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Posted to dev@stdcxx.apache.org by Martin Sebor <se...@roguewave.com> on 2007/11/14 18:58:06 UTC
Re: svn commit: r594966 - in /incubator/stdcxx/branches/4.2.x/examples/tutorial:
icecream.cpp out/icecream.out
faridz@apache.org wrote:
> Author: faridz
> Date: Wed Nov 14 09:34:27 2007
> New Revision: 594966
Btw., for strict const-correctness the eventComparator operator
should be a const member function.
Martin
>
> URL: http://svn.apache.org/viewvc?rev=594966&view=rev
> Log:
> 2007-11-14 Farid Zaripov <fa...@epam.com>
>
> STDCXX-661
> * tutorial/icecream.cpp (class event): Removed unused operator>().
> (eventComparator): Defined as separate struct instead of typedef
> std::greater<>.
> * tutorial/out/icecream.out: Updated .out file to reflect the
> changes above.
>
> Modified:
> incubator/stdcxx/branches/4.2.x/examples/tutorial/icecream.cpp
> incubator/stdcxx/branches/4.2.x/examples/tutorial/out/icecream.out
>
> Modified: incubator/stdcxx/branches/4.2.x/examples/tutorial/icecream.cpp
> URL: http://svn.apache.org/viewvc/incubator/stdcxx/branches/4.2.x/examples/tutorial/icecream.cpp?rev=594966&r1=594965&r2=594966&view=diff
> ==============================================================================
> --- incubator/stdcxx/branches/4.2.x/examples/tutorial/icecream.cpp (original)
> +++ incubator/stdcxx/branches/4.2.x/examples/tutorial/icecream.cpp Wed Nov 14 09:34:27 2007
> @@ -41,16 +41,17 @@
> event (unsigned int t) : time (t)
> { }
>
> - // Execute event my invoking this method.
> + // Execute event by invoking this method.
> virtual void processEvent () = 0;
> - bool operator> ( const event* evt_ ) {
> - return time > evt_->time;
> - }
>
> const unsigned int time;
> };
>
> -typedef std::greater<event*> eventComparator;
> +struct eventComparator {
> + bool operator() (const event * left, const event * right) {
> + return left->time > right->time;
> + }
> +};
>
>
> // Framework for discrete event-driven simulations.
> @@ -66,14 +67,14 @@
> protected:
> std::priority_queue<event*,
> std::vector<event *, std::allocator<event*> >,
> - eventComparator > eventQueue;
> + eventComparator> eventQueue;
> };
>
>
> void simulation::run () {
> -
> +
> while (! eventQueue.empty ()) {
> -
> +
> event * nextEvent = eventQueue.top ();
> eventQueue.pop ();
> time = nextEvent->time;
> @@ -147,7 +148,7 @@
>
>
> void arriveEvent::processEvent () {
> -
> +
> if (theSimulation.canSeat (size))
> theSimulation.scheduleEvent
> (new orderEvent (time + 1 + irand (4), size));
> @@ -155,7 +156,7 @@
>
>
> void orderEvent::processEvent () {
> -
> +
> // Each person orders some number of scoops.
> for (unsigned int i = 0; i < size; i++)
> theSimulation.order (1 + irand (4));
> @@ -174,7 +175,7 @@
>
> // If sufficient room then seat customers.
> bool storeSimulation::canSeat (unsigned int numberOfPeople) {
> -
> +
> std::cout << "Time: " << time;
> std::cout << " group of " << numberOfPeople << " customers arrives";
>
> @@ -192,7 +193,7 @@
>
> // Service icecream, compute profits.
> void storeSimulation::order (unsigned int numberOfScoops) {
> -
> +
> std::cout << "Time: " << time << " serviced order for "
> << numberOfScoops << '\n';
> profit += 0.35 * numberOfScoops;
> @@ -201,7 +202,7 @@
>
> // People leave, free up chairs.
> void storeSimulation::leave (unsigned int numberOfPeople) {
> -
> +
> std::cout << "Time: " << time << " group of size "
> << numberOfPeople << " leaves\n";
> freeChairs += numberOfPeople;
> @@ -209,7 +210,7 @@
>
>
> int main () {
> -
> +
> std::cout << "Ice Cream Store simulation from Chapter 9\n";
>
> // Load queue with some number of initial events.
