Actual source code: sread.c
1: /*
2:
3: This is the equivalent of Matlab's fread() only on sockets instead of
4: binary files.
5: */
7: #include <stdio.h>
8: #include petscsys.h
9: #include src/sys/viewer/impls/socket/socket.h
10: #include "mex.h"
12: PetscErrorCode PetscBinaryRead(int,void *p,int,PetscDataType);
14: #define PETSC_MEX_ERROR(a) {fprintf(stdout,"sread: %s \n",a); return ;}
15: /*-----------------------------------------------------------------*/
16: /* */
17: /*-----------------------------------------------------------------*/
20: void mexFunction(int nlhs,mxArray *plhs[],int nrhs,const mxArray *prhs[])
21: {
22: int fd,cnt,dt;
24: /* check output parameters */
25: if (nlhs != 1) PETSC_MEX_ERROR("Receive requires one output argument.");
27: if (nrhs != 3) PETSC_MEX_ERROR("Receive requires three input arguments.");
28: fd = *(int*)mxGetPr(prhs[0]);
29: cnt = *(int*)mxGetPr(prhs[1]);
30: dt = *(PetscDataType*)mxGetPr(prhs[2]);
32: plhs[0] = mxCreateDoubleMatrix(1,cnt,mxREAL);
33: PetscBinaryRead(fd,mxGetPr(plhs[0]),cnt,dt);if (ierr) PETSC_MEX_ERROR("Unable to receive %d items.",cnt);
34: return;
35: }