simulate.cc (10756:f9c0692f73ec) simulate.cc (10762:fe0972727902)
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * Copyright (c) 2013 Advanced Micro Devices, Inc.
4 * Copyright (c) 2013 Mark D. Hill and David A. Wood
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are

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66thread_loop(EventQueue *queue)
67{
68 while (true) {
69 threadBarrier->wait();
70 doSimLoop(queue);
71 }
72}
73
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * Copyright (c) 2013 Advanced Micro Devices, Inc.
4 * Copyright (c) 2013 Mark D. Hill and David A. Wood
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are

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66thread_loop(EventQueue *queue)
67{
68 while (true) {
69 threadBarrier->wait();
70 doSimLoop(queue);
71 }
72}
73
74GlobalEvent*
75getLimitEvent(void) {
76 static GlobalSimLoopExitEvent
77 simulate_limit_event(mainEventQueue[0]->getCurTick(),
78 "simulate() limit reached", 0);
79 return &simulate_limit_event;
80}
74GlobalSimLoopExitEvent *simulate_limit_event = nullptr;
81
82/** Simulate for num_cycles additional cycles. If num_cycles is -1
83 * (the default), do not limit simulation; some other event must
84 * terminate the loop. Exported to Python via SWIG.
85 * @return The SimLoopExitEvent that caused the loop to exit.
86 */
87GlobalSimLoopExitEvent *
88simulate(Tick num_cycles)

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99 // the main thread (the one we're currently running on)
100 // handles queue 0, so we only need to allocate new threads
101 // for queues 1..N-1. We'll call these the "subordinate" threads.
102 for (uint32_t i = 1; i < numMainEventQueues; i++) {
103 threads.push_back(new std::thread(thread_loop, mainEventQueue[i]));
104 }
105
106 threads_initialized = true;
75
76/** Simulate for num_cycles additional cycles. If num_cycles is -1
77 * (the default), do not limit simulation; some other event must
78 * terminate the loop. Exported to Python via SWIG.
79 * @return The SimLoopExitEvent that caused the loop to exit.
80 */
81GlobalSimLoopExitEvent *
82simulate(Tick num_cycles)

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93 // the main thread (the one we're currently running on)
94 // handles queue 0, so we only need to allocate new threads
95 // for queues 1..N-1. We'll call these the "subordinate" threads.
96 for (uint32_t i = 1; i < numMainEventQueues; i++) {
97 threads.push_back(new std::thread(thread_loop, mainEventQueue[i]));
98 }
99
100 threads_initialized = true;
101 simulate_limit_event =
102 new GlobalSimLoopExitEvent(mainEventQueue[0]->getCurTick(),
103 "simulate() limit reached", 0);
107 }
108
109 inform("Entering event queue @ %d. Starting simulation...\n", curTick());
110
111 if (num_cycles < MaxTick - curTick())
112 num_cycles = curTick() + num_cycles;
113 else // counter would roll over or be set to MaxTick anyhow
114 num_cycles = MaxTick;
115
104 }
105
106 inform("Entering event queue @ %d. Starting simulation...\n", curTick());
107
108 if (num_cycles < MaxTick - curTick())
109 num_cycles = curTick() + num_cycles;
110 else // counter would roll over or be set to MaxTick anyhow
111 num_cycles = MaxTick;
112
116 getLimitEvent()->reschedule(num_cycles);
113 simulate_limit_event->reschedule(num_cycles);
117
118 GlobalSyncEvent *quantum_event = NULL;
119 if (numMainEventQueues > 1) {
120 if (simQuantum == 0) {
121 fatal("Quantum for multi-eventq simulation not specified");
122 }
123
124 quantum_event = new GlobalSyncEvent(curTick() + simQuantum, simQuantum,

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115 GlobalSyncEvent *quantum_event = NULL;
116 if (numMainEventQueues > 1) {
117 if (simQuantum == 0) {
118 fatal("Quantum for multi-eventq simulation not specified");
119 }
120
121 quantum_event = new GlobalSyncEvent(curTick() + simQuantum, simQuantum,

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