129e16f975
* DynamicList::allocSize(label)
- Adjust the allocated size. The addressed list can be truncated but not
extended, use setSize() for that.
* DynamicList::reserve(label)
- Reserve allocation for *at least* this number of elements.
Never shrinks the allocated size, nor touches the addressed list size.
* DynamicList::setSize(label)
- proposed behaviour:
Adjust the addressed list size, allocating extra space if required.
- The current behaviour is ambiguous about what addressable size will
actually get set and using it to extend the addressable size (as
per List) automatically shrinks the allocated space to this size!
108 lines
3.2 KiB
C
108 lines
3.2 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 1991-2008 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Description
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\*---------------------------------------------------------------------------*/
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#include "DynamicList.H"
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#include "IOstreams.H"
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using namespace Foam;
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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// Main program:
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int main(int argc, char *argv[])
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{
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List<DynamicList<label, 1, 0> > ldl(2);
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ldl[0](0) = 0;
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ldl[0](2) = 2;
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ldl[0](3) = 3;
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ldl[0](1) = 1;
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ldl[0].allocSize(5); // increase allocated size
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ldl[1].allocSize(10); // increase allocated size
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ldl[0].reserve(15); // should increase allocated size
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ldl[1].reserve(5); // should not decrease allocated size
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ldl[1](3) = 2; // allocates space and sets value
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// this works without a segfault, but doesn't change the list size
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ldl[0][4] = 4;
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ldl[1] = 3;
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Info<< "<ldl>" << ldl << "</ldl>" << nl << "sizes: ";
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forAll(ldl, i)
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{
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Info<< " " << ldl[i].size() << "/" << ldl[i].allocSize();
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}
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Info<< endl;
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List<List<label> > ll(2);
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ll[0].transfer(ldl[0]);
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ll[1].transfer(ldl[1].shrink());
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Info<< "<ldl>" << ldl << "</ldl>" << nl << "sizes: ";
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forAll(ldl, i)
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{
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Info<< " " << ldl[i].size() << "/" << ldl[i].allocSize();
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}
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Info<< endl;
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Info<< "<ll>" << ll << "</ll>" << nl << endl;
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// test the transfer between DynamicLists
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DynamicList<label, 1, 0> dlA;
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DynamicList<label, 1, 0> dlB;
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for (label i = 0; i < 5; i++)
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{
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dlA.append(i);
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}
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dlA.allocSize(10);
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Info<< "<dlA>" << dlA << "</dlA>" << nl << "sizes: "
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<< " " << dlA.size() << "/" << dlA.allocSize() << endl;
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dlB.transfer(dlA);
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// provokes memory error if previous transfer did not maintain
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// the correct allocated space
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dlB[6] = 6;
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Info<< "Transferred to dlB" << endl;
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Info<< "<dlA>" << dlA << "</dlA>" << nl << "sizes: "
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<< " " << dlA.size() << "/" << dlA.allocSize() << endl;
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Info<< "<dlB>" << dlB << "</dlB>" << nl << "sizes: "
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<< " " << dlB.size() << "/" << dlB.allocSize() << endl;
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return 0;
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}
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// ************************************************************************* //
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