Home | History | Annotate | Download | only in Darwin 
      1 // RUN: %clang_tsan %s -o %t -framework Foundation
      2 // RUN: %env_tsan_opts=ignore_interceptors_accesses=1 %deflake %run %t 2>&1 | FileCheck %s
      3 
      4 #import <Foundation/Foundation.h>
      5 #import <xpc/xpc.h>
      6 
      7 #import "../test.h"
      8 
      9 long global;
     10 
     11 long received_msgs;
     12 xpc_connection_t server_conn;
     13 xpc_connection_t client_conns[2];
     14 
     15 int main(int argc, const char *argv[]) {
     16   @autoreleasepool {
     17     NSLog(@"Hello world.");
     18     barrier_init(&barrier, 2);
     19 
     20     dispatch_queue_t server_q = dispatch_queue_create("server.queue", DISPATCH_QUEUE_CONCURRENT);
     21 
     22     server_conn = xpc_connection_create(NULL, server_q);
     23 
     24     xpc_connection_set_event_handler(server_conn, ^(xpc_object_t client) {
     25       NSLog(@"server event handler, client = %@", client);
     26 
     27       if (client == XPC_ERROR_CONNECTION_INTERRUPTED || client == XPC_ERROR_CONNECTION_INVALID) {
     28         return;
     29       }
     30       xpc_connection_set_event_handler(client, ^(xpc_object_t object) {
     31         NSLog(@"received message: %@", object);
     32 
     33         barrier_wait(&barrier);
     34         global = 42;
     35 
     36         dispatch_sync(dispatch_get_main_queue(), ^{
     37           received_msgs++;
     38 
     39           if (received_msgs >= 2) {
     40             xpc_connection_cancel(client_conns[0]);
     41             xpc_connection_cancel(client_conns[1]);
     42             xpc_connection_cancel(server_conn);
     43             CFRunLoopStop(CFRunLoopGetCurrent());
     44           }
     45         });
     46       });
     47 
     48       xpc_connection_resume(client);
     49     });
     50     xpc_connection_resume(server_conn);
     51     xpc_endpoint_t endpoint = xpc_endpoint_create(server_conn);
     52 
     53     for (int i = 0; i < 2; i++) {
     54       client_conns[i] = xpc_connection_create_from_endpoint(endpoint);
     55       xpc_connection_set_event_handler(client_conns[i], ^(xpc_object_t event) {
     56         NSLog(@"client event handler, event = %@", event);
     57       });
     58 
     59       xpc_object_t msg = xpc_dictionary_create(NULL, NULL, 0);
     60       xpc_dictionary_set_string(msg, "hello", "world");
     61       NSLog(@"sending message: %@", msg);
     62 
     63       xpc_connection_send_message(client_conns[i], msg);
     64       xpc_connection_resume(client_conns[i]);
     65     }
     66 
     67     CFRunLoopRun();
     68 
     69     NSLog(@"Done.");
     70   }
     71   return 0;
     72 }
     73 
     74 // CHECK: Hello world.
     75 // CHECK: WARNING: ThreadSanitizer: data race
     76 // CHECK:   Write of size 8
     77 // CHECK:     #0 {{.*}}xpc-race.mm:34
     78 // CHECK:   Previous write of size 8
     79 // CHECK:     #0 {{.*}}xpc-race.mm:34
     80 // CHECK: Location is global 'global'
     81 // CHECK: Done.
     82