Mercurial > octave
view scripts/profiler/profile.m @ 33426:25faa5446214 stable
profile.m: Clear existing profile data when profiler enabled (bug #65595)
* NEWS.9.md: Add description of bugfix to 9.2 release notes.
* profile.m: In case "on", call __profiler_reset__ () before enabling profiler.
author | Rik <rik@octave.org> |
---|---|
date | Wed, 17 Apr 2024 15:25:34 -0700 |
parents | 9fcb77b0341b |
children | 761b404e9569 |
line wrap: on
line source
######################################################################## ## ## Copyright (C) 2012-2024 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave is free software: you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation, either version 3 of the License, or ## (at your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {} profile on ## @deftypefnx {} {} profile off ## @deftypefnx {} {} profile resume ## @deftypefnx {} {} profile clear ## @deftypefnx {} {@var{S} =} profile ("status") ## @deftypefnx {} {@var{T} =} profile ("info") ## Control the built-in profiler. ## ## @table @code ## @item profile on ## Start the profiler. Any previously collected data is cleared. ## ## @item profile off ## Stop profiling. The collected data can later be retrieved and examined ## with @code{T = profile ("info")}. ## ## @item profile clear ## Clear all collected profiler data. ## ## @item profile resume ## Restart profiling without clearing the old data. All newly collected ## statistics are added to the existing ones. ## ## @item @var{S} = profile ("status") ## Return a structure with information about the current status of the ## profiler. At the moment, the only field is @code{ProfilerStatus} which is ## either @qcode{"on"} or @qcode{"off"}. ## ## @item @var{T} = profile ("info") ## Return the collected profiling statistics in the structure @var{T}. The ## flat profile is returned in the field @code{FunctionTable} which is an ## array of structures, each entry corresponding to a function which was called ## and for which profiling statistics are present. In addition, the field ## @code{Hierarchical} contains the hierarchical call tree. Each node has an ## index into the @code{FunctionTable} identifying the function it corresponds ## to as well as data fields for number of calls and time spent at this level ## in the call tree. ## @end table ## ## @seealso{profshow, profexplore} ## @end deftypefn function retval = profile (arg) if (nargin < 1) print_usage (); endif switch (arg) case "on" if (__profiler_enable__ ()) __profiler_enable__ (false); endif __profiler_reset__ (); __profiler_enable__ (true); case "off" __profiler_enable__ (false); case "clear" __profiler_reset__ (); case "resume" __profiler_enable__ (true); case "status" enabled = __profiler_enable__ (); if (enabled) enabled = "on"; else enabled = "off"; endif retval = struct ("ProfilerStatus", enabled); case "info" [flat, tree] = __profiler_data__ (); retval = struct ("FunctionTable", flat, "Hierarchical", tree); otherwise warning ("profile: Unrecognized option '%s'", arg); print_usage (); endswitch endfunction %!demo %! profile on; %! A = rand (100); %! B = expm (A); %! profile off; %! profile resume; %! C = sqrtm (A); %! profile off; %! T = profile ("info"); %! profshow (T); %!test %! on_struct.ProfilerStatus = "on"; %! off_struct.ProfilerStatus = "off"; %! profile ("on"); %! result = logm (rand (200) + 10 * eye (200)); %! assert (profile ("status"), on_struct); %! profile ("off"); %! assert (profile ("status"), off_struct); %! profile ("resume"); %! result = logm (rand (200) + 10 * eye (200)); %! profile ("off"); %! assert (profile ("status"), off_struct); %! info = profile ("info"); %! assert (isstruct (info)); %! assert (size (info), [1, 1]); %! assert (fieldnames (info), {"FunctionTable"; "Hierarchical"}); %! ftbl = info.FunctionTable; %! assert (fieldnames (ftbl), {"FunctionName"; "TotalTime"; "NumCalls"; "IsRecursive"; "Parents"; "Children"}); %! hier = info.Hierarchical; %! assert (fieldnames (hier), {"Index"; "SelfTime"; "TotalTime"; "NumCalls"; "Children"}); %! profile ("clear"); %! info = profile ("info"); %! assert (isstruct (info)); %! assert (size (info), [1, 1]); %! assert (fieldnames (info), {"FunctionTable"; "Hierarchical"}); %! ftbl = info.FunctionTable; %! assert (size (ftbl), [0, 1]); %! assert (fieldnames (ftbl), {"FunctionName"; "TotalTime"; "NumCalls"; "IsRecursive"; "Parents"; "Children"}); %! hier = info.Hierarchical; %! assert (size (hier), [0, 1]); %! assert (fieldnames (hier), {"Index"; "SelfTime"; "TotalTime"; "NumCalls"; "Children"}); ## Test input validation %!error <Invalid call> profile () %!error profile ("on", 2) %!error profile ("INVALID_OPTION")