empire/empserver
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(loc_RunThread, empth_init, empth_threadMain, empth_yield)

Browse source 
(empth_select, empth_sleep, empth_wait_for_signal)
(empth_sem_wait) [EMPTH_W32]: Add the ability to wait additional
event in loc_RunThread() when acquiring the hThread mutex.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock): New.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock)
[EMPTH_W32]: WIN32 implementation.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock)
(lwp_rwlock, lwp_rwlock_create, lwp_rwlock_destroy)
(lwp_rwlock_wrlock, lwp_rwlock_rdlock, lwp_rwlock_unlock)
[EMPTH_LWP]: LWP implementation.

(empth_rwlock_t, empth_rwlock_create, empth_rwlock_destroy)
(empth_rwlock_wrlock, empth_rwlock_rdlock, empth_rwlock_unlock)
[EMPTH_POSIX]: pthread implementation.
This commit is contained in:
Ron Koenderink 2007-01-15 12:45:35 +00:00
parent 8c65fbc2be
commit 71e0f98825
6 changed files with 409 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

43
include/empthread.h
View file

@ -31,7 +31,7 @@
* Sasha Mikheev
* Doug Hay, 1998
* Steve McClure, 1998
* Markus Armbruster, 2005-2006
* Markus Armbruster, 2005-2007
*/
/*
@ -74,6 +74,9 @@ typedef struct lwpProc empth_t;
/* empth_sem_t * represents a semaphore */
typedef struct lwpSem empth_sem_t;
/* empth_rwlock_t * represents a read-write lock */
typedef struct lwp_rwlock empth_rwlock_t;
/* Flags for empth_select(): whether to sleep on input or output */
#define EMPTH_FD_READ LWP_FD_READ
#define EMPTH_FD_WRITE LWP_FD_WRITE
@ -95,6 +98,7 @@ typedef struct lwpSem empth_sem_t;
typedef struct empth_t empth_t;
typedef struct empth_sem_t empth_sem_t;
typedef struct empth_rwlock_t empth_rwlock_t;
#endif /* EMPTH_POSIX */
@ -108,6 +112,7 @@ typedef struct empth_sem_t empth_sem_t;
typedef struct loc_Thread_t empth_t;
typedef struct loc_Sem_t empth_sem_t;
typedef struct loc_RWLock_t empth_rwlock_t;
void empth_request_shutdown(void);
#endif /* EMPTH_W32 */
@ -220,6 +225,42 @@ void empth_sem_signal(empth_sem_t *sem);
*/
void empth_sem_wait(empth_sem_t *sem);
/*
* Create a read-write lock.
* NAME is its name, it is used for debugging.
* Return the reade-write lock, or NULL on error.
*/
empth_rwlock_t *empth_rwlock_create(char *name);
/*
* Destroy RWLOCK.
*/
void empth_rwlock_destroy(empth_rwlock_t *rwlock);
/*
* Lock RWLOCK for writing.
* A read-write lock can be locked for writing only when it is
* unlocked. If this is not the case, put the current thread to sleep
* until it is.
*/
void empth_rwlock_wrlock(empth_rwlock_t *rwlock);
/*
* Lock RWLOCK for reading.
* A read-write lock can be locked for reading only when it is not
* locked for writing. If this is not the case, put the current
* thread to sleep until it is. Must not starve writers, and may
* sleep to avoid that.
*/
void empth_rwlock_rdlock(empth_rwlock_t *rwlock);
/*
* Unlock read-write lock RWLOCK.
* The current thread must hold RWLOCK.
* Wake up threads that can now lock it.
*/
void empth_rwlock_unlock(empth_rwlock_t *rwlock);
/*
* Stuff for implementations, not for clients.