X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fmacro.h;h=6caecab29538c3983e655b4f806efc6a88bbd466;hb=df41aaf9a2b195c9a8bb6fca6672cbf25bc147fb;hp=3cf17bb8675b59b8b6b9f8d36bcc5c0c1fee16c7;hpb=44b601bc79e46722bc0f0862ee0ce34a2284ef11;p=elogind.git

diff --git a/src/shared/macro.h b/src/shared/macro.h
index 3cf17bb86..6caecab29 100644
--- a/src/shared/macro.h
+++ b/src/shared/macro.h
@@ -44,7 +44,6 @@
 #define _public_ __attribute__ ((visibility("default")))
 #define _hidden_ __attribute__ ((visibility("hidden")))
 #define _weakref_(x) __attribute__((weakref(#x)))
-#define _introspect_(x) __attribute__((section("introspect." x)))
 #define _alignas_(x) __attribute__((aligned(__alignof(x))))
 #define _cleanup_(x) __attribute__((cleanup(x)))
 
@@ -54,6 +53,11 @@
 #define XSTRINGIFY(x) #x
 #define STRINGIFY(x) XSTRINGIFY(x)
 
+#define XCONCATENATE(x, y) x ## y
+#define CONCATENATE(x, y) XCONCATENATE(x, y)
+
+#define UNIQUE(prefix) CONCATENATE(prefix, __LINE__)
+
 /* Rounds up */
 
 #define ALIGN4(l) (((l) + 3) & ~3)
@@ -144,24 +148,14 @@ static inline size_t ALIGN_TO(size_t l, size_t ali) {
         } while (false)
 
 #if defined(static_assert)
-#define assert_cc(expr)                         \
-        do {                                    \
-                static_assert(expr, #expr);     \
-        } while (false)
+#define assert_cc(expr) static_assert(expr, #expr)
 #else
-#define assert_cc(expr)                         \
-        do {                                    \
-                switch (0) {                    \
-                case 0:                         \
-                case !!(expr):                  \
-                        ;                       \
-                }                               \
-        } while (false)
+#define assert_cc(expr) struct UNIQUE(_assert_struct_) { char x[(expr) ? 0 : -1]; };
 #endif
 
 #define assert_return(expr, r)                    \
         do {                                      \
-                if (!(expr))                      \
+                if (_unlikely_(!(expr)))          \
                         return (r);               \
         } while (false)
 
@@ -279,13 +273,11 @@ do {                                                                    \
  */
 #define F_TYPE_EQUAL(a, b) (a == (typeof(a)) b)
 
-
 /* Returns the number of chars needed to format variables of the
  * specified type as a decimal string. Adds in extra space for a
  * negative '-' prefix. */
-
 #define DECIMAL_STR_MAX(type)                                           \
-        (1+(sizeof(type) <= 1 ? 3 :                                     \
+        (2+(sizeof(type) <= 1 ? 3 :                                     \
             sizeof(type) <= 2 ? 5 :                                     \
             sizeof(type) <= 4 ? 10 :                                    \
             sizeof(type) <= 8 ? 20 : sizeof(int[-2*(sizeof(type) > 8)])))