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//------------------------------------------------------------------------------
// gbcov_util.c: utilities for test coverage
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
// These functions are compiled along with the GraphBLAS mexFunctions, to
// allow them to copy the statement coverage counts to and from the built-in
// global workspace.
#include "gb_interface.h"
//------------------------------------------------------------------------------
// gbcov_get: copy coverage counts from the built-in workspace
//------------------------------------------------------------------------------
// This function is called when a GraphBLAS mexFunction starts.
// gbcov_global is an int64 built-in array in the built-in global workspace.
// Its size is controlled by gbcov_max, defined in gbcovfinish.c. If the
// array is empty in the workspace, or if it doesn't exist, it is created with
// the correct size. Then the internal gbcov array is copied into it.
// mxGetData is used instead of the MATLAB-recommended mxGetDoubles, etc,
// because mxGetData works best for Octave, and it works fine for MATLAB
// since GraphBLAS requires R2018a with the interleaved complex data type.
void gbcov_get ( )
{
// get gbcov_global from built-in global workspace
mxArray *GB_cov_global = NULL ;
GB_cov_global = (mxArray *) mexGetVariablePtr ("global", "gbcov_global") ;
if (GB_cov_global == NULL || mxIsEmpty (GB_cov_global))
{
// doesn't exist; create it and set it to zero
GB_cov_global = mxCreateNumericMatrix (1, gbcov_max,
mxINT64_CLASS, mxREAL) ;
// copy it back to the built-in global workspace
mexPutVariable ("global", "gbcov_global", GB_cov_global) ;
}
// it should exist now, but double-check
if (GB_cov_global == NULL || mxIsEmpty (GB_cov_global))
{
mexErrMsgIdAndTxt ("GrB:panic", "GB_cov_global still null!") ;
}
// get a pointer to the content of the gbcov_global array in the
// global workspace
int64_t *g = (int64_t *) mxGetData (GB_cov_global) ;
// getting paranoid here; this should never happen
if (g == NULL) mexErrMsgIdAndTxt ("GrB:panic", "g null!") ;
// copy the count from the built-in gbcov_global into gbcov
memcpy (gbcov, g, gbcov_max * sizeof (int64_t)) ;
}
//------------------------------------------------------------------------------
// gbcov_put: copy coverage counts back to the built-in workspace
//------------------------------------------------------------------------------
// This function is called when a GraphBLAS mexFunction finishes. It copies
// the updated statement coverage counters in the gbcov array back to the
// gbcov_global array in the built-in global workspace where it can be
// analyzed.
void gbcov_put ( )
{
// create a built-in array with the right size
mxArray * GB_cov_global = mxCreateNumericMatrix (1, gbcov_max,
mxINT64_CLASS, mxREAL) ;
// copy the updated gbcov counter array into the built-in array
int64_t *g = (int64_t *) mxGetData (GB_cov_global) ;
memcpy (g, gbcov, gbcov_max * sizeof (int64_t)) ;
// put the built-in array into the global workspace, overwriting the
// version that was already there
mexPutVariable ("global", "gbcov_global", GB_cov_global) ;
}
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