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Added pthread rwlock support.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25470 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2008-05-12 13:56:11 +00:00
parent b5e3c0a1ea
commit 370602bff6
3 changed files with 477 additions and 3 deletions
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headers/posix/pthread.h
+45 -2
View File
@@ -6,6 +6,7 @@
#define _PTHREAD_H_
#include <stdint.h>
#include <time.h>
@@ -17,8 +18,8 @@ typedef struct _pthread_cond *pthread_cond_t;
typedef struct _pthread_condattr *pthread_condattr_t;
typedef int pthread_key_t;
typedef struct _pthread_once pthread_once_t;
typedef struct _pthread_rwlock *pthread_rwlock_t;
typedef struct _pthread_rwlockattr *pthread_rwlockattr_t;
typedef struct _pthread_rwlock pthread_rwlock_t;
typedef struct _pthread_rwlockattr pthread_rwlockattr_t;
typedef struct _pthread_barrier *pthread_barrier_t;
typedef struct _pthread_barrierattr *pthread_barrierattr_t;
typedef struct _pthread_spinlock *pthread_spinlock_t;
@@ -28,6 +29,26 @@ struct _pthread_once {
pthread_mutex_t mutex;
};
struct _pthread_rwlock {
uint32_t flags;
int32_t owner;
union {
struct {
int32_t sem;
} shared;
struct {
int32_t lock_sem;
int32_t lock_count;
int32_t reader_count;
int32_t writer_count;
void* waiters[2];
} local;
};
};
struct _pthread_rwlockattr {
uint32_t flags;
};
enum pthread_mutex_type {
PTHREAD_MUTEX_DEFAULT,
@@ -159,6 +180,28 @@ extern int pthread_condattr_getpshared(const pthread_condattr_t *condAttr,
extern int pthread_condattr_setpshared(pthread_condattr_t *condAttr,
int processShared);
/* rwlock functions */
extern int pthread_rwlock_init(pthread_rwlock_t *lock,
const pthread_rwlockattr_t *attr);
extern int pthread_rwlock_destroy(pthread_rwlock_t *lock);
extern int pthread_rwlock_rdlock(pthread_rwlock_t *lock);
extern int pthread_rwlock_tryrdlock(pthread_rwlock_t *lock);
extern int pthread_rwlock_timedrdlock(pthread_rwlock_t *lock,
const struct timespec *timeout);
extern int pthread_rwlock_wrlock(pthread_rwlock_t *lock);
extern int pthread_rwlock_trywrlock(pthread_rwlock_t *lock);
extern int pthread_rwlock_timedwrlock(pthread_rwlock_t *lock,
const struct timespec *timeout);
extern int pthread_rwlock_unlock(pthread_rwlock_t *lock);
/* rwlock attribute functions */
extern int pthread_rwlockattr_init(pthread_rwlockattr_t *attr);
extern int pthread_rwlockattr_destroy(pthread_rwlockattr_t *attr);
extern int pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attr,
int *shared);
extern int pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attr,
int shared);
/* misc. functions */
extern int pthread_atfork(void (*prepare)(void), void (*parent)(void),
void (*child)(void));