COIN-OR::LEMON - Graph Library

source: glpk-cmake/src/glpenv04.c @ 1:c445c931472f

Last change on this file since 1:c445c931472f was 1:c445c931472f, checked in by Alpar Juttner <alpar@…>, 10 years ago

Import glpk-4.45

  • Generated files and doc/notes are removed
File size: 3.8 KB
Line 
1/* glpenv04.c (error handling) */
2
3/***********************************************************************
4*  This code is part of GLPK (GNU Linear Programming Kit).
5*
6*  Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
7*  2009, 2010 Andrew Makhorin, Department for Applied Informatics,
8*  Moscow Aviation Institute, Moscow, Russia. All rights reserved.
9*  E-mail: <mao@gnu.org>.
10*
11*  GLPK is free software: you can redistribute it and/or modify it
12*  under the terms of the GNU General Public License as published by
13*  the Free Software Foundation, either version 3 of the License, or
14*  (at your option) any later version.
15*
16*  GLPK is distributed in the hope that it will be useful, but WITHOUT
17*  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18*  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19*  License for more details.
20*
21*  You should have received a copy of the GNU General Public License
22*  along with GLPK. If not, see <http://www.gnu.org/licenses/>.
23***********************************************************************/
24
25#include "glpapi.h"
26
27/***********************************************************************
28*  NAME
29*
30*  glp_error - display error message and terminate execution
31*
32*  SYNOPSIS
33*
34*  void glp_error(const char *fmt, ...);
35*
36*  DESCRIPTION
37*
38*  The routine glp_error (implemented as a macro) formats its
39*  parameters using the format control string fmt, writes the formatted
40*  message to the terminal, and abnormally terminates the program. */
41
42static void error(const char *fmt, ...)
43{     ENV *env = get_env_ptr();
44      va_list arg;
45      env->term_out = GLP_ON;
46      va_start(arg, fmt);
47      xvprintf(fmt, arg);
48      va_end(arg);
49      xprintf("Error detected in file %s at line %d\n", env->err_file,
50         env->err_line);
51      if (env->err_hook != NULL)
52         env->err_hook(env->err_info);
53      abort();
54      exit(EXIT_FAILURE);
55      /* no return */
56}
57
58_glp_error glp_error_(const char *file, int line)
59{     ENV *env = get_env_ptr();
60      env->err_file = file;
61      env->err_line = line;
62      return error;
63}
64
65/***********************************************************************
66*  NAME
67*
68*  glp_assert - check for logical condition
69*
70*  SYNOPSIS
71*
72*  #include "glplib.h"
73*  void glp_assert(int expr);
74*
75*  DESCRIPTION
76*
77*  The routine glp_assert (implemented as a macro) checks for a logical
78*  condition specified by the parameter expr. If the condition is false
79*  (i.e. the value of expr is zero), the routine writes a message to
80*  the terminal and abnormally terminates the program. */
81
82void glp_assert_(const char *expr, const char *file, int line)
83{     glp_error_(file, line)("Assertion failed: %s\n", expr);
84      /* no return */
85}
86
87/***********************************************************************
88*  NAME
89*
90*  glp_error_hook - install hook to intercept abnormal termination
91*
92*  SYNOPSIS
93*
94*  void glp_error_hook(void (*func)(void *info), void *info);
95*
96*  DESCRIPTION
97*
98*  The routine glp_error_hook installs a user-defined hook routine to
99*  intercept abnormal termination.
100*
101*  The parameter func specifies the user-defined hook routine. It is
102*  called from the routine glp_error before the latter calls the abort
103*  function to abnormally terminate the application program because of
104*  fatal error. The parameter info is a transit pointer, specified in
105*  the corresponding call to the routine glp_error_hook; it may be used
106*  to pass some information to the hook routine.
107*
108*  To uninstall the hook routine the parameters func and info should be
109*  specified as NULL. */
110
111void glp_error_hook(void (*func)(void *info), void *info)
112{     ENV *env = get_env_ptr();
113      if (func == NULL)
114      {  env->err_hook = NULL;
115         env->err_info = NULL;
116      }
117      else
118      {  env->err_hook = func;
119         env->err_info = info;
120      }
121      return;
122}
123
124/* eof */
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