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原帖由 alexhappy 于 2009-2-5 14:42 發(fā)表 ![]()
you sure?
sure. 我有測(cè)試代碼
或者pthread_condattr有什么屬性可以設(shè)？
- #include <unistd.h>
- #include <stdio.h>
- #include <pthread.h>
- pthread_mutex_t mutex;
- pthread_cond_t cond;
- void *thread( void *arg )
- {
- printf( "Entering thread\n" );
- pthread_mutex_lock( &mutex );
- pthread_mutex_lock( &mutex );
- printf( "Before condition wait\n" );
-
- pthread_cond_wait( &cond, &mutex );
- printf( "After condition wait\n" );
- pthread_mutex_unlock( &mutex );
- pthread_mutex_unlock( &mutex );
- return NULL;
- }
- int main( )
- {
- pthread_t thread_id;
- /* Create recursive mutex */
- pthread_mutexattr_t attr;
- pthread_mutexattr_init( &attr );
- pthread_mutexattr_settype( &attr, PTHREAD_MUTEX_RECURSIVE );
- pthread_mutex_init( &mutex, &attr );
- pthread_mutexattr_destroy( &attr );
- pthread_cond_init( &cond, NULL );
- /* Create a thread to wait on the condition */
- pthread_create( &thread_id, NULL, &thread, NULL );
- sleep( 1 );
- printf( "Before mutex Lock\n" );
- pthread_mutex_lock( &mutex );
- printf("After mutex Lock\n");
- pthread_cond_signal( &cond );
- pthread_mutex_unlock( &mutex );
- pthread_join( thread_id, NULL );
- pthread_cond_destroy( &cond );
- pthread_mutex_destroy( &mutex );
- return 0;
- }
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發(fā)表于 2009-02-05 14:36
發(fā)表于 2009-02-05 23:20
