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// RUN: %clang_tsan %s -o %t -framework Foundation
// RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %run %t 2>&1 | FileCheck %s
#import <Foundation/Foundation.h>
dispatch_queue_t queue;
dispatch_data_t data;
dispatch_semaphore_t sem;
const char *path;
long my_global = 0;
void test_dispatch_io_write() {
dispatch_io_t channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_CREAT | O_WRONLY, 0666, queue, ^(int error) { });
if (! channel) abort();
dispatch_io_set_high_water(channel, 1);
my_global++;
dispatch_io_write(channel, 0, data, queue, ^(bool done, dispatch_data_t remainingData, int error) {
if (error) abort();
my_global++;
dispatch_async(queue, ^{
my_global++;
if (done) {
dispatch_semaphore_signal(sem);
}
});
});
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
my_global++;
dispatch_io_close(channel, 0);
}
void test_dispatch_write() {
dispatch_fd_t fd = open(path, O_CREAT | O_WRONLY, 0666);
if (fd == -1) abort();
my_global++;
dispatch_write(fd, data, queue, ^(dispatch_data_t data, int error) {
if (error) abort();
my_global++;
dispatch_async(queue, ^{
my_global++;
dispatch_semaphore_signal(sem);
});
});
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
my_global++;
close(fd);
}
void test_dispatch_io_read() {
dispatch_io_t channel = dispatch_io_create_with_path(DISPATCH_IO_STREAM, path, O_RDONLY,
0, queue, ^(int error) { });
dispatch_io_set_high_water(channel, 1);
my_global++;
dispatch_io_read(channel, 0, SIZE_MAX, queue, ^(bool done, dispatch_data_t remainingData, int error) {
if (error) abort();
my_global++;
dispatch_async(queue, ^{
my_global++;
if (done) {
dispatch_semaphore_signal(sem);
}
});
});
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
my_global++;
dispatch_io_close(channel, 0);
}
void test_dispatch_read() {
dispatch_fd_t fd = open(path, O_RDONLY, 0);
if (fd == -1) abort();
my_global++;
dispatch_read(fd, SIZE_MAX, queue, ^(dispatch_data_t data, int error) {
if (error) abort();
my_global++;
dispatch_async(queue, ^{
my_global++;
dispatch_semaphore_signal(sem);
});
});
dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER);
my_global++;
close(fd);
}
int main(int argc, const char *argv[]) {
fprintf(stderr, "Hello world.\n");
queue = dispatch_queue_create("my.queue", DISPATCH_QUEUE_SERIAL);
sem = dispatch_semaphore_create(0);
NSString *ns_path = [NSTemporaryDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"temp-gcd-io.%d", getpid()]];
path = ns_path.fileSystemRepresentation;
NSData *ns_data = [NSMutableData dataWithLength:1000];
data = dispatch_data_create(ns_data.bytes, ns_data.length, NULL, DISPATCH_DATA_DESTRUCTOR_DEFAULT);
test_dispatch_io_write();
test_dispatch_write();
test_dispatch_io_read();
test_dispatch_read();
fprintf(stderr, "Done.\n");
return 0;
}
// CHECK: Hello world.
// CHECK-NOT: WARNING: ThreadSanitizer
// CHECK: Done.
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