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charset2html moved from mysys to extra ignore: new files added, garbage removed extra/charset2html.c: Rename: mysys/charset2html.c -> extra/charset2html.c configure.in: remove historical difference between test_thr_alarm, test_thr_lock and six newer mysys/test_* programs build dbug after mysys dbug/Makefile.am: build utils and examples, build manual dbug/dbug.c: cleanup DBUG_EXECUTE_IF macro dbug/dbug_analyze.c: fix it to run dbug/dbug_long.h: warning added dbug/main.c: fix it to run dbug/user.r: formating cleanup all undocumented features documented extra/Makefile.am: charset2html moved from mysys include/my_dbug.h: DBUG_EXECUTE_IF() macro mysys/Makefile.am: charset2html moved to extra BitKeeper/etc/ignore: new files added, garbage removed |
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.cvsignore | ||
dbug.c | ||
dbug_add_tags.pl | ||
dbug_analyze.c | ||
dbug_long.h | ||
doinstall.sh | ||
example1.c | ||
example2.c | ||
example3.c | ||
factorial.c | ||
install.sh | ||
main.c | ||
Makefile.am | ||
mklintlib.sh | ||
monty.doc | ||
qmake.cmd | ||
readme.prof | ||
sanity.c | ||
user.r | ||
vargs.h |
Hi, I'm sending you the modifications I made to your Dbug routines to allow profiling in a (relatively) machine independent fashion. I use your Dbug routines fairly extensively. Unfortunately, it's a royal pain to have to keep profiled versions of various libraries around. The modifications allow profiling without the need for this. How it works. ------------ Basically, I just added code in the dbug routines to write out a file called dbugmon.out (by default). This is an ascii file containing lines of the form: <function-name> E <time-entered> <function-name> X <time-exited> A second program (analyze) reads this file, and produces a report on standard output. Profiling is enabled through the `g' flag. It can take a list of procedure names for which profiling is enabled. By default, it profiles all procedures. The code in ``dbug.c'' opens the profile file for appending. This is in order that one can run a program several times, and get the sum total of all the times, etc. The only system dependent part that I'm aware of is the routine Clock() at the end of dbug.c. This returns the elapsed user time in milliseconds. The version which I have is for 4.3 BSD. As I don't have access to other systems, I'm not certain how this would change. An example of the report generated follows: Profile of Execution Execution times are in milliseconds Calls Time ----- ---- Times Percentage Time Spent Percentage Function Called of total in Function of total Importance ======== ====== ========== =========== ========== ========== factorial 5 83.33 30 100.00 8333 main 1 16.67 0 0.00 0 ======== ====== ========== =========== ========== Totals 6 100.00 30 100.00 As you can see, it's quite self-evident. The ``Importance'' column is a metric obtained by multiplying the percentage of the calls and the percentage of the time. Functions with higher 'importance' benefit the most from being sped up. I'm really not certain how to add support for setjmp/longjmp, or for child processes, so I've ignored that for the time being. In most of the code that I write, it isn't necessary. If you have any good ideas, feel free to add them. This has been very useful to me. If you can use it as part of your dbug distribution, please feel free to do so. Regards, Binayak Banerjee {allegra | astrovax | bpa | burdvax}!sjuvax!bbanerje bbanerje%sjuvax.sju.edu@relay.cs.net July 9, 1987