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__