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) 2002-2013, Universitat Politecnica de Valencia, Spain
9: This file is part of SLEPc.
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 <petscvec.h>
26: #include <stdlib.h>
27: #include <blopex_interpreter.h>
28: #include <blopex_temp_multivector.h>
29: #include "slepc-interface.h"
31: static void* mv_TempMultiVectorCreateFromPETScVector(void* ii_,BlopexInt n,void* sample)
32: {
33: int i;
34: Vec *vecs = (Vec*)sample;
36: mv_TempMultiVector* x;
37: mv_InterfaceInterpreter* ii = (mv_InterfaceInterpreter*)ii_;
39: x = (mv_TempMultiVector*)malloc(sizeof(mv_TempMultiVector));
40: if (!x) SETERRABORT(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Allocation for x failed");
42: x->interpreter = ii;
43: x->numVectors = n;
45: x->vector = (void**)calloc(n,sizeof(void*));
46: if (!x->vector) SETERRABORT(PETSC_COMM_SELF,PETSC_ERR_PLIB,"Allocation for x->vector failed");
48: x->ownsVectors = 1;
49: x->mask = NULL;
50: x->ownsMask = 0;
52: for (i=0;i<n;i++) {
53: x->vector[i] = (void*)vecs[i];
54: }
55: return x;
56: }
58: static void mv_TempMultiPETSCVectorDestroy(void* x_)
59: {
60: mv_TempMultiVector* x = (mv_TempMultiVector*)x_;
62: if (!x) return;
64: if (x->ownsVectors && x->vector) free(x->vector);
65: if (x->mask && x->ownsMask) free(x->mask);
66: free(x);
67: }
69: /*
70: Create an InterfaceInterpreter using the PETSc implementation
71: but overloading CreateMultiVector that doesn't create any
72: new vector.
73: */
74: int SLEPCSetupInterpreter(mv_InterfaceInterpreter *i)
75: {
76: PETSCSetupInterpreter(i);
77: i->CreateMultiVector = mv_TempMultiVectorCreateFromPETScVector;
79: return 0;
80: }
82: /*
83: Change the multivector destructor in order to destroy the multivector
84: structure without destroy the PETSc vectors.
85: */
86: void SLEPCSetupInterpreterForDignifiedDeath(mv_InterfaceInterpreter *i)
87: {
88: i->DestroyMultiVector = mv_TempMultiPETSCVectorDestroy;
89: }