我试图在我的应用程序中跨两个进程销售一个对象。但是,当我测试我的代码时,接收出售对象的进程就会阻塞。我或多或少都遵循http://www.mikeash.com/pyblog/friday-qa-2009-02-20-the-good-and-bad-of-distributed-objects.html上的示例代码。
以下是我的两个流程的代码:
/*
* Description: Vends an object that the receiver can then access
* through the distributed object.
*/
#import <Cocoa/Cocoa.h>
#import <iostream>
using namespace std;
int main() {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
cout << "Starting vendor " << endl;
NSMutableArray *mutable_array;
[mutable_array addObject:@"Louis Lang"];
[mutable_array addObject:@"John Doe"];
NSConnection *connection = [NSConnection connectionWithReceivePort:[NSPort port] sendPort:nil];
[connection setRootObject:mutable_array];
[connection registerName:@"com.example.whatever"];
[[NSRunLoop currentRunLoop] run];
[pool drain];
return 0;
}
和“接收者”
/*
* Description: Receives the vended object from the server
*
*/
#import <Cocoa/Cocoa.h>
#import <iostream>
using namespace std;
int main() {
NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
cout << "Starting receiver." << endl;
id theObject = (id)[NSConnection rootProxyForConnectionWithRegisteredName:@"com.example.whatever" host:nil];
int the_count = [theObject count];
NSLog(@"There are %i items in mutable_array", the_count);
[pool drain];
return 0;
}
答案 0 :(得分:2)
对于大多数代码来说,您的代码似乎没问题,分布式对象至少是一部分。但是:
NSMutableArray* mutable_array = [[NSMutableArray alloc] init];
[mutable_array addObject:@"Louis Lang"];
[mutable_array addObject:@"John Doe"];
我认为,肯定会有所帮助。
如果您使用的是Xcode 4.4+,也可以这样做:
NSArray* array = @[ @"Louis Lang", @"John Doe" ];