fastlock.h File Reference
Assembler routines for fast architecture dependend locking. More...
#include <unistd.h>
Go to the source code of this file.
Defines | |
| #define | init_lock(l) (l)=0 |
| #define | sched_yield() sleep(0) |
Typedefs | |
| typedef volatile int | fl_lock_t |
Functions | |
| static void | get_lock (fl_lock_t *lock) |
| Set a lock. | |
| static void | release_lock (fl_lock_t *lock) |
| Release a lock. | |
| static int | tsl (fl_lock_t *lock) |
| Test and set a lock. Used by the get_lock function. | |
Detailed Description
Assembler routines for fast architecture dependend locking.Contains the assembler routines for the fast architecture dependend locking primitives used by the server. This routines are needed e.g. to protect shared data structures that are accessed from muliple processes.
- Todo:
- replace this with the assembler routines provided by the linux kernel
Definition in file fastlock.h.
Define Documentation
| #define init_lock | ( | l | ) | (l)=0 |
Initialize a lock, zero is unlocked.
Definition at line 63 of file fastlock.h.
| #define sched_yield | ( | ) | sleep(0) |
Fake sched_yield if no unistd.h include is available
Definition at line 56 of file fastlock.h.
Referenced by get_lock().
Typedef Documentation
| typedef volatile int fl_lock_t |
The actual lock
Definition at line 60 of file fastlock.h.
Function Documentation
| static void get_lock | ( | fl_lock_t * | lock | ) | [inline, static] |
Set a lock.
- Parameters:
-
lock the lock that should be set
- See also:
- tsl
Definition at line 172 of file fastlock.h.
References sched_yield, and tsl().
Referenced by destroy_linkers(), get_profile_size(), link_dlg_profile(), and mi_profile_list().
| static void release_lock | ( | fl_lock_t * | lock | ) | [inline, static] |
Release a lock.
- Parameters:
-
lock the lock that should be released
Definition at line 194 of file fastlock.h.
Referenced by destroy_linkers(), get_profile_size(), link_dlg_profile(), and mi_profile_list().
| static int tsl | ( | fl_lock_t * | lock | ) | [inline, static] |
Test and set a lock. Used by the get_lock function.
- Parameters:
-
lock the lock that should be set
- Returns:
- 1 if the lock is held by someone else, 0 otherwise
- See also:
- get_lock
Definition at line 73 of file fastlock.h.
Referenced by get_lock().
