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/*
* Copyright (c) 2020 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* Copyright (c) 2010 The Hewlett-Packard Development Company
* 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_DEBUG_HH__
#define __BASE_DEBUG_HH__
#include <initializer_list>
#include <map>
#include <string>
#include <vector>
namespace Debug {
void breakpoint();
class Flag
{
protected:
static bool _globalEnable; // whether debug tracings are enabled
const char *_name;
const char *_desc;
virtual void sync() { }
public:
Flag(const char *name, const char *desc);
virtual ~Flag();
std::string name() const { return _name; }
std::string desc() const { return _desc; }
virtual void enable() = 0;
virtual void disable() = 0;
virtual bool enabled() const = 0;
operator bool() const { return enabled(); }
static void globalEnable();
static void globalDisable();
};
class SimpleFlag : public Flag
{
protected:
/** Whether this flag changes debug formatting. */
const bool _isFormat = false;
bool _tracing = false; // tracing is enabled and flag is on
bool _enabled = false; // flag enablement status
void sync() override { _tracing = _globalEnable && _enabled; }
public:
SimpleFlag(const char *name, const char *desc, bool is_format=false)
: Flag(name, desc), _isFormat(is_format)
{}
bool enabled() const override { return _tracing; }
void enable() override { _enabled = true; sync(); }
void disable() override { _enabled = false; sync(); }
/**
* Checks whether this flag is a conventional debug flag, or a flag that
* modifies the way debug information is printed.
*
* @return True if this flag is a debug-formatting flag.
*/
bool isFormat() const { return _isFormat; }
};
class CompoundFlag : public Flag
{
protected:
std::vector<Flag *> _kids;
public:
template<typename... Args>
CompoundFlag(const char *name, const char *desc,
std::initializer_list<Flag *> flags)
: Flag(name, desc),
_kids(flags)
{
}
const std::vector<Flag *> &kids() const { return _kids; }
void enable() override;
void disable() override;
bool enabled() const override;
};
typedef std::map<std::string, Flag *> FlagsMap;
FlagsMap &allFlags();
Flag *findFlag(const std::string &name);
bool changeFlag(const char *s, bool value);
} // namespace Debug
void setDebugFlag(const char *string);
void clearDebugFlag(const char *string);
void dumpDebugFlags();
/**
* \def DTRACE(x)
*
* @ingroup api_trace
* @{
*/
#if TRACING_ON
# define DTRACE(x) (Debug::x)
#else // !TRACING_ON
# define DTRACE(x) (false)
#endif // TRACING_ON
/** @} */ // end of api_trace
#endif // __BASE_DEBUG_HH__