process_types.hh revision 13306:2196f4a8201f
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_TYPES_HH__ 31#define __SYSTEMC_CORE_PROCESS_TYPES_HH__ 32 33#include "systemc/core/process.hh" 34#include "systemc/core/scheduler.hh" 35 36namespace sc_gem5 37{ 38 39class Method : public Process 40{ 41 public: 42 Method(const char *name, ProcessFuncWrapper *func, bool internal=false) : 43 Process(name, func, internal) 44 {} 45 46 const char *kind() const override { return "sc_method_process"; } 47 48 sc_core::sc_curr_proc_kind 49 procKind() const override 50 { 51 return sc_core::SC_METHOD_PROC_; 52 } 53}; 54 55class Thread : public Process 56{ 57 public: 58 Thread(const char *name, ProcessFuncWrapper *func, bool internal=false) : 59 Process(name, func, internal), ctx(nullptr) 60 {} 61 62 ~Thread() { delete ctx; } 63 64 const char *kind() const override { return "sc_thread_process"; } 65 66 sc_core::sc_curr_proc_kind 67 procKind() const override 68 { 69 return sc_core::SC_THREAD_PROC_; 70 } 71 72 Fiber * 73 fiber() override 74 { 75 if (!ctx) 76 ctx = new Context(this, stackSize); 77 return ctx; 78 } 79 80 private: 81 class Context : public Fiber 82 { 83 public: 84 Context(Thread *thread, size_t size) : Fiber(size), thread(thread) {} 85 86 private: 87 Thread *thread; 88 89 void 90 main() override 91 { 92 thread->_needsStart = false; 93 try { 94 thread->run(); 95 } catch (...) { 96 thread->terminate(); 97 scheduler.throwToScMain(); 98 return; 99 } 100 thread->terminate(); 101 scheduler.yield(); 102 } 103 }; 104 friend class Context; 105 106 Context *ctx; 107}; 108 109class CThread : public Thread 110{ 111 public: 112 CThread(const char *name, ProcessFuncWrapper *func, bool internal=false) : 113 Thread(name, func, internal) 114 { 115 // We'll be in the initialization list now, but we shouldn't be. 116 popListNode(); 117 } 118 119 const char *kind() const override { return "sc_cthread_process"; } 120 121 sc_core::sc_curr_proc_kind 122 procKind() const override 123 { 124 return sc_core::SC_CTHREAD_PROC_; 125 } 126}; 127 128} // namespace sc_gem5 129 130#endif //__SYSTEMC_CORE_PROCESS_TYPES_HH__ 131