[glib] Add some more rw lock tests

[Matthias Clasen <matthiasc src gnome org>]

commit 798a7d5abee46eb8b1ddb1c72ffa17a9cefc4ab0
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Sep 23 06:31:12 2011 -0400

    Add some more rw lock tests
    
    These test some simple mixed reader/writer api usage.

 glib/tests/rwlock.c |   50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 50 insertions(+), 0 deletions(-)
---
diff --git a/glib/tests/rwlock.c b/glib/tests/rwlock.c
index 95a1dd1..17869ca 100644
--- a/glib/tests/rwlock.c
+++ b/glib/tests/rwlock.c
@@ -63,6 +63,53 @@ test_rwlock3 (void)
   g_rw_lock_clear (&lock);
 }
 
+static void
+test_rwlock4 (void)
+{
+  GRWLock lock = G_RW_LOCK_INIT;
+
+  g_rw_lock_reader_lock (&lock);
+  g_rw_lock_reader_unlock (&lock);
+  g_rw_lock_reader_lock (&lock);
+  g_rw_lock_reader_unlock (&lock);
+  g_rw_lock_clear (&lock);
+}
+
+static void
+test_rwlock5 (void)
+{
+  GRWLock lock = G_RW_LOCK_INIT;
+  gboolean ret;
+
+  ret = g_rw_lock_reader_trylock (&lock);
+  g_assert (ret);
+  ret = g_rw_lock_reader_trylock (&lock);
+  g_assert (ret);
+
+  g_rw_lock_reader_unlock (&lock);
+  g_rw_lock_reader_unlock (&lock);
+
+  g_rw_lock_clear (&lock);
+}
+
+static void
+test_rwlock6 (void)
+{
+  GRWLock lock = G_RW_LOCK_INIT;
+  gboolean ret;
+
+  g_rw_lock_writer_lock (&lock);
+  ret = g_rw_lock_reader_trylock (&lock);
+  g_assert (!ret);
+  g_rw_lock_writer_unlock (&lock);
+
+  g_rw_lock_reader_lock (&lock);
+  ret = g_rw_lock_writer_trylock (&lock);
+  g_assert (!ret);
+  g_rw_lock_reader_unlock (&lock);
+
+  g_rw_lock_clear (&lock);
+}
 
 int
 main (int argc, char *argv[])
@@ -72,6 +119,9 @@ main (int argc, char *argv[])
   g_test_add_func ("/thread/rwlock1", test_rwlock1);
   g_test_add_func ("/thread/rwlock2", test_rwlock2);
   g_test_add_func ("/thread/rwlock3", test_rwlock3);
+  g_test_add_func ("/thread/rwlock4", test_rwlock4);
+  g_test_add_func ("/thread/rwlock5", test_rwlock5);
+  g_test_add_func ("/thread/rwlock6", test_rwlock6);
 
   return g_test_run ();
 }