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93 lines
2.7 KiB
93 lines
2.7 KiB
4 months ago
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// RUN: %clangxx_tsan %s -o %t -framework Foundation
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// RUN: %deflake %run %t 2>&1 | FileCheck %s
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// UNSUPPORTED: ios
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#import <Foundation/Foundation.h>
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#import <xpc/xpc.h>
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#import <stdatomic.h>
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#import "../test.h"
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long global;
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_Atomic(long) msg_counter;
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_Atomic(long) processed_msgs;
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xpc_connection_t server_conn;
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xpc_connection_t client_conns[2];
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int main(int argc, const char *argv[]) {
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@autoreleasepool {
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fprintf(stderr, "Hello world.\n");
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// CHECK: Hello world.
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barrier_init(&barrier, 2);
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dispatch_queue_t server_q = dispatch_queue_create("server.queue", DISPATCH_QUEUE_CONCURRENT);
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server_conn = xpc_connection_create(NULL, server_q);
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xpc_connection_set_event_handler(server_conn, ^(xpc_object_t client) {
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fprintf(stderr, "server event handler, client = %p\n", client);
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if (client == XPC_ERROR_CONNECTION_INTERRUPTED || client == XPC_ERROR_CONNECTION_INVALID) {
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return;
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}
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xpc_connection_set_event_handler(client, ^(xpc_object_t object) {
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fprintf(stderr, "received message: %p\n", object);
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long msg_number = atomic_fetch_add_explicit(&msg_counter, 1, memory_order_relaxed);
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if (msg_number == 0)
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barrier_wait(&barrier);
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global++;
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK: Write of size 8
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// CHECK: #0 {{.*}}xpc-race.mm:[[@LINE-3]]
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// CHECK: Previous write of size 8
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// CHECK: #0 {{.*}}xpc-race.mm:[[@LINE-5]]
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// CHECK: Location is global 'global'
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if (msg_number == 1)
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barrier_wait(&barrier);
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atomic_fetch_add(&processed_msgs, 1);
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dispatch_sync(dispatch_get_main_queue(), ^{
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if (processed_msgs >= 2) {
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xpc_connection_cancel(client_conns[0]);
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xpc_connection_cancel(client_conns[1]);
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xpc_connection_cancel(server_conn);
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CFRunLoopStop(CFRunLoopGetCurrent());
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}
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});
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});
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xpc_connection_resume(client);
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});
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xpc_connection_resume(server_conn);
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xpc_endpoint_t endpoint = xpc_endpoint_create(server_conn);
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for (int i = 0; i < 2; i++) {
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client_conns[i] = xpc_connection_create_from_endpoint(endpoint);
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xpc_connection_set_event_handler(client_conns[i], ^(xpc_object_t event) {
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fprintf(stderr, "client event handler, event = %p\n", event);
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});
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xpc_object_t msg = xpc_dictionary_create(NULL, NULL, 0);
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xpc_dictionary_set_string(msg, "hello", "world");
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fprintf(stderr, "sending message: %p\n", msg);
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xpc_connection_send_message(client_conns[i], msg);
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xpc_connection_resume(client_conns[i]);
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}
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CFRunLoopRun();
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fprintf(stderr, "Done.\n");
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// CHECK: Done.
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}
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return 0;
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}
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