Enlightenment CVS committal
Author : pfritz
Project : e17
Module : libs/ewl
Dir : e17/libs/ewl/src/lib
Modified Files:
ewl_misc.c ewl_macros.h ewl_debug.h
Log Message:
add macro to cast from pointer to int and vice versa
===================================================================
RCS file: /cvs/e/e17/libs/ewl/src/lib/ewl_misc.c,v
retrieving revision 1.112
retrieving revision 1.113
diff -u -3 -r1.112 -r1.113
--- ewl_misc.c 4 Jun 2008 20:18:27 -0000 1.112
+++ ewl_misc.c 14 Jul 2008 17:27:20 -0000 1.113
@@ -136,6 +136,26 @@
}
/**
+ * @param ptr: the pointer to cast
+ * @return The integer value of the pointer
+ *
+ * This function casts a pointer into an integer. If there should be an
+ * information lost, i.e. the content of the pointer does not fit into
+ * an integer, it will print a runtime warning.
+ */
+int
+ewl_cast_pointer_to_integer(void *ptr)
+{
+ DENTER_FUNCTION(DLEVEL_STABLE);
+
+ if (sizeof(int) != sizeof(void *)
+ && (((unsigned long) ptr) & 0xffffffff) != 0)
+ DWARNING("Information lost while casting a pointer to an int");
+
+ DRETURN_INT((int)((long int)ptr), DLEVEL_STABLE);
+}
+
+/**
* @param argc: the argc passed into the main function
* @param argv: the argv passed into the main function
* @return Returns 1 or greater on success, 0 otherwise.
===================================================================
RCS file: /cvs/e/e17/libs/ewl/src/lib/ewl_macros.h,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -3 -r1.14 -r1.15
--- ewl_macros.h 7 May 2008 13:38:24 -0000 1.14
+++ ewl_macros.h 14 Jul 2008 17:27:20 -0000 1.15
@@ -115,6 +115,24 @@
#endif
/**
+ * @def PTRINT_TO_INT(x)
+ * Does a cast from a pointer to the type int, if debug is enabled at
+ * compile-time it will add a runtime check if any information get lost.
+ */
+#ifdef EWL_ENABLE_DEBUG
+# define PTRINT_TO_INT(x) ewl_cast_pointer_to_integer(x)
+#else
+# define PTRINT_TO_INT(x) ((int)((long int)(x)))
+#endif
+
+/**
+ * @def PRTINT_TO_INT(x)
+ * Does a cast from a pointer to the type int, if debug is enabled at
+ * compile-time it will add a runtime check if any information get lost.
+ */
+#define INT_TO_PTRINT(x) ((void *)((long int)(x)))
+
+/**
* @}
*/
===================================================================
RCS file: /cvs/e/e17/libs/ewl/src/lib/ewl_debug.h,v
retrieving revision 1.34
retrieving revision 1.35
diff -u -3 -r1.34 -r1.35
--- ewl_debug.h 7 May 2008 13:38:23 -0000 1.34
+++ ewl_debug.h 14 Jul 2008 17:27:20 -0000 1.35
@@ -14,6 +14,7 @@
void ewl_print_warning(void);
void ewl_segv(void);
void ewl_backtrace(void);
+int ewl_cast_pointer_to_integer(void *ptr);
/**
* The Ewl_Config_Cache structure
-------------------------------------------------------------------------
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