Example: lr_get_trans_instance_duration

In the following example, the lr_get_trans_instance_duration function checks the durations of parent and child transaction instances, and sends them to the Output window.

#include "as_web.h"
Action() {
    long parent_trans_handle;
    long child_handle;
    double trans_time;
    int rc;

    /* Start the main transaction instance.
        Passing 0 as the parent handle indicates that the 
        transaction has no parent.
        The function return value is the handle used in other 
        transaction instance functions.     */

    parent_trans_handle = lr_start_transaction_instance("ParentTransaction",0);

    /*Perform the business process, represented here with a single web_url call. */
    web_url("web_url", "URL=http://www.ABC.com",LAST );  
    rc = lr_get_trans_instance_status(parent_trans_handle);
    if (rc == LR_FAIL) {
     /* web_url has failed the transaction. No point in continuing, because
        future calls will probably also fail. */
     lr_end_transaction_instance(parent_trans_handle, LR_FAIL);
     return;
    }

    /* Start the child transaction instance. Passing the handle returned from another 
        lr_start_transaction_instance call as the 
        handle argument makes this transaction a child instance.     */

    child_handle = lr_start_transaction_instance("ChildTransInstance",parent_trans_handle);
    // Perform the business process
    web_url("web_url","URL=http://ABC.com",LAST );

    /* Get the child transaction instance durations. Pass the instance handle. The duration in seconds is the return value. */

    trans_time = lr_get_trans_instance_duration(child_handle);
    lr_output_message("First child instance time is %lf seconds.", trans_time);

    //Think time
    trans_time = lr_get_trans_instance_think_time(child_handle);
    lr_output_message("First child instance think time is %lf seconds.", trans_time);

    //Wasted time
    trans_time = lr_get_trans_instance_wasted_time (child_handle);
    lr_output_message("First child instance waste time is %lf seconds.", trans_time);

    // End the child transaction instance

    lr_end_transaction_instance(child_handle, LR_PASS);

    /* Get the Parent transaction instance duration, which includes the child transaction duration. */
    trans_time = lr_get_trans_instance_duration(parent_trans_handle);
    lr_output_message("Parent Transaction duration is %lf seconds.", trans_time );

    //End the parent transaction instance
    lr_end_transaction_instance(parent_trans_handle, LR_PASS);
    return 0;
}