logging.hh (12334:e0ab29a34764) logging.hh (12375:ceeb064dec4a)
1/*
2 * Copyright (c) 2014, 2017 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

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41 * Dave Greene
42 * Andreas Sandberg
43 */
44
45#ifndef __BASE_LOGGING_HH__
46#define __BASE_LOGGING_HH__
47
48#include <cassert>
1/*
2 * Copyright (c) 2014, 2017 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

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41 * Dave Greene
42 * Andreas Sandberg
43 */
44
45#ifndef __BASE_LOGGING_HH__
46#define __BASE_LOGGING_HH__
47
48#include <cassert>
49#include <cstdlib>
50#include <iostream>
49#include <sstream>
51#include <utility>
52
53#include "base/compiler.hh"
54#include "base/cprintf.hh"
55
50#include <utility>
51
52#include "base/compiler.hh"
53#include "base/cprintf.hh"
54
56#if defined(__SUNPRO_CC)
57#define __FUNCTION__ "how to fix me?"
58#endif
59
60class Logger
61{
62 public:
55class Logger
56{
57 public:
58
59 // Get a Logger for the specified type of message.
60 static Logger &getPanic();
61 static Logger &getFatal();
62 static Logger &getWarn();
63 static Logger &getInfo();
64 static Logger &getHack();
65
63 enum LogLevel {
66 enum LogLevel {
64 PANIC = 0,
65 FATAL,
66 WARN,
67 INFO,
68 HACK,
67 PANIC, FATAL, WARN, INFO, HACK,
69 NUM_LOG_LEVELS,
70 };
71
68 NUM_LOG_LEVELS,
69 };
70
72 /**
73 * Set the active log level.
74 *
75 * All levels that are lower or equal to the selected log level
76 * will be activated.
77 *
78 * @param ll Maximum log level to print
79 */
80 static void setLevel(LogLevel ll);
71 static void
72 setLevel(LogLevel ll)
73 {
74 getPanic().enabled = (ll >= PANIC);
75 getFatal().enabled = (ll >= FATAL);
76 getWarn().enabled = (ll >= WARN);
77 getInfo().enabled = (ll >= INFO);
78 getHack().enabled = (ll >= HACK);
79 }
81
80
82 /**
83 * Get a Logger corresponding to a specific log level
84 *
85 * @param ll Log level to access
86 * @return Reference to the requested logger
87 */
88 static Logger &get(LogLevel ll);
81 struct Loc
82 {
83 Loc(const char *file, int line) : file(file), line(line) {}
84 const char *file;
85 int line;
86 };
89
87
90 public:
91 Logger(std::ostream &stream, const char *prefix);
88 Logger(const char *prefix) : enabled(true), prefix(prefix)
89 {
90 assert(prefix);
91 }
92
92 virtual ~Logger() {};
93
93 virtual ~Logger() {};
94
94 template<typename ...Args> void
95 print(const char *func, const char *file, int line,
96 const char *format, const Args &...args)
95 void
96 print(const Loc &loc, const std::string &str)
97 {
97 {
98 std::stringstream ss;
99 ss << prefix << str;
100 if (str.length() && str.back() != '\n' && str.back() != '\r')
101 ss << std::endl;
98 if (!enabled)
99 return;
102 if (!enabled)
103 return;
104 log(loc, ss.str());
105 }
100
106
101 if (prefix)
102 stream << prefix << ": ";
103 ccprintf(stream, format, args...);
104
105 printEpilogue(func, file, line, format);
107 template<typename ...Args> void
108 print(const Loc &loc, const char *format, const Args &...args)
109 {
110 std::stringstream ss;
111 ccprintf(ss, format, args...);
112 print(loc, ss.str());
106 }
107
108 template<typename ...Args> void
113 }
114
115 template<typename ...Args> void
109 print(const char *func, const char *file, int line,
110 const std::string &format, const Args &...args)
116 print(const Loc &loc, const std::string &format, const Args &...args)
111 {
117 {
112 print(func, file, line, format.c_str(), args...);
118 print(loc, format.c_str(), args...);
113 }
114
119 }
120
115 protected:
116 virtual void printEpilogue(const char *func, const char *file, int line,
117 const char *format);
121 // This helper is necessary since noreturn isn't inherited by virtual
122 // functions, and gcc will get mad if a function calls panic and then
123 // doesn't return.
124 void exit_helper() M5_ATTR_NORETURN { exit(); ::abort(); }
118
125
119 public:
126 protected:
120 bool enabled;
127 bool enabled;
121 bool verbose;
122
128
123 protected:
124 std::ostream &stream;
129 virtual void log(const Loc &loc, std::string s) = 0;
130 virtual void exit() { /* Fall through to the abort in exit_helper. */ }
131
125 const char *prefix;
126};
127
132 const char *prefix;
133};
134
128#define exit_message(logger, code, ...) \
129 do { \
130 logger.print(__FUNCTION__, __FILE__, __LINE__, __VA_ARGS__); \
131 if (code < 0) \
132 ::abort(); \
133 else \
134 ::exit(code); \
135
136#define base_message(logger, ...) \
137 logger.print(::Logger::Loc(__FILE__, __LINE__), __VA_ARGS__)
138
139/*
140 * Only print the message the first time this expression is
141 * encountered. i.e. This doesn't check the string itself and
142 * prevent duplicate strings, this prevents the statement from
143 * happening more than once. So, even if the arguments change and that
144 * would have resulted in a different message thoes messages would be
145 * supressed.
146 */
147#define base_message_once(...) do { \
148 static bool once = false; \
149 if (!once) { \
150 base_message(__VA_ARGS__); \
151 once = true; \
152 } \
135 } while (0)
136
153 } while (0)
154
137//
138// This implements a cprintf based panic() function. panic() should
139// be called when something happens that should never ever happen
140// regardless of what the user does (i.e., an acutal m5 bug). panic()
141// calls abort which can dump core or enter the debugger.
142//
143//
144#define panic(...) exit_message(::Logger::get(::Logger::PANIC), -1, \
145 __VA_ARGS__)
155#define exit_message(logger, ...) \
156 do { \
157 base_message(logger, __VA_ARGS__); \
158 logger.exit_helper(); \
159 } while (0)
146
160
147//
148// This implements a cprintf based fatal() function. fatal() should
149// be called when the simulation cannot continue due to some condition
150// that is the user's fault (bad configuration, invalid arguments,
151// etc.) and not a simulator bug. fatal() calls abort() like
152// panic() does.
153//
154#define fatal(...) exit_message(::Logger::get(::Logger::FATAL), 1, \
155 __VA_ARGS__)
161/**
162 * This implements a cprintf based panic() function. panic() should
163 * be called when something happens that should never ever happen
164 * regardless of what the user does (i.e., an acutal m5 bug). panic()
165 * might call abort which can dump core or enter the debugger.
166 */
167#define panic(...) exit_message(::Logger::getPanic(), __VA_ARGS__)
156
157/**
168
169/**
170 * This implements a cprintf based fatal() function. fatal() should
171 * be called when the simulation cannot continue due to some condition
172 * that is the user's fault (bad configuration, invalid arguments,
173 * etc.) and not a simulator bug. fatal() might call exit, unlike panic().
174 */
175#define fatal(...) exit_message(::Logger::getFatal(), __VA_ARGS__)
176
177/**
158 * Conditional panic macro that checks the supplied condition and only panics
159 * if the condition is true and allows the programmer to specify diagnostic
160 * printout. Useful to replace if + panic, or if + print + assert, etc.
161 *
162 * @param cond Condition that is checked; if true -> panic
163 * @param ... Printf-based format string with arguments, extends printout.
164 */
165#define panic_if(cond, ...) \

