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  Accellera licenses this file to you under the Apache License, Version 2.0
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// method_suspends_itself.cpp -- test for 
//
//  Original Author: John Aynsley, Doulos, Inc.
//
// MODIFICATION LOG - modifiers, enter your name, affiliation, date and
//
// $Log: method_suspends_itself.cpp,v $
// Revision 1.3  2011/05/08 19:18:46  acg
//  Andy Goodrich: remove extraneous + prefixes from git diff.
//

// Method process uses suspends, resumes, disables, and enables itself

#define SC_INCLUDE_DYNAMIC_PROCESSES

#include <systemc>

using namespace sc_core;
using std::cout;
using std::endl;

struct Top: sc_module
{
  Top(sc_module_name _name)
  {
    SC_THREAD(ticker);
    SC_THREAD(calling);

    SC_METHOD(target);
      sensitive << ev;
      dont_initialize();
      t = sc_get_current_process_handle();

    suspend_target = false;
    resume_target  = false;
    disable_target = false;
    enable_target  = false;
    dynamic_sensitivity = false;
    f0 = f1 = f2 = f3 = f4 = f5 = f6 = f7 = f8 = f9 = 0;
    f10 = f11 = f12 = f13 = f14 = f15 = f16 = f17 = f18 = f19 = 0;
    f20 = f21 = f22 = f23 = f24 = f25 = f26 = f27 = f28 = f29 = 0;
  }
  
  sc_process_handle t;
  sc_event ev, ev2;
  bool suspend_target;
  bool resume_target;
  bool disable_target;
  bool enable_target;
  bool dynamic_sensitivity;
  int  count;
  int f0, f1, f2, f3, f4, f5, f6, f7, f8, f9;
  int f10, f11, f12, f13, f14, f15, f16, f17, f18, f19;
  int f20, f21, f22, f23, f24, f25, f26, f27, f28, f29;

  void ticker()
  {
    for (;;)
    {
      wait(10, SC_NS);
      ev.notify();
    }
  }
   
  void calling()
  {
    count = 1;
    wait(15, SC_NS);
    // Target runs at 10 NS
    
    count = 2;
    suspend_target = true;
    wait(10, SC_NS);
    // Target runs at 20 NS and suspends itself
    
    count = 3;
    suspend_target = false;
    wait(10, SC_NS);
    // Target does not run at 30 NS
    
    count = 4;
    t.resume();
    // Target runs at 35 NS
    
    wait(10, SC_NS);
    // Target runs at 40 NS  

    count = 6;
    suspend_target = true;
    resume_target = true;
    wait(10, SC_NS);
    // Target runs at 50 NS

    count = 7;
    resume_target = true;
    wait(10, SC_NS);
    // Double resume at 60 NS    
    
    count = 8;
    suspend_target = true;
    resume_target = false;
    wait(10, SC_NS);
    // Target runs at 70 NS
    
    count = 9;
    wait(10, SC_NS);
    // Double suspend
    // Target does not run at 80 NS
    
    count = 10;
    suspend_target = false;
    resume_target = false;
    t.resume();
    // Target runs at 85 NS
    
    wait(10, SC_NS);
    // Target runs at 90 NS
    sc_assert( count == 11 );
    
    count = 12;
    t.suspend();
    wait(10, SC_NS);
    // Target does not run at 100 NS
    
    count = 13;
    t.resume();
    // Target runs at 105 NS
    
    wait(10, SC_NS);
    // Target runs at 110 NS
    sc_assert( count == 14 );
    
    count = 15;
    t.disable();
    wait(10, SC_NS);
    // Target does not run at 120 NS
    
    count = 16;
    wait(10, SC_NS);
    // Target does not run at 130 NS
    
    count = 17;
    t.disable();
    // Double disable
    wait(10, SC_NS);
    // Target does not run at 140 NS
    
    count = 18;
    t.enable();
    wait(10, SC_NS);
    // Target runs at 150 NS
    
    count = 19;
    t.enable();
    // Double enable
    wait(10, SC_NS);
    // Target runs at 160 NS

    count = 20;
    disable_target = true;
    wait(10, SC_NS);
    // Target runs at 170 and disables itself
    
    count = 21;
    disable_target = false;
    wait(10, SC_NS);
    // Target does not run at 180
    
