Actual source code: slepc-interface.c
1: /*
2: Modification of the *temp* implementation of the BLOPEX multivector in order
3: to wrap created PETSc vectors as multivectors.
5: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
6: SLEPc - Scalable Library for Eigenvalue Problem Computations
7: Copyright (c) 2002-2011, Universitat Politecnica de Valencia, Spain
9: This file is part of SLEPc.
10:
11: SLEPc is free software: you can redistribute it and/or modify it under the
12: terms of version 3 of the GNU Lesser General Public License as published by
13: the Free Software Foundation.
15: SLEPc is distributed in the hope that it will be useful, but WITHOUT ANY
16: WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17: FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
18: more details.
20: You should have received a copy of the GNU Lesser General Public License
21: along with SLEPc. If not, see <http://www.gnu.org/licenses/>.
22: - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
23: */
25: #include <petscsys.h>
26: #include <petscvec.h>
27: #include <assert.h>
28: #include <stdlib.h>
29: #include <blopex_interpreter.h>
30: #include <blopex_temp_multivector.h>
31: #include "slepc-interface.h"
33: static void* mv_TempMultiVectorCreateFromPETScVector(void* ii_,BlopexInt n,void* sample)
34: {
35: int i;
36: Vec *vecs = (Vec*)sample;
38: mv_TempMultiVector* x;
39: mv_InterfaceInterpreter* ii = (mv_InterfaceInterpreter*)ii_;
41: x = (mv_TempMultiVector*)malloc(sizeof(mv_TempMultiVector));
42: assert(x!=NULL);
43:
44: x->interpreter = ii;
45: x->numVectors = n;
46:
47: x->vector = (void**)calloc(n,sizeof(void*));
48: assert(x->vector!=NULL);
50: x->ownsVectors = 1;
51: x->mask = NULL;
52: x->ownsMask = 0;
54: for (i=0;i<n;i++) {
55: x->vector[i] = (void*)vecs[i];
56: }
57: return x;
58: }
60: static void mv_TempMultiPETSCVectorDestroy(void* x_)
61: {
62: mv_TempMultiVector* x = (mv_TempMultiVector*)x_;
64: if (x==NULL)
65: return;
67: if (x->ownsVectors && x->vector!=NULL) free(x->vector);
68: if (x->mask && x->ownsMask) free(x->mask);
69: free(x);
70: }
72: /*
73: Create an InterfaceInterpreter using the PETSc implementation
74: but overloading CreateMultiVector that doesn't create any
75: new vector.
76: */
77: int SLEPCSetupInterpreter(mv_InterfaceInterpreter *i)
78: {
79: PETSCSetupInterpreter(i);
80: i->CreateMultiVector = mv_TempMultiVectorCreateFromPETScVector;
82: return 0;
83: }
85: /*
86: Change the multivector destructor in order to destroy the multivector
87: structure without destroy the PETSc vectors.
88: */
89: void SLEPCSetupInterpreterForDignifiedDeath(mv_InterfaceInterpreter *i)
90: {
91: i->DestroyMultiVector = mv_TempMultiPETSCVectorDestroy;
92: }