summaryrefslogtreecommitdiffstats
path: root/src/test/system/cross_process_sem.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/test/system/cross_process_sem.h')
-rw-r--r--src/test/system/cross_process_sem.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/test/system/cross_process_sem.h b/src/test/system/cross_process_sem.h
new file mode 100644
index 00000000..0cbedf47
--- /dev/null
+++ b/src/test/system/cross_process_sem.h
@@ -0,0 +1,40 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+* Ceph - scalable distributed file system
+*
+* Copyright (C) 2011 New Dream Network
+*
+* This is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License version 2.1, as published by the Free Software
+* Foundation. See file COPYING.
+*
+*/
+
+struct cross_process_sem_data_t;
+
+class CrossProcessSem
+{
+public:
+ static int create(int initial_val, CrossProcessSem** ret);
+ ~CrossProcessSem();
+
+ /* Initialize the semaphore. Must be called before any operations */
+ int init();
+
+ /* Semaphore wait */
+ void wait();
+
+ /* Semaphore post */
+ void post();
+
+ /* Reinitialize the semaphore to the desired value.
+ * NOT thread-safe if it is in use at the time!
+ */
+ int reinit(int dval);
+
+private:
+ explicit CrossProcessSem(struct cross_process_sem_data_t *data);
+ struct cross_process_sem_data_t *m_data;
+};