Checkpoint program at any time ?

From: (brytwang_at_gmail_dot_com)
Date: Wed Dec 12 2007 - 18:26:34 PST

  • Next message: Paul H. Hargrove: "Re: Checkpoint program at any time ?"
    Dear Sir ,
    
    Thank you for your help .
    I want to know can we explicitly checkpoint and restart at any time in my
    program , to explain my meaning clearly ,
    I offer an example as follows :
    
    example( maybe wrong):
                         statements ;
                          statements;
                          cr_client_id_t  cr;
                              .
                              .
                              .
                          cr_enter_cs(cr);  //enter a critical section
                          cr_checkpoint(0); //place1 , I want to set the first
    checkpoint here
                          cr_leave_cs(cr);
                          statements; //place2
                          .
                          .
                          .
                          cr_enter_cs(cr);
                          cr_checkpoint(0); //place3, the second checkpoint I
    want to set here
                          cr_leave_cs(cr);
                          statements; //place4
                          .
                          .
                          .
    Suppose this program is attacked (or other unexpected ) during its execution
    , but I have set two checkpoints above , so
    there is no need to restart my program at its beginning . If I can know at
    place2(or place4) the program is attacked , so
    I want to restart it at place1(or place3) , can we explicitly restart my
    program at place1(or place3) ? If BLCR supports ,
    would you please offer me an example ?
    
    Thanks 
    
    Daniel.
    

  • Next message: Paul H. Hargrove: "Re: Checkpoint program at any time ?"