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Support breakpoints for specific threads #536
Description
Currently it's achievable by setting a breakpoint condition like "(int)thread.gettid() == 5", but debuggers like LLDB support directly specifying thread id(s) for a breakpoint, which is much faster then evaluating the condition expression every time the breakpoint hits:
Syntax: breakpoint modify <cmd-options> [<breakpt-id | breakpt-id-list>]
-t <thread-id> ( --thread-id <thread-id> )
The breakpoint stops only for the thread whose TID matches this argument. The token
'current' resolves to the current thread's ID.
Activity
DrSergei commentedon Jun 3, 2025
I am also interested in this feature. Looks like, we can use
BreakpointModeto identify a thread when setting breakpoint. However, there is a problem, when I try to sendCapabilitiesEventwith newbreakpointModes, the VSCode ignore new values (registerBreakpointModescalled once in initialize request). Does the VSCode team intend to improve the behavior ofCapabilitiesEvent?