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184 do { \
185 if ((cond)) { \
186 fatal("fatal condition " # cond " occurred: %s", \
187 csprintf(__VA_ARGS__)); \
188 } \
189 } while (0)
190
191
178 * Conditional panic macro that checks the supplied condition and only panics
179 * if the condition is true and allows the programmer to specify diagnostic
180 * printout. Useful to replace if + panic, or if + print + assert, etc.
181 *
182 * @param cond Condition that is checked; if true -> panic
183 * @param ... Printf-based format string with arguments, extends printout.
184 */
185#define panic_if(cond, ...) \

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204 do { \
205 if ((cond)) { \
206 fatal("fatal condition " # cond " occurred: %s", \
207 csprintf(__VA_ARGS__)); \
208 } \
209 } while (0)
210
211
192#define base_message(logger, ...) \
193 logger.print(__FUNCTION__, __FILE__, __LINE__, __VA_ARGS__)
212#define warn(...) base_message(::Logger::getWarn(), __VA_ARGS__)
213#define inform(...) base_message(::Logger::getInfo(), __VA_ARGS__)
214#define hack(...) base_message(::Logger::getHack(), __VA_ARGS__)
194
215
195// Only print the message the first time this expression is
196// encountered. i.e. This doesn't check the string itself and
197// prevent duplicate strings, this prevents the statement from
198// happening more than once. So, even if the arguments change and that
199// would have resulted in a different message thoes messages would be
200// supressed.
201#define base_message_once(...) do { \
202 static bool once = false; \
203 if (!once) { \
204 base_message(__VA_ARGS__); \
205 once = true; \
206 } \
207 } while (0)
216#define warn_once(...) base_message_once(::Logger::getWarn(), __VA_ARGS__)
217#define inform_once(...) base_message_once(::Logger::getInfo(), __VA_ARGS__)
218#define hack_once(...) base_message_once(::Logger::getHack(), __VA_ARGS__)
208
219
209
210#define warn(...) \
211 base_message(::Logger::get(::Logger::WARN), __VA_ARGS__)
212#define inform(...) \
213 base_message(::Logger::get(::Logger::INFO), __VA_ARGS__)
214#define hack(...) \
215 base_message(::Logger::get(::Logger::HACK), __VA_ARGS__)
216
217#define warn_once(...) \
218 base_message_once(::Logger::get(::Logger::WARN), __VA_ARGS__)
219#define inform_once(...) \
220 base_message_once(::Logger::get(::Logger::INFO), __VA_ARGS__)
221#define hack_once(...) \
222 base_message_once(::Logger::get(::Logger::HACK), __VA_ARGS__)
223
224/**
225 * Conditional warning macro that checks the supplied condition and
226 * only prints a warning if the condition is true. Useful to replace
227 * if + warn.
228 *
229 * @param cond Condition that is checked; if true -> warn
230 * @param ... Printf-based format string with arguments, extends printout.
231 */

--- 25 unchanged lines hidden --- 		220/**
221 * Conditional warning macro that checks the supplied condition and
222 * only prints a warning if the condition is true. Useful to replace
223 * if + warn.
224 *
225 * @param cond Condition that is checked; if true -> warn
226 * @param ... Printf-based format string with arguments, extends printout.
227 */

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