>
> Modified: incubator/stdcxx/branches/4.2.x/examples/tutorial/out/icecream.out
> URL: http://svn.apache.org/viewvc/incubator/stdcxx/branches/4.2.x/examples/tutorial/out/icecream.out?rev=594966&r1=594965&r2=594966&view=diff
> ==============================================================================
> --- incubator/stdcxx/branches/4.2.x/examples/tutorial/out/icecream.out (original)
> +++ incubator/stdcxx/branches/4.2.x/examples/tutorial/out/icecream.out Wed Nov 14 09:34:27 2007
> @@ -11,46 +11,46 @@
> pumping queue with event 17
> Time: 0 group of 2 customers arrives is seated
> Time: 0 group of 4 customers arrives is seated
> -Time: 3 serviced order for 3
> +Time: 2 group of 3 customers arrives is seated
> Time: 3 serviced order for 4
> Time: 3 serviced order for 1
> Time: 3 serviced order for 1
> -Time: 10 group of size 4 leaves
> -Time: 2 group of 3 customers arrives is seated
> -Time: 5 serviced order for 4
> +Time: 3 serviced order for 3
> +Time: 4 serviced order for 4
> +Time: 4 serviced order for 1
> +Time: 4 group of size 4 leaves
> +Time: 5 serviced order for 2
> Time: 5 serviced order for 1
> Time: 5 serviced order for 3
> -Time: 13 group of size 3 leaves
> Time: 7 group of 1 customers arrives is seated
> -Time: 8 serviced order for 3
> -Time: 10 group of size 1 leaves
> +Time: 7 group of size 2 leaves
> +Time: 7 group of size 3 leaves
> Time: 8 group of 3 customers arrives is seated
> -Time: 11 serviced order for 4
> -Time: 11 serviced order for 3
> -Time: 11 serviced order for 1
> -Time: 19 group of size 3 leaves
> -Time: 12 group of 3 customers arrives is seated
> -Time: 16 serviced order for 2
> -Time: 16 serviced order for 2
> -Time: 16 serviced order for 4
> -Time: 25 group of size 3 leaves
> +Time: 10 serviced order for 3
> Time: 12 group of 2 customers arrives is seated
> -Time: 15 serviced order for 3
> -Time: 15 serviced order for 4
> -Time: 22 group of size 2 leaves
> +Time: 12 group of 3 customers arrives is seated
> +Time: 12 serviced order for 2
> +Time: 12 serviced order for 2
> +Time: 12 serviced order for 4
> Time: 12 group of 1 customers arrives is seated
> -Time: 15 serviced order for 4
> -Time: 18 group of size 1 leaves
> +Time: 14 serviced order for 3
> +Time: 14 serviced order for 4
> Time: 14 group of 2 customers arrives is seated
> -Time: 15 serviced order for 3
> -Time: 15 serviced order for 2
> -Time: 20 group of size 2 leaves
> +Time: 15 serviced order for 4
> +Time: 16 serviced order for 1
> +Time: 16 serviced order for 3
> +Time: 16 serviced order for 2
> +Time: 17 serviced order for 2
> +Time: 17 serviced order for 2
> Time: 17 group of 2 customers arrives is seated
> -Time: 19 serviced order for 2
> -Time: 19 serviced order for 3
> -Time: 29 group of size 2 leaves
> -Time: 4 serviced order for 3
> -Time: 4 serviced order for 4
> -Time: 10 group of size 2 leaves
> -Total profits 22.4
> +Time: 18 group of size 1 leaves
> +Time: 19 group of size 1 leaves
> +Time: 21 group of size 2 leaves
> +Time: 21 group of size 3 leaves
> +Time: 21 group of size 3 leaves
> +Time: 21 serviced order for 3
> +Time: 21 serviced order for 4
> +Time: 24 group of size 2 leaves
> +Time: 27 group of size 2 leaves
> +Total profits 20.65
> End of ice cream store simulation
>
>
>