FreeBSD/Linux Kernel Cross Reference
sys/contrib/dpdk_rte_lpm/rte_common.h

     /* SPDX-License-Identifier: BSD-3-Clause
      * Copyright(c) 2010-2019 Intel Corporation
      */
     
     #ifndef _RTE_COMMON_H_
     #define _RTE_COMMON_H_
     
     /**
      * @file
     *
     * Generic, commonly-used macro and inline function definitions
     * for DPDK.
     */
    
    #ifdef __cplusplus
    extern "C" {
    #endif
    
    //#include <rte_config.h>
    
    /* OS specific include */
    //#include <rte_os.h>
    
    #ifndef typeof
    #define typeof __typeof__
    #endif
    
    #ifndef asm
    #define asm __asm__
    #endif
    
    /** C extension macro for environments lacking C11 features. */
    #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L
    #define RTE_STD_C11 __extension__
    #else
    #define RTE_STD_C11
    #endif
    
    /*
     * RTE_TOOLCHAIN_GCC is defined if the target is built with GCC,
     * while a host application (like pmdinfogen) may have another compiler.
     * RTE_CC_IS_GNU is true if the file is compiled with GCC,
     * no matter it is a target or host application.
     */
    #define RTE_CC_IS_GNU 0
    #if defined __clang__
    #define RTE_CC_CLANG
    #elif defined __INTEL_COMPILER
    #define RTE_CC_ICC
    #elif defined __GNUC__
    #define RTE_CC_GCC
    #undef RTE_CC_IS_GNU
    #define RTE_CC_IS_GNU 1
    #endif
    #if RTE_CC_IS_GNU
    #define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 +  \
                    __GNUC_PATCHLEVEL__)
    #endif
    
    /**
     * Force alignment
     */
    #define __rte_aligned(a) __attribute__((__aligned__(a)))
    
    #ifdef RTE_ARCH_STRICT_ALIGN
    typedef uint64_t unaligned_uint64_t __rte_aligned(1);
    typedef uint32_t unaligned_uint32_t __rte_aligned(1);
    typedef uint16_t unaligned_uint16_t __rte_aligned(1);
    #else
    typedef uint64_t unaligned_uint64_t;
    typedef uint32_t unaligned_uint32_t;
    typedef uint16_t unaligned_uint16_t;
    #endif
    
    /**
     * Force a structure to be packed
     */
    #define __rte_packed __attribute__((__packed__))
    
    /******* Macro to mark functions and fields scheduled for removal *****/
    #define __rte_deprecated        __attribute__((__deprecated__))
    
    /**
     * Mark a function or variable to a weak reference.
     */
    #define __rte_weak __attribute__((__weak__))
    
    /**
     * Force symbol to be generated even if it appears to be unused.
     */
    #define __rte_used __attribute__((used))
    
    /*********** Macros to eliminate unused variable warnings ********/
    
    /**
     * short definition to mark a function parameter unused
     */
    #define __rte_unused __attribute__((__unused__))
    
   /**
    * definition to mark a variable or function parameter as used so
    * as to avoid a compiler warning
    */
   #define RTE_SET_USED(x) (void)(x)
   
   /**
    * Check format string and its arguments at compile-time.
    *
    * GCC on Windows assumes MS-specific format string by default,
    * even if the underlying stdio implementation is ANSI-compliant,
    * so this must be overridden.
    */
   #if RTE_CC_IS_GNU
   #define __rte_format_printf(format_index, first_arg) \
           __attribute__((format(gnu_printf, format_index, first_arg)))
   #else
   #define __rte_format_printf(format_index, first_arg) \
           __attribute__((format(printf, format_index, first_arg)))
   #endif
   
   #define RTE_PRIORITY_LOG 101
   #define RTE_PRIORITY_BUS 110
   #define RTE_PRIORITY_CLASS 120
   #define RTE_PRIORITY_LAST 65535
   
