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authorJeff Hostetler <jeffhost@microsoft.com>2019-02-22 22:25:01 (GMT)
committerJunio C Hamano <gitster@pobox.com>2019-02-22 23:27:59 (GMT)
commitee4512ed481a126dadd33334186e0e759d7f2f47 (patch)
tree4bc0418115d44b1833c1d24d2ac1c92f067b7ad3 /repository.h
parente544221d97a57a9be7ba18a0df52a15b4cc76f97 (diff)
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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 <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'repository.h')
-rw-r--r--repository.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/repository.h b/repository.h
index 8981649..4fb6a58 100644
--- a/repository.h
+++ b/repository.h
@@ -92,6 +92,9 @@ struct repository {
/* Repository's current hash algorithm, as serialized on disk. */
const struct git_hash_algo *hash_algo;
+ /* A unique-id for tracing purposes. */
+ int trace2_repo_id;
+
/* Configurations */
/* Indicate if a repository has a different 'commondir' from 'gitdir' */