    count = 22;
    enable_target = true;
    wait(10, SC_NS);
    // Target does not run at 190 
    
    count = 23;
    wait(10, SC_NS);
    // Failed to enable it itself, so still does not run at 200
    
    count = 24;
    enable_target = false;
    t.enable();
    wait(10, SC_NS);
    // Target runs at 210
    
    count = 25;
    disable_target = true;
    enable_target = true;
    wait(10, SC_NS);
    // Target runs at 220 and calls disable -> enable
    
    count = 26;
    disable_target = false;
    enable_target = false;
    wait(10, SC_NS);
    // Target runs at 230
    
    count = 27;
    t.suspend();
    wait(10, SC_NS);
    // Target does not run at 240
    
    count = 28;
    t.enable();
    wait(10, SC_NS);
    // Has no effect - still suspended at 250

    count = 29;
    t.disable();
    wait(10, SC_NS);
    // Both disabled and suspended at 260

    count = 30;
    t.enable();
    wait(10, SC_NS);
    // Enabled but still suspended
    
    count = 31;
    t.resume();
    // Target resumed at 275 NS
    wait(SC_ZERO_TIME);
    
    count = 311;
    wait(10, SC_NS);
    
    count = 32;
    t.disable();
    wait(10, SC_NS);
    // Disabled at 290 NS
    
    count = 33;
    t.resume();
    wait(10, SC_NS);
    // Still disabled at 300 NS
        
    count = 34;
    t.suspend();
    wait(10, SC_NS);
    // Both disabled and suspended at 310
    
    count = 35;
    t.enable();
    wait(10, SC_NS);
    // Remains suspended at 320
    
    count = 36;
    t.resume();
    wait(10, SC_NS);
    // Resumed at 325 NS and runs at 330
    sc_assert( count == 37 );
    
    count = 38;
    suspend_target = true;
    resume_target = true;
    disable_target = true;
    enable_target = true;
    wait(10, SC_NS);
    // Runs at 340
    
    count = 39;
    suspend_target = true;
    resume_target = false;
    disable_target = true;
    enable_target = true;
    wait(10, SC_NS);
    // Runs at 350, when it suspends

    count = 40;
    suspend_target = false;
    wait(10, SC_NS);
    // Suspended at 360
    
    count = 41;
    t.resume();
    wait(10, SC_NS);
    // Runs at 365 and 370
    sc_assert( count == 42 );
    
    sc_assert( t.valid() );
    sc_assert( t.terminated() == false );
    sc_assert( t.dynamic() == false );
    sc_assert( t.get_parent_object() == this );
    sc_assert( t.get_process_object() != 0 );
    
    count = 43;
    t.reset();
    wait(SC_ZERO_TIME);

    count = 44;
    dynamic_sensitivity = true;
    wait(10, SC_NS);
    // Runs at 380
    
    count = 45;
    ev2.notify();
    wait(1, SC_NS);
        
    count = 46;
    ev2.notify();
    wait(sc_time(400, SC_NS) - sc_time_stamp());
        
    count = 47;
    dynamic_sensitivity = false;
    t.sync_reset_on(); // Still dynamically sensitive to ev2
    ev2.notify(); // Clears dynamic sensitivity, restores static sensitivity
    
    count = 48;
    wait(10, SC_NS);
    
    count = 49;
    t.kill();
 
    if (t.valid())   
      sc_assert( t.terminated() );
    
