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115 lines
3.1 KiB
C
115 lines
3.1 KiB
C
/*
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* Copyright (c) 2008-2011 Apple Inc. All rights reserved.
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*
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* @APPLE_APACHE_LICENSE_HEADER_START@
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @APPLE_APACHE_LICENSE_HEADER_END@
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*/
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#include <sys/types.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
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#include <unistd.h>
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#endif
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#include <errno.h>
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#include <dispatch/dispatch.h>
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#include <bsdtests.h>
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#include "dispatch_test.h"
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static size_t bytes_total;
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static size_t bytes_read;
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static void
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test_fin(void *cxt)
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{
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test_ptr("test_fin run", cxt, cxt);
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test_stop();
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}
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int
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main(void)
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{
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char *path = dispatch_test_get_large_file();
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dispatch_test_start("Dispatch Source Read");
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dispatch_fd_t infd = dispatch_test_fd_open(path, O_RDONLY);
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if (infd == -1) {
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perror(path);
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exit(EXIT_FAILURE);
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}
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dispatch_test_release_large_file(path);
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free(path);
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bytes_total = (size_t)dispatch_test_fd_lseek(infd, 0, SEEK_END);
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dispatch_test_fd_lseek(infd, 0, SEEK_SET);
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#if !defined(_WIN32)
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if (fcntl(infd, F_SETFL, O_NONBLOCK) != 0) {
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perror(path);
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exit(EXIT_FAILURE);
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}
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#endif
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if (!dispatch_test_check_evfilt_read_for_fd(infd)) {
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test_skip("EVFILT_READ kevent not firing for test file");
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test_fin(NULL);
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}
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dispatch_queue_t main_q = dispatch_get_main_queue();
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test_ptr_notnull("dispatch_get_main_queue", main_q);
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dispatch_source_t reader = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, (uintptr_t)infd, 0, main_q);
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test_ptr_notnull("dispatch_source_create", reader);
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assert(reader);
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dispatch_source_set_event_handler(reader, ^{
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size_t estimated = dispatch_source_get_data(reader);
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fprintf(stderr, "bytes available: %zu\n", estimated);
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test_double_less_than_or_equal("estimated", estimated, bytes_total - bytes_read);
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const ssize_t bufsiz = 1024*500; // 500 KB buffer
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static char buffer[1024*500]; // 500 KB buffer
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ssize_t actual = dispatch_test_fd_read(infd, buffer, sizeof(buffer));
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bytes_read += (size_t)actual;
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printf("bytes read: %zd\n", actual);
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if (actual < bufsiz) {
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actual = dispatch_test_fd_read(infd, buffer, sizeof(buffer));
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bytes_read += (size_t)actual;
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// confirm EOF condition
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test_long("EOF", actual, 0);
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dispatch_source_cancel(reader);
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}
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});
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dispatch_source_set_cancel_handler(reader, ^{
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test_sizet("Bytes read", bytes_read, bytes_total);
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int res = dispatch_test_fd_close(infd);
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test_errno("close", res == -1 ? errno : 0, 0);
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dispatch_release(reader);
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});
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dispatch_set_context(reader, reader);
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dispatch_set_finalizer_f(reader, test_fin);
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dispatch_resume(reader);
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dispatch_main();
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}
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