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30 * Test case for util_barrier.
32 * The test succeeds if no thread exits before all the other threads reach
41 #include "util/os_time.h"
42 #include "util/u_atomic.h"
43 #include "util/u_thread.h"
46 #define NUM_THREADS 10
48 static int verbosity
= 0;
50 static thrd_t threads
[NUM_THREADS
];
51 static util_barrier barrier
;
52 static int thread_ids
[NUM_THREADS
];
54 static volatile int waiting
= 0;
55 static volatile int proceeded
= 0;
58 #define LOG(fmt, ...) \
59 if (verbosity > 0) { \
60 fprintf(stdout, fmt, ##__VA_ARGS__); \
63 #define CHECK(_cond) \
65 fprintf(stderr, "%s:%u: `%s` failed\n", __FILE__, __LINE__, #_cond); \
66 _exit(EXIT_FAILURE); \
71 thread_function(void *thread_data
)
73 int thread_id
= *((int *) thread_data
);
75 LOG("thread %d starting\n", thread_id
);
76 os_time_sleep(thread_id
* 100 * 1000);
77 LOG("thread %d before barrier\n", thread_id
);
79 CHECK(p_atomic_read(&proceeded
) == 0);
80 p_atomic_inc(&waiting
);
82 util_barrier_wait(&barrier
);
84 CHECK(p_atomic_read(&waiting
) == NUM_THREADS
);
86 p_atomic_inc(&proceeded
);
88 LOG("thread %d exiting\n", thread_id
);
94 int main(int argc
, char *argv
[])
98 for (i
= 1; i
< argc
; ++i
) {
99 const char *arg
= argv
[i
];
100 if (strcmp(arg
, "-v") == 0) {
103 fprintf(stderr
, "error: unrecognized option `%s`\n", arg
);
109 setbuf(stdout
, NULL
);
111 LOG("pipe_barrier_test starting\n");
113 util_barrier_init(&barrier
, NUM_THREADS
);
115 for (i
= 0; i
< NUM_THREADS
; i
++) {
117 threads
[i
] = u_thread_create(thread_function
, (void *) &thread_ids
[i
]);
120 for (i
= 0; i
< NUM_THREADS
; i
++ ) {
121 thrd_join(threads
[i
], NULL
);
124 CHECK(p_atomic_read(&proceeded
) == NUM_THREADS
);
126 util_barrier_destroy(&barrier
);
128 LOG("pipe_barrier_test exiting\n");