void delete_list(LinkedList * list)
{
if(list == NULL)
return;
LinkedList * next;
do
{
next = list->next;
delete_list_element(list);
list = next;
}
while (list != NULL);
}
void remove_list_element(LinkedList * list, void * data)
{
do
{
if(list->data == data)
{
list->prev->next = list->next;
if(list->next != NULL)
list->next->prev = list->prev;
delete_list_element(list);
}
list = list->next;
}
while(list != NULL);
}
int poll_pids() { //Poll all the alive/exited pids with WNOHANG - returns immediately without waiting for child process to exit.
if (pid_list.starting==NULL) {
return 0;
}
else {
configure_status_file_and_mmap();
int sleeptime=5,i;
struct subprocess* current=pid_list.starting;
int poll_status,status;
lock_file();
sprintf((char *)mmap_file_pointer,"");
while (current->next!=NULL) {
poll_status=waitpid(current->pid,&status,WNOHANG);
if (poll_status==current->pid) {
int exit_code=WEXITSTATUS(status);
if (exit_code==0) {
subprocess_count-=1;
delete_list_element(current);
}
else if (exit_code==30 || exit_code==255 || exit_code==12) {
if (exit_code==12) {sleeptime=1;}
current->retries+=1;
sleeptime=5;
for (i=0;i<current->retries && sleeptime<320;i++) {sleeptime*=2;}
strcpy(current->start_time,get_time_string());
current->pid=exec_pipe(current->command,sleeptime);
}
else {
subprocess_count-=1;
delete_list_element(current);
}
}
else if (poll_status==0) {
put_info_in_status_file(current);
}
current=current->next;
}
poll_status=waitpid(current->pid,&status,WNOHANG);
if (poll_status==current->pid) {
int exit_code=WEXITSTATUS(status);
if (exit_code==0) {
subprocess_count-=1;
delete_list_element(current);
}
else if (exit_code==30 || exit_code==255 || exit_code==12) {
if (exit_code==12) {sleeptime=1;}
current->retries+=1;
sleeptime=5;
for (i=0;i<current->retries && sleeptime<320;i++) {sleeptime*=2;}
strcpy(current->start_time,get_time_string());
printf("%s\n",current->command);
current->pid=exec_pipe(current->command,sleeptime);
}
else {
subprocess_count-=1;
delete_list_element(current);
}
}
else if (poll_status==0) {
put_info_in_status_file(current);
}
unlock_file();
clear_status_file();
return 0;
}
}
int kill_and_replace_process(struct subprocess* to_be_killed, struct subprocess* replacement, struct inotify_event* event, char*command) {
kill(to_be_killed->pid,SIGINT);
delete_list_element(to_be_killed);
return execute_and_create_process(replacement,event,command);
}
