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