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      1 
      2 /*---------------------------------------------------------------*/
      3 /*--- begin                                       main_util.h ---*/
      4 /*---------------------------------------------------------------*/
      5 
      6 /*
      7    This file is part of Valgrind, a dynamic binary instrumentation
      8    framework.
      9 
     10    Copyright (C) 2004-2013 OpenWorks LLP
     11       info (at) open-works.net
     12 
     13    This program is free software; you can redistribute it and/or
     14    modify it under the terms of the GNU General Public License as
     15    published by the Free Software Foundation; either version 2 of the
     16    License, or (at your option) any later version.
     17 
     18    This program is distributed in the hope that it will be useful, but
     19    WITHOUT ANY WARRANTY; without even the implied warranty of
     20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     21    General Public License for more details.
     22 
     23    You should have received a copy of the GNU General Public License
     24    along with this program; if not, write to the Free Software
     25    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     26    02110-1301, USA.
     27 
     28    The GNU General Public License is contained in the file COPYING.
     29 
     30    Neither the names of the U.S. Department of Energy nor the
     31    University of California nor the names of its contributors may be
     32    used to endorse or promote products derived from this software
     33    without prior written permission.
     34 */
     35 
     36 #ifndef __VEX_MAIN_UTIL_H
     37 #define __VEX_MAIN_UTIL_H
     38 
     39 #include "libvex_basictypes.h"
     40 
     41 
     42 /* Misc. */
     43 
     44 #define NULL ((void*)0)
     45 
     46 #define LIKELY(x)       __builtin_expect(!!(x), 1)
     47 #define UNLIKELY(x)     __builtin_expect(!!(x), 0)
     48 
     49 /* Stuff for panicking and assertion. */
     50 
     51 #define VG__STRING(__str)  #__str
     52 
     53 #define vassert(expr)                                           \
     54   ((void) (LIKELY(expr) ? 0 :                                   \
     55            (vex_assert_fail (VG__STRING(expr),                  \
     56                              __FILE__, __LINE__,                \
     57                              __PRETTY_FUNCTION__), 0)))
     58 
     59 __attribute__ ((__noreturn__))
     60 extern void vex_assert_fail ( const HChar* expr, const HChar* file,
     61                               Int line, const HChar* fn );
     62 __attribute__ ((__noreturn__))
     63 extern void vpanic ( const HChar* str );
     64 
     65 
     66 /* Printing */
     67 
     68 __attribute__ ((format (printf, 1, 2)))
     69 extern UInt vex_printf ( const HChar *format, ... );
     70 
     71 __attribute__ ((format (printf, 2, 3)))
     72 extern UInt vex_sprintf ( HChar* buf, const HChar *format, ... );
     73 
     74 
     75 /* String ops */
     76 
     77 extern Bool vex_streq ( const HChar* s1, const HChar* s2 );
     78 extern Int  vex_strlen ( const HChar* str );
     79 extern void vex_bzero ( void* s, UInt n );
     80 
     81 
     82 /* Storage management: clear the area, and allocate from it. */
     83 
     84 /* By default allocation occurs in the temporary area.  However, it is
     85    possible to switch to permanent area allocation if that's what you
     86    want.  Permanent area allocation is very limited, tho. */
     87 
     88 typedef
     89    enum {
     90       VexAllocModeTEMP,
     91       VexAllocModePERM
     92    }
     93    VexAllocMode;
     94 
     95 extern void         vexSetAllocMode ( VexAllocMode );
     96 extern VexAllocMode vexGetAllocMode ( void );
     97 extern void         vexAllocSanityCheck ( void );
     98 
     99 extern void vexSetAllocModeTEMP_and_clear ( void );
    100 
    101 #endif /* ndef __VEX_MAIN_UTIL_H */
    102 
    103 /*---------------------------------------------------------------*/
    104 /*---                                             main_util.h ---*/
    105 /*---------------------------------------------------------------*/
    106