X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcfg%2Fcompiler.h;h=3a2f34c2c429f159bbc02f2d95c55a24457d6169;hb=f7b9f562693460fca28061c13a40e2a363cf00f7;hp=0121b96367fe067cc98ba9a92004356c05ef56a5;hpb=48586b4fc3e575029a88ab37930c8a0e723ca99d;p=bertos.git

diff --git a/bertos/cfg/compiler.h b/bertos/cfg/compiler.h
index 0121b963..3a2f34c2 100644
--- a/bertos/cfg/compiler.h
+++ b/bertos/cfg/compiler.h
@@ -450,6 +450,9 @@
 	#endif
 #endif
 
+/** User defined callback type */
+typedef void (*Hook)(void *);
+
 /** Bulk storage large enough for both pointers or integers. */
 typedef void * iptr_t;
 
@@ -459,6 +462,14 @@ typedef const void * const_iptr_t;
 typedef unsigned char sigbit_t;  /**< Type for signal bits. */
 typedef unsigned char sigmask_t; /**< Type for signal masks. */
 
+/**
+ * Signal structure
+ */
+typedef struct Signal
+{
+	sigmask_t    wait;    /**< Signals the process is waiting for */
+	sigmask_t    recv;    /**< Received signals */
+} Signal;
 
 /**
  * \name Standard type definitions.
@@ -603,4 +614,11 @@ typedef unsigned char sigmask_t; /**< Type for signal masks. */
 			do { (void)(&(var) == (type *)0); } while(0)
 #endif
 
+/**
+ * Prevent the compiler from optimizing access to the variable \a x, enforcing
+ * a refetch from memory. This also forbid from reordering successing instances
+ * of ACCESS_SAFE().
+ */
+#define ACCESS_SAFE(x) (*(volatile typeof(x) *)&(x))
+
 #endif /* BERTOS_COMPILER_H */