   #define RTE_PRIO(prio) \
           RTE_PRIORITY_ ## prio
   
   /**
    * Run function before main() with high priority.
    *
    * @param func
    *   Constructor function.
    * @param prio
    *   Priority number must be above 100.
    *   Lowest number is the first to run.
    */
   #ifndef RTE_INIT_PRIO /* Allow to override from EAL */
   #define RTE_INIT_PRIO(func, prio) \
   static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)
   #endif
   
   /**
    * Run function before main() with low priority.
    *
    * The constructor will be run after prioritized constructors.
    *
    * @param func
    *   Constructor function.
    */
   #define RTE_INIT(func) \
           RTE_INIT_PRIO(func, LAST)
   
   /**
    * Run after main() with low priority.
    *
    * @param func
    *   Destructor function name.
    * @param prio
    *   Priority number must be above 100.
    *   Lowest number is the last to run.
    */
   #ifndef RTE_FINI_PRIO /* Allow to override from EAL */
   #define RTE_FINI_PRIO(func, prio) \
   static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
   #endif
   
   /**
    * Run after main() with high priority.
    *
    * The destructor will be run *before* prioritized destructors.
    *
    * @param func
    *   Destructor function name.
    */
   #define RTE_FINI(func) \
           RTE_FINI_PRIO(func, LAST)
   
   /**
    * Hint never returning function
    */
   #define __rte_noreturn __attribute__((noreturn))
   
   /**
    * Force a function to be inlined
    */
   #define __rte_always_inline inline __attribute__((always_inline))
   
   /**
    * Force a function to be noinlined
    */
   #define __rte_noinline __attribute__((noinline))
   
   /**
    * Hint function in the hot path
    */
   #define __rte_hot __attribute__((hot))
   
   /**
    * Hint function in the cold path
    */
   #define __rte_cold __attribute__((cold))
   
   /*********** Macros for pointer arithmetic ********/
   
   /**
    * add a byte-value offset to a pointer
    */
   #define RTE_PTR_ADD(ptr, x) ((void*)((uintptr_t)(ptr) + (x)))
   
   /**
    * subtract a byte-value offset from a pointer
    */
   #define RTE_PTR_SUB(ptr, x) ((void*)((uintptr_t)ptr - (x)))
   
   /**
    * get the difference between two pointer values, i.e. how far apart
    * in bytes are the locations they point two. It is assumed that
    * ptr1 is greater than ptr2.
    */
   #define RTE_PTR_DIFF(ptr1, ptr2) ((uintptr_t)(ptr1) - (uintptr_t)(ptr2))
   
   /**
    * Workaround to cast a const field of a structure to non-const type.
    */
   #define RTE_CAST_FIELD(var, field, type) \
           (*(type *)((uintptr_t)(var) + offsetof(typeof(*(var)), field)))
   
   /*********** Macros/static functions for doing alignment ********/
   
   
   /**
    * Macro to align a pointer to a given power-of-two. The resultant
    * pointer will be a pointer of the same type as the first parameter, and
    * point to an address no higher than the first parameter. Second parameter
    * must be a power-of-two value.
    */
   #define RTE_PTR_ALIGN_FLOOR(ptr, align) \
           ((typeof(ptr))RTE_ALIGN_FLOOR((uintptr_t)ptr, align))
   
   /**
    * Macro to align a value to a given power-of-two. The resultant value
    * will be of the same type as the first parameter, and will be no
    * bigger than the first parameter. Second parameter must be a
    * power-of-two value.
    */
   #define RTE_ALIGN_FLOOR(val, align) \
           (typeof(val))((val) & (~((typeof(val))((align) - 1))))
   
   /**
    * Macro to align a pointer to a given power-of-two. The resultant
    * pointer will be a pointer of the same type as the first parameter, and
    * point to an address no lower than the first parameter. Second parameter
    * must be a power-of-two value.
    */
   #define RTE_PTR_ALIGN_CEIL(ptr, align) \
           RTE_PTR_ALIGN_FLOOR((typeof(ptr))RTE_PTR_ADD(ptr, (align) - 1), align)
   
