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1// RUN: %clangxx_tsan %s -o %t -framework Foundation2// RUN: %deflake %run %t 2>&1 | FileCheck %s3 4// UNSUPPORTED: ios5 6#import <Foundation/Foundation.h>7#import <xpc/xpc.h>8#import <stdatomic.h>9 10#import "../test.h"11 12long global;13 14_Atomic(long) msg_counter;15_Atomic(long) processed_msgs;16xpc_connection_t server_conn;17xpc_connection_t client_conns[2];18 19int main(int argc, const char *argv[]) {20 @autoreleasepool {21 fprintf(stderr, "Hello world.\n");22 // CHECK: Hello world.23 24 barrier_init(&barrier, 2);25 26 dispatch_queue_t server_q = dispatch_queue_create("server.queue", DISPATCH_QUEUE_CONCURRENT);27 28 server_conn = xpc_connection_create(NULL, server_q);29 30 xpc_connection_set_event_handler(server_conn, ^(xpc_object_t client) {31 fprintf(stderr, "server event handler, client = %p\n", client);32 33 if (client == XPC_ERROR_CONNECTION_INTERRUPTED || client == XPC_ERROR_CONNECTION_INVALID) {34 return;35 }36 xpc_connection_set_event_handler(client, ^(xpc_object_t object) {37 fprintf(stderr, "received message: %p\n", object);38 39 long msg_number = atomic_fetch_add_explicit(&msg_counter, 1, memory_order_relaxed);40 41 if (msg_number == 0)42 barrier_wait(&barrier);43 44 global++;45 // CHECK: WARNING: ThreadSanitizer: data race46 // CHECK: Write of size 847 // CHECK: #0 {{.*}}xpc-race.mm:[[@LINE-3]]48 // CHECK: Previous write of size 849 // CHECK: #0 {{.*}}xpc-race.mm:[[@LINE-5]]50 // CHECK: Location is global 'global'51 52 if (msg_number == 1)53 barrier_wait(&barrier);54 55 atomic_fetch_add(&processed_msgs, 1);56 57 dispatch_sync(dispatch_get_main_queue(), ^{58 if (processed_msgs >= 2) {59 xpc_connection_cancel(client_conns[0]);60 xpc_connection_cancel(client_conns[1]);61 xpc_connection_cancel(server_conn);62 CFRunLoopStop(CFRunLoopGetCurrent());63 }64 });65 });66 67 xpc_connection_resume(client);68 });69 xpc_connection_resume(server_conn);70 xpc_endpoint_t endpoint = xpc_endpoint_create(server_conn);71 72 for (int i = 0; i < 2; i++) {73 client_conns[i] = xpc_connection_create_from_endpoint(endpoint);74 xpc_connection_set_event_handler(client_conns[i], ^(xpc_object_t event) {75 fprintf(stderr, "client event handler, event = %p\n", event);76 });77 78 xpc_object_t msg = xpc_dictionary_create(NULL, NULL, 0);79 xpc_dictionary_set_string(msg, "hello", "world");80 fprintf(stderr, "sending message: %p\n", msg);81 82 xpc_connection_send_message(client_conns[i], msg);83 xpc_connection_resume(client_conns[i]);84 }85 86 CFRunLoopRun();87 88 fprintf(stderr, "Done.\n");89 // CHECK: Done.90 }91 return 0;92}93