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Using only one message queue.
[wsti_so.git]
/
src
/
process1.c
diff --git
a/src/process1.c
b/src/process1.c
index 2492ebecfe874f5ed4b4bae357b8e05aa56122f0..fbbfa40c1b2d5f848ea279ce4ce954b106719062 100644
(file)
--- a/
src/process1.c
+++ b/
src/process1.c
@@
-50,11
+50,8
@@
struct message * processes = NULL;
/**
* Message queue variables
*/
/**
* Message queue variables
*/
-key_t qkey;
-int qid_input;
-
-int qid_output1;
-int qid_output2;
+key_t qkey = 12356;
+int qid;
struct queue_message {
long mtype;
struct queue_message {
long mtype;
@@
-72,7
+69,7
@@
void notify_other_processes(int signo) {
if (i != 0 && pid != 0) {
msg.mtype = i+1;
fprintf(stderr, "[%s] Sending message of type (%d) with value %d\n", "process1", msg.mtype, msg.signo[0]);
if (i != 0 && pid != 0) {
msg.mtype = i+1;
fprintf(stderr, "[%s] Sending message of type (%d) with value %d\n", "process1", msg.mtype, msg.signo[0]);
- msgsnd(
p
id, &msg, sizeof(int), 0);
+ msgsnd(
q
id, &msg, sizeof(int), 0);
fprintf(stderr, "[%s] Sending signal %s (%d) to PID: %d\n", "process1", strsignal(SIGUSR1), SIGUSR1, pid);
kill(pid, SIGUSR1);
}
fprintf(stderr, "[%s] Sending signal %s (%d) to PID: %d\n", "process1", strsignal(SIGUSR1), SIGUSR1, pid);
kill(pid, SIGUSR1);
}
@@
-90,15
+87,13
@@
void sig_handler(int signo)
fprintf(stderr, "[%s] > Notified!\n", "process1");
struct queue_message msg;
/* Check queues from both other processes */
fprintf(stderr, "[%s] > Notified!\n", "process1");
struct queue_message msg;
/* Check queues from both other processes */
- if (msgrcv(
processes->pids[1]
, &msg, sizeof(int), 1, 0) > 0) {
+ if (msgrcv(
qid
, &msg, sizeof(int), 1, 0) > 0) {
fprintf(stderr, "[%s] > Notified with value: %s!\n", "process1", strsignal(msg.signo[0]));
raise(msg.signo[0]);
fprintf(stderr, "[%s] > Notified with value: %s!\n", "process1", strsignal(msg.signo[0]));
raise(msg.signo[0]);
- break;
}
}
- else if (msgrcv(
processes->pids[2]
, &msg, sizeof(int), 1, 0) > 0) {
+ else if (msgrcv(
qid
, &msg, sizeof(int), 1, 0) > 0) {
fprintf(stderr, "[%s] > Notified with value: %s!\n", "process1", strsignal(msg.signo[0]));
raise(msg.signo[0]);
fprintf(stderr, "[%s] > Notified with value: %s!\n", "process1", strsignal(msg.signo[0]));
raise(msg.signo[0]);
- break;
}
}
else if (signo == SIGTERM) {
}
}
else if (signo == SIGTERM) {
@@
-179,11
+174,7
@@
int main(void) {
/**
* Register message queue to communicate with other processes
*/
/**
* Register message queue to communicate with other processes
*/
- qkey = getpid();
- qid_input = msgget(qkey, IPC_CREAT | 0666);
-
- qid_output1 = msgget(processes->pids[1], IPC_CREAT | 0666);
- qid_output2 = msgget(processes->pids[2], IPC_CREAT | 0666);
+ qid = msgget(qkey, IPC_CREAT | 0666);
mkfifo(write_pipe, 0666);
mkfifo(write_pipe, 0666);