Question

当我返回CFDataRef时。页: 1

(CFDataRef)MyFunction{
    .....
    CFDataRef data = CFDataCreate(NULL, buf, bufLen);
    free(buf);
    return data;
}

There is a memory leak, how to make CFDataRef autorelease? the method [data autorelease] doesn t exit.

Answer 1

你们可以自行释放核心基金会的目标。 (然而,你可以自动释放支持免费桥梁的核心基金会物体,如CFDataRef;见下文@newacct的答复)。)

目标C公约将指明您的方法,从<代码>新开始,以表明打电话者负责发放其返回价值。例如:

+ (CFDataRef)newDataRef {
    return CFDataCreate(...);
}

CFDataRef myDataRef = [self newDataRef];
...
CFRelease(myDataRef);

如果你遵守这一命名公约,Xcode的静态分析器将正确地标明核心基金会的记忆问题。

Answer 2

how to make CFDataRef autorelease? the method [data autorelease] doesn t exit.

简单地把它放在一个目标点上,以便打电话autorelease:

-(CFDataRef)MyFunction{
    .....
    CFDataRef data = CFDataCreate(NULL, buf, bufLen);
    free(buf);
    return (CFDataRef)[(id)data autorelease];
}

友情链接