Whell I did a small test application to test the usage of
boost::pool_allocator and boost::fast_pool_allocator. My application will
possibly do a lot of transition from a state to another.
I found that it is better to use state chart classes without allocator.
In the code below tese are the results:
- Without allocator 5.7 sec
- with boost::pool_allocator 10.7 sec
- with boost::fast_pool_allocator 8.7 sec
Next action could be
- test with another allocator
- try the asynchronous version
Any suggestion?
#include
{};
struct event_1_2 : event< event_1_2 //, boost::fast_pool_allocator< event_1_2 >
{}; struct event_2_3 : event< event_2_3 //, boost::fast_pool_allocator< event_2_3 > {}; struct event_3_4 : event< event_3_4 //, boost::fast_pool_allocator< event_3_4 > {}; struct event_4_1 : event< event_4_1 //, boost::fast_pool_allocator< event_4_1 > {};
struct state_1
: simple_state< state_1, main_machine >
{
typedef transition< event_1_2, state_2 > reactions;
};
struct state_2
: simple_state< state_2, main_machine >
{
typedef transition< event_2_3, state_3 > reactions;
};
struct state_3
: simple_state< state_3, main_machine >
{
//typedef transition< event_3_4, state_4 > arc; // it doesn't work
typedef transition< event_3_4, state_4 > reactions;
//state_3(){std::cout<<"3";}
//~state_3(){std::cout<<"~3";}
};
struct state_4
: simple_state< state_4, main_machine >
{
typedef transition< event_4_1, state_1 > reactions;
};
void main(){
main_machine fsm;
fsm.initiate();
{
boost::progress_timer t; // count the time elapsed
// before distruction: not very precise
// for expected big differences
for( int i = 0; i < 1000000; i ++ ){
fsm.process_event( event_1_2() );
fsm.process_event( event_2_3() );
fsm.process_event( event_3_4() );
fsm.process_event( event_4_1() );
}
}
}
On Thu, Nov 26, 2009 at 4:57 PM, Eric J. Holtman
Conoscenza Silente wrote:
I would like to fasten up the whole process; let's say that I would like to avoid the creation/destruction of the class each time using object already allocated in memory that are deleted only at the exit of the application. Is this a good way in your opinion ?
So when you profile your entire application, how much time is being spent in boost's state library? _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users