/* main program */
int main(int argc, char **argv) {
char *dir;
setlocale(LC_ALL, "");
if((dir = argv_parse(argc, argv)) == NULL)
dir = ".";
calc_init(dir, NULL);
initscr();
cbreak();
noecho();
curs_set(0);
keypad(stdscr, TRUE);
if(ncresize(min_rows, min_cols))
min_rows = min_cols = 0;
while(1) {
if(pstate == ST_CALC && calc_process())
break;
else if(pstate == ST_DEL)
delete_process();
else if(input_handle(0))
break;
}
erase();
refresh();
endwin();
exclude_clear();
return 0;
}
/*
* check_wait_status: This waits on child processes, reporting terminations
* as needed, etc
*/
int check_wait_status(int wanted)
{
Process *proc;
int status;
int pid, i;
if ((pid = waitpid(wanted, &status, WNOHANG)) > 0) {
if (wanted != -1 && pid == wanted) {
if (WIFEXITED(status))
return WEXITSTATUS(status);
if (WIFSTOPPED(status))
return -(WSTOPSIG(status));
if (WIFSIGNALED(status))
return -(WTERMSIG(status));
}
errno = 0; /* reset errno, cause wait3 changes it */
for (i = 0; i < process_list_size; i++) {
if ((proc = process_list[i]) && proc->pid == pid) {
proc->exited = 1;
proc->termsig = WTERMSIG(status);
proc->retcode = WEXITSTATUS(status);
if ((proc->p_stderr == -1) && (proc->p_stdout == -1))
delete_process(i);
return 0;
}
}
}
return -1;
}
void *tarefa_monitora(){
if(__DEBUG__){
printf("\e[36m[ DEBUG ]\e[0m Estamos na tarefa_monitora %d\n", (int) pthread_self() );
}
int status;
while(1){
/* Esperar que existam filhos em execucao */
sem_wait(&filhos_em_execucao);
pthread_mutex_lock(&children_mutex);
if(numChildren > 0) {
pthread_mutex_unlock(&children_mutex);
// aguarda pela terminacao dos processos filhos
pid_t ret = wait(&status);
/*Assinalar que existe menos um filho em execucao*/
sem_post(&lim_processos);
if(__DEBUG__)
printf("\e[36m[ DEBUG ]\e[0m Process %d finished\n", (int) ret );
// regista o pid do processo acabado de terminar e o respectivo return status na lista
if(WIFEXITED(status)){
//atulizacao do tempo de fim do processo
pthread_mutex_lock(&lista_mutex);
update_terminated_process(lista_processos, ret, time(NULL), WEXITSTATUS(status));
pthread_mutex_unlock(&lista_mutex);
}else{
//Eliminacao da lista de um processo no qual ocorreu um erro (ex. seg fault)
pthread_mutex_lock(&lista_mutex);
delete_process(lista_processos, ret);
pthread_mutex_unlock(&lista_mutex);
printf("\e[31m[ ERROR ]\e[0m Process %d terminated Abruptly\n", ret );
}
pthread_mutex_lock(&children_mutex);
numChildren--;
pthread_mutex_unlock(&children_mutex);
}else{
if(_exit_ctrl){
/*
* check_process_limits: checks each running process to see if it's reached
* the user selected maximum number of output lines. If so, the processes is
* effectively killed
*/
void check_process_limits(void)
{
int limit;
int i;
Process *proc;
if ((limit = get_int_var(SHELL_LIMIT_VAR)) && process_list) {
for (i = 0; i < process_list_size; i++) {
if ((proc = process_list[i]) != NULL) {
if (proc->counter >= limit) {
proc->p_stdin = exec_close(proc->p_stdin);
proc->p_stdout = exec_close(proc->p_stdout);
proc->p_stderr = exec_close(proc->p_stderr);
if (proc->exited)
delete_process(i);
}
}
}
}
}
/*
* do_processes: given a set of read-descriptors (as returned by a call to
* select()), this will determine which of the process has produced output
* and will hadle it appropriately
*/
void do_processes(fd_set * rd)
{
int i, flag;
char exec_buffer[INPUT_BUFFER_SIZE + 1];
char *ptr;
Process *proc;
int old_timeout;
if (process_list == NULL)
return;
old_timeout = dgets_timeout(1);
for (i = 0; i < process_list_size; i++) {
if ((proc = process_list[i]) && proc->p_stdout != -1) {
if (FD_ISSET(proc->p_stdout, rd)) {
/*
* This switch case indented back to allow for 80 columns,
* phone, jan 1993.
