* #27232: jni: added pjproject checkout as regular git content
We will remove it once the next release of pjsip (with Android support)
comes out and is merged into SFLphone.
diff --git a/jni/pjproject-android/pjlib/src/pj/os_rwmutex.c b/jni/pjproject-android/pjlib/src/pj/os_rwmutex.c
new file mode 100644
index 0000000..d392353
--- /dev/null
+++ b/jni/pjproject-android/pjlib/src/pj/os_rwmutex.c
@@ -0,0 +1,163 @@
+/* $Id: os_rwmutex.c 3553 2011-05-05 06:14:19Z nanang $ */
+/*
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * Note:
+ *
+ * DO NOT BUILD THIS FILE DIRECTLY. THIS FILE WILL BE INCLUDED BY os_core_*.c
+ * WHEN MACRO PJ_EMULATE_RWMUTEX IS SET.
+ */
+
+/*
+ * os_rwmutex.c:
+ *
+ * Implementation of Read-Write mutex for platforms that lack it (e.g.
+ * Win32, RTEMS).
+ */
+
+
+struct pj_rwmutex_t
+{
+ pj_mutex_t *read_lock;
+ /* write_lock must use semaphore, because write_lock may be released
+ * by thread other than the thread that acquire the write_lock in the
+ * first place.
+ */
+ pj_sem_t *write_lock;
+ pj_int32_t reader_count;
+};
+
+/*
+ * Create reader/writer mutex.
+ *
+ */
+PJ_DEF(pj_status_t) pj_rwmutex_create(pj_pool_t *pool, const char *name,
+ pj_rwmutex_t **p_mutex)
+{
+ pj_status_t status;
+ pj_rwmutex_t *rwmutex;
+
+ PJ_ASSERT_RETURN(pool && p_mutex, PJ_EINVAL);
+
+ *p_mutex = NULL;
+ rwmutex = PJ_POOL_ALLOC_T(pool, pj_rwmutex_t);
+
+ status = pj_mutex_create_simple(pool, name, &rwmutex ->read_lock);
+ if (status != PJ_SUCCESS)
+ return status;
+
+ status = pj_sem_create(pool, name, 1, 1, &rwmutex->write_lock);
+ if (status != PJ_SUCCESS) {
+ pj_mutex_destroy(rwmutex->read_lock);
+ return status;
+ }
+
+ rwmutex->reader_count = 0;
+ *p_mutex = rwmutex;
+ return PJ_SUCCESS;
+}
+
+/*
+ * Lock the mutex for reading.
+ *
+ */
+PJ_DEF(pj_status_t) pj_rwmutex_lock_read(pj_rwmutex_t *mutex)
+{
+ pj_status_t status;
+
+ PJ_ASSERT_RETURN(mutex, PJ_EINVAL);
+
+ status = pj_mutex_lock(mutex->read_lock);
+ if (status != PJ_SUCCESS) {
+ pj_assert(!"This pretty much is unexpected");
+ return status;
+ }
+
+ mutex->reader_count++;
+
+ pj_assert(mutex->reader_count < 0x7FFFFFF0L);
+
+ if (mutex->reader_count == 1)
+ pj_sem_wait(mutex->write_lock);
+
+ status = pj_mutex_unlock(mutex->read_lock);
+ return status;
+}
+
+/*
+ * Lock the mutex for writing.
+ *
+ */
+PJ_DEF(pj_status_t) pj_rwmutex_lock_write(pj_rwmutex_t *mutex)
+{
+ PJ_ASSERT_RETURN(mutex, PJ_EINVAL);
+ return pj_sem_wait(mutex->write_lock);
+}
+
+/*
+ * Release read lock.
+ *
+ */
+PJ_DEF(pj_status_t) pj_rwmutex_unlock_read(pj_rwmutex_t *mutex)
+{
+ pj_status_t status;
+
+ PJ_ASSERT_RETURN(mutex, PJ_EINVAL);
+
+ status = pj_mutex_lock(mutex->read_lock);
+ if (status != PJ_SUCCESS) {
+ pj_assert(!"This pretty much is unexpected");
+ return status;
+ }
+
+ pj_assert(mutex->reader_count >= 1);
+
+ --mutex->reader_count;
+ if (mutex->reader_count == 0)
+ pj_sem_post(mutex->write_lock);
+
+ status = pj_mutex_unlock(mutex->read_lock);
+ return status;
+}
+
+/*
+ * Release write lock.
+ *
+ */
+PJ_DEF(pj_status_t) pj_rwmutex_unlock_write(pj_rwmutex_t *mutex)
+{
+ PJ_ASSERT_RETURN(mutex, PJ_EINVAL);
+ pj_assert(mutex->reader_count <= 1);
+ return pj_sem_post(mutex->write_lock);
+}
+
+
+/*
+ * Destroy reader/writer mutex.
+ *
+ */
+PJ_DEF(pj_status_t) pj_rwmutex_destroy(pj_rwmutex_t *mutex)
+{
+ PJ_ASSERT_RETURN(mutex, PJ_EINVAL);
+ pj_mutex_destroy(mutex->read_lock);
+ pj_sem_destroy(mutex->write_lock);
+ return PJ_SUCCESS;
+}
+