| /* Copyright 2012 The ChromiumOS Authors |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef __UTIL_GEC_LOCK_H |
| #define __UTIL_GEC_LOCK_H |
| |
| /* |
| * acquire_gec_lock - acquire global lock |
| * |
| * returns 0 to indicate lock acquired |
| * returns >0 to indicate lock was already held |
| * returns <0 to indicate failed to acquire lock |
| */ |
| extern int acquire_gec_lock(int timeout_secs); |
| |
| /* |
| * release_gec_lock - release global lock |
| * |
| * returns 0 if lock was released successfully |
| * returns -1 if lock had not been held before the call |
| */ |
| extern int release_gec_lock(void); |
| |
| #endif /* __UTIL_GEC_LOCK_H */ |