*/
switch (dgets(exec_buffer, INPUT_BUFFER_SIZE, proc->p_stdout, NULL)) {
case 0:
if (proc->p_stderr == -1) {
proc->p_stdin = exec_close(proc->p_stdin);
proc->p_stdout = exec_close(proc->p_stdout);
if (proc->exited)
delete_process(i);
} else
proc->p_stdout = exec_close(proc->p_stdout);
break;
case -1:
if (proc->logical)
flag = do_hook(EXEC_PROMPT_LIST, "%s %s", proc->logical, exec_buffer);
else
flag = do_hook(EXEC_PROMPT_LIST, "%d %s", i, exec_buffer);
set_prompt_by_refnum(proc->refnum, exec_buffer);
update_input(UPDATE_ALL);
/* if (flag == 0) */
break;
default:
message_to(proc->refnum);
proc->counter++;
ptr = exec_buffer + strlen(exec_buffer) - 1;
if ((*ptr == '\n') || (*ptr == '\r')) {
*ptr = (char) 0;
ptr = exec_buffer + strlen(exec_buffer) - 1;
if ((*ptr == '\n') || (*ptr == '\r'))
*ptr = (char) 0;
}
if (proc->logical)
flag = do_hook(EXEC_LIST, "%s %s", proc->logical, exec_buffer);
else
flag = do_hook(EXEC_LIST, "%d %s", i, exec_buffer);
if (flag) {
if (proc->redirect) {
int server;
server = from_server;
from_server = proc->server;
send_text(proc->who, stripansicodes(exec_buffer), proc->redirect, 1, 1);
from_server = server;
} else
put_it("%s", stripansicodes(exec_buffer));
}
message_to(0);
break;
}
/* end of special intendation */
}
}
if (process_list && i < process_list_size && (proc = process_list[i]) && proc->p_stderr != -1) {
if (FD_ISSET(proc->p_stderr, rd)) {
/* Do the intendation on this switch as well */
switch (dgets(exec_buffer, INPUT_BUFFER_SIZE, proc->p_stderr, NULL)) {
case 0:
if (proc->p_stdout == -1) {
proc->p_stderr = exec_close(proc->p_stderr);
proc->p_stdin = exec_close(proc->p_stdin);
if (proc->exited)
delete_process(i);
} else
proc->p_stderr = exec_close(proc->p_stderr);
break;
case -1:
if (proc->logical)
flag = do_hook(EXEC_PROMPT_LIST, "%s %s", proc->logical, exec_buffer);
else
flag = do_hook(EXEC_PROMPT_LIST, "%d %s", i, exec_buffer);
set_prompt_by_refnum(proc->refnum, exec_buffer);
update_input(UPDATE_ALL);
if (flag == 0)
break;
default:
message_to(proc->refnum);
(proc->counter)++;
ptr = exec_buffer + strlen(exec_buffer) - 1;
if ((*ptr == '\n') || (*ptr == '\r')) {
*ptr = (char) 0;
ptr = exec_buffer + strlen(exec_buffer) - 1;
if ((*ptr == '\n') || (*ptr == '\r'))
*ptr = (char) 0;
}
if (proc->logical)
flag = do_hook(EXEC_ERRORS_LIST, "%s %s", proc->logical, exec_buffer);
else
flag = do_hook(EXEC_ERRORS_LIST, "%d %s", i, exec_buffer);
if (flag) {
if (proc->redirect) {
int server;
server = from_server;
from_server = proc->server;
send_text(proc->who, stripansicodes(exec_buffer), process_list[i]->redirect, 1, 1);
from_server = server;
} else
put_it("%s", stripansicodes(exec_buffer));
}
message_to(0);
break;
}
/* End of indentation for 80 columns */
}
}
}
check_process_limits();
(void) dgets_timeout(old_timeout);
}
