src/base/misc.hh

   1 /*
   2  * Copyright (c) 2014 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2002-2005 The Regents of The University of Michigan
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  *
  40  * Authors: Nathan Binkert
  41  *          Dave Greene
  42  */
  43
  44 #ifndef __BASE_MISC_HH__
  45 #define __BASE_MISC_HH__
  46
  47 #include "base/compiler.hh"
  48 #include "base/cprintf.hh"
  49 #include "base/varargs.hh"
  50
  51 #if defined(__SUNPRO_CC)
  52 #define __FUNCTION__ "how to fix me?"
  53 #endif
  54
  55 // General exit message, these functions will never return and will
  56 // either abort() if code is < 0 or exit with the code if >= 0
  57 void __exit_message(const char *prefix, int code,
  58     const char *func, const char *file, int line,
  59     const char *format, CPRINTF_DECLARATION) M5_ATTR_NORETURN;
  60
  61 void __exit_message(const char *prefix, int code,
  62     const char *func, const char *file, int line,
  63     const std::string &format, CPRINTF_DECLARATION) M5_ATTR_NORETURN;
  64
  65 inline void
  66 __exit_message(const char *prefix, int code,
  67     const char *func, const char *file, int line,
  68     const std::string& format, CPRINTF_DEFINITION)
  69 {
  70     __exit_message(prefix, code, func, file, line, format.c_str(),
  71                    VARARGS_ALLARGS);
  72 }
  73
  74 #define exit_message(prefix, code, ...)                            \
  75     __exit_message(prefix, code, __FUNCTION__, __FILE__, __LINE__, \
  76                    __VA_ARGS__)
  77
  78 //
  79 // This implements a cprintf based panic() function.  panic() should
  80 // be called when something happens that should never ever happen
  81 // regardless of what the user does (i.e., an acutal m5 bug).  panic()
  82 // calls abort which can dump core or enter the debugger.
  83 //
  84 //
  85 #define panic(...) exit_message("panic", -1, __VA_ARGS__)
  86
  87 //
  88 // This implements a cprintf based fatal() function.  fatal() should
  89 // be called when the simulation cannot continue due to some condition
  90 // that is the user's fault (bad configuration, invalid arguments,
  91 // etc.) and not a simulator bug.  fatal() calls  abort() like
  92 // panic() does.
  93 //
  94 #define fatal(...) exit_message("fatal", -1, __VA_ARGS__)
  95
  96 /**
  97  * Conditional panic macro that checks the supplied condition and only panics
  98  * if the condition is true and allows the programmer to specify diagnostic
  99  * printout.  Useful to replace if + panic, or if + print + assert, etc.
 100  *
 101  * @param cond Condition that is checked; if true -> panic
 102  * @param ...  Printf-based format string with arguments, extends printout.
 103  */
 104 #define panic_if(cond, ...) \
 105     do { \
 106         if ((cond)) \
 107             exit_message("panic condition "#cond" occurred", -1, __VA_ARGS__); \
 108     } while (0)
 109
 110
 111 /**
 112  * Conditional fatal macro that checks the supplied condition and only causes a
 113  * fatal error if the condition is true and allows the programmer to specify
 114  * diagnostic printout.  Useful to replace if + fatal, or if + print + assert,
 115  * etc.
 116  *
 117  * @param cond Condition that is checked; if true -> fatal
 118  * @param ...  Printf-based format string with arguments, extends printout.
 119  */
 120 #define fatal_if(cond, ...) \
 121     do { \
 122         if ((cond)) \
 123             exit_message("fatal condition "#cond" occurred", 1, __VA_ARGS__); \
 124     } while (0)
 125
 126
 127 void
 128 __base_message(std::ostream &stream, const char *prefix, bool verbose,
 129           const char *func, const char *file, int line,
 130           const char *format, CPRINTF_DECLARATION);
 131
 132 inline void
 133 __base_message(std::ostream &stream, const char *prefix, bool verbose,
 134           const char *func, const char *file, int line,
 135           const std::string &format, CPRINTF_DECLARATION)
 136 {
 137     __base_message(stream, prefix, verbose, func, file, line, format.c_str(),
 138               VARARGS_ALLARGS);
 139 }
 140
 141 #define base_message(stream, prefix, verbose, ...)                      \
 142     __base_message(stream, prefix, verbose, __FUNCTION__, __FILE__, __LINE__, \
 143                    __VA_ARGS__)
 144
 145 // Only print the message the first time this expression is
 146 // encountered.  i.e.  This doesn't check the string itself and
 147 // prevent duplicate strings, this prevents the statement from
 148 // happening more than once. So, even if the arguments change and that
 149 // would have resulted in a different message thoes messages would be
 150 // supressed.
 151 #define base_message_once(...) do {                     \
 152         static bool once = false;                       \
 153         if (!once) {                                    \
 154             base_message(__VA_ARGS__);                  \
 155             once = true;                                \
 156         }                                               \
 157     } while (0)
 158
 159 #define cond_message(cond, ...) do {            \
 160         if (cond)                               \
 161             base_message(__VA_ARGS__);          \
 162     } while (0)
 163
 164 #define cond_message_once(cond, ...) do {               \
 165         static bool once = false;                       \
 166         if (!once && cond) {                            \
 167             base_message(__VA_ARGS__);                  \
 168             once = true;                                \
 169         }                                               \
 170     } while (0)
 171
 172
 173 extern bool want_warn, warn_verbose;
 174 extern bool want_info, info_verbose;
 175 extern bool want_hack, hack_verbose;
 176
 177 #define warn(...) \
 178     cond_message(want_warn, std::cerr, "warn", warn_verbose, __VA_ARGS__)
 179 #define inform(...) \
 180     cond_message(want_info, std::cout, "info", info_verbose, __VA_ARGS__)
 181 #define hack(...) \
 182     cond_message(want_hack, std::cerr, "hack", hack_verbose, __VA_ARGS__)
 183
 184 #define warn_once(...) \
 185     cond_message_once(want_warn, std::cerr, "warn", warn_verbose, __VA_ARGS__)
 186 #define inform_once(...) \
 187     cond_message_once(want_info, std::cout, "info", info_verbose, __VA_ARGS__)
 188 #define hack_once(...) \
 189     cond_message_once(want_hack, std::cerr, "hack", hack_verbose, __VA_ARGS__)
 190
 191 /**
 192  * The chatty assert macro will function like a normal assert, but will allow the
 193  * specification of additional, helpful material to aid debugging why the
 194  * assertion actually failed.  Like the normal assertion, the chatty_assert
 195  * will not be active in fast builds.
 196  *
 197  * @param cond Condition that is checked; if false -> assert
 198  * @param ...  Printf-based format string with arguments, extends printout.
 199  */
 200 #ifdef NDEBUG
 201 #define chatty_assert(cond, ...)
 202 #else //!NDEBUG
 203 #define chatty_assert(cond, ...)                                                \
 204     do {                                                                        \
 205         if (!(cond)) {                                                          \
 206             base_message(std::cerr, "assert("#cond") failing", 1, __VA_ARGS__); \
 207             assert(cond);                                                       \
 208         }                                                                       \
 209     } while (0)
 210 #endif // NDEBUG
 211 #endif // __BASE_MISC_HH__