Add stubs for pthread_condattr_{get,set}clock

implement.h

@@ -251,6 +251,8 @@ struct pthread_cond_t_
 struct pthread_condattr_t_
   {
     int pshared;
+    // TODO: use clock_id
+    clockid_t clock_id;
   };
 
 #define PTE_RWLOCK_MAGIC 0xfacade2

pthread.h

@@ -846,6 +846,12 @@ extern "C" {
     int  pthread_condattr_setpshared (pthread_condattr_t * attr,
                                       int pshared);
 
+    int  pthread_condattr_getclock (const pthread_condattr_t * attr,
+                                    clockid_t *clock_id);
+
+    int  pthread_condattr_setclock (pthread_condattr_t * attr,
+                                    clockid_t clock_id);
+
     /*
      * Condition Variable Functions
      */

pthread_condattr_getclock.c

@@ -0,0 +1,20 @@
+#include "pthread.h"
+#include "implement.h"
+
+int
+pthread_condattr_getclock (const pthread_condattr_t * attr, clockid_t *clock_id)
+{
+  int result;
+
+  if ((attr != NULL && *attr != NULL) && (clock_id != NULL))
+    {
+      *clock_id = (*attr)->clock_id;
+      result = 0;
+    }
+  else
+    {
+      result = EINVAL;
+    }
+
+  return result;
+}

pthread_condattr_setclock.c

@@ -0,0 +1,22 @@
+#include "pthread.h"
+#include "implement.h"
+
+int
+pthread_condattr_setclock (pthread_condattr_t * attr, clockid_t clock_id)
+{
+  int result;
+
+  if ((attr != NULL && *attr != NULL)
+      && ((clock_id == CLOCK_REALTIME)
+          || (clock_id == CLOCK_MONOTONIC)))
+    {
+      (*attr)->clock_id = clock_id;
+      result = 0;
+    }
+  else
+    {
+      result = EINVAL;
+    }
+
+  return result;
+}