X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fmacro.h;h=b3da60f13e51e926c967c5c07c0222080861a801;hp=622c08eeda89ef840f06ac24638ae01873d13469;hb=b853f6e9d60c0eab2038227718ee1ed1266f94de;hpb=e99e38bbdcca3fe5956823bdb3d38544ccf93221

diff --git a/src/macro.h b/src/macro.h
index 622c08eed..b3da60f13 100644
--- a/src/macro.h
+++ b/src/macro.h
@@ -1,4 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
 #ifndef foomacrohfoo
 #define foomacrohfoo
@@ -24,41 +24,62 @@
 
 #include <assert.h>
 #include <sys/types.h>
-
-#define _printf_attr(a,b) __attribute__ ((format (printf, a, b)))
-#define _sentinel __attribute__ ((sentinel))
-#define _noreturn __attribute__((noreturn))
-#define _unused __attribute__ ((unused))
-#define _destructor __attribute__ ((destructor))
-#define _pure __attribute__ ((pure))
-#define _const __attribute__ ((const))
-#define _deprecated __attribute__ ((deprecated))
-#define _packed __attribute__ ((packed))
-#define _malloc __attribute__ ((malloc))
-#define _weak __attribute__ ((weak))
-#define _likely(x) (__builtin_expect(!!(x),1))
-#define _unlikely(x) (__builtin_expect(!!(x),0))
+#include <sys/uio.h>
+#include <inttypes.h>
+
+#define PAGE_SIZE 4096
+
+#define _printf_attr_(a,b) __attribute__ ((format (printf, a, b)))
+#define _sentinel_ __attribute__ ((sentinel))
+#define _noreturn_ __attribute__((noreturn))
+#define _unused_ __attribute__ ((unused))
+#define _destructor_ __attribute__ ((destructor))
+#define _pure_ __attribute__ ((pure))
+#define _const_ __attribute__ ((const))
+#define _deprecated_ __attribute__ ((deprecated))
+#define _packed_ __attribute__ ((packed))
+#define _malloc_ __attribute__ ((malloc))
+#define _weak_ __attribute__ ((weak))
+#define _likely_(x) (__builtin_expect(!!(x),1))
+#define _unlikely_(x) (__builtin_expect(!!(x),0))
+#define _public_ __attribute__ ((visibility("default")))
+#define _hidden_ __attribute__ ((visibility("hidden")))
+#define _weakref_(x) __attribute__((weakref(#x)))
 
 /* Rounds up */
 static inline size_t ALIGN(size_t l) {
         return ((l + sizeof(void*) - 1) & ~(sizeof(void*) - 1));
 }
 
+static inline size_t PAGE_ALIGN(size_t l) {
+        return ((l + PAGE_SIZE - 1) & ~(PAGE_SIZE -1));
+}
+
 #define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
 
+#ifndef MAX
 #define MAX(a,b)                                \
         __extension__ ({                        \
                         typeof(a) _a = (a);     \
                         typeof(b) _b = (b);     \
                         _a > _b ? _a : _b;      \
                 })
+#endif
+
+#define MAX3(a,b,c)                             \
+        MAX(MAX(a,b),c)
 
+#ifndef MIN
 #define MIN(a,b)                                \
         __extension__ ({                        \
                         typeof(a) _a = (a);     \
                         typeof(b) _b = (b);     \
                         _a < _b ? _a : _b;      \
                 })
+#endif
+
+#define MIN3(a,b,c)                             \
+        MIN(MIN(a,b),c)
 
 #define CLAMP(x, low, high)                                             \
         __extension__ ({                                                \
@@ -70,7 +91,7 @@ static inline size_t ALIGN(size_t l) {
 
 #define assert_se(expr)                                                 \
         do {                                                            \
-                if (_unlikely(!(expr)))                                 \
+                if (_unlikely_(!(expr)))                                \
                         log_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
                                    "Assertion '%s' failed at %s:%u, function %s(). Aborting.", \
                                    #expr , __FILE__, __LINE__, __PRETTY_FUNCTION__); \
@@ -106,12 +127,18 @@ static inline size_t ALIGN(size_t l) {
 #define PTR_TO_UINT32(p) ((uint32_t) ((uintptr_t) (p)))
 #define UINT32_TO_PTR(u) ((void*) ((uintptr_t) (u)))
 
+#define PTR_TO_ULONG(p) ((unsigned long) ((uintptr_t) (p)))
+#define ULONG_TO_PTR(u) ((void*) ((uintptr_t) (u)))
+
 #define PTR_TO_INT(p) ((int) ((intptr_t) (p)))
 #define INT_TO_PTR(u) ((void*) ((intptr_t) (u)))
 
 #define TO_INT32(p) ((int32_t) ((intptr_t) (p)))
 #define INT32_TO_PTR(u) ((void*) ((intptr_t) (u)))
 
+#define PTR_TO_LONG(p) ((long) ((intptr_t) (p)))
+#define LONG_TO_PTR(u) ((void*) ((intptr_t) (u)))
+
 #define memzero(x,l) (memset((x), 0, (l)))
 #define zero(x) (memzero(&(x), sizeof(x)))
 
@@ -125,6 +152,34 @@ static inline size_t ALIGN(size_t l) {
                 _i->iov_len = strlen(_s);       \
         } while(false);
 
+static inline size_t IOVEC_TOTAL_SIZE(const struct iovec *i, unsigned n) {
+        unsigned j;
+        size_t r = 0;
+
+        for (j = 0; j < n; j++)
+                r += i[j].iov_len;
+
+        return r;
+}
+
+static inline size_t IOVEC_INCREMENT(struct iovec *i, unsigned n, size_t k) {
+        unsigned j;
+
+        for (j = 0; j < n; j++) {
+                size_t sub;
+
+                if (_unlikely_(k <= 0))
+                        break;
+
+                sub = MIN(i[j].iov_len, k);
+                i[j].iov_len -= sub;
+                i[j].iov_base = (uint8_t*) i[j].iov_base + sub;
+                k -= sub;
+        }
+
+        return k;
+}
+
 #include "log.h"
 
 #endif