   /**
    * Macro to align a value to a given power-of-two. The resultant value
    * will be of the same type as the first parameter, and will be no lower
    * than the first parameter. Second parameter must be a power-of-two
    * value.
    */
   #define RTE_ALIGN_CEIL(val, align) \
           RTE_ALIGN_FLOOR(((val) + ((typeof(val)) (align) - 1)), align)
   
   /**
    * Macro to align a pointer to a given power-of-two. The resultant
    * pointer will be a pointer of the same type as the first parameter, and
    * point to an address no lower than the first parameter. Second parameter
    * must be a power-of-two value.
    * This function is the same as RTE_PTR_ALIGN_CEIL
    */
   #define RTE_PTR_ALIGN(ptr, align) RTE_PTR_ALIGN_CEIL(ptr, align)
   
   /**
    * Macro to align a value to a given power-of-two. The resultant
    * value will be of the same type as the first parameter, and
    * will be no lower than the first parameter. Second parameter
    * must be a power-of-two value.
    * This function is the same as RTE_ALIGN_CEIL
    */
   #define RTE_ALIGN(val, align) RTE_ALIGN_CEIL(val, align)
   
   /**
    * Macro to align a value to the multiple of given value. The resultant
    * value will be of the same type as the first parameter and will be no lower
    * than the first parameter.
    */
   #define RTE_ALIGN_MUL_CEIL(v, mul) \
           (((v + (typeof(v))(mul) - 1) / ((typeof(v))(mul))) * (typeof(v))(mul))
   
   /**
    * Macro to align a value to the multiple of given value. The resultant
    * value will be of the same type as the first parameter and will be no higher
    * than the first parameter.
    */
   #define RTE_ALIGN_MUL_FLOOR(v, mul) \
           ((v / ((typeof(v))(mul))) * (typeof(v))(mul))
   
   /**
    * Macro to align value to the nearest multiple of the given value.
    * The resultant value might be greater than or less than the first parameter
    * whichever difference is the lowest.
    */
   #define RTE_ALIGN_MUL_NEAR(v, mul)                              \
           ({                                                      \
                   typeof(v) ceil = RTE_ALIGN_MUL_CEIL(v, mul);    \
                   typeof(v) floor = RTE_ALIGN_MUL_FLOOR(v, mul);  \
                   (ceil - v) > (v - floor) ? floor : ceil;        \
           })
   
   /**
    * Checks if a pointer is aligned to a given power-of-two value
    *
    * @param ptr
    *   The pointer whose alignment is to be checked
    * @param align
    *   The power-of-two value to which the ptr should be aligned
    *
    * @return
    *   True(1) where the pointer is correctly aligned, false(0) otherwise
    */
   static inline int
   rte_is_aligned(void *ptr, unsigned align)
   {
           return RTE_PTR_ALIGN(ptr, align) == ptr;
   }
   
   /*********** Macros for compile type checks ********/
   
   /**
    * Triggers an error at compilation time if the condition is true.
    */
   #define RTE_BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
   
   /*********** Cache line related macros ********/
   
   /** Cache line mask. */
   #define RTE_CACHE_LINE_MASK (RTE_CACHE_LINE_SIZE-1)
   
   /** Return the first cache-aligned value greater or equal to size. */
   #define RTE_CACHE_LINE_ROUNDUP(size) \
           (RTE_CACHE_LINE_SIZE * ((size + RTE_CACHE_LINE_SIZE - 1) / \
           RTE_CACHE_LINE_SIZE))
   
   /** Cache line size in terms of log2 */
   #if RTE_CACHE_LINE_SIZE == 64
   #define RTE_CACHE_LINE_SIZE_LOG2 6
   #elif RTE_CACHE_LINE_SIZE == 128
   #define RTE_CACHE_LINE_SIZE_LOG2 7
   #else
   #error "Unsupported cache line size"
   #endif
   
   /** Minimum Cache line size. */
   #define RTE_CACHE_LINE_MIN_SIZE 64
   
   /** Force alignment to cache line. */
   #define __rte_cache_aligned __rte_aligned(RTE_CACHE_LINE_SIZE)
   
   /** Force minimum cache line alignment. */
   #define __rte_cache_min_aligned __rte_aligned(RTE_CACHE_LINE_MIN_SIZE)
   
