| /** | 
 |  * @file event_buffer.h | 
 |  * | 
 |  * @remark Copyright 2002 OProfile authors | 
 |  * @remark Read the file COPYING | 
 |  * | 
 |  * @author John Levon <levon@movementarian.org> | 
 |  */ | 
 |  | 
 | #ifndef EVENT_BUFFER_H | 
 | #define EVENT_BUFFER_H | 
 |  | 
 | int alloc_event_buffer(void); | 
 |  | 
 | void free_event_buffer(void); | 
 |  | 
 | /** | 
 |  * Add data to the event buffer. | 
 |  * The data passed is free-form, but typically consists of | 
 |  * file offsets, dcookies, context information, and ESCAPE codes. | 
 |  */ | 
 | void add_event_entry(unsigned long data); | 
 |  | 
 | /* wake up the process sleeping on the event file */ | 
 | void wake_up_buffer_waiter(void); | 
 |  | 
 | #define INVALID_COOKIE ~0UL | 
 | #define NO_COOKIE 0UL | 
 |  | 
 | #endif /* EVENT_BUFFER_H */ |