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_timedlock(apr_global_mutex_t *mutex,
+                                                 apr_interval_time_t timeout)
+{
+#if APR_HAS_TIMEDLOCKS
+    apr_status_t rv;
+
+#if APR_HAS_THREADS
+    if (mutex->thread_mutex) {
+        apr_time_t expiry = 0;
+        if (timeout > 0) {
+            expiry = apr_time_now() + timeout;
+        }
+        rv = apr_thread_mutex_timedlock(mutex->thread_mutex, timeout);
+        if (rv != APR_SUCCESS) {
+            return rv;
+        }
+        if (expiry) {
+            timeout = expiry - apr_time_now();
+            if (timeout < 0) {
+                timeout = 0;
+            }
+        }
+    }
+#endif /* APR_HAS_THREADS */
+
+    rv = apr_proc_mutex_timedlock(mutex->proc_mutex, timeout);
+
+#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;
+#else  /* APR_HAS_TIMEDLOCKS */
+    return APR_ENOTIMPL;
+#endif
+}
+
+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(apr_lockmech_e) apr_global_mutex_mech(apr_global_mutex_t *mutex)
+{
+    return apr_proc_mutex_mech(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_PERMS_SET_IMPLEMENT(global_mutex)
+{
+    apr_status_t rv;
+    apr_global_mutex_t *mutex = (apr_global_mutex_t *)theglobal_mutex;
+
+    rv = APR_PERMS_SET_FN(proc_mutex)(mutex->proc_mutex, perms, uid, gid);
+    return rv;
+}
+
+APR_POOL_IMPLEMENT_ACCESSOR(global_mutex)
+