Protect concurrent accesses to shared variables in process.

[loba.git] / process.h

diff --git a/process.h b/process.h
index c31d21345ab6c05993b7be8bab5cff20ea4e1f8e..901d381fabeea8d2dc0025401d7b5966cefac9a4 100644 (file)
--- a/process.h
+++ b/process.h
@@ -25,6 +25,9 @@
 
 class process {
 public:
 
 class process {
 public:

+    static void set_proc_mutex(mutex_t* m) { proc_mutex = m;            }
+
+    // Note: normally used with proc_mutex locked.

     static double get_total_load_init()    { return total_load_init;    }
     static double get_total_load_running() { return total_load_running; }
     static double get_total_load_exit()    { return total_load_exit;    }
     static double get_total_load_init()    { return total_load_init;    }
     static double get_total_load_running() { return total_load_running; }
     static double get_total_load_exit()    { return total_load_exit;    }


@@ -83,6 +86,10 @@ protected:
                        xbt_log_category_t cat = _XBT_LOGV(default)) const;
 
 private:
                        xbt_log_category_t cat = _XBT_LOGV(default)) const;
 
 private:

+    static mutex_t *proc_mutex; // protect access to global variables
+                                // (must be set before constructing
+                                // the first object!)
+

     static double total_load_init; // sum of process loads at init
     static double total_load_running; // sum of loads while running
     static double total_load_exit; // sum of process loads at exit
     static double total_load_init; // sum of process loads at init
     static double total_load_running; // sum of loads while running
     static double total_load_exit; // sum of process loads at exit