Rewrite of write_stream_list(), and writing packed resources

[wimlib] / include / wimlib / util.h

diff --git a/include/wimlib/util.h b/include/wimlib/util.h
index 7bc8359cf61f76f7e07a400c316fb150e61a5d9f..8e9d695ed090a1cbd35ad75e37da425be7663a7b 100644 (file)
--- a/include/wimlib/util.h
+++ b/include/wimlib/util.h
@@ -49,6 +49,10 @@
 
 #define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
 
+/* Maximum number of array elements to allocate on the stack (used in various
+ * places when large temporary buffers are needed).  */
+#define STACK_MAX 32768
+
 #ifdef ENABLE_CUSTOM_MEMORY_ALLOCATOR
 extern void *
 wimlib_malloc(size_t) _malloc_attribute;
@@ -121,12 +125,30 @@ bsr32(u32 n)
 #endif
 }
 
+static inline bool
+is_power_of_2(unsigned long n)
+{
+       return (n != 0 && (n & (n - 1)) == 0);
+
+}
+
 static inline u64
 hash_u64(u64 n)
 {
        return n * 0x9e37fffffffc0001ULL;
 }
 
+static inline int
+cmp_u64(u64 n1, u64 n2)
+{
+       if (n1 < n2)
+               return -1;
+       else if (n1 > n2)
+               return 1;
+       else
+               return 0;
+}
+
 /* is_any_path_separator() - characters treated as path separators in WIM path
  * specifications and capture configuration files (the former will be translated
  * to WIM_PATH_SEPARATOR; the latter will be translated to