diff options
author | Gabe Black <gabeblack@google.com> | 2018-06-29 16:46:52 -0700 |
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committer | Gabe Black <gabeblack@google.com> | 2018-09-05 06:02:51 +0000 |
commit | 4bd389c9d0370d67464c2a508381abe326de3bdf (patch) | |
tree | 57fb22c26e1df3c0ebe49d406b89f6940217baa4 /src/systemc/core/process.hh | |
parent | aaf0c47c972d3811314db93f0fe1ababf4c408f1 (diff) | |
download | gem5-4bd389c9d0370d67464c2a508381abe326de3bdf.tar.xz |
systemc: Fill out sc_process_handle and create Process classes.
The sc_process_handle class now primarily delegates to a Process object
it points at. The Process object does book keeping as far as its
internal state, but doesn't yet have a way to run its target function
or to schedule itself or inject exceptions into its context of
execution.
Change-Id: I98389778abe29aa26e3e3a91bf02e6721acc8a9c
Reviewed-on: https://gem5-review.googlesource.com/11613
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
Diffstat (limited to 'src/systemc/core/process.hh')
-rw-r--r-- | src/systemc/core/process.hh | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/systemc/core/process.hh b/src/systemc/core/process.hh new file mode 100644 index 000000000..07ef97c5e --- /dev/null +++ b/src/systemc/core/process.hh @@ -0,0 +1,156 @@ +/* + * 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__ |