Mycorrhiza/test/mycoagent2.c

/*  
 * mycoagent.c
 *
 * This is an example agent that showcases the use of mycorrhiza.
 */

#include "../src/myco-agent.c"

// MYCO fetch:          Requests a remote, transactional resource. Blocks until
//                      the resource has been granted.
// MYCO create:         Creates a new resource and registers it with the agent.
// MYCO release:        Releases a resource. It can now be taken by other agents via fetch.
// MYCO free:           Destroys a resource for the entire system. Only works if the calling agent has ownership (fetch/create) of the resource.
// MYCO read:           Creates a local copy of a remote resource.
// MYCO push:           Updates the remote resource with the local copy obtained from read.
// MYCO lock:           Protects a resource from read access.
// MYCO unlock:         Allows read access again.

int main() {
    // At the beginning every agent needs to register itself with the agent server.
    char *agent_name = "DOMAIN1_MYAGENT2";
    int agent_message_queue_id;
    agent_message_queue_id = myco_agent_register(agent_name);

    // MYCO create
    // #MYCO create("RESOURCE_2", 1024, transactional)
    char *resource_name_2 = "RESOURCE_2";
    int resource_size_2 = 1024;
    void *resource_pointer_2 = myco_agent_register_resource(agent_message_queue_id, agent_name, resource_name_2, RESOURCE_TRANSACTIONAL, getpid(), resource_size_2);

    // Put some random numbers into RESOURCE_2
    int i;
    srand(time(NULL));
    for (i=0; i < resource_size_2/sizeof(int); i++) {
        ((int *)resource_pointer_2)[i] = rand();
    }
    printf("The first integer of RESOURCE_2 is: %d\n", ((int *)resource_pointer_2)[0]);

    // MYCO release
    //myco_agent_release_resource(agent_message_queue_id, agent_name, resource_name_2, resource_pointer_2, resource_size_2);

    // MYCO create
    // #MYCO create("RESOURCE_3", 1024, nottransactional)
    char *resource_name_3 = "RESOURCE_3";
    int resource_size_3 = 1024;
    void *resource_pointer_3 = myco_agent_register_resource(agent_message_queue_id, agent_name, resource_name_3, RESOURCE_TRANSACTIONAL, getpid(), resource_size_3);

    // Put some random numbers into RESOURCE_3
    int j;
    for (j=0; j < resource_size_3/sizeof(int); j++) {
        ((int*)resource_pointer_3)[j] = rand();
    }
    printf("The first integer of RESOURCE_3 is: %d\n", ((int*)resource_pointer_3)[0]);

    // Sleep, so the showcase program can request RESOURCE_2 and read/push RESOURCE_3
    sleep(30);

    // RESOURCE_3 has been pushed, lets check
    printf("The first integer of RESOURCE_3 is now: %d\n", ((int*)resource_pointer_3)[0]);

    // MYCO free
    // #MYCO free("RESOURCE_2")
    myco_agent_unregister_resource(agent_message_queue_id, resource_name_2);

    // MYCO free
    // #MYCO free("RESOURCE_3")
    myco_agent_unregister_resource(agent_message_queue_id, resource_name_3);
    

    // At the end of its runtime the agent unregisters with the agent.
    myco_agent_unregister(agent_name, agent_message_queue_id);

    return EXIT_SUCCESS;
}