1 /* CalculiX - A 3-dimensional finite element program */
2 /* Copyright (C) 1998-2021 Guido Dhondt */
3
4 /* This program is free software; you can redistribute it and/or */
5 /* modify it under the terms of the GNU General Public License as */
6 /* published by the Free Software Foundation(version 2); */
7 /* */
8
9 /* This program is distributed in the hope that it will be useful, */
10 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
11 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
12 /* GNU General Public License for more details. */
13
14 /* You should have received a copy of the GNU General Public License */
15 /* along with this program; if not, write to the Free Software */
16 /* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
17
18 #include <unistd.h>
19 #include <stdio.h>
20 #include <math.h>
21 #include <stdlib.h>
22 #include <pthread.h>
23 #include "CalculiX.h"
24
25 static ITG *nface1,*ielfa1,*ipnei1,*nef1,*num_cpus1;
26
27 static double *vel1,*flux1,*vfa1;
28
hro_udmain(ITG * nface,ITG * ielfa,double * vel,ITG * ipnei,ITG * nef,double * flux,double * vfa,ITG * num_cpus)29 void hro_udmain(ITG *nface,ITG *ielfa,double *vel,ITG *ipnei,ITG *nef,
30 double *flux,double *vfa,ITG *num_cpus){
31
32 ITG i;
33
34 /* variables for multithreading procedure */
35
36 ITG *ithread=NULL;;
37
38 pthread_t tid[*num_cpus];
39
40 /* calculation of the density at the cell centers */
41
42 ielfa1=ielfa;vel1=vel;ipnei1=ipnei;nef1=nef;flux1=flux;vfa1=vfa;
43 num_cpus1=num_cpus;nface1=nface;
44
45 /* create threads and wait */
46
47 NNEW(ithread,ITG,*num_cpus);
48 for(i=0; i<*num_cpus; i++) {
49 ithread[i]=i;
50 pthread_create(&tid[i], NULL, (void *)hro_ud1mt, (void *)&ithread[i]);
51 }
52 for(i=0; i<*num_cpus; i++) pthread_join(tid[i], NULL);
53
54 SFREE(ithread);
55
56 return;
57
58 }
59
60 /* subroutine for multithreading of calcgammav1 */
61
hro_ud1mt(ITG * i)62 void *hro_ud1mt(ITG *i){
63
64 ITG nfacea,nfaceb,nfacedelta;
65
66 nfacedelta=(ITG)floor(*nface1/(double)(*num_cpus1));
67 nfacea=*i*nfacedelta+1;
68 nfaceb=(*i+1)*nfacedelta;
69 if((*i==*num_cpus1-1)&&(nfaceb<*nface1)) nfaceb=*nface1;
70
71 FORTRAN(hro_ud,(ielfa1,vel1,ipnei1,nef1,flux1,vfa1,
72 &nfacea,&nfaceb));
73
74 return NULL;
75 }
76