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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 <memory>
#include <vector>
#include "base/fiber.hh"
#include "systemc/core/list.hh"
#include "systemc/core/object.hh"
#include "systemc/core/sched_event.hh"
#include "systemc/core/sensitivity.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_core
{
class sc_join;
} // namespace sc_core
namespace sc_gem5
{
class ScHalt
{};
class Process : public ::sc_core::sc_process_b, public ListNode
{
public:
virtual ::sc_core::sc_curr_proc_kind procKind() const = 0;
bool needsStart() const { return _needsStart; }
void needsStart(bool ns) { _needsStart = ns; }
bool dynamic() const { return _dynamic; }
bool isUnwinding() const { return _isUnwinding; }
void isUnwinding(bool v) { _isUnwinding = v; }
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; }
void setStackSize(size_t size) { stackSize = size; }
void run();
void addStatic(StaticSensitivity *);
void setDynamic(DynamicSensitivity *);
void clearDynamic() { setDynamic(nullptr); }
ScEvent timeoutEvent;
void setTimeout(::sc_core::sc_time t);
void cancelTimeout();
void satisfySensitivity(Sensitivity *);
void ready();
virtual Fiber *fiber() { return Fiber::primaryFiber(); }
static Process *newest() { return _newest; }
void lastReport(::sc_core::sc_report *report);
::sc_core::sc_report *lastReport() const;
bool hasStaticSensitivities() { return !staticSensitivities.empty(); }
bool internal() { return _internal; }
bool timedOut() { return _timedOut; }
bool dontInitialize() { return _dontInitialize; }
void dontInitialize(bool di) { _dontInitialize = di; }
void joinWait(::sc_core::sc_join *join) { joinWaiters.push_back(join); }
protected:
void timeout();
Process(const char *name, ProcessFuncWrapper *func, bool internal=false);
static Process *_newest;
virtual ~Process()
{
popListNode();
delete func;
for (auto s: staticSensitivities) {
s->clear();
delete s;
}
clearDynamic();
}
::sc_core::sc_event _resetEvent;
::sc_core::sc_event _terminatedEvent;
ProcessFuncWrapper *func;
sc_core::sc_curr_proc_kind _procKind;
bool _internal;
// Needed to support the deprecated "timed_out" function.
bool _timedOut;
bool _dontInitialize;
bool _needsStart;
bool _dynamic;
bool _isUnwinding;
bool _terminated;
void terminate();
bool _suspended;
bool _suspendedReady;
bool _disabled;
bool _syncReset;
int refCount;
size_t stackSize;
StaticSensitivities staticSensitivities;
DynamicSensitivity *dynamicSensitivity;
std::unique_ptr<::sc_core::sc_report> _lastReport;
std::vector<::sc_core::sc_join *> joinWaiters;
};
} // namespace sc_gem5
#endif //__SYSTEMC_CORE_PROCESS_HH__
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