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ee4512ed48
Create a new unified tracing facility for git. The eventual intent is to replace the current trace_printf* and trace_performance* routines with a unified set of git_trace2* routines. In addition to the usual printf-style API, trace2 provides higer-level event verbs with fixed-fields allowing structured data to be written. This makes post-processing and analysis easier for external tools. Trace2 defines 3 output targets. These are set using the environment variables "GIT_TR2", "GIT_TR2_PERF", and "GIT_TR2_EVENT". These may be set to "1" or to an absolute pathname (just like the current GIT_TRACE). * GIT_TR2 is intended to be a replacement for GIT_TRACE and logs command summary data. * GIT_TR2_PERF is intended as a replacement for GIT_TRACE_PERFORMANCE. It extends the output with columns for the command process, thread, repo, absolute and relative elapsed times. It reports events for child process start/stop, thread start/stop, and per-thread function nesting. * GIT_TR2_EVENT is a new structured format. It writes event data as a series of JSON records. Calls to trace2 functions log to any of the 3 output targets enabled without the need to call different trace_printf* or trace_performance* routines. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
25 lines
660 B
C
25 lines
660 B
C
#ifndef TR2_CMD_NAME_H
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#define TR2_CMD_NAME_H
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/*
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* Append the current command name to the list being maintained
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* in the environment.
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*
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* The hierarchy for a top-level git command is just the current
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* command name. For a child git process, the hierarchy includes the
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* names of the parent processes.
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*
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* The hierarchy for the current process will be exported to the
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* environment and inherited by child processes.
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*/
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void tr2_cmd_name_append_hierarchy(const char *name);
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/*
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* Get the command name hierarchy for the current process.
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*/
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const char *tr2_cmd_name_get_hierarchy(void);
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void tr2_cmd_name_release(void);
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#endif /* TR2_CMD_NAME_H */
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