   /*********** PA/IOVA type definitions ********/
   
   /** Physical address */
   typedef uint64_t phys_addr_t;
   #define RTE_BAD_PHYS_ADDR ((phys_addr_t)-1)
   
   /**
    * IO virtual address type.
    * When the physical addressing mode (IOVA as PA) is in use,
    * the translation from an IO virtual address (IOVA) to a physical address
    * is a direct mapping, i.e. the same value.
    * Otherwise, in virtual mode (IOVA as VA), an IOMMU may do the translation.
    */
   typedef uint64_t rte_iova_t;
   #define RTE_BAD_IOVA ((rte_iova_t)-1)
   
   /*********** Structure alignment markers ********/
   
   /** Generic marker for any place in a structure. */
   __extension__ typedef void    *RTE_MARKER[0];
   /** Marker for 1B alignment in a structure. */
   __extension__ typedef uint8_t  RTE_MARKER8[0];
   /** Marker for 2B alignment in a structure. */
   __extension__ typedef uint16_t RTE_MARKER16[0];
   /** Marker for 4B alignment in a structure. */
   __extension__ typedef uint32_t RTE_MARKER32[0];
   /** Marker for 8B alignment in a structure. */
   __extension__ typedef uint64_t RTE_MARKER64[0];
   
   /**
    * Combines 32b inputs most significant set bits into the least
    * significant bits to construct a value with the same MSBs as x
    * but all 1's under it.
    *
    * @param x
    *    The integer whose MSBs need to be combined with its LSBs
    * @return
    *    The combined value.
    */
   static inline uint32_t
   rte_combine32ms1b(register uint32_t x)
   {
           x |= x >> 1;
           x |= x >> 2;
           x |= x >> 4;
           x |= x >> 8;
           x |= x >> 16;
   
           return x;
   }
   
   /**
    * Combines 64b inputs most significant set bits into the least
    * significant bits to construct a value with the same MSBs as x
    * but all 1's under it.
    *
    * @param v
    *    The integer whose MSBs need to be combined with its LSBs
    * @return
    *    The combined value.
    */
   static inline uint64_t
   rte_combine64ms1b(register uint64_t v)
   {
           v |= v >> 1;
           v |= v >> 2;
           v |= v >> 4;
           v |= v >> 8;
           v |= v >> 16;
           v |= v >> 32;
   
           return v;
   }
   
   /*********** Macros to work with powers of 2 ********/
   
   /**
    * Macro to return 1 if n is a power of 2, 0 otherwise
    */
   #define RTE_IS_POWER_OF_2(n) ((n) && !(((n) - 1) & (n)))
   
   /**
    * Returns true if n is a power of 2
    * @param n
    *     Number to check
    * @return 1 if true, 0 otherwise
    */
   static inline int
   rte_is_power_of_2(uint32_t n)
   {
           return n && !(n & (n - 1));
   }
   
   /**
    * Aligns input parameter to the next power of 2
    *
    * @param x
    *   The integer value to align
    *
    * @return
    *   Input parameter aligned to the next power of 2
    */
   static inline uint32_t
   rte_align32pow2(uint32_t x)
   {
           x--;
           x = rte_combine32ms1b(x);
   
           return x + 1;
   }
   
   /**
    * Aligns input parameter to the previous power of 2
    *
    * @param x
    *   The integer value to align
    *
    * @return
    *   Input parameter aligned to the previous power of 2
    */
   static inline uint32_t
   rte_align32prevpow2(uint32_t x)
   {
           x = rte_combine32ms1b(x);
   
           return x - (x >> 1);
   }
   
   /**
    * Aligns 64b input parameter to the next power of 2
    *
    * @param v
    *   The 64b value to align
    *
    * @return
    *   Input parameter aligned to the next power of 2
    */
   static inline uint64_t
   rte_align64pow2(uint64_t v)
   {
           v--;
           v = rte_combine64ms1b(v);
   
           return v + 1;
   }
   
   /**
    * Aligns 64b input parameter to the previous power of 2
    *
    * @param v
    *   The 64b value to align
    *
    * @return
    *   Input parameter aligned to the previous power of 2
    */
   static inline uint64_t
   rte_align64prevpow2(uint64_t v)
   {
           v = rte_combine64ms1b(v);
   
           return v - (v >> 1);
   }
   
   /*********** Macros for calculating min and max **********/
   
   /**
    * Macro to return the minimum of two numbers
    */
   #define RTE_MIN(a, b) \
           __extension__ ({ \
                   typeof (a) _a = (a); \
                   typeof (b) _b = (b); \
                   _a < _b ? _a : _b; \
           })
   
