60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <uv.h>
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#define FIB_UNTIL 25
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uv_loop_t *loop;
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uv_work_t fib_reqs[FIB_UNTIL];
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long fib_(long t) {
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if (t == 0 || t == 1)
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return 1;
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else
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return fib_(t-1) + fib_(t-2);
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}
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void fib(uv_work_t *req) {
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int n = *(int *) req->data;
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if (random() % 2)
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sleep(1);
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else
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sleep(3);
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long fib = fib_(n);
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fprintf(stderr, "%dth fibonacci is %lu\n", n, fib);
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}
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void after_fib(uv_work_t *req, int status) {
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if (status == UV_ECANCELED)
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fprintf(stderr, "Calculation of %d cancelled.\n", *(int *) req->data);
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}
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void signal_handler(uv_signal_t *req, int signum)
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{
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printf("Signal received!\n");
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int i;
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for (i = 0; i < FIB_UNTIL; i++) {
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uv_cancel((uv_req_t*) &fib_reqs[i]);
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}
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uv_signal_stop(req);
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}
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int main() {
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loop = uv_default_loop();
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int data[FIB_UNTIL];
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int i;
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for (i = 0; i < FIB_UNTIL; i++) {
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data[i] = i;
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fib_reqs[i].data = (void *) &data[i];
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uv_queue_work(loop, &fib_reqs[i], fib, after_fib);
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}
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uv_signal_t sig;
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uv_signal_init(loop, &sig);
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uv_signal_start(&sig, signal_handler, SIGINT);
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return uv_run(loop, UV_RUN_DEFAULT);
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}
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