From: Paul H. Hargrove (hargrove_at_hpcrd_dot_lbl_dot_gov)
Date: Mon Dec 17 2007 - 11:16:33 PST
My mailer appears to have removed the indentation from my code examples.
Below is another try at sending my second example (I hope the
indentation survives this time).
-Paul
cr_client_id_t cr;
cr_checkpoint_args_t cr_args;
cr_checkpoint_handle_t cr_handle;
int err;
...
cr = cr_init();
cr_initialize_checkpoint_args_t(&cr_args); // start with defaults
cr_args.cr_scope = CR_SCOPE_PROC; // checkpoint a process
cr_args.cr_target = 0; // process = self
...
//place1:
cr_args.cr_fd = open(some_filename, O_WRONLY|O_CREAT|O_LARGEFILE, 0400);
if (cr_args.cr_fd < 0) { // HANDLE ERROR HERE }
err = cr_request_checkpoint(&cr_args, &cr_handle);
if (err < 0) { // HANDLE ERROR HERE }
do { // Wait for checkpoint to complete
err = cr_poll_checkpoint(&cr_handle, NULL);
if (err < 0) {
if (errno == EINVAL) {
// expect this value when restarting -- not an error
err = 0;
} else if (errno == EINTR) {
// poll was interrupted by a signal -- while loop retries
} else {
// HANDLE ERROR HERE
}
}
} while (err < 0);
close(cr_args.cr_fd);
statements; //place2
...
//place3: SAME AS PLACE1
statements; //place4
...
--
Paul H. Hargrove PHHargrove_at_lbl_dot_gov
Future Technologies Group
HPC Research Department Tel: +1-510-495-2352
Lawrence Berkeley National Laboratory Fax: +1-510-486-6900