Only one daemon can write to a given output directory at a time. The
lock holds the daemon PID and is removed on a clean exit; a lock whose
owner is verifiably gone is taken over on the next start, and a lock
whose owner cannot be read or that reads as alive must be removed by
hand.
The old pre-flight truncated the output at startup with -f, so an
interrupted capture lost the trace, and the probe fopen followed a
symlink. The existing file is now moved to FILE~ for the duration of
the capture and restored if the trace cannot be written.
HasData() flips when the connection is established, but the rate
list is only filled by the worker periodic stats update, whose first
entry arrives ~200ms later, so the first render could read an empty
list.
Use '<pid>_<ip>_<port>' string as client ID instead of IP+port hash.
This allows:
- Same program restarting (new PID) to be recognized as new client
- Multiple instances of same program (different PIDs) to capture separately
A discovery-and-capture daemon that listens for UDP broadcasts from
Tracy clients, automatically connects to discovered clients, and
captures each to a separate file.
Features:
- Continuous discovery until Ctrl+C
- Per-client capture threads
- Terminal display with per-client stats
- Output files named: <program>_<ip>_<port>.tracy
- Collision handling with _1, _2 suffix
- Graceful shutdown on signal
Based on the multicapture design by Grégoire Roussel, but simplified
to output separate files instead of merging (use tracy-merge for that).
Co-authored-by: Grégoire Roussel <gregoire.roussel@wandercraft.eu>
Extract common output functions from capture.cpp into a proper library:
- InitTerminalDetection()/IsTerminal() - terminal detection
- AnsiPrintf() - printf with ANSI escape codes
- WaitForConnection() - blocks until connected, returns error code
- PrintCaptureProgress() - prints throughput/memory/time stats
- PrintWorkerFailure() - prints failure details with callstack
Functions are declared in CaptureOutput.hpp and implemented in
CaptureOutput.cpp. Both tracy-capture and future tools can share
this code.
Co-authored-by: Grégoire Roussel <gregoire.roussel@wandercraft.eu>
This value is not used for anything, it was just a number displayed in
the UI without much meaning to anyone.
Operations on the queue during early init may not work correctly, stopping
some programs from running past the calibration loop.
PPQSort is supposedly quite fast: https://github.com/GabTux/PPQSort
More importantly, it does not depend on TBB fuckery, so there's no longer
a need to link with an external library that people may or may not have.
The NO_PARALLEL_STL option is out, as it was provided solely to deal with
TBB being not available. Sequential sorting is still used on emscripten.
From the project() CMake documentation:
> If enabling ASM, list it last so that CMake can check whether compilers for other languages like C work for assembly too.
Tracy worker resets the IsConnected to false when finishing the
capture. If it finishes too quick, the waiting loop in capture.cpp
might never see IsConnected = true.
