1 
2 /*--------------------------------------------------------------------*/
3 /*--- Assertions, etc.                       pub_core_libcassert.h ---*/
4 /*--------------------------------------------------------------------*/
5 
6 /*
7    This file is part of Valgrind, a dynamic binary instrumentation
8    framework.
9 
10    Copyright (C) 2000-2017 Julian Seward
11       jseward@acm.org
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., 59 Temple Place, Suite 330, Boston, MA
26    02111-1307, USA.
27 
28    The GNU General Public License is contained in the file COPYING.
29 */
30 
31 #ifndef __PUB_CORE_LIBCASSERT_H
32 #define __PUB_CORE_LIBCASSERT_H
33 
34 //--------------------------------------------------------------------
35 // PURPOSE: This module contains all the libc code related to assertions,
36 // panics and aborting.
37 //--------------------------------------------------------------------
38 
39 #include "pub_tool_libcassert.h"
40 #include "pub_core_basics.h"      // UnwindStartRegs
41 
42 // Useful for making failing stubs, when certain things haven't yet been
43 // implemented.
44 #define I_die_here                                             \
45    VG_(assert_fail) (/*isCore*//*BOGUS*/True,                  \
46                      "Unimplemented functionality",            \
47                      __FILE__, __LINE__, __PRETTY_FUNCTION__,  \
48                      "valgrind", VG_BUGS_TO, "")
49 
50 #define vg_assert(expr)                                                 \
51   ((void) (LIKELY(expr) ? 0 :                                           \
52            (VG_(assert_fail) (/*isCore*/True, #expr,                    \
53                               __FILE__, __LINE__, __PRETTY_FUNCTION__,  \
54                               ""),                                      \
55                               0)))
56 
57 #define vg_assert2(expr, format, args...)                               \
58   ((void) (LIKELY(expr) ? 0 :                                           \
59            (VG_(assert_fail) (/*isCore*/True, #expr,                    \
60                               __FILE__, __LINE__, __PRETTY_FUNCTION__,  \
61                               format, ##args),                          \
62                               0)))
63 
64 __attribute__ ((__noreturn__))
65 extern void  VG_(core_panic)      ( const HChar* str );
66 __attribute__ ((__noreturn__))
67 extern void  VG_(core_panic_at)   ( const HChar* str, const UnwindStartRegs* );
68 
69 /* Exits with status as client exit code. */
70 extern void VG_(client_exit)( Int status );
71 
72 /* Lightweight exit without any dependencies. */
73 __attribute__ ((__noreturn__))
74 extern void VG_(exit_now)( Int status );
75 
76 /* Called when some unhandleable client behaviour is detected.
77    Prints a msg and aborts. */
78 extern void VG_(unimplemented) ( const HChar* format, ... )
79             __attribute__((__noreturn__))
80             PRINTF_CHECK(1, 2);
81 
82 /* Show the state of various threads related information, such
83    as the guest stacktrace for each thread.
84    Mostly for debugging V.
85    The following activates optional output:
86      host_stacktrace : shows the host stacktrace.
87      stack_usage True means:
88                    shows how much of the valgrind stack was used.
89                    shows the client stack range
90      exited_thread_slots : show information for thread slots that were used
91         but the thread has now exited. */
92 extern void VG_(show_sched_status) ( Bool host_stacktrace,
93                                      Bool stack_usage,
94                                      Bool exited_threads);
95 
96 #endif   // __PUB_CORE_LIBCASSERT_H
97 
98 /*--------------------------------------------------------------------*/
99 /*--- end                                                          ---*/
100 /*--------------------------------------------------------------------*/
101