process_types.hh revision 13182:9e030f636a8c
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 void throw_it(ExceptionWrapperBase &exc, bool inc_kids) override; 67 68 sc_core::sc_curr_proc_kind 69 procKind() const override 70 { 71 return sc_core::SC_THREAD_PROC_; 72 } 73 74 Fiber * 75 fiber() override 76 { 77 if (!ctx) 78 ctx = new Context(this, stackSize); 79 return ctx; 80 } 81 82 private: 83 class Context : public Fiber 84 { 85 public: 86 Context(Thread *thread, size_t size) : Fiber(size), thread(thread) {} 87 88 private: 89 Thread *thread; 90 91 void 92 main() override 93 { 94 thread->_needsStart = false; 95 try { 96 thread->run(); 97 } catch (...) { 98 thread->terminate(); 99 scheduler.throwToScMain(); 100 return; 101 } 102 thread->terminate(); 103 scheduler.yield(); 104 } 105 }; 106 friend class Context; 107 108 Context *ctx; 109}; 110 111class CThread : public Thread 112{ 113 public: 114 CThread(const char *name, ProcessFuncWrapper *func, bool internal=false) : 115 Thread(name, func, internal) 116 { 117 // We'll be in the initialization list now, but we shouldn't be. 118 popListNode(); 119 } 120 121 const char *kind() const override { return "sc_cthread_process"; } 122 123 sc_core::sc_curr_proc_kind 124 procKind() const override 125 { 126 return sc_core::SC_CTHREAD_PROC_; 127 } 128}; 129 130} // namespace sc_gem5 131 132#endif //__SYSTEMC_CORE_PROCESS_TYPES_HH__ 133