XCode / Objective C 基于调用者的条件断点
好的，我需要设置一个断点，只有当特定对象和/或选择器调用（或不）方法时才会“命中”，
我能想到的最简单的方法是如果有一些编译器宏（如 _cmd）展开堆栈并返回当前方法的直接调用者的 id 和选择器。
例如，假设 majical 宏是 _cmd_caller_id & _cmd_caller_sel) -
if ( (_cmd_caller_id == self) && (_cmd_caller_sel != @selector(some_method:signature:) ) {
NSLog(@"called by %@ - hitting breakpoint",NSStringFromSelector(_cmd_caller_sel));
}
（您可以在包含 NSLog(...); 的行上放置一个断点）；
原因是我有一个被多次调用的方法，我需要能够设置比上面描述的更复杂的条件集，以设置陷阱来确定哪个方法正在调用违规方法以及何时调用。
Ok, i have a requirement to set a breakpoint that only gets "hit" when a method is (or is not) called by a specific object and/or selector
the easiest way i can think of doing that is if there were some compiler macro (like _cmd) that unwinds the stack and returns the id and selector of the immediate caller of the current method.
eg assuming the majical macros were _cmd_caller_id & _cmd_caller_sel) -
if ( (_cmd_caller_id == self) && (_cmd_caller_sel != @selector(some_method:signature:) ) {
NSLog(@"called by %@ - hitting breakpoint",NSStringFromSelector(_cmd_caller_sel));
}
(and you would put a break point on the line containing the NSLog(...); );
the reason being i have a method that is called many times, an i need to be able to set up a more complex set of conditions than i have described above to set a trap to determine what method is calling the offending method and when.
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在调用站点设置断点，并在断点上设置条件（例如 self == another）
Set your breakpoint at the calling site, with a condition on the breakpoint (e.g. self == whatever)