Cherrypick commits to synchronize the debugger output and error stream #10368
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Remove Debugger::GetOutputStream and Debugger::GetErrorStream in preparation for replacing both with a new variant that needs to be locked and hence can't be handed out like we do right now. The patch replaces most uses with GetAsyncOutputStream and GetAsyncErrorStream respectively. There methods return new StreamSP objects that automatically get flushed on destruction. See llvm#126630 for more details. (cherry picked from commit eff3c34)
Similar to llvm#126821, in support of llvm#126630. (cherry picked from commit ed32d85)
- Remove _ap (auto_ptr) suffix with _up (unique_ptr) suffix - Move forward declaration from IOHandler.h to IOHandlerCursesGUI.h - Move curses namespace under lldb_private Motivated by Alex' comment in llvm#126630. (cherry picked from commit 776fa2d)
A handful of minor improvements to StreamAsynchronousIO: - Document the class. - Use a named enum value to distinguishing between stdout and stderr. - Add missing period to comment. - Clear the string instead of assigning to it. - Eliminate color argument. (cherry picked from commit 70e693c)
Implement ansi::StripAnsiTerminalCodes and fix a long standing bug where using format strings in lldb's prompt resulted in an incorrect prompt column width. (cherry picked from commit 2841cdb)
This patch improves the synchronization of the debugger's output and error streams using two new abstractions: `LockableStreamFile` and `LockedStreamFile`. - `LockableStreamFile` is a wrapper around a `StreamFile` and a mutex. Client cannot use the `StreamFile` without calling `Lock`, which returns a `LockedStreamFile`. - `LockedStreamFile` is an RAII object that locks the stream for the duration of its existence. As long as you hold on to the returned object you are permitted to write to the stream. The destruction of the object automatically flush the output stream. (cherry picked from commit 58279d1)
Make StreamAsynchronousIO an unique_ptr instead of a shared_ptr. I tried passing the class by value, but the llvm::raw_ostream forwarder stored in the Stream parent class isn't movable and I don't think it's worth changing that. Additionally, there's a few places that expect a StreamSP, which are easily created from a StreamUP. (cherry picked from commit 78d82d3)
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adrian-prantl
approved these changes
Mar 27, 2025
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