X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Futil.h;h=0979d98f6e214755eabf977edd21abda68382243;hp=4563d506be1c1c0e9e28a1dfd4038ea425b6604c;hb=7bde3fc590afbdef8f71cd7f8ccbd24172bffc63;hpb=d0e7f039e4ab206b9fd973c983e3fb841fcd2bf2

diff --git a/src/util.h b/src/util.h
index 4563d506..0979d98f 100644
--- a/src/util.h
+++ b/src/util.h
@@ -10,33 +10,40 @@
 
 #ifdef __GNUC__
 #	define WIMLIBAPI __attribute__((visibility("default")))
-#	define NOINLINE __attribute__((noinline))
 #	define ALWAYS_INLINE inline __attribute__((always_inline))
+#	define PACKED __attribute__((packed))
 #	define FORMAT(type, format_str, args_start) \
 			__attribute__((format(type, format_str, args_start)))
 #	if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
 #		define COLD     __attribute__((cold))
-#		define HOT      __attribute__((hot))
 #	else
 #		define COLD
-#		define HOT
 #	endif
 #else
 #	define WIMLIBAPI
-#	define NOINLINE
 #	define ALWAYS_INLINE inline
 #	define FORMAT(type, format_str, args_start)
 #	define COLD
-#	define HOT
+#	define PACKED
 #endif /* __GNUC__ */
 
+
+#if 0
+#ifdef WITH_FUSE
+#define atomic_inc(ptr) \
+	__sync_fetch_and_add(ptr, 1)
+
+#define atomic_dec(ptr) \
+	__sync_sub_and_fetch(ptr, 1)
+#endif
+#endif
+
 #ifndef _NTFS_TYPES_H
 typedef uint8_t  u8;
 typedef uint16_t u16;
 typedef uint32_t u32;
 typedef uint64_t u64;
 #endif
-typedef unsigned uint;
 
 #ifndef min
 #define min(a, b) ({ typeof(a) __a = (a); typeof(b) __b = (b); \
@@ -52,6 +59,25 @@ typedef unsigned uint;
 #define swap(a, b) ({typeof(a) _a = a; (a) = (b); (b) = _a;})
 #endif
 
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#ifndef container_of
+#define container_of(ptr, type, member) ({			\
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+#endif
+
+#define DIV_ROUND_UP(numerator, denominator) \
+	(((numerator) + (denominator) - 1) / (denominator))
+
+#define MODULO_NONZERO(numerator, denominator) \
+	(((numerator) % (denominator)) ? ((numerator) % (denominator)) : (denominator))
+
 #define ARRAY_LEN(array) (sizeof(array) / sizeof((array)[0]))
 
 #define ZERO_ARRAY(array) memset(array, 0, sizeof(array))
@@ -105,6 +131,13 @@ extern void wimlib_warning(const char *format, ...)
 #	define wimlib_assert(expr)
 #endif
 
+#ifdef ENABLE_MORE_ASSERTIONS
+#define wimlib_assert2(expr) wimlib_assert(expr)
+#else
+#define wimlib_assert2(expr)
+#endif
+
+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
 extern void *(*wimlib_malloc_func)(size_t);
@@ -128,12 +161,27 @@ extern char *wimlib_strdup(const char *str);
 #endif /* ENABLE_CUSTOM_MEMORY_ALLOCATOR */
 
 
-extern char *utf16_to_utf8(const char *utf16_str, size_t utf16_len,
-			   size_t *utf8_len_ret);
+/* encoding.c */
 
-extern char *utf8_to_utf16(const char *utf8_str, size_t utf8_len,
-			   size_t *utf16_len_ret);
+#ifdef WITH_NTFS_3G
+static inline int iconv_global_init()
+{
+	return 0;
+}
+
+static inline void iconv_global_cleanup() { }
+#else
+extern int iconv_global_init();
+extern void iconv_global_cleanup();
+#endif
+
+extern int utf16_to_utf8(const char *utf16_str, size_t utf16_nbytes,
+			 char **utf8_str_ret, size_t *utf8_nbytes_ret);
 
+extern int utf8_to_utf16(const char *utf8_str, size_t utf8_nbytes,
+			 char **utf16_str_ret, size_t *utf16_nbytes_ret);
+
+/* util.c */
 extern void randomize_byte_array(u8 *p, size_t n);
 
 extern void randomize_char_array_with_alnum(char p[], size_t n);
@@ -151,13 +199,25 @@ extern void print_string(const void *string, size_t len);
 
 extern int get_num_path_components(const char *path);
 
-extern ssize_t full_write(int fd, const void *buf, size_t n);
-
 static inline void print_byte_field(const u8 field[], size_t len)
 {
 	while (len--)
 		printf("%02hhx", *field++);
 }
 
+static inline u32 bsr32(u32 n)
+{
+#if defined(__x86__) || defined(__x86_64__)
+	asm("bsrl %0, %0;"
+			: "=r"(n)
+			: "0" (n));
+	return n;
+#else
+	u32 pow = 0;
+	while ((n >>= 1) != 0)
+		pow++;
+	return pow;
+#endif
+}
 
 #endif /* _WIMLIB_UTIL_H */