Breakpoints within MAXBLOCK

[Brendan Duddridge]

Hi,

My breakpoints don't seem to stop inside of a MAPBLOCK on iOS in Xcode 7.

Is there a trick to getting them to work with Couchbase?

Thanks,

Brendan

[Jens Alfke]

> On Jun 16, 2016, at 11:02 AM, Brendan Duddridge <bren...@gmail.com> wrote:
>
> Hi,
>
> My breakpoints don't seem to stop inside of a MAPBLOCK on iOS in Xcode 7.

In my experience, Xcode (LLDB) has trouble hitting breakpoints inside of blocks. It doesn’t consistently fail, but it’s not reliable.

This isn't specific to the mapBlock, or to Couchbase Lite. I don’t know of any workarounds, sorry.

—Jens

[Brendan Duddridge]

That's a bummer. Makes it difficult to debug view creation. I currently am somewhere trying to treat an NSString as an NSDictionary and it's crashing. So I'm trying to figure that out. My MAPBLOCK is quite complex. 

[Jens Alfke]

On Jun 16, 2016, at 11:22 AM, Brendan Duddridge <bren...@gmail.com> wrote:

That's a bummer. Makes it difficult to debug view creation. I currently am somewhere trying to treat an NSString as an NSDictionary and it's crashing. So I'm trying to figure that out. My MAPBLOCK is quite complex. 

One weird trick I know of, that I haven’t used myself, is that you can simulate a breakpoint in code with the following:

    pthread_kill(pthread_self(), SIGINT);

I.e. insert that where you want to stop, and the debugger should stop at that line and then allow you to continue.

From my notes it looks like you’ll need to include these headers:

#include <sys/sysctl.h>

#include <unistd.h>

#include <pthread.h>

—Jens

[Brendan Duddridge]

I just found a workaround actually.

If I take the code that's within the MAPBLOCK and put it into a separate method and call it within the MAPBLOCK, then I can put breakpoints in that method and it works.

I didn't know about that simulating breakpoints thing, but that's cool too.

Thanks!

Brendan