From 92ffb7e56212b46c395f3aad5a9a4c2f101248c6 Mon Sep 17 00:00:00 2001
From: Geoffrey Frogeye <geoffrey@frogeye.fr>
Date: Fri, 3 Mar 2017 17:45:25 +0100
Subject: [PATCH] TP3

---
 TP3/.gitignore        |   2 ++
 TP3/Makefile          |   9 ++++++++
 TP3/alloc_dynamique   | Bin 0 -> 5001 bytes
 TP3/alloc_dynamique.c |  48 ++++++++++++++++++++++++++++++++++++++++++
 TP3/alloc_statique.c  |  19 +++++++++++++++++
 5 files changed, 78 insertions(+)
 create mode 100644 TP3/.gitignore
 create mode 100644 TP3/Makefile
 create mode 100755 TP3/alloc_dynamique
 create mode 100644 TP3/alloc_dynamique.c
 create mode 100644 TP3/alloc_statique.c

diff --git a/TP3/.gitignore b/TP3/.gitignore
new file mode 100644
index 0000000..e1817f3
--- /dev/null
+++ b/TP3/.gitignore
@@ -0,0 +1,2 @@
+alloc_statique
+alloc_dynamique
diff --git a/TP3/Makefile b/TP3/Makefile
new file mode 100644
index 0000000..a216135
--- /dev/null
+++ b/TP3/Makefile
@@ -0,0 +1,9 @@
+all: $(patsubst %.c,%,$(shell ls *.c))
+
+%: %.c
+	clang -Wall -Wextra $< -o $@
+
+.PHONY: all clean
+
+clean:
+	rm *.exe
diff --git a/TP3/alloc_dynamique b/TP3/alloc_dynamique
new file mode 100755
index 0000000000000000000000000000000000000000..a34868b58eed9ea89aa5387c5da13a40cbc34e76
GIT binary patch
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diff --git a/TP3/alloc_dynamique.c b/TP3/alloc_dynamique.c
new file mode 100644
index 0000000..7bb0dfc
--- /dev/null
+++ b/TP3/alloc_dynamique.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <stdlib.h>
+#define SIZE 20000
+
+int main() {
+    int i, j;
+
+    // 2.1.3
+    int *v;
+    v = (int *) malloc(SIZE * sizeof(int));
+    for (i = 0; i < SIZE; i++) {
+        v[i] = i;
+    }
+    // Affichage pour vérifier
+    // for (i = 0; i < SIZE; i++) {
+    //     // printf("v[%d] = %d\n", i, v[i]);
+    // }
+
+    // 2.1.4
+    int **mat;
+    mat = (int **) malloc(SIZE * sizeof(int));
+    for (i = 0; i < SIZE; i++) {
+        v = (int *) malloc(SIZE * sizeof(int));
+        // On attenint la limite pour une taille égale à la RAM + le SWAP disponible
+        if (v == NULL) {
+            printf("Limite atteinte: i = %d\n", i);
+            return EXIT_FAILURE;
+        }
+        mat[i] = v;
+        for (j = 0; j < SIZE; j++) {
+            v[j] = i + j;
+        }
+    }
+    // Affichage pour vérifier
+    // for (i = 0; i < SIZE; i++) {
+    //     for (j = 0; j < SIZE; j++) {
+    //         printf("mat[%d][%d] = %d\n", i, j, mat[i][j]);
+    //     }
+    // }
+
+    // 2.1.6
+    for (i = 0; i < SIZE; i++) {
+        free(mat[i]);
+    }
+    free(mat);
+
+    return EXIT_SUCCESS;
+}
diff --git a/TP3/alloc_statique.c b/TP3/alloc_statique.c
new file mode 100644
index 0000000..3b75834
--- /dev/null
+++ b/TP3/alloc_statique.c
@@ -0,0 +1,19 @@
+#define SIZE 27500
+int M[SIZE][SIZE];
+
+int main() {
+    // 2.1.1
+    // Sur une machine de TP Astruc ça plante à partir de SIZE ≥ 1448,
+    // ce qui correspond à SIZE²×sizeof(int)/1024 = 1448²×4/1024 = 8190 KiB
+    int i, j;
+    for (i = 0; i < SIZE; i++) {
+        for (j = 0; j < SIZE; j++) {
+            M[i][j] = i + j;
+        }
+    }
+
+    // 2.2.2
+    // Avec une definition de M en globale, ça plante à partir de 27500 < SIZE ≤ 30000
+    // Ça dépend en fait de la quantité de RAM et de SWAP disponible
+
+}