   /**
    * Macro to return the maximum of two numbers
    */
   #define RTE_MAX(a, b) \
           __extension__ ({ \
                   typeof (a) _a = (a); \
                   typeof (b) _b = (b); \
                   _a > _b ? _a : _b; \
           })
   
   /*********** Other general functions / macros ********/
   
   /**
    * Searches the input parameter for the least significant set bit
    * (starting from zero).
    * If a least significant 1 bit is found, its bit index is returned.
    * If the content of the input parameter is zero, then the content of the return
    * value is undefined.
    * @param v
    *     input parameter, should not be zero.
    * @return
    *     least significant set bit in the input parameter.
    */
   static inline uint32_t
   rte_bsf32(uint32_t v)
   {
           return (uint32_t)__builtin_ctz(v);
   }
   
   /**
    * Searches the input parameter for the least significant set bit
    * (starting from zero). Safe version (checks for input parameter being zero).
    *
    * @warning ``pos`` must be a valid pointer. It is not checked!
    *
    * @param v
    *     The input parameter.
    * @param pos
    *     If ``v`` was not 0, this value will contain position of least significant
    *     bit within the input parameter.
    * @return
    *     Returns 0 if ``v`` was 0, otherwise returns 1.
    */
   static inline int
   rte_bsf32_safe(uint64_t v, uint32_t *pos)
   {
           if (v == 0)
                   return 0;
   
           *pos = rte_bsf32(v);
           return 1;
   }
   
   /**
    * Return the rounded-up log2 of a integer.
    *
    * @note Contrary to the logarithm mathematical operation,
    * rte_log2_u32(0) == 0 and not -inf.
    *
    * @param v
    *     The input parameter.
    * @return
    *     The rounded-up log2 of the input, or 0 if the input is 0.
    */
   static inline uint32_t
   rte_log2_u32(uint32_t v)
   {
           if (v == 0)
                   return 0;
           v = rte_align32pow2(v);
           return rte_bsf32(v);
   }
   
   
   /**
    * Return the last (most-significant) bit set.
    *
    * @note The last (most significant) bit is at position 32.
    * @note rte_fls_u32(0) = 0, rte_fls_u32(1) = 1, rte_fls_u32(0x80000000) = 32
    *
    * @param x
    *     The input parameter.
    * @return
    *     The last (most-significant) bit set, or 0 if the input is 0.
    */
   static inline int
   rte_fls_u32(uint32_t x)
   {
           return (x == 0) ? 0 : 32 - __builtin_clz(x);
   }
   
   /**
    * Searches the input parameter for the least significant set bit
    * (starting from zero).
    * If a least significant 1 bit is found, its bit index is returned.
    * If the content of the input parameter is zero, then the content of the return
    * value is undefined.
    * @param v
    *     input parameter, should not be zero.
    * @return
    *     least significant set bit in the input parameter.
    */
   static inline int
   rte_bsf64(uint64_t v)
   {
           return (uint32_t)__builtin_ctzll(v);
   }
   
   /**
    * Searches the input parameter for the least significant set bit
    * (starting from zero). Safe version (checks for input parameter being zero).
    *
    * @warning ``pos`` must be a valid pointer. It is not checked!
    *
    * @param v
    *     The input parameter.
    * @param pos
    *     If ``v`` was not 0, this value will contain position of least significant
    *     bit within the input parameter.
    * @return
    *     Returns 0 if ``v`` was 0, otherwise returns 1.
    */
   static inline int
   rte_bsf64_safe(uint64_t v, uint32_t *pos)
   {
           if (v == 0)
                   return 0;
   
           *pos = rte_bsf64(v);
           return 1;
   }
   
   /**
    * Return the last (most-significant) bit set.
    *
    * @note The last (most significant) bit is at position 64.
    * @note rte_fls_u64(0) = 0, rte_fls_u64(1) = 1,
    *       rte_fls_u64(0x8000000000000000) = 64
    *
    * @param x
    *     The input parameter.
    * @return
    *     The last (most-significant) bit set, or 0 if the input is 0.
    */
   static inline int
   rte_fls_u64(uint64_t x)
   {
           return (x == 0) ? 0 : 64 - __builtin_clzll(x);
   }
   
   /**
    * Return the rounded-up log2 of a 64-bit integer.
    *
    * @note Contrary to the logarithm mathematical operation,
    * rte_log2_u64(0) == 0 and not -inf.
    *
    * @param v
    *     The input parameter.
    * @return
    *     The rounded-up log2 of the input, or 0 if the input is 0.
    */
   static inline uint32_t
   rte_log2_u64(uint64_t v)
   {
           if (v == 0)
                   return 0;
           v = rte_align64pow2(v);
           /* we checked for v being 0 already, so no undefined behavior */
           return rte_bsf64(v);
   }
   
   #ifndef offsetof
   /** Return the offset of a field in a structure. */
   #define offsetof(TYPE, MEMBER)  __builtin_offsetof (TYPE, MEMBER)
   #endif
   
   /**
    * Return pointer to the wrapping struct instance.
    *
    * Example:
    *
    *  struct wrapper {
    *      ...
    *      struct child c;
    *      ...
    *  };
    *
    *  struct child *x = obtain(...);
    *  struct wrapper *w = container_of(x, struct wrapper, c);
    */
   #ifndef container_of
   #define container_of(ptr, type, member) __extension__ ({                \
                           const typeof(((type *)0)->member) *_ptr = (ptr); \
                           __rte_unused type *_target_ptr =        \
                                   (type *)(ptr);                          \
                           (type *)(((uintptr_t)_ptr) - offsetof(type, member)); \
                   })
   #endif
   
   /**
    * Get the size of a field in a structure.
    *
    * @param type
    *   The type of the structure.
    * @param field
    *   The field in the structure.
    * @return
    *   The size of the field in the structure, in bytes.
    */
   #define RTE_SIZEOF_FIELD(type, field) (sizeof(((type *)0)->field))
   
   #define _RTE_STR(x) #x
   /** Take a macro value and get a string version of it */
   #define RTE_STR(x) _RTE_STR(x)
   
   /**
    * ISO C helpers to modify format strings using variadic macros.
    * This is a replacement for the ", ## __VA_ARGS__" GNU extension.
    * An empty %s argument is appended to avoid a dangling comma.
    */
   #define RTE_FMT(fmt, ...) fmt "%.0s", __VA_ARGS__ ""
   #define RTE_FMT_HEAD(fmt, ...) fmt
   #define RTE_FMT_TAIL(fmt, ...) __VA_ARGS__
   
   /** Mask value of type "tp" for the first "ln" bit set. */
   #define RTE_LEN2MASK(ln, tp)    \
           ((tp)((uint64_t)-1 >> (sizeof(uint64_t) * CHAR_BIT - (ln))))
   
   /** Number of elements in the array. */
   #define RTE_DIM(a)      (sizeof (a) / sizeof ((a)[0]))
   
   /**
    * Converts a numeric string to the equivalent uint64_t value.
    * As well as straight number conversion, also recognises the suffixes
    * k, m and g for kilobytes, megabytes and gigabytes respectively.
    *
    * If a negative number is passed in  i.e. a string with the first non-black
    * character being "-", zero is returned. Zero is also returned in the case of
    * an error with the strtoull call in the function.
    *
    * @param str
    *     String containing number to convert.
    * @return
    *     Number.
    */
   #if 0
   static inline uint64_t
   rte_str_to_size(const char *str)
   {
           char *endptr;
           unsigned long long size;
   
