Line data    Source code

       1             : //------------------------------------------------------------------------------
       2             : // LAGraph_Delete: deletes a graph and all its contents
       3             : //------------------------------------------------------------------------------
       4             : 
       5             : // LAGraph, (c) 2019-2022 by The LAGraph Contributors, All Rights Reserved.
       6             : // SPDX-License-Identifier: BSD-2-Clause
       7             : //
       8             : // For additional details (including references to third party source code and
       9             : // other files) see the LICENSE file or contact permission@sei.cmu.edu. See
      10             : // Contributors.txt for a full list of contributors. Created, in part, with
      11             : // funding and support from the U.S. Government (see Acknowledgments.txt file).
      12             : // DM22-0790
      13             : 
      14             : // Contributed by Timothy A. Davis, Texas A&M University
      15             : 
      16             : //------------------------------------------------------------------------------
      17             : 
      18             : #include "LG_internal.h"
      19             : 
      20        1136 : int LAGraph_Delete
      21             : (
      22             :     // input/output:
      23             :     LAGraph_Graph *G,   // the graph to delete; G set to NULL on output.
      24             :                         // All internal GrB_Matrix and GrB_Vector objects are
      25             :                         // freed, including G->A.  To keep G->A while deleting
      26             :                         // the graph G, use:
      27             :                         // { A = G->A ; G->A = NULL ; LAGraph_Delete (&G, msg);}
      28             :     char *msg
      29             : )
      30             : {
      31             : 
      32             :     //--------------------------------------------------------------------------
      33             :     // check inputs
      34             :     //--------------------------------------------------------------------------
      35             : 
      36        1136 :     LG_CLEAR_MSG ;
      37        1136 :     if (G == NULL || (*G) == NULL)
      38             :     {
      39             :         // success: nothing to do
      40           3 :         return (GrB_SUCCESS) ;
      41             :     }
      42             : 
      43             :     //--------------------------------------------------------------------------
      44             :     // free the cached contents of the graph
      45             :     //--------------------------------------------------------------------------
      46             : 
      47        1133 :     LG_TRY (LAGraph_DeleteCached (*G, msg)) ;
      48             : 
      49             :     //--------------------------------------------------------------------------
      50             :     // delete the primary contents of the graph, and the graph itself
      51             :     //--------------------------------------------------------------------------
      52             : 
      53        1133 :     GRB_TRY (GrB_free (&((*G)->A))) ;
      54        1133 :     LAGraph_Free ((void **) G, NULL) ;
      55        1133 :     return (GrB_SUCCESS) ;
      56             : }