diff options
Diffstat (limited to 'dbug')
| -rw-r--r-- | dbug/Makefile.am | 4 | ||||
| -rw-r--r-- | dbug/monty.doc | 13 | ||||
| -rw-r--r-- | dbug/readme.prof | 70 |
3 files changed, 3 insertions, 84 deletions
diff --git a/dbug/Makefile.am b/dbug/Makefile.am index 39e8bb36c71..872ebdb7902 100644 --- a/dbug/Makefile.am +++ b/dbug/Makefile.am @@ -20,8 +20,8 @@ LDADD = libdbug.a ../mysys/libmysys.a ../strings/libmystrings.a pkglib_LIBRARIES = libdbug.a noinst_HEADERS = dbug_long.h libdbug_a_SOURCES = dbug.c sanity.c -EXTRA_DIST = example1.c example2.c example3.c \ - user.r monty.doc readme.prof dbug_add_tags.pl \ +EXTRA_DIST = CMakeLists.txt example1.c example2.c example3.c \ + user.r monty.doc dbug_add_tags.pl \ my_main.c main.c factorial.c dbug_analyze.c \ CMakeLists.txt NROFF_INC = example1.r example2.r example3.r main.r \ diff --git a/dbug/monty.doc b/dbug/monty.doc index bd4096951d2..1af67b81d42 100644 --- a/dbug/monty.doc +++ b/dbug/monty.doc @@ -1,15 +1,3 @@ -Some extra options to DBUG_PUSH: - -O,logfile - As in "o,logfile", but do a close and reopen each time anything - is written to the logfile. This is needed when one expects - the program to crash anywhere, in which case one doesn't - (at least in MSDOS) get a full log-file. - -If one wants a logfile with a ':' in the filename, one can get it by -giving a double ':'. (As in "O,c::\tmp\log") - -DBUG_DUMP("keyword",memory-position,length) writes a hexdump of the -given memory-area to the outputfile. All changes that I or other people at MySQL AB have done to all files in the dbug library (Mainly in dbug.c, dbug_analyze.c, dbug_long.h, @@ -18,3 +6,4 @@ dbug.h) are put in public domain, as the rest of the dbug.c library) To my knowledge, all code in dbug library is in public domain. Michael Widenius + diff --git a/dbug/readme.prof b/dbug/readme.prof deleted file mode 100644 index cfffe376857..00000000000 --- a/dbug/readme.prof +++ /dev/null @@ -1,70 +0,0 @@ -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 |