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/*
* Copyright (c) 2014, 2019, 2021 Arm Limited
* All rights reserved
*
* Copyright (c) 2001-2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __BASE_TRACE_HH__
#define __BASE_TRACE_HH__
#include <ostream>
#include <string>
#include <sstream>
#include "base/compiler.hh"
#include "base/cprintf.hh"
#include "base/debug.hh"
#include "base/logging.hh"
#include "base/match.hh"
#include "base/types.hh"
#include "sim/cur_tick.hh"
// Return the global context name "global". This function gets called when
// the DPRINTF macros are used in a context without a visible name() function
// @todo This should be moved to the gem5 namespace
const std::string &name();
namespace gem5
{
namespace trace {
/** Debug logging base class. Handles formatting and outputting
* time/name/message messages */
class Logger
{
protected:
/** Name match for objects to ignore */
ObjectMatch ignore;
/** Name match for objects to activate log */
ObjectMatch activate;
bool isEnabled(const std::string &name) const
{
if (name.empty()) // Enable the logger with a empty name.
return true;
bool ignore_match = ignore.match(name);
bool activate_match = activate.match(name);
if (ignore_match && activate_match)
panic("%s in both ignore and activate.\n", name);
if (ignore_match)
return false;
if (!activate.empty() && !activate_match)
return false;
return true;
}
public:
/** Log a single message */
template <typename ...Args>
void dprintf(Tick when, const std::string &name, const char *fmt,
const Args &...args)
{
dprintf_flag(when, name, "", fmt, args...);
}
/** Log a single message with a flag prefix. */
template <typename ...Args>
void dprintf_flag(Tick when, const std::string &name,
const std::string &flag,
const char *fmt, const Args &...args)
{
if (!isEnabled(name))
return;
std::ostringstream line;
ccprintf(line, fmt, args...);
logMessage(when, name, flag, line.str());
}
/** Dump a block of data of length len */
void dump(Tick when, const std::string &name,
const void *d, int len, const std::string &flag);
/** Log formatted message */
virtual void logMessage(Tick when, const std::string &name,
const std::string &flag, const std::string &message) = 0;
/** Return an ostream that can be used to send messages to
* the 'same place' as formatted logMessage messages. This
* can be implemented to use a logger's underlying ostream,
* to provide an ostream which formats the output in some
* way, or just set to one of std::cout, std::cerr */
virtual std::ostream &getOstream() = 0;
/** Set objects to ignore */
void setIgnore(ObjectMatch &ignore_) { ignore = ignore_; }
/** Add objects to ignore */
void addIgnore(const ObjectMatch &ignore_) { ignore.add(ignore_); }
/** Set objects to activate */
void setActivate(ObjectMatch &activate_) { activate = activate_; }
/** Add objects to activate */
void addActivate(const ObjectMatch &activate_) { activate.add(activate_); }
virtual ~Logger() { }
};
/** Logging wrapper for ostreams with the format:
* <when>: <name>: <message-body> */
class OstreamLogger : public Logger
{
protected:
std::ostream &stream;
public:
OstreamLogger(std::ostream &stream_) : stream(stream_)
{ }
void logMessage(Tick when, const std::string &name,
const std::string &flag, const std::string &message) override;
std::ostream &getOstream() override { return stream; }
};
/** Get the current global debug logger. This takes ownership of the given
* logger which should be allocated using 'new' */
Logger *getDebugLogger();
/** Get the ostream from the current global logger */
std::ostream &output();
/** Delete the current global logger and assign a new one */
void setDebugLogger(Logger *logger);
/** Enable/disable debug logging */
void enable();
void disable();
} // namespace trace
// This silly little class allows us to wrap a string in a functor
// object so that we can give a name() that DPRINTF will like
struct StringWrap
{
std::string str;
StringWrap(const std::string &s) : str(s) {}
const std::string &operator()() const { return str; }
};
/**
* DPRINTF is a debugging trace facility that allows one to
* selectively enable tracing statements. To use DPRINTF, there must
* be a function or functor called name() that returns a const
* std::string & in the current scope.
*
* If you desire that the automatic printing not occur, use DPRINTFR
* (R for raw)
*
* With DPRINTFV it is possible to pass a debug::SimpleFlag variable
* as first argument. Example:
*
* debug::Flag some_flag = debug::DMA;
* DPRINTFV(some_flag, ...);
*
* \def DDUMP(x, data, count)
* \def DPRINTF(x, ...)
* \def DPRINTFS(x, s, ...)
* \def DPRINTFR(x, ...)
* \def DPRINTFV(x, ...)
* \def DPRINTFN(...)
* \def DPRINTFNR(...)
* \def DPRINTF_UNCONDITIONAL(x, ...) (deprecated)
*
* @ingroup api_trace
* @{
*/
#define DDUMP(x, data, count) do { \
if (GEM5_UNLIKELY(TRACING_ON && ::gem5::debug::x)) \
::gem5::trace::getDebugLogger()->dump( \
::gem5::curTick(), name(), data, count, #x); \
} while (0)
#define DPRINTF(x, ...) do { \
if (GEM5_UNLIKELY(TRACING_ON && ::gem5::debug::x)) { \
::gem5::trace::getDebugLogger()->dprintf_flag( \
::gem5::curTick(), name(), #x, __VA_ARGS__); \
} \
} while (0)
#define DPRINTFS(x, s, ...) do { \
if (GEM5_UNLIKELY(TRACING_ON && ::gem5::debug::x)) { \
::gem5::trace::getDebugLogger()->dprintf_flag( \
::gem5::curTick(), (s)->name(), #x, __VA_ARGS__); \
} \
} while (0)
#define DPRINTFR(x, ...) do { \
if (GEM5_UNLIKELY(TRACING_ON && ::gem5::debug::x)) { \
::gem5::trace::getDebugLogger()->dprintf_flag( \
(::gem5::Tick)-1, std::string(), #x, __VA_ARGS__); \
} \
} while (0)
#define DPRINTFV(x, ...) do { \
if (GEM5_UNLIKELY(TRACING_ON && (x))) { \
::gem5::trace::getDebugLogger()->dprintf_flag( \
::gem5::curTick(), name(), x.name(), __VA_ARGS__); \
} \
} while (0)
#define DPRINTFN(...) do { \
if (TRACING_ON) { \
::gem5::trace::getDebugLogger()->dprintf( \
::gem5::curTick(), name(), __VA_ARGS__); \
} \
} while (0)
#define DPRINTFNR(...) do { \
if (TRACING_ON) { \
::gem5::trace::getDebugLogger()->dprintf( \
(::gem5::Tick)-1, "", __VA_ARGS__); \
} \
} while (0)
#define DPRINTF_UNCONDITIONAL(x, ...) \
GEM5_DEPRECATED_MACRO_STMT(DPRINTF_UNCONDITIONAL, \
do { \
if (TRACING_ON) { \
::gem5::trace::getDebugLogger()->dprintf_flag( \
::gem5::curTick(), name(), #x, __VA_ARGS__); \
} \
} while (0), \
"Use DPRINTFN or DPRINTF with a debug flag instead.")
/** @} */ // end of api_trace
} // namespace gem5
#endif // __BASE_TRACE_HH__