source: src/tests/sched-int-wait.c@ bc934cdf

#include <fstream>
#include <kernel>
#include <monitor>
#include <stdlib>
#include <thread>

monitor global_t {};

global_t globalA;
global_t globalB;
global_t globalC;

condition condAB, condAC, condBC, condABC;

thread Signaler {
        int signals[4];
};

void ?{}( Signaler * this ){
        this->signals[0] = 0;
        this->signals[1] = 0;
        this->signals[2] = 0;
        this->signals[3] = 0;
}

thread WaiterAB {};
thread WaiterAC {};
thread WaiterBC {};
thread WaiterABC{};

volatile bool done;

//----------------------------------------------------------------------------------------------------
// Tools
void signal( condition * cond, global_t * mutex a, global_t * mutex b ) {
        signal( cond );
}

void signal( condition * cond, global_t * mutex a, global_t * mutex b, global_t * mutex c ) {
        signal( cond );
}

void wait( condition * cond, global_t * mutex a, global_t * mutex b ) {
        wait( cond );
}

void wait( condition * cond, global_t * mutex a, global_t * mutex b, global_t * mutex c ) {
        wait( cond );
}

//----------------------------------------------------------------------------------------------------
// Signaler
void main( Signaler* this ) {

        while( true ) {
                int action = (unsigned)rand48() % 4;
                bool finished = true;

                for(int i = 0; i < 4; i++) {
                        if( this->signals[action] < 10_000 ) {
                                finished = false;
                                break;
                        }
                        else {
                                action = (action + 1) % 4;
                        }
                }

                this->signals[action]++;
                if( finished ) break;

                //sout | action | this->signals[0] | this->signals[1] | this->signals[2] | this->signals[3] | endl;

                switch( action ) {
                        case 0: 
                                signal( &condABC, &globalA, &globalB, &globalC );
                                break;
                        case 1: 
                                signal( &condAB , &globalA, &globalB );
                                break;
                        case 2: 
                                signal( &condBC , &globalB, &globalC );
                                break;
                        case 3: 
                                signal( &condAC , &globalA, &globalC );
                                break;
                        default:
                                sout | "Something went wrong" | endl;
                                abort();
                }
        }       
}

//----------------------------------------------------------------------------------------------------
// Waiter ABC
void main( WaiterABC* this ) {
        while( !done ) {
                wait( &condABC, &globalA, &globalB, &globalC );
        }
}

//----------------------------------------------------------------------------------------------------
// Waiter AB
void main( WaiterAB* this ) {
        while( !done ) {
                wait( &condAB , &globalA, &globalB );
        }
}

//----------------------------------------------------------------------------------------------------
// Waiter AC
void main( WaiterAC* this ) {
        while( !done ) {
                wait( &condAC , &globalA, &globalC );
        }
}

//----------------------------------------------------------------------------------------------------
// Waiter BC
void main( WaiterBC* this ) {
        while( !done ) {
                wait( &condBC , &globalB, &globalC );
        }
}

//----------------------------------------------------------------------------------------------------
// Main
int main(int argc, char* argv[]) {
        done = false;
        processor p;
        {
                WaiterABC a;
                WaiterAB  b;
                WaiterBC  c;
                WaiterAC  d;
                {
                        Signaler  e;
                }
                done = true;
                signal( &condABC, &globalA, &globalB, &globalC );
                signal( &condAB , &globalA, &globalB );
                signal( &condBC , &globalB, &globalC );
                signal( &condAC , &globalA, &globalC );
        }
}