    sc_stop();
  }

  void target()
  {
    //cout << "Target called at " << sc_time_stamp() << " count = " << count << endl;
    switch (count)
    {
    case 1: sc_assert( sc_time_stamp() == sc_time(10, SC_NS) ); f0=1; break;
    case 2: sc_assert( sc_time_stamp() == sc_time(20, SC_NS) ); f1=1; break;
    case 4: sc_assert( sc_time_stamp() == sc_time(35, SC_NS) ); count = 5; f2=1; break;
    case 5: sc_assert( sc_time_stamp() == sc_time(40, SC_NS) ); f3=1; break;
    case 6: sc_assert( sc_time_stamp() == sc_time(50, SC_NS) ); f4=1; break;
    case 7: sc_assert( sc_time_stamp() == sc_time(60, SC_NS) ); f5=1; break;
    case 8: sc_assert( sc_time_stamp() == sc_time(70, SC_NS) ); f6=1; break;
    case 10: sc_assert( sc_time_stamp() == sc_time(85, SC_NS) ); count = 11; f7=1; break;
    case 11: sc_assert( sc_time_stamp() == sc_time(90, SC_NS) ); f8=1; break;
    case 13: sc_assert( sc_time_stamp() == sc_time(105, SC_NS) ); count = 14; f9=1; break;
    case 14: sc_assert( sc_time_stamp() == sc_time(110, SC_NS) ); f10=1; break;
    case 18: sc_assert( sc_time_stamp() == sc_time(150, SC_NS) ); f11=1; break;
    case 19: sc_assert( sc_time_stamp() == sc_time(160, SC_NS) ); f12=1; break;
    case 20: sc_assert( sc_time_stamp() == sc_time(170, SC_NS) ); f13=1; break;
    case 24: sc_assert( sc_time_stamp() == sc_time(210, SC_NS) ); f14=1; break;
    case 25: sc_assert( sc_time_stamp() == sc_time(220, SC_NS) ); f15=1; break;
    case 26: sc_assert( sc_time_stamp() == sc_time(230, SC_NS) ); f16=1; break;
    case 31: sc_assert( sc_time_stamp() == sc_time(275, SC_NS) ); f17=1; break;
    case 311:sc_assert( sc_time_stamp() == sc_time(280, SC_NS) ); f18=1; break;
    case 36: sc_assert( sc_time_stamp() == sc_time(325, SC_NS) ); count = 37; f19=1; break;
    case 37: sc_assert( sc_time_stamp() == sc_time(330, SC_NS) ); f20=1; break;
    case 38: sc_assert( sc_time_stamp() == sc_time(340, SC_NS) ); f21=1; break;
    case 39: sc_assert( sc_time_stamp() == sc_time(350, SC_NS) ); f22=1; break;
    case 41: sc_assert( sc_time_stamp() == sc_time(365, SC_NS) ); count = 42; f23=1; break;
    case 42: sc_assert( sc_time_stamp() == sc_time(370, SC_NS) ); f24=1; break;
    case 43: sc_assert( sc_time_stamp() == sc_time(375, SC_NS) ); f29=1; break; ////////
    case 44: sc_assert( sc_time_stamp() == sc_time(380, SC_NS) ); f25=1; break;
    case 45: sc_assert( sc_time_stamp() == sc_time(385, SC_NS) ); f26=1; break;
    case 46: sc_assert( sc_time_stamp() == sc_time(386, SC_NS) ); f27=1; break;
    case 48: sc_assert( sc_time_stamp() == sc_time(400, SC_NS) ); f28=1; break;
    default: sc_assert( false ); break;
    }
    
    if (suspend_target)
      t.suspend();
    if (resume_target)
      t.resume();
    if (disable_target)
      t.disable();
    if (enable_target)
      t.enable();
    if (dynamic_sensitivity)
      next_trigger(ev2);
  }
  
  SC_HAS_PROCESS(Top);
};

int sc_main(int argc, char* argv[])
{
  Top top("top");
  
  sc_start();

  sc_assert( top.f0 );
  sc_assert( top.f1 );
  sc_assert( top.f2 );
  sc_assert( top.f3 );
  sc_assert( top.f4 );
  sc_assert( top.f5 );
  sc_assert( top.f6 );
  sc_assert( top.f7 );
  sc_assert( top.f8 );
  sc_assert( top.f9 );
  sc_assert( top.f10 );
  sc_assert( top.f11 );
  sc_assert( top.f12 );
  sc_assert( top.f13 );
  sc_assert( top.f14 );
  sc_assert( top.f15 );
  sc_assert( top.f16 );
  sc_assert( top.f17 );
  sc_assert( top.f18 );
  sc_assert( top.f19 );
  sc_assert( top.f20 );
  sc_assert( top.f21 );
  sc_assert( top.f22 );
  sc_assert( top.f23 );
  sc_assert( top.f24 );
  sc_assert( top.f25 );
  sc_assert( top.f26 );
  sc_assert( top.f27 );
  sc_assert( top.f28 );
  sc_assert( top.f29 );

  cout << endl << "Success" << endl;
  return 0;
}