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/*
* Copyright 2018 Google, Inc.
*
* 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.
*
* Authors: Gabe Black
*/
#ifndef __SYSTEMC_CORE_PROCESS_HH__
#define __SYSTEMC_CORE_PROCESS_HH__
#include <functional>
#include "base/fiber.hh"
#include "systemc/core/object.hh"
#include "systemc/ext/core/sc_event.hh"
#include "systemc/ext/core/sc_module.hh"
#include "systemc/ext/core/sc_process_handle.hh"
namespace sc_gem5
{
class Process : public ::sc_core::sc_object
{
public:
virtual ::sc_core::sc_curr_proc_kind procKind() const = 0;
bool dynamic() const { return _dynamic; }
bool isUnwinding() const { return _isUnwinding; }
bool terminated() const { return _terminated; }
void forEachKid(const std::function<void(Process *)> &work);
bool suspended() const { return _suspended; }
bool disabled() const { return _disabled; }
void suspend(bool inc_kids);
void resume(bool inc_kids);
void disable(bool inc_kids);
void enable(bool inc_kids);
void kill(bool inc_kids);
void reset(bool inc_kids);
virtual void throw_it(ExceptionWrapperBase &exc, bool inc_kids);
void injectException(ExceptionWrapperBase &exc);
ExceptionWrapperBase *excWrapper;
void syncResetOn(bool inc_kids);
void syncResetOff(bool inc_kids);
void incref() { refCount++; }
void decref() { refCount--; }
const ::sc_core::sc_event &resetEvent() { return _resetEvent; }
const ::sc_core::sc_event &terminatedEvent() { return _terminatedEvent; }
protected:
Process(const char *name, ProcessFuncWrapper *func, bool _dynamic) :
::sc_core::sc_object(name), func(func), _dynamic(_dynamic),
_isUnwinding(false), _terminated(false), _suspended(false),
_disabled(false), _syncReset(false), refCount(0)
{}
virtual ~Process() { delete func; }
::sc_core::sc_event _resetEvent;
::sc_core::sc_event _terminatedEvent;
ProcessFuncWrapper *func;
sc_core::sc_curr_proc_kind _procKind;
bool _dynamic;
bool _isUnwinding;
bool _terminated;
bool _suspended;
bool _disabled;
bool _syncReset;
int refCount;
};
class Method : public Process
{
public:
Method(const char *name, ProcessFuncWrapper *func, bool _dynamic=false) :
Process(name, func, _dynamic)
{}
const char *kind() const override { return "sc_method_process"; }
sc_core::sc_curr_proc_kind
procKind() const override
{
return sc_core::SC_METHOD_PROC_;
}
};
class Thread : public Process
{
public:
Thread(const char *name, ProcessFuncWrapper *func, bool _dynamic=false) :
Process(name, func, _dynamic)
{}
const char *kind() const override { return "sc_thread_process"; }
void throw_it(ExceptionWrapperBase &exc, bool inc_kids) override;
sc_core::sc_curr_proc_kind
procKind() const override
{
return sc_core::SC_THREAD_PROC_;
}
};
class CThread : public Thread
{
public:
CThread(const char *name, ProcessFuncWrapper *func, bool _dynamic=false) :
Thread(name, func, _dynamic)
{}
const char *kind() const override { return "sc_cthread_process"; }
sc_core::sc_curr_proc_kind
procKind() const override
{
return sc_core::SC_CTHREAD_PROC_;
}
};
} // namespace sc_gem5
#endif //__SYSTEMC_CORE_PROCESS_HH__
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