Function main

examples/ucontext-cp.c:177–268

}

int main(int argc, char *argv[])
{
	struct io_uring ring;
	int i, req_count, ret;
	int success = 0, failure = 0;

	if (argc < 3) {
		fprintf(stderr, "%s: infile1 outfile1 [infile2 outfile2 [...]]\n", argv[0]);
		return 1;
	}

	ret = io_uring_queue_init(QD, &ring, 0);
	if (ret < 0) {
		fprintf(stderr, "queue_init: %s\n", strerror(-ret));
		return -1;
	}

	req_count = (argc - 1) / 2;
	printf("copying %d files...\n", req_count);

	for (i = 1; i < argc; i += 2) {
		int infd, outfd;

		async_context *pctx = malloc(sizeof(*pctx));

		if (!pctx || setup_context(pctx, &ring))
			return 1;

		infd = open(argv[i], O_RDONLY);
		if (infd < 0) {
			perror("open infile");
			return 1;
		}
		outfd = open(argv[i + 1], O_WRONLY | O_CREAT | O_TRUNC, 0644);
		if (outfd < 0) {
			perror("open outfile");
			return 1;
		}

		arguments_bundle *pbundle = malloc(sizeof(*pbundle));
		pbundle->pctx = pctx;
		pbundle->psuccess = &success;
		pbundle->pfailure = &failure;
		pbundle->infd = infd;
		pbundle->outfd = outfd;

		makecontext(&pctx->ctx_fnew, (void (*)(void)) copy_file_wrapper, 1, pbundle);

		if (swapcontext(&pctx->ctx_main, &pctx->ctx_fnew)) {
			perror("swapcontext");
			return 1;
		}
	}

	/* event loop */
	while (success + failure < req_count) {
		struct io_uring_cqe *cqe;