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+.. comment SPDX-License-Identifier: CC-BY-SA-4.0
+
+.. COMMENT: COPYRIGHT (c) 1988-2002.
+.. COMMENT: On-Line Applications Research Corporation (OAR).
+.. COMMENT: All rights reserved.
+
+Condition Variable Manager
+##########################
+
+Introduction
+============
+
+The condition variable manager ...
+
+The directives provided by the condition variable manager are:
+
+- pthread_condattr_init_ - Initialize a Condition Variable Attribute Set
+
+- pthread_condattr_destroy_ - Destroy a Condition Variable Attribute Set
+
+- pthread_condattr_setpshared_ - Set Process Shared Attribute
+
+- pthread_condattr_getpshared_ - Get Process Shared Attribute
+
+- pthread_cond_init_ - Initialize a Condition Variable
+
+- pthread_cond_destroy_ - Destroy a Condition Variable
+
+- pthread_cond_signal_ - Signal a Condition Variable
+
+- pthread_cond_broadcast_ - Broadcast a Condition Variable
+
+- pthread_cond_wait_ - Wait on a Condition Variable
+
+- pthread_cond_timedwait_ - With with Timeout a Condition Variable
+
+Background
+==========
+
+There is currently no text in this section.
+
+Operations
+==========
+
+There is currently no text in this section.
+
+Directives
+==========
+
+This section details the condition variable manager's directives.  A subsection
+is dedicated to each of this manager's directives and describes the calling
+sequence, related constants, usage, and status codes.
+
+.. _pthread_condattr_init:
+
+pthread_condattr_init - Initialize a Condition Variable Attribute Set
+---------------------------------------------------------------------
+.. index:: pthread_condattr_init
+.. index:: initialize a condition variable attribute set
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_condattr_init(
+        pthread_condattr_t *attr
+    );
+
+**STATUS CODES:**
+
+ * - ``ENOMEM``
+   - Insufficient memory is available to initialize the condition variable
+     attributes object.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_condattr_destroy:
+
+pthread_condattr_destroy - Destroy a Condition Variable Attribute Set
+---------------------------------------------------------------------
+.. index:: pthread_condattr_destroy
+.. index:: destroy a condition variable attribute set
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_condattr_destroy(
+        pthread_condattr_t *attr
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - The attribute object specified is invalid.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_condattr_setpshared:
+
+pthread_condattr_setpshared - Set Process Shared Attribute
+----------------------------------------------------------
+.. index:: pthread_condattr_setpshared
+.. index:: set process shared attribute
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_condattr_setpshared(
+        pthread_condattr_t *attr,
+        int                 pshared
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - Invalid argument passed.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_condattr_getpshared:
+
+pthread_condattr_getpshared - Get Process Shared Attribute
+----------------------------------------------------------
+.. index:: pthread_condattr_getpshared
+.. index:: get process shared attribute
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_condattr_getpshared(
+        const pthread_condattr_t *attr,
+        int                      *pshared
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - Invalid argument passed.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_cond_init:
+
+pthread_cond_init - Initialize a Condition Variable
+---------------------------------------------------
+.. index:: pthread_cond_init
+.. index:: initialize a condition variable
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_cond_init(
+        pthread_cond_t           *cond,
+        const pthread_condattr_t *attr
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EAGAIN``
+   - The system lacked a resource other than memory necessary to create the
+     initialize the condition variable object.
+ * - ``ENOMEM``
+   - Insufficient memory is available to initialize the condition variable
+     object.
+ * - ``EBUSY``
+   - The specified condition variable has already been initialized.
+ * - ``EINVAL``
+   - The specified attribute value is invalid.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_cond_destroy:
+
+pthread_cond_destroy - Destroy a Condition Variable
+---------------------------------------------------
+.. index:: pthread_cond_destroy
+.. index:: destroy a condition variable
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_cond_destroy(
+        pthread_cond_t *cond
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - The specified condition variable is invalid.
+ * - ``EBUSY``
+   - The specified condition variable is currently in use.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_cond_signal:
+
+pthread_cond_signal - Signal a Condition Variable
+-------------------------------------------------
+.. index:: pthread_cond_signal
+.. index:: signal a condition variable
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_cond_signal(
+        pthread_cond_t *cond
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - The specified condition variable is not valid.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+This routine should not be invoked from a handler from an asynchronous signal
+handler or an interrupt service routine.
+
+.. _pthread_cond_broadcast:
+
+pthread_cond_broadcast - Broadcast a Condition Variable
+-------------------------------------------------------
+.. index:: pthread_cond_broadcast
+.. index:: broadcast a condition variable
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_cond_broadcast(
+        pthread_cond_t *cond
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - The specified condition variable is not valid.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+This routine should not be invoked from a handler from an asynchronous signal
+handler or an interrupt service routine.
+
+.. _pthread_cond_wait:
+
+pthread_cond_wait - Wait on a Condition Variable
+------------------------------------------------
+.. index:: pthread_cond_wait
+.. index:: wait on a condition variable
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_cond_wait(
+        pthread_cond_t *cond,
+        pthread_mutex_t *mutex
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - The specified condition variable or mutex is not initialized OR different
+     mutexes were specified for concurrent ``pthread_cond_wait()`` and
+     ``pthread_cond_timedwait()`` operations on the same condition variable OR
+     the mutex was not owned by the current thread at the time of the call.
+
+**DESCRIPTION:**
+
+**NOTES:**
+
+.. _pthread_cond_timedwait:
+
+pthread_cond_timedwait - Wait with Timeout a Condition Variable
+---------------------------------------------------------------
+.. index:: pthread_cond_timedwait
+.. index:: wait with timeout a condition variable
+
+**CALLING SEQUENCE:**
+
+.. code-block:: c
+
+    #include <pthread.h>
+    int pthread_cond_timedwait(
+        pthread_cond_t        *cond,
+        pthread_mutex_t       *mutex,
+        const struct timespec *abstime
+    );
+
+**STATUS CODES:**
+
+.. list-table::
+ :class: rtems-table
+
+ * - ``EINVAL``
+   - The specified condition variable or mutex is not initialized OR different
+     mutexes were specified for concurrent ``pthread_cond_wait()`` and
+     ``pthread_cond_timedwait()`` operations on the same condition variable OR
+     the mutex was not owned by the current thread at the time of the call.
+ * - ``ETIMEDOUT``
+   - The specified time has elapsed without the condition variable being
+     satisfied.
+
+**DESCRIPTION:**
+
+**NOTES:**