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/*
* Copyright (c) 2010-2011 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 <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
#include <unistd.h>
#endif
#include <sys/stat.h>
#include <dispatch/dispatch.h>
#include "dispatch_test.h"
#include <bsdtests.h>
static ssize_t actual;
void stage1(int stage);
void stage2(void);
void finish(void* cxt);
void
stage1(int stage)
{
#if defined(_WIN32)
char *path = dispatch_test_get_large_file();
dispatch_fd_t fd = dispatch_test_fd_open(path, O_RDONLY);
if (fd == -1)
{
perror(path);
exit(EXIT_FAILURE);
}
dispatch_test_release_large_file(path);
free(path);
#else
const char *path = "/dev/random";
int fd = open(path, O_RDONLY);
if (fd == -1)
{
perror(path);
exit(EXIT_FAILURE);
}
#endif
dispatch_queue_t main_q = dispatch_get_main_queue();
test_ptr_notnull("main_q", main_q);
dispatch_source_t source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, (uintptr_t)fd, 0, main_q);
test_ptr_notnull("select source", source);
dispatch_source_set_event_handler(source, ^{
size_t buffer_size = 500*1024;
char buffer[500*1024];
ssize_t sz = dispatch_test_fd_read(fd, buffer, buffer_size);
test_sizet_less_than_or_equal("kevent read 1", sz, buffer_size+1);
dispatch_source_cancel(source);
});
dispatch_source_set_cancel_handler(source, ^{
int res = dispatch_test_fd_close(fd);
test_errno("close", res == -1 ? errno : 0, 0);
dispatch_release(source);
if (stage == 1)
{
dispatch_async(dispatch_get_main_queue(), ^{
stage2();
});
}
});
if (stage == 3)
{
dispatch_set_context(source, source);
dispatch_set_finalizer_f(source, finish);
}
dispatch_resume(source);
}
void
stage2(void)
{
char *path = dispatch_test_get_large_file();
dispatch_fd_t fd = dispatch_test_fd_open(path, O_RDONLY);
if (fd == -1)
{
perror(path);
exit(EXIT_FAILURE);
}
dispatch_test_release_large_file(path);
free(path);
if (!dispatch_test_check_evfilt_read_for_fd(fd)) {
test_skip("EVFILT_READ kevent not firing for test file");
dispatch_test_fd_close(fd);
dispatch_async(dispatch_get_main_queue(), ^{
stage1(3);
});
return;
}
ssize_t expected = dispatch_test_fd_lseek(fd, 0, SEEK_END);
dispatch_test_fd_lseek(fd, 0, SEEK_SET);
actual = 0;
dispatch_queue_t main_q = dispatch_get_main_queue();
test_ptr_notnull("main_q", main_q);
dispatch_source_t source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, (uintptr_t)fd, 0, main_q);
test_ptr_notnull("kevent source", source);
dispatch_source_set_event_handler(source, ^{
size_t est = dispatch_source_get_data(source);
test_sizet_less_than_or_equal("estimated", est, expected - actual);
char buffer[500*1024];
ssize_t sz = dispatch_test_fd_read(fd, buffer, sizeof(buffer));
actual += sz;
if (sz < (ssize_t)sizeof(buffer))
{
sz = dispatch_test_fd_read(fd, buffer, sizeof(buffer));
actual += sz;
test_long("EOF", sz, 0);
dispatch_source_cancel(source);
}
});
dispatch_source_set_cancel_handler(source, ^{
test_long("bytes read", actual, expected);
int res = dispatch_test_fd_close(fd);
test_errno("close", res == -1 ? errno : 0, 0);
dispatch_release(source);
dispatch_async(dispatch_get_main_queue(), ^{
stage1(3);
});
});
dispatch_resume(source);
}
void
finish(void* cxt)
{
test_ptr("finish", cxt, cxt);
test_stop();
}
int
main(void)
{
dispatch_test_start("Dispatch select workaround test"); // <rdar://problem/7678012>
dispatch_async(dispatch_get_main_queue(), ^{
stage1(1);
});
dispatch_main();
}
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