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29 lines
862 B
C
29 lines
862 B
C
/********************************************************
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* An example source module to accompany...
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*
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* "Using POSIX Threads: Programming with Pthreads"
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* by Brad nichols, Dick Buttlar, Jackie Farrell
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* O'Reilly & Associates, Inc.
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*
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********************************************************
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* rdwr.h --
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*
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* Include file for reader/writer locks
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*/
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typedef struct rdwr_var {
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int readers_reading;
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int writer_writing;
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pthread_mutex_t mutex;
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pthread_cond_t lock_free;
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} pthread_rdwr_t;
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typedef void * pthread_rdwrattr_t;
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#define pthread_rdwrattr_default NULL;
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int pthread_rdwr_init_np(pthread_rdwr_t *rdwrp, pthread_rdwrattr_t *attrp);
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int pthread_rdwr_rlock_np(pthread_rdwr_t *rdwrp);
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int pthread_rdwr_runlock_np(pthread_rdwr_t *rdwrp);
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int pthread_rdwr_wlock_np(pthread_rdwr_t *rdwrp);
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int pthread_rdwr_wunlock_np(pthread_rdwr_t *rdwrp);
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