/*
- * Copyright (c) 2008, 2009 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010 Nicira Networks.
*
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
*/
#ifndef UTIL_H
extern const char *program_name;
+/* Returns the number of elements in ARRAY. */
#define ARRAY_SIZE(ARRAY) (sizeof ARRAY / sizeof *ARRAY)
-#define ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y) * (Y))
+
+/* Returns X / Y, rounding up. X must be nonnegative to round correctly. */
+#define DIV_ROUND_UP(X, Y) (((X) + ((Y) - 1)) / (Y))
+
+/* Returns X rounded up to the nearest multiple of Y. */
+#define ROUND_UP(X, Y) (DIV_ROUND_UP(X, Y) * (Y))
+
+/* Returns X rounded down to the nearest multiple of Y. */
#define ROUND_DOWN(X, Y) ((X) / (Y) * (Y))
+
+/* Returns true if X is a power of 2, otherwise false. */
#define IS_POW2(X) ((X) && !((X) & ((X) - 1)))
#ifndef MIN
#endif
#define NOT_REACHED() abort()
-#define NOT_IMPLEMENTED() abort()
-#define NOT_TESTED() ((void) 0) /* XXX should print a message. */
/* Given POINTER, the address of the given MEMBER in a STRUCT object, returns
the STRUCT object. */
#define CONTAINER_OF(POINTER, STRUCT, MEMBER) \
- ((STRUCT *) ((char *) (POINTER) - offsetof (STRUCT, MEMBER)))
+ ((STRUCT *) (void *) ((char *) (POINTER) - offsetof (STRUCT, MEMBER)))
#ifdef __cplusplus
extern "C" {
void set_program_name(const char *);
-void ovs_print_version(char *date, char *time,
+void ovs_print_version(char *date, char *time,
uint8_t min_ofp, uint8_t max_ofp);
#define OVS_PRINT_VERSION(min_ofp, max_ofp) \
ovs_print_version(__DATE__, __TIME__, (min_ofp), (max_ofp))
void out_of_memory(void) NO_RETURN;
void *xmalloc(size_t) MALLOC_LIKE;
void *xcalloc(size_t, size_t) MALLOC_LIKE;
+void *xzalloc(size_t) MALLOC_LIKE;
void *xrealloc(void *, size_t);
void *xmemdup(const void *, size_t) MALLOC_LIKE;
char *xmemdup0(const char *, size_t) MALLOC_LIKE;
bool str_to_ulong(const char *, int base, unsigned long *);
bool str_to_ullong(const char *, int base, unsigned long long *);
+bool str_to_double(const char *, double *);
+
+int hexit_value(int c);
+
+char *get_cwd(void);
+char *dir_name(const char *file_name);
+char *abs_file_name(const char *dir, const char *file_name);
+
+void ignore(bool x OVS_UNUSED);
+
#ifdef __cplusplus
}
#endif