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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_TYPES_HH__
#define __SYSTEMC_CORE_PROCESS_TYPES_HH__
#include "systemc/core/process.hh"
#include "systemc/core/scheduler.hh"
namespace sc_gem5
{
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), ctx(nullptr)
{}
~Thread() { delete ctx; }
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_;
}
Fiber *
fiber() override
{
if (!ctx)
ctx = new Context(this, stackSize);
return ctx;
}
private:
class Context : public Fiber
{
public:
Context(Thread *thread, size_t size) : Fiber(size), thread(thread) {}
private:
Thread *thread;
void
main() override
{
thread->_needsStart = false;
thread->run();
thread->terminate();
scheduler.yield();
}
};
friend class Context;
Context *ctx;
};
class CThread : public Thread
{
public:
CThread(const char *name, ProcessFuncWrapper *func, bool _dynamic=false) :
Thread(name, func, _dynamic)
{
// We'll be in the initialization list now, but we shouldn't be.
popListNode();
}
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_TYPES_HH__
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