From ee4512ed481a126dadd33334186e0e759d7f2f47 Mon Sep 17 00:00:00 2001 From: Jeff Hostetler Date: Fri, 22 Feb 2019 14:25:01 -0800 Subject: trace2: create new combined trace facility 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 Signed-off-by: Junio C Hamano --- cache.h | 1 + 1 file changed, 1 insertion(+) (limited to 'cache.h') diff --git a/cache.h b/cache.h index 27fe635f62..c156fa998e 100644 --- a/cache.h +++ b/cache.h @@ -9,6 +9,7 @@ #include "gettext.h" #include "convert.h" #include "trace.h" +#include "trace2.h" #include "string-list.h" #include "pack-revindex.h" #include "hash.h" -- cgit v1.3