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Visual Studio supports conditional and printing breakpoints for both C and C++. I tend to use them rarely because they really hurt performance, though. I only u
by fluoridation 4y ago
Visual Studio supports conditional and printing breakpoints for both C and C++. I tend to use them rarely because they really hurt performance, though. I only use them if I need to be able to turn them on and off at will, which hardcoded __debugbreak()s don't allow, obviously.
- mark_undoio 4y agoI helped implement fast conditional breakpoints in UDB (time travel debugger for Linux) - https://www.youtube.com/watch?v=gcHcGeeJHSA https://www.youtube.com/watch?v=gcHcGeeJHSA We used GDB's conditional breakpoint bytecode https://sourceware.org/gdb/onlinedocs/gdb/General-Bytecode-Design.html https://sourceware.org/gdb/onlinedocs/gdb/General-Bytecode-D... to get a speedup in the thousands of times vs plain conditional breakpoints. That works for us because we've got in-process agent code that can evaluate the breakpoint condition without trapping. It should be possible to do this in other debuggers with a bit of work, though we have the advantage of in-process virtualisation to help hide this computation from the process.