New submission from John Ehresman <j...@wingware.com>: I'm interested in adding support for debugger watchpoint's in the core. A watchpoint would cause the debugger to stop when a value in a namespace changes. This hook would be called when PyDict_SetItem & PyDict_DelItem is invoked. I realize that this does not cover function local variables, but I'm more interested in instance attributes and globals.
This is a proof of concept patch; I wanted to see if it would work and get some initial feedback. I think the performance implications are minimal in the case where nothing is watched, though the performance of sample callback in _debuggerhooks can be improved. An issue may be if this is used outside a debugger implementation to implement an observer pattern -- I'd like to discourage it, but worry that it will be used since it's there, rather like how the settrace tracer gets used. If there's interest in this, I will clean this up and add watchpoints to pdb. ---------- components: Interpreter Core files: dicthook.diff keywords: patch messages: 85051 nosy: jpe severity: normal status: open title: Add C hook in PyDict_SetItem for debuggers versions: Python 2.7 Added file: http://bugs.python.org/file13549/dicthook.diff _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue5654> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
