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      1 /* Copyright (C) 2012-2016 Free Software Foundation, Inc.
      2 
      3    This file is part of GNU Binutils.
      4 
      5    This program is free software; you can redistribute it and/or modify
      6    it under the terms of the GNU General Public License as published by
      7    the Free Software Foundation; either version 3 of the License, or
      8    (at your option) any later version.
      9 
     10    This program is distributed in the hope that it will be useful,
     11    but WITHOUT ANY WARRANTY; without even the implied warranty of
     12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     13    GNU General Public License for more details.
     14 
     15    You should have received a copy of the GNU General Public License
     16    along with this program; if not, write to the Free Software
     17    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
     18    MA 02110-1301, USA.  */
     19 
     20 #ifndef cg_arcs_h
     22 #define cg_arcs_h
     23 
     24 /*
     25  * Arc structure for call-graph.
     26  *
     27  * With pointers to the symbols of the parent and the child, a count
     28  * of how many times this arc was traversed, and pointers to the next
     29  * parent of this child and the next child of this parent.
     30  */
     31 typedef struct arc
     32   {
     33     Sym *parent;		/* source vertice of arc */
     34     Sym *child;			/* dest vertice of arc */
     35     unsigned long count;	/* # of calls from parent to child */
     36     double time;		/* time inherited along arc */
     37     double child_time;		/* child-time inherited along arc */
     38     struct arc *next_parent;	/* next parent of CHILD */
     39     struct arc *next_child;	/* next child of PARENT */
     40     int has_been_placed;	/* have this arc's functions been placed? */
     41   }
     42 Arc;
     43 
     44 extern unsigned int num_cycles;	/* number of cycles discovered */
     45 extern Sym *cycle_header;	/* cycle headers */
     46 
     47 extern void arc_add (Sym * parent, Sym * child, unsigned long count);
     48 extern Arc *arc_lookup (Sym * parent, Sym * child);
     49 extern Sym **cg_assemble (void);
     50 extern Arc **arcs;
     51 extern unsigned int numarcs;
     52 
     53 #endif /* cg_arcs_h */
     54