Mercurial > octave
view scripts/java/javamem.m @ 27984:b09432b20a84
maint: Remove special cases of old version control keywords in code base.
* common_size.m, cumtrapz.m, interp1.m, polyarea.m, trapz.m, inpolygon.m,
summer.m, javamem.m, duplication_matrix.m, subspace.m, starting_stepsize.m,
text.m, errorbar.m, loglogerr.m, peaks.m, __errplot__.m, semilogxerr.m,
semilogyerr.m, stemleaf.m, streamtube.m, __pltopt__.m, printd.m, pchip.m,
arch_fit.m, arch_rnd.m, arch_test.m, arma_rnd.m, autoreg_matrix.m, bartlett.m,
blackman.m, diffpara.m, durbinlevinson.m, fractdiff.m, hamming.m, hanning.m,
hurst.m, ifftshift.m, periodogram.m, rectangle_lw.m, rectangle_sw.m,
triangle_lw.m, triangle_sw.m, sinetone.m, sinewave.m, spectral_adf.m,
spectral_xdf.m, spencer.m, stft.m, synthesis.m, yulewalker.m, bicg.m,
bicgstab.m, cgs.m, gmres.m, pcr.m, sprand.m, tfqmr.m, betaincinv.m, betaln.m,
gammaincinv.m, hadamard.m, center.m, cov.m, discrete_inv.m, discrete_pdf.m,
discrete_rnd.m, empirical_cdf.m, empirical_inv.m, empirical_pdf.m,
empirical_rnd.m, iqr.m, kendall.m, mean.m, meansq.m, moment.m, prctile.m,
quantile.m, range.m, run_count.m, spearman.m, statistics.m, var.m, zscore.m,
datenum.m, datevec.m:
Remove special cases of old version control keywords in code base.
author | Rik <rik@octave.org> |
---|---|
date | Tue, 21 Jan 2020 14:04:31 -0800 |
parents | bdad8ca48700 |
children | 0a5b15007766 |
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######################################################################## ## ## Copyright (C) 2010-2020 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 {} {} javamem () ## @deftypefnx {} {@var{jmem} =} javamem () ## Show the current memory usage of the Java virtual machine (JVM) and run the ## garbage collector. ## ## When no return argument is given the info is printed to the screen. ## Otherwise, the output cell array @var{jmem} contains Maximum, Total, and ## Free memory (in bytes). ## ## All Java-based routines are run in the JVM's shared memory pool, a ## dedicated and separate part of memory claimed by the JVM from your ## computer's total memory (which comprises physical RAM and virtual memory / ## swap space on hard disk). ## ## The maximum allowable memory usage can be configured using the file ## @file{java.opts}. The directory where this file resides is determined by ## the environment variable @w{@env{OCTAVE_JAVA_DIR}}. If unset, the directory ## where @file{javaaddpath.m} resides is used instead (typically ## @file{@w{@env{OCTAVE_HOME}}/share/octave/@w{@env{OCTAVE_VERSION}}/m/java/}). ## ## @file{java.opts} is a plain text file with one option per line. The default ## initial memory size and default maximum memory size (which are both system ## dependent) can be overridden like so: ## ## @nospell{-Xms64m} ## ## @nospell{-Xmx512m} ## ## (in megabytes in this example). ## You can adapt these values to your own requirements if your system has ## limited available physical memory or if you get Java memory errors. ## ## @qcode{"Total memory"} is what the operating system has currently assigned ## to the JVM and depends on actual and active memory usage. ## @qcode{"Free memory"} is self-explanatory. During operation of Java-based ## Octave functions the amount of Total and Free memory will vary, due to ## Java's own cleaning up and your operating system's memory management. ## @end deftypefn function jmem = javamem () rt = javaMethod ("getRuntime", "java.lang.Runtime"); rt.gc; jvmem = cell (3, 1); jvmem{1} = rt.maxMemory (); jvmem{2} = rt.totalMemory (); jvmem{3} = rt.freeMemory (); if (nargout == 0) printf ("\nJava virtual machine (JVM) memory info:\n"); printf ("Maximum available memory: %5d MiB;\n", jvmem{1} / 1024 / 1024); printf (" (...running garbage collector...)\n"); printf ("OK, current status:\n"); printf ("Total memory in virtual machine: %5d MiB;\n", jvmem{2} / 1024 / 1024); printf ("Free memory in virtual machine: %5d MiB;\n", jvmem{3} / 1024 / 1024); printf ("%d CPUs available.\n", rt.availableProcessors ()); else jmem = jvmem; endif endfunction