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/* { dg-do run } */
#include "ffitest.h"
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#define NUM_THREADS 20
#if defined(_POSIX_BARRIERS) && _POSIX_BARRIERS > 0
pthread_barrier_t barrier;
#endif
typedef float (*callback_fn)(float, float);
void callback(ffi_cif *cif __UNUSED__, void *ret, void **args, void *userdata __UNUSED__) {
float a = *(float *)args[0];
float b = *(float *)args[1];
*(float *)ret = a / 2 + b / 2;
}
void *thread_func(void *arg) {
#if defined(_POSIX_BARRIERS) && _POSIX_BARRIERS > 0
pthread_barrier_wait(&barrier);
#endif
ffi_cif cif;
ffi_type *args[2] = { &ffi_type_float, &ffi_type_float };
if (ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 2, &ffi_type_float, args) != FFI_OK) {
fprintf(stderr, "ffi_prep_cif failed\n");
return NULL;
}
ffi_closure *closure = ffi_closure_alloc(sizeof(ffi_closure), (void **)&arg);
if (ffi_prep_closure_loc(closure, &cif, callback, NULL, arg) != FFI_OK) {
fprintf(stderr, "ffi_prep_closure_loc failed\n");
return NULL;
}
callback_fn fn = (callback_fn)arg;
(void) fn(4.0f, 6.0f);
ffi_closure_free(closure);
return NULL;
}
int main() {
pthread_t threads[NUM_THREADS];
#if defined(_POSIX_BARRIERS) && _POSIX_BARRIERS > 0
pthread_barrier_init(&barrier, NULL, NUM_THREADS);
#endif
for (int i = 0; i < NUM_THREADS; ++i) {
if (pthread_create(&threads[i], NULL, thread_func, NULL) != 0) {
perror("pthread_create");
exit(EXIT_FAILURE);
}
}
for (int i = 0; i < NUM_THREADS; ++i) {
pthread_join(threads[i], NULL);
}
#if defined(_POSIX_BARRIERS) && _POSIX_BARRIERS > 0
pthread_barrier_destroy(&barrier);
#endif
printf("Completed\n");
return 0;
}
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