process.hh revision 12953:ddfd5e4643a9 
1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#ifndef __SYSTEMC_CORE_PROCESS_HH__
31#define __SYSTEMC_CORE_PROCESS_HH__
32
33#include <functional>
34
35#include "base/fiber.hh"
36#include "systemc/core/list.hh"
37#include "systemc/core/object.hh"
38#include "systemc/ext/core/sc_event.hh"
39#include "systemc/ext/core/sc_module.hh"
40#include "systemc/ext/core/sc_process_handle.hh"
41
42namespace sc_gem5
43{
44
45class Process : public ::sc_core::sc_object, public ListNode
46{
47  public:
48    virtual ::sc_core::sc_curr_proc_kind procKind() const = 0;
49    bool running() const { return _running; }
50    bool dynamic() const { return _dynamic; }
51    bool isUnwinding() const { return _isUnwinding; }
52    bool terminated() const { return _terminated; }
53
54    void forEachKid(const std::function<void(Process *)> &work);
55
56    bool suspended() const { return _suspended; }
57    bool disabled() const { return _disabled; }
58
59    void suspend(bool inc_kids);
60    void resume(bool inc_kids);
61    void disable(bool inc_kids);
62    void enable(bool inc_kids);
63
64    void kill(bool inc_kids);
65    void reset(bool inc_kids);
66    virtual void throw_it(ExceptionWrapperBase &exc, bool inc_kids);
67
68    void injectException(ExceptionWrapperBase &exc);
69    ExceptionWrapperBase *excWrapper;
70
71    void syncResetOn(bool inc_kids);
72    void syncResetOff(bool inc_kids);
73
74    void incref() { refCount++; }
75    void decref() { refCount--; }
76
77    const ::sc_core::sc_event &resetEvent() { return _resetEvent; }
78    const ::sc_core::sc_event &terminatedEvent() { return _terminatedEvent; }
79
80    // This should only be called before initialization.
81    void dontInitialize() { popListNode(); }
82
83    void setStackSize(size_t size) { stackSize = size; }
84
85    void run();
86
87    virtual Fiber *fiber() { return Fiber::primaryFiber(); }
88
89    static Process *newest() { return _newest; }
90
91  protected:
92    Process(const char *name, ProcessFuncWrapper *func, bool _dynamic);
93
94    static Process *_newest;
95
96    virtual ~Process() { delete func; }
97
98    ::sc_core::sc_event _resetEvent;
99    ::sc_core::sc_event _terminatedEvent;
100
101    ProcessFuncWrapper *func;
102    sc_core::sc_curr_proc_kind _procKind;
103    bool _running;
104    bool _dynamic;
105    bool _isUnwinding;
106    bool _terminated;
107
108    bool _suspended;
109    bool _disabled;
110
111    bool _syncReset;
112
113    int refCount;
114
115    size_t stackSize;
116};
117
118} // namespace sc_gem5
119
120#endif  //__SYSTEMC_CORE_PROCESS_HH__
121