Cross Reference: /system/extras/tests/bionic/libc/common/test

Lines Matching refs:semaphore
29 #include <semaphore.h>
36 /* a simple semaphore test, using three threads
38  *  a semaphore is initialized with a value of 1
42  *  Thread 1 takes the semaphore, then sleeps for 2 seconds, then post the semaphore
43  *  Thread 2 sleeps for 1 second, then waits the semaphore, sleeps for 2 seconds, then post the semaphoe
44  *  Thread 3 sleeps 3 seconds, waits for the semaphore
47 static  sem_t   semaphore;
52     printf( "thread 1: waiting for semaphore\n" );
53     if ( sem_wait( &semaphore ) < 0 ) {
54         printf( "thread 1: could not wait for semaphore: %s\n", strerror(errno) );
57     printf( "thread 1: got the semaphore ! sleeping for 2 seconds\n" );
59     printf( "thread 1: awake !! posting semaphore\n" );
60     if ( sem_post( &semaphore ) < 0 ) {
61         printf( "thread 2: could not post semaphore: %s\n", strerror(errno) );
72     printf( "thread 2: awake !! waiting for semaphore\n" );
73     if ( sem_wait( &semaphore ) < 0 ) {
74         printf( "thread 2: could not wait for semaphore: %s\n", strerror(errno) );
77     printf( "thread 2: got the semaphore ! sleeping for 2 seconds\n" );
79     printf( "thread 2: awake !! posting semaphore\n" );
80     if ( sem_post( &semaphore ) < 0 ) {
81         printf( "thread 2: could not post semaphore: %s\n", strerror(errno) );
93     printf( "thread 3: awake !! waiting for semaphore\n" );
94     if ( sem_wait( &semaphore ) < 0 ) {
95         printf( "thread 3: could not wait for semaphore: %s\n", strerror(errno) );
98     printf( "thread 3: got semaphore. quitting\n" );
116     if ( sem_init( &semaphore, 0, 1 ) < 0 ) {
117         printf( "could not initialize semaphore: %s\n", strerror(errno) );