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//------------------------------------------------------------------------------
// GB_mx_get_global: get variables from the global workspace
//------------------------------------------------------------------------------
// SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2025, All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
//------------------------------------------------------------------------------
#include "GB_mex.h"
#include "../Source/jitifyer/GB_jitifyer.h"
bool GB_mx_get_global // true if doing malloc_debug
(
bool cover // true if doing statement coverage
)
{
//--------------------------------------------------------------------------
// get malloc debug
//--------------------------------------------------------------------------
bool malloc_debug = false ;
bool *debug = NULL ;
const mxArray *debug_builtin = NULL ;
debug_builtin = mexGetVariablePtr ("global", "GraphBLAS_debug") ;
if (debug_builtin == NULL || mxIsEmpty (debug_builtin))
{
// doesn't exist; create it and set it to false
debug_builtin = GB_mx_create_full (1, 1, GrB_BOOL) ;
debug = (bool *) mxGetData (debug_builtin) ;
if (debug == NULL) mexErrMsgTxt ("debug_builtin null?!") ;
debug [0] = false ;
// copy it into the global workspace
mexPutVariable ("global", "GraphBLAS_debug", debug_builtin) ;
}
else
{
debug = (bool *) mxGetData (debug_builtin) ;
if (debug == NULL) mexErrMsgTxt ("debug_builtin null!") ;
malloc_debug = debug [0] ;
}
//--------------------------------------------------------------------------
// get test coverage
//--------------------------------------------------------------------------
GB_cover_get (cover) ;
//--------------------------------------------------------------------------
// initialize GraphBLAS
//--------------------------------------------------------------------------
// save current burble
bool burble = GB_Global_burble_get ( ) ;
// save JIT control
int control = GB_jitifyer_get_control ( ) ;
if (!GB_Global_GrB_init_called_get ( ))
{
// call GxB_init (see also gb_usage in @GrB)
mexAtExit (GB_mx_at_exit) ;
GB_Global_persistent_set (mexMakeMemoryPersistent) ;
GxB_init (GrB_NONBLOCKING, mxMalloc, mxCalloc, mxRealloc, mxFree) ;
}
// mxMalloc, mxCalloc, mxRealloc, and mxFree are not thread safe
GB_Global_malloc_is_thread_safe_set (false) ;
ASSERT (GB_Global_nmalloc_get ( ) == 0) ;
GB_Global_abort_set (GB_mx_abort) ;
GB_Global_malloc_tracking_set (true) ;
GxB_Global_Option_set_(GxB_FORMAT, GxB_BY_COL) ;
GxB_Global_Option_set_(GxB_PRINTF, mexPrintf) ;
// restore the burble
GxB_Global_Option_set_(GxB_BURBLE, burble) ;
// restore the JIT control
GB_jitifyer_set_control (control) ;
GxB_Global_Option_set_(GxB_JIT_C_CONTROL, control) ;
//--------------------------------------------------------------------------
// get nthreads
//--------------------------------------------------------------------------
int *nthreads = NULL ;
const mxArray *nthreads_builtin = NULL ;
nthreads_builtin = mexGetVariablePtr ("global", "GraphBLAS_nthreads") ;
if (nthreads_builtin == NULL || mxIsEmpty (nthreads_builtin))
{
// doesn't exist; create it and set it to 1
nthreads_builtin = GB_mx_create_full (1, 1, GrB_INT32) ;
nthreads = (int32_t *) mxGetData (nthreads_builtin) ;
if (nthreads == NULL) mexErrMsgTxt ("nthreads_builtin null?!") ;
nthreads [0] = 1 ;
// copy it into the global workspace
mexPutVariable ("global", "GraphBLAS_nthreads", nthreads_builtin) ;
}
else
{
nthreads = (int32_t *) mxGetData (nthreads_builtin) ;
if (nthreads == NULL) mexErrMsgTxt ("nthreads_builtin null!") ;
}
GxB_Global_Option_set_(GxB_NTHREADS, nthreads [0]) ;
//--------------------------------------------------------------------------
// get chunk
//--------------------------------------------------------------------------
double *chunk = NULL ;
const mxArray *chunk_builtin = NULL ;
chunk_builtin = mexGetVariablePtr ("global", "GraphBLAS_chunk") ;
if (chunk_builtin == NULL || mxIsEmpty (chunk_builtin))
{
// doesn't exist; create it and set it to GB_CHUNK_DEFAULT
chunk_builtin = GB_mx_create_full (1, 1, GrB_FP64) ;
chunk = (double *) mxGetData (chunk_builtin) ;
if (chunk == NULL) mexErrMsgTxt ("chunk_builtin null?!") ;
chunk [0] = GB_CHUNK_DEFAULT ;
// copy it into the global workspace
mexPutVariable ("global", "GraphBLAS_chunk", chunk_builtin) ;
}
else
{
chunk = (double *) mxGetData (chunk_builtin) ;
if (chunk == NULL) mexErrMsgTxt ("chunk_builtin null!") ;
}
GxB_Global_Option_set_(GxB_CHUNK, chunk [0]) ;
//--------------------------------------------------------------------------
// get GraphBLAS_complex flag and allocate the complex type and operators
//--------------------------------------------------------------------------
bool *builtin_complex = NULL ;
const mxArray *builtin_complex_builtin = NULL ;
builtin_complex_builtin =
mexGetVariablePtr ("global", "GraphBLAS_builtin_complex") ;
if (builtin_complex_builtin == NULL || mxIsEmpty (builtin_complex_builtin))
{
// doesn't exist; create it and set it to TRUE
builtin_complex_builtin = GB_mx_create_full (1, 1, GrB_BOOL) ;
builtin_complex = (bool *) mxGetData (builtin_complex_builtin) ;
if (builtin_complex == NULL)
{
mexErrMsgTxt ("builtin_complex_builtin null?!") ;
}
builtin_complex [0] = true ;
// copy it into the global workspace
mexPutVariable ("global", "GraphBLAS_builtin_complex",
builtin_complex_builtin) ;
}
else
{
builtin_complex = (bool *) mxGetData (builtin_complex_builtin) ;
if (builtin_complex == NULL)
{
mexErrMsgTxt ("builtin_complex_builtin null!") ;
}
}
Complex_init (builtin_complex [0]) ;
//--------------------------------------------------------------------------
// set the hyper_hash control to a small value
//--------------------------------------------------------------------------
GrB_Scalar s ;
GrB_Scalar_new (&s, GrB_INT64) ;
GrB_Scalar_setElement_INT64 (s, 8) ;
GrB_Global_set_Scalar (GrB_GLOBAL, s, GxB_HYPER_HASH) ;
GrB_Scalar_free (&s) ;
//--------------------------------------------------------------------------
// return malloc debug status
//--------------------------------------------------------------------------
return (malloc_debug) ;
}
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