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30 * Test case for pipe_barrier.
32 * The test succeeds if no thread exits before all the other threads reach
40 #include "os/os_thread.h"
41 #include "os/os_time.h"
42 #include "util/u_atomic.h"
45 #define NUM_THREADS 10
47 static int verbosity
= 0;
49 static pipe_thread threads
[NUM_THREADS
];
50 static pipe_barrier barrier
;
51 static int thread_ids
[NUM_THREADS
];
53 static volatile int waiting
= 0;
54 static volatile int proceeded
= 0;
57 #define LOG(fmt, ...) \
58 if (verbosity > 0) { \
59 fprintf(stdout, fmt, ##__VA_ARGS__); \
62 #define CHECK(_cond) \
64 fprintf(stderr, "%s:%u: `%s` failed\n", __FILE__, __LINE__, #_cond); \
65 _exit(EXIT_FAILURE); \
69 static PIPE_THREAD_ROUTINE(thread_function
, thread_data
)
71 int thread_id
= *((int *) thread_data
);
73 LOG("thread %d starting\n", thread_id
);
74 os_time_sleep(thread_id
* 100 * 1000);
75 LOG("thread %d before barrier\n", thread_id
);
77 CHECK(p_atomic_read(&proceeded
) == 0);
78 p_atomic_inc(&waiting
);
80 pipe_barrier_wait(&barrier
);
82 CHECK(p_atomic_read(&waiting
) == NUM_THREADS
);
84 p_atomic_inc(&proceeded
);
86 LOG("thread %d exiting\n", thread_id
);
92 int main(int argc
, char *argv
[])
96 for (i
= 1; i
< argc
; ++i
) {
97 const char *arg
= argv
[i
];
98 if (strcmp(arg
, "-v") == 0) {
101 fprintf(stderr
, "error: unrecognized option `%s`\n", arg
);
107 setbuf(stdout
, NULL
);
109 LOG("pipe_barrier_test starting\n");
111 pipe_barrier_init(&barrier
, NUM_THREADS
);
113 for (i
= 0; i
< NUM_THREADS
; i
++) {
115 threads
[i
] = pipe_thread_create(thread_function
, (void *) &thread_ids
[i
]);
118 for (i
= 0; i
< NUM_THREADS
; i
++ ) {
119 pipe_thread_wait(threads
[i
]);
122 CHECK(p_atomic_read(&proceeded
) == NUM_THREADS
);
124 pipe_barrier_destroy(&barrier
);
126 LOG("pipe_barrier_test exiting\n");