From: "Steven Rostedt (Google)" <rostedt@xxxxxxxxxxx>
This patch set is based on top of:
https://lore.kernel.org/all/20230809175340.3066-1-stevie.6strings@xxxxxxxxx/
I added a sample program task-eval which is one of the tools that will be
using this library. The first patch adds task-eval but that is still using
the old API (defined in trace-analysis.c).
The next patches modify the new API to fit with the use case of task-eval.
One is to use "pointer" as I'm not sure exactly the usecase of the dynamic
structure.
The cmp and release callbacks are changed to be more generic, and they get
called if they simply exist for a given type. I can imagine wanting a
release function for event the most mundane types (like number_32).
The cmp was also updated to pass in the traceeval descriptor, as I found
that I needed access to it while doing a compare (although, I rewrote the
code a bit where that use case isn't in the tool anymore).
Some fixes were made to the query.
I also did a bit of code restructuring and add the hash and iterator logic.
The last patch updates the sample code task-eval.c and has it give pretty
much the same logic as the original.
That sample could be updated to implement the code consolidation that Ross
suggested. I may do that later.
Happy programming!
Changes since v1: https://lore.kernel.org/all/20230809031313.1298605-1-rostedt@xxxxxxxxxxx/
- Lots!
- Converted to using a hash table
- Removed the unused compare code. With the other updates, it was
taking too much time to keep updating them.
- Added checks and labels to the types to have them know what type
they are, and index they are at.
- Added stat logic
- Added iterator logic
- Have a working sample with the new code!
Steven Rostedt (Google) (17):
libtraceeval histograms: Fix traceeval_results_release() error message
libtraceeval: Add sample task-eval program
libtraceeval hist: Add pointer and const string types
libtraceeval histogram: Have cmp and release functions be generic
libtraceeval histograms: Add traceeval struct to compare function
libtraceeval histogram: Remove comparing of traceeval and types
libtraceeval: Convert hist array into a hash table
libtraceeval histograms: Move hash functions into their own file
libtraceeval histogram: Label and check keys and values
libtraceeval histogram: Add updating of stats
libtraceeval histogram: Add iterator APIs
libtraceeval histogram: Add data copy callback
libtraceeval histogram: Do the release on updates
libtraceeval histogram: Use stack for old copy in update
libtraceeval histogram: Add traceeval_iterator_sort_custom()
libtraceeval histogram: Have traceeval_query() just give the pointer
to results
libtraceeval samples: Update task-eval to use the histogram logic
Makefile | 4 +-
include/traceeval-hist.h | 110 +++--
include/traceeval-test.h | 16 -
samples/Makefile | 29 ++
samples/task-eval.c | 952 +++++++++++++++++++++++++++++++++++++++
src/Makefile | 1 +
src/eval-local.h | 123 +++++
src/hash.c | 123 +++++
src/histograms.c | 878 ++++++++++++++++++++++++++----------
9 files changed, 1952 insertions(+), 284 deletions(-)
delete mode 100644 include/traceeval-test.h
create mode 100644 samples/Makefile
create mode 100644 samples/task-eval.c
create mode 100644 src/eval-local.h
create mode 100644 src/hash.c
--
2.40.1
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