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Diffstat (limited to '')
-rw-r--r-- | src/test/system/cross_process_sem.h | 40 |
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 000000000..0cbedf475 --- /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; +}; |