From 3f357d6c5b5444c9556e347aa60aa68d6577ec85 Mon Sep 17 00:00:00 2001
From: lecorre <paul.le-corre@etu.u-pec.fr>
Date: Fri, 15 Oct 2021 14:46:20 +0200
Subject: [PATCH] ajout fichiers tp4

---
 TP4/.nfs00000000023a0b5b0000001f | Bin 0 -> 16312 bytes
 TP4/.nfs00000000023a1c8700000008 | Bin 0 -> 16512 bytes
 TP4/.nfs00000000023a1cc900000020 | Bin 0 -> 16368 bytes
 TP4/.nfs00000000023a2b8d00000009 | Bin 0 -> 16512 bytes
 TP4/a.out                        | Bin 0 -> 16312 bytes
 TP4/ex1.c                        |  31 ++++++++++++++++
 TP4/ex2.c                        |  62 +++++++++++++++++++++++++++++++
 TP4/ex3.c                        |  24 ++++++++++++
 8 files changed, 117 insertions(+)
 create mode 100755 TP4/.nfs00000000023a0b5b0000001f
 create mode 100755 TP4/.nfs00000000023a1c8700000008
 create mode 100755 TP4/.nfs00000000023a1cc900000020
 create mode 100755 TP4/.nfs00000000023a2b8d00000009
 create mode 100755 TP4/a.out
 create mode 100644 TP4/ex1.c
 create mode 100644 TP4/ex2.c
 create mode 100644 TP4/ex3.c

diff --git a/TP4/.nfs00000000023a0b5b0000001f b/TP4/.nfs00000000023a0b5b0000001f
new file mode 100755
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diff --git a/TP4/.nfs00000000023a1c8700000008 b/TP4/.nfs00000000023a1c8700000008
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diff --git a/TP4/ex1.c b/TP4/ex1.c
new file mode 100644
index 0000000..6ea722d
--- /dev/null
+++ b/TP4/ex1.c
@@ -0,0 +1,31 @@
+#include <signal.h> 
+#include <stdio.h> 
+#include <stdlib.h>
+#include <unistd.h> 
+#include <sys/wait.h>
+
+static void msg1(int sig);
+
+int main(int argc, char const *argv[]) {
+	pid_t fils;
+
+	if(!(fils=fork())) {
+		signal(SIGQUIT, &msg1);
+		signal(SIGINT, &msg1);
+		pause();
+		pause();
+		pause();
+	} else {
+		sleep(1);
+		kill(fils, SIGQUIT);
+		kill(fils, SIGINT);
+		sleep(1);
+		kill(fils, SIGKILL);
+	}
+	
+	return EXIT_SUCCESS;
+}
+
+void msg1(int sig) {
+	printf("JE TRAITE PAS\n");
+} 
\ No newline at end of file
diff --git a/TP4/ex2.c b/TP4/ex2.c
new file mode 100644
index 0000000..8f47247
--- /dev/null
+++ b/TP4/ex2.c
@@ -0,0 +1,62 @@
+#include <signal.h> 
+#include <stdio.h> 
+#include <stdlib.h>
+#include <unistd.h> 
+#include <sys/wait.h>
+
+static void work_finished(int sig);
+
+
+static void save(int sig); 
+
+
+static void save_confirm(int sig);
+
+pid_t fils;
+
+int main(int argc, char const *argv[]) {
+	int mode = 'a'; // ou 'b'   si a alors le fils n'a pas le temps de terminer
+							//  si non a alors le fils termine son travail
+
+	if(!(fils=fork())) { // Fils
+		signal(SIGUSR2, &save);
+		printf("Travail en cours");
+		sleep(5);
+		if (mode != 'a') {
+			kill(getppid(), SIGQUIT); // Dire au père que le travail est terminé
+		}
+		
+		pause();// En attente d'une réponse (après l'envoi de la fin du travail)
+		pause();// En attente d'une réponse (après l'envoi de la confirmation de sauvegarde)
+	} else {     // Père
+		signal(SIGQUIT, &work_finished);
+		signal(SIGINT, &save_confirm);
+		if (mode == 'a') {
+			sleep(2);
+			printf("Dire au fils de sauvegarder")
+		} else {
+			pause(); // En attente de la fin du travail du fils
+		}
+		pause(); // En attente de la fin de la sauvegarde du fils
+	}
+	
+	return EXIT_SUCCESS;
+}
+
+void work_finished(int sig) { // SIGQUIT
+	printf("Le travail est terminé\n");
+	kill(fils, SIGUSR2); // Dire au fils de sauvegarder
+}
+
+void save(int sig) { // SIGUSR2
+	printf("Sauvegarde des données en cours...\n");
+	sleep(1);
+	kill(getppid(), SIGINT); // Dire au père que la sauvegarde est terminée
+
+} 
+
+void save_confirm(int sig) { // SIGINT
+	printf("Sauvegarde terminée\n");
+	sleep(.5);
+	kill(fils, SIGKILL); // Kill du fils
+} 
\ No newline at end of file
diff --git a/TP4/ex3.c b/TP4/ex3.c
new file mode 100644
index 0000000..cd008ec
--- /dev/null
+++ b/TP4/ex3.c
@@ -0,0 +1,24 @@
+#include <signal.h> 
+#include <stdio.h> 
+#include <stdlib.h>
+#include <unistd.h> 
+#include <sys/wait.h>
+
+static void babouche() {
+	printf("Je recois le signal 5/5");
+}
+
+int main(int argc, char const *argv[]) {
+	pid_t pid;
+	signal(SIGUSR2, &babouche);
+	if (pid=fork()) { // PERE
+		kill(pid, SIGUSR2);
+	} else { // FILS
+		pause();
+	}
+	return EXIT_SUCCESS;
+}
+
+// La réponse a la question : 
+// "Est ce que le handler de signaux d'un processus est hérité par son fils?"
+// Est non.
\ No newline at end of file