X-Git-Url: https://git.llucax.com/z.facultad/75.74/practicos.git/blobdiff_plain/2d0aa03246e924c53fb2e5c3a3af3dcaa3a7eab5..865c286c8c17594d33075e9696d85968eea8dd3b:/practicas/practica2/P02e1101.cpp?ds=sidebyside

diff --git a/practicas/practica2/P02e1101.cpp b/practicas/practica2/P02e1101.cpp
index 4c5cd03..f593405 100644
--- a/practicas/practica2/P02e1101.cpp
+++ b/practicas/practica2/P02e1101.cpp
@@ -90,12 +90,13 @@ int main(int argc, char *argv[])
     }
     int proc = atoi(argv[1]);
 
-    int shm_id = shmget(SHM_KEY, sizeof(Molinete), IPC_CREAT | 0666);
-    if (shm_id == -1)
+    int shm_id;
+    do
     {
-        cerr << "Error al crea/obtener shared memory.\n";
-        return 2;
+        shm_id = shmget(SHM_KEY, sizeof(Molinete),
+                (proc ? 0 : IPC_CREAT) | 0666); // crea solo si es el proceso 0
     }
+    while (proc != 0 && shm_id == -1);
     Molinete* molinete = (Molinete*) shmat(shm_id, NULL, 0);
     if (molinete == (Molinete*) -1)
     {
@@ -103,14 +104,11 @@ int main(int argc, char *argv[])
         return 3;
     }
 
-    cout << "Shared memory id = " << shm_id << "\n";
-
     // Si somos el primer proceso inicializamos el molinete
-    if (!proc) molinete_init(*molinete);
-    else usleep(1000); // espero que el 1er proceso inicialice
+    if (proc == 0) molinete_init(*molinete);
 
     // Maxima cantidad de iteraciones (puede venir por parametro)
-    int max_iter = 100000;
+    int max_iter = 100;
     if (argc > 2)
         max_iter = atoi(argv[2]);