/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Nicira, Inc.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#ifndef NDEBUG
#define ovs_assert(CONDITION) \
if (!OVS_LIKELY(CONDITION)) { \
- ovs_assert_failure(SOURCE_LOCATOR, __func__, #CONDITION); \
+ ovs_assert_failure(OVS_SOURCE_LOCATOR, __func__, #CONDITION); \
}
#else
#define ovs_assert(CONDITION) ((void) (CONDITION))
#define OVS_NOT_REACHED() abort()
-/* Expands to a string that looks like "<file>:<line>", e.g. "tmp.c:10".
- *
- * See http://c-faq.com/ansi/stringize.html for an explanation of STRINGIZE and
- * STRINGIZE2. */
-#define SOURCE_LOCATOR __FILE__ ":" STRINGIZE(__LINE__)
-#define STRINGIZE(ARG) STRINGIZE2(ARG)
-#define STRINGIZE2(ARG) #ARG
-
/* Given a pointer-typed lvalue OBJECT, expands to a pointer type that may be
* assigned to OBJECT. */
#ifdef __GNUC__
((char *) &(OBJECT)->MEMBER - (char *) (OBJECT))
#endif
+/* Yields the size of MEMBER within STRUCT. */
+#define MEMBER_SIZEOF(STRUCT, MEMBER) (sizeof(((STRUCT *) NULL)->MEMBER))
+
+/* Yields the offset of the end of MEMBER within STRUCT. */
+#define OFFSETOFEND(STRUCT, MEMBER) \
+ (offsetof(STRUCT, MEMBER) + MEMBER_SIZEOF(STRUCT, MEMBER))
+
/* Given POINTER, the address of the given MEMBER in a STRUCT object, returns
the STRUCT object. */
#define CONTAINER_OF(POINTER, STRUCT, MEMBER) \
ovs_set_program_name(name, OVS_PACKAGE_VERSION)
const char *get_subprogram_name(void);
-void set_subprogram_name(const char *format, ...) OVS_PRINTF_FORMAT(1, 2);
+ void set_subprogram_name(const char *);
void ovs_print_version(uint8_t min_ofp, uint8_t max_ofp);
int hexit_value(int c);
uintmax_t hexits_value(const char *s, size_t n, bool *ok);
+int parse_int_string(const char *s, uint8_t *valuep, int field_width,
+ char **tail);
+
const char *english_list_delimiter(size_t index, size_t total);
char *get_cwd(void);
raw_ctz(uint64_t n)
{
#ifdef _WIN64
- uint32_t r = 0;
+ unsigned long r = 0;
_BitScanForward64(&r, n);
return r;
#else
- uint32_t low = n, high, r = 0;
+ unsigned long low = n, high, r = 0;
if (_BitScanForward(&r, low)) {
return r;
}
raw_clz64(uint64_t n)
{
#ifdef _WIN64
- uint32_t r = 0;
+ unsigned long r = 0;
_BitScanReverse64(&r, n);
return 63 - r;
#else
- uint32_t low, high = n >> 32, r = 0;
+ unsigned long low, high = n >> 32, r = 0;
if (_BitScanReverse(&r, high)) {
return 31 - r;
}
return x & (x - 1);
}
-/* Returns the index of the rightmost 1-bit in 'x' (e.g. 01011000 => 3), or 32
- * if 'x' is 0.
- *
- * Unlike the other functions for rightmost 1-bits, this function only works
- * with 32-bit integers. */
+/* Returns the index of the rightmost 1-bit in 'x' (e.g. 01011000 => 3), or an
+ * undefined value if 'x' is 0. */
static inline int
-rightmost_1bit_idx(uint32_t x)
+rightmost_1bit_idx(uint64_t x)
{
- return ctz32(x);
+ return ctz64(x);
}
-/* Returns the index of the leftmost 1-bit in 'x' (e.g. 01011000 => 6), or 32
- * if 'x' is 0.
- *
- * This function only works with 32-bit integers. */
+/* Returns the index of the leftmost 1-bit in 'x' (e.g. 01011000 => 6), or an
+ * undefined value if 'x' is 0. */
static inline uint32_t
-leftmost_1bit_idx(uint32_t x)
+leftmost_1bit_idx(uint64_t x)
{
- return x ? log_2_floor(x) : 32;
+ return log_2_floor(x);
}
/* Return a ovs_be32 prefix in network byte order with 'plen' highest bits set.
unsigned int n_bits);
unsigned int bitwise_scan(const void *, unsigned int len,
bool target, unsigned int start, unsigned int end);
+int bitwise_rscan(const void *, unsigned int len, bool target,
+ int start, int end);
void bitwise_put(uint64_t value,
void *dst, unsigned int dst_len, unsigned int dst_ofs,
unsigned int n_bits);
uint64_t bitwise_get(const void *src, unsigned int src_len,
unsigned int src_ofs, unsigned int n_bits);
+bool bitwise_get_bit(const void *src, unsigned int len, unsigned int ofs);
+void bitwise_put0(void *dst, unsigned int len, unsigned int ofs);
+void bitwise_put1(void *dst, unsigned int len, unsigned int ofs);
+void bitwise_put_bit(void *dst, unsigned int len, unsigned int ofs, bool);
+void bitwise_toggle_bit(void *dst, unsigned int len, unsigned int ofs);
+
+/* Returns non-zero if the parameters have equal value. */
+static inline int
+ovs_u128_equals(const ovs_u128 *a, const ovs_u128 *b)
+{
+ return (a->u64.hi == b->u64.hi) && (a->u64.lo == b->u64.lo);
+}
+
+/* Returns true if 'val' is 0. */
+static inline bool
+ovs_u128_is_zero(const ovs_u128 *val)
+{
+ return !(val->u64.hi || val->u64.lo);
+}
+
+/* Returns true if 'val' is all ones. */
+static inline bool
+ovs_u128_is_ones(const ovs_u128 *val)
+{
+ return ovs_u128_equals(val, &OVS_U128_MAX);
+}
+
+/* Returns non-zero if the parameters have equal value. */
+static inline int
+ovs_be128_equals(const ovs_be128 *a, const ovs_be128 *b)
+{
+ return (a->be64.hi == b->be64.hi) && (a->be64.lo == b->be64.lo);
+}
+
+/* Returns true if 'val' is 0. */
+static inline bool
+ovs_be128_is_zero(const ovs_be128 *val)
+{
+ return !(val->be64.hi || val->be64.lo);
+}
void xsleep(unsigned int seconds);