Re: [PATCH] change output of htags --statistics

[Hideki IWAMOTO]

Hi.

> #elif HAVE_TIMES

I don't know whether support of times(2) is needed.
Is there anybody who is using the system that supports times
and doesn't support gettimeofday and getrusage?


On Mon, 02 Nov 2009 10:53:35 +0900, Hideki IWAMOTO wrote...
> Hi.
> 
> Currently, `htags --statistics' outputs elapsed times with the accuracy of 
> second.
> It is preferable that the CPU time is output and the elapsed time is output 
> by higher accuracy.
> 
> This patch changes `htags --statistics' as follows. 
> 
> #if HAVE_GETRUSAGE && HAVE_GETTIMEOFDAY
>      Use gettimeofday() to get elapsed time.
>      Use getrusage() to get CPU time.
> #elif HAVE_TIMES
>   #if HAVE_GETTIMEOFDAY
>      Use gettimeofday() to get elapsed time.
>      Use times() to get CPU time.
>   #else
>      Use times() to get elapsed time and CPU time.
>   #endif
> #else
>   #if HAVE_GETTIMEOFDAY
>      Use gettimeofday() to get elapsed time.
>   #else
>      Use time() to get elapsed time.
>   #endif
> #endif
> 
> 
> The output in each case is as follows. 
> 
> ======== Case 1 =============================================================
> #define HAVE_GETRUSAGE 1
> #define HAVE_GETTIMEOFDAY 1
> 
> $ htags --statistics
> period                            user[sec] system[sec] elapsed[sec]  %CPU
> --------------------------------- --------- ----------- ------------ -----
> Time of making duplicate entries      1.988       0.184        1.420 153.0
> Time of making function index         0.272       0.036        0.281 109.7
> Time of making file index             0.028       0.012        0.042  96.3
> Time of making include file index     1.120       0.092        1.216  99.7
> Time of making hypertext             18.701       1.888       15.474 133.1
> The entire time                      22.113       2.220       18.440 132.0
> 
> ======== Case 2 =============================================================
> #undef HAVE_GETRUSAGE
> #define HAVE_GETTIMEOFDAY 1
> #define HAVE_TIMES 1
> 
> $ htags --statistics
> period                            user[sec] system[sec] elapsed[sec]  %CPU
> --------------------------------- --------- ----------- ------------ -----
> Time of making duplicate entries      1.970       0.170        1.527 140.1
> Time of making function index         0.290       0.020        0.278 111.6
> Time of making file index             0.030       0.010        0.041  97.8
> Time of making include file index     1.110       0.080        1.201  99.1
> Time of making hypertext             18.060       1.980       15.221 131.7
> The entire time                      21.460       2.260       18.276 129.8
> 
> ======== Case 3 =============================================================
> #undef HAVE_GETRUSAGE
> #undef HAVE_GETTIMEOFDAY
> #define HAVE_TIMES 1
> 
> $ htags --statistics
> period                            user[sec] system[sec] elapsed[sec]  %CPU
> --------------------------------- --------- ----------- ------------ -----
> Time of making duplicate entries      2.020       0.190        1.550 142.6
> Time of making function index         0.260       0.040        0.280 107.1
> Time of making file index             0.020       0.030        0.040 125.0
> Time of making include file index     1.070       0.110        1.170 100.9
> Time of making hypertext             18.580       2.190       15.310 135.7
> The entire time                      21.950       2.560       18.360 133.5
> 
> ======== Case 4 =============================================================
> #undef HAVE_GETRUSAGE
> #define HAVE_GETTIMEOFDAY 1
> #undef HAVE_TIMES
> 
> $ htags --statistics
> period                            elapsed[sec]
> --------------------------------- ------------
> Time of making duplicate entries         1.405
> Time of making function index            0.294
> Time of making file index                0.042
> Time of making include file index        1.157
> Time of making hypertext                15.555
> The entire time                         18.461
> 
> ======== Case 5 =============================================================
> #undef HAVE_GETRUSAGE
> #undef HAVE_GETTIMEOFDAY
> #undef HAVE_TIMES
> 
> $ htags --statistics
> period                            elapsed[sec]
> --------------------------------- ------------
> Time of making duplicate entries         2.000
> Time of making function index            0.000
> Time of making file index                0.000
> Time of making include file index        1.000
> Time of making hypertext                15.000
> The entire time                         18.000
> 
> 
> Diffstat:
>  configure.ac         |    2
>  htags/htags.c        |   50 +----
>  libutil/Makefile.am  |    4
>  libutil/global.h     |    1
>  libutil/statistics.c |  493 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>  libutil/statistics.h |   84 ++++++++
>  libutil/strbuf.c     |   15 +
>  libutil/strbuf.h     |    4
>  8 files changed, 616 insertions(+), 37 deletions(-)
> 
> ----
> Hideki IWAMOTO  address@hidden
> ______________________________________________________________________
> 
> _______________________________________________
> Bug-global mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/bug-global

----
Hideki IWAMOTO  address@hidden