X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Fmacro.h;h=fd3762eed4aae50976bff45148966dbde4cb6764;hb=bc9fd78c7bfc39881e19457e476393635f8b0442;hp=9e94495dd6f5760c884c3bd345bf9fa3fe181630;hpb=3deadb918f1ac034e4edf03e1ba88468ee76bd62;p=elogind.git

diff --git a/src/shared/macro.h b/src/shared/macro.h
index 9e94495dd..fd3762eed 100644
--- a/src/shared/macro.h
+++ b/src/shared/macro.h
@@ -53,6 +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)
@@ -143,25 +148,17 @@ 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))                      \
-                        return (r);               \
+#define assert_return(expr, r)                                          \
+        do {                                                            \
+                if (_unlikely_(!(expr))) {                              \
+                        log_assert_failed_return(#expr, __FILE__, __LINE__, __PRETTY_FUNCTION__); \
+                        return (r);                                     \
+                }                                                       \
         } while (false)
 
 #define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
@@ -272,7 +269,7 @@ do {                                                                    \
         }                                                               \
 } while(false)
 
- /* Because statfs.t_type can be int on some architecures, we have to cast
+ /* Because statfs.t_type can be int on some architectures, we have to cast
   * the const magic to the type, otherwise the compiler warns about
   * signed/unsigned comparison, because the magic can be 32 bit unsigned.
  */
@@ -282,7 +279,7 @@ do {                                                                    \
  * 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)])))
@@ -290,4 +287,18 @@ do {                                                                    \
 #define SET_FLAG(v, flag, b) \
         (v) = (b) ? ((v) | (flag)) : ((v) & ~(flag))
 
+#define IN_SET(x, ...)                                                  \
+        ({                                                              \
+                const typeof(x) _x = (x);                               \
+                unsigned _i;                                            \
+                bool _found = false;                                    \
+                for (_i = 0; _i < sizeof((const typeof(_x)[]) { __VA_ARGS__ })/sizeof(const typeof(_x)); _i++) \
+                        if (((const typeof(_x)[]) { __VA_ARGS__ })[_i] == _x) { \
+                                _found = true;                          \
+                                break;                                  \
+                        }                                               \
+                _found;                                                 \
+        })
+
+
 #include "log.h"