...slowly turning into a full-fledged trace overhaul...
When working on the documentation, I discovered GIT_TRACE_PACK_ACCESS,
which uses a completely separate trace implementation that is 3 times
faster by keeping the file open...so this round includes a performance
patch that brings the trace API up to speed.
Changes since v6:
[04-06]: New.
[07-08]: Separated the 'disable for test' aspect into a separate patch.
GIT_TRACE_BARE=1 is set in test-lib.sh rather than individual
tests. Moved static trace_bare variable from global scope into
prepare_trace_line().
[09]: Cast timeval.tv_usec to long to prevent compiler warning.
[11,13]: Factor out '#define TRACE_CONTEXT __FILE__' so that it can
be easily changed to __FUNCTION__.
[14]: Added GIT_TRACE_PERFORMANCE to Documentation/git.txt
[15-16]: New.
[01-03,10,12] are unchanged save resolving conflicts.
Karsten Blees (16):
trace: move trace declarations from cache.h to new trace.h
trace: consistently name the format parameter
trace: remove redundant printf format attribute
trace: improve trace performance
Documentation/git.txt: improve documentation of 'GIT_TRACE*' variables
sha1_file: change GIT_TRACE_PACK_ACCESS logging to use trace API
trace: add infrastructure to augment trace output with additional info
trace: disable additional trace output for unit tests
trace: add current timestamp to all trace output
trace: move code around, in preparation to file:line output
trace: add 'file:line' to all trace output
trace: add high resolution timer function to debug performance issues
trace: add trace_performance facility to debug performance issues
git: add performance tracing for git's main() function to debug
scripts
wt-status: simplify performance measurement by using getnanotime()
progress: simplify performance measurement by using getnanotime()
Documentation/git.txt | 59 +++++---
Makefile | 7 +
builtin/receive-pack.c | 2 +-
cache.h | 13 +-
commit.h | 1 +
config.mak.uname | 1 +
git-compat-util.h | 4 +
git.c | 2 +
pkt-line.c | 8 +-
progress.c | 71 +++++-----
sha1_file.c | 30 +---
shallow.c | 10 +-
t/test-lib.sh | 4 +
trace.c | 369 ++++++++++++++++++++++++++++++++++++++++---------
trace.h | 105 ++++++++++++++
wt-status.c | 14 +-
16 files changed, 524 insertions(+), 176 deletions(-)
create mode 100644 trace.h
--
2.0.0.406.ge74f8ff
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