/*
- * 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 UTIL_H
#define UTIL_H 1
+#include <arpa/inet.h>
#include <inttypes.h>
#include <limits.h>
#include <stdarg.h>
#include <string.h>
#include "compiler.h"
#include "openvswitch/types.h"
+#include "openvswitch/util.h"
#ifndef va_copy
#ifdef __va_copy
#define BUILD_ASSERT_DECL_GCCONLY(EXPR) ((void) 0)
#endif
-/* Like the standard assert macro, except:
- *
- * - Writes the failure message to the log.
- *
- * - Not affected by NDEBUG. */
+/* Like the standard assert macro, except writes the failure message to the
+ * log. */
+#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); \
}
-void ovs_assert_failure(const char *, const char *, const char *) NO_RETURN;
+#else
+#define ovs_assert(CONDITION) ((void) (CONDITION))
+#endif
+OVS_NO_RETURN void ovs_assert_failure(const char *, const char *, const char *);
/* Casts 'pointer' to 'type' and issues a compiler warning if the cast changes
* anything other than an outermost "const" or "volatile" qualifier.
((void) sizeof ((int) ((POINTER) == (TYPE) (POINTER))), \
(TYPE) (POINTER))
-extern const char *program_name;
+extern char *program_name;
#define __ARRAY_SIZE_NOCHECK(ARRAY) (sizeof(ARRAY) / sizeof((ARRAY)[0]))
#ifdef __GNUC__
#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__
#define ASSIGN_CONTAINER(OBJECT, POINTER, MEMBER) \
((OBJECT) = OBJECT_CONTAINING(POINTER, OBJECT, MEMBER), (void) 0)
+/* As explained in the comment above OBJECT_OFFSETOF(), non-GNUC compilers
+ * like MSVC will complain about un-initialized variables if OBJECT
+ * hasn't already been initialized. To prevent such warnings, INIT_CONTAINER()
+ * can be used as a wrapper around ASSIGN_CONTAINER. */
+#define INIT_CONTAINER(OBJECT, POINTER, MEMBER) \
+ ((OBJECT) = NULL, ASSIGN_CONTAINER(OBJECT, POINTER, MEMBER))
+
/* Given ATTR, and TYPE, cast the ATTR to TYPE by first casting ATTR to
* (void *). This is to suppress the alignment warning issued by clang. */
#define ALIGNED_CAST(TYPE, ATTR) ((TYPE) (void *) (ATTR))
#define PRIXSIZE "zX"
#endif
+#ifndef _WIN32
+typedef uint32_t HANDLE;
+#endif
+
#ifdef __cplusplus
extern "C" {
#endif
-void set_program_name__(const char *name, const char *version,
- const char *date, const char *time);
#define set_program_name(name) \
- set_program_name__(name, VERSION, __DATE__, __TIME__)
+ ovs_set_program_name(name, OVS_PACKAGE_VERSION)
const char *get_subprogram_name(void);
-void set_subprogram_name(const char *format, ...) PRINTF_FORMAT(1, 2);
+ void set_subprogram_name(const char *);
-const char *get_program_version(void);
void ovs_print_version(uint8_t min_ofp, uint8_t max_ofp);
-void out_of_memory(void) NO_RETURN;
+OVS_NO_RETURN void out_of_memory(void);
void *xmalloc(size_t) MALLOC_LIKE;
void *xcalloc(size_t, size_t) MALLOC_LIKE;
void *xzalloc(size_t) MALLOC_LIKE;
void *xmemdup(const void *, size_t) MALLOC_LIKE;
char *xmemdup0(const char *, size_t) MALLOC_LIKE;
char *xstrdup(const char *) MALLOC_LIKE;
-char *xasprintf(const char *format, ...) PRINTF_FORMAT(1, 2) MALLOC_LIKE;
-char *xvasprintf(const char *format, va_list) PRINTF_FORMAT(1, 0) MALLOC_LIKE;
+char *xasprintf(const char *format, ...) OVS_PRINTF_FORMAT(1, 2) MALLOC_LIKE;
+char *xvasprintf(const char *format, va_list) OVS_PRINTF_FORMAT(1, 0) MALLOC_LIKE;
void *x2nrealloc(void *p, size_t *n, size_t s);
void *xmalloc_cacheline(size_t) MALLOC_LIKE;
void ovs_strlcpy(char *dst, const char *src, size_t size);
void ovs_strzcpy(char *dst, const char *src, size_t size);
-void ovs_abort(int err_no, const char *format, ...)
- PRINTF_FORMAT(2, 3) NO_RETURN;
-void ovs_abort_valist(int err_no, const char *format, va_list)
- PRINTF_FORMAT(2, 0) NO_RETURN;
-void ovs_fatal(int err_no, const char *format, ...)
- PRINTF_FORMAT(2, 3) NO_RETURN;
-void ovs_fatal_valist(int err_no, const char *format, va_list)
- PRINTF_FORMAT(2, 0) NO_RETURN;
-void ovs_error(int err_no, const char *format, ...) PRINTF_FORMAT(2, 3);
+OVS_NO_RETURN void ovs_abort(int err_no, const char *format, ...)
+ OVS_PRINTF_FORMAT(2, 3);
+OVS_NO_RETURN void ovs_abort_valist(int err_no, const char *format, va_list)
+ OVS_PRINTF_FORMAT(2, 0);
+OVS_NO_RETURN void ovs_fatal(int err_no, const char *format, ...)
+ OVS_PRINTF_FORMAT(2, 3);
+OVS_NO_RETURN void ovs_fatal_valist(int err_no, const char *format, va_list)
+ OVS_PRINTF_FORMAT(2, 0);
+void ovs_error(int err_no, const char *format, ...) OVS_PRINTF_FORMAT(2, 3);
void ovs_error_valist(int err_no, const char *format, va_list)
- PRINTF_FORMAT(2, 0);
+ OVS_PRINTF_FORMAT(2, 0);
const char *ovs_retval_to_string(int);
const char *ovs_strerror(int);
void ovs_hex_dump(FILE *, const void *, size_t, uintptr_t offset, bool ascii);
bool str_to_llong(const char *, int base, long long *);
bool str_to_uint(const char *, int base, unsigned int *);
-bool ovs_scan(const char *s, const char *format, ...) SCANF_FORMAT(2, 3);
+bool ovs_scan(const char *s, const char *format, ...) OVS_SCANF_FORMAT(2, 3);
+bool ovs_scan_len(const char *s, int *n, const char *format, ...);
bool str_to_double(const char *, double *);
int hexit_value(int c);
-unsigned int hexits_value(const char *s, size_t n, bool *ok);
+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);
+#ifndef _WIN32
char *dir_name(const char *file_name);
char *base_name(const char *file_name);
+#endif
char *abs_file_name(const char *dir, const char *file_name);
char *follow_symlinks(const char *filename);
{
return __builtin_clzll(n);
}
+#elif _MSC_VER
+static inline int
+raw_ctz(uint64_t n)
+{
+#ifdef _WIN64
+ unsigned long r = 0;
+ _BitScanForward64(&r, n);
+ return r;
+#else
+ unsigned long low = n, high, r = 0;
+ if (_BitScanForward(&r, low)) {
+ return r;
+ }
+ high = n >> 32;
+ _BitScanForward(&r, high);
+ return r + 32;
+#endif
+}
+
+static inline int
+raw_clz64(uint64_t n)
+{
+#ifdef _WIN64
+ unsigned long r = 0;
+ _BitScanReverse64(&r, n);
+ return 63 - r;
+#else
+ unsigned long low, high = n >> 32, r = 0;
+ if (_BitScanReverse(&r, high)) {
+ return 31 - r;
+ }
+ low = n;
+ _BitScanReverse(&r, low);
+ return 63 - r;
+#endif
+}
#else
/* Defined in util.c. */
int raw_ctz(uint64_t n);
*
* Unlike the other functions for rightmost 1-bits, this function only works
* with 32-bit integers. */
-static inline uint32_t
+static inline int
rightmost_1bit_idx(uint32_t x)
{
return ctz32(x);
{
return x ? log_2_floor(x) : 32;
}
+
+/* Return a ovs_be32 prefix in network byte order with 'plen' highest bits set.
+ * Shift with 32 is undefined behavior, but we rather use 64-bit shift than
+ * compare. */
+static inline ovs_be32 be32_prefix_mask(int plen)
+{
+ return htonl((uint64_t)UINT32_MAX << (32 - plen));
+}
\f
-bool is_all_zeros(const uint8_t *, size_t);
-bool is_all_ones(const uint8_t *, size_t);
+bool is_all_zeros(const void *, size_t);
+bool is_all_ones(const void *, size_t);
void bitwise_copy(const void *src, unsigned int src_len, unsigned int src_ofs,
void *dst, unsigned int dst_len, unsigned int dst_ofs,
unsigned int n_bits);
unsigned int n_bits);
bool bitwise_is_all_zeros(const void *, unsigned int len, unsigned int ofs,
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);
+}
void xsleep(unsigned int seconds);
projects / cascardo / ovs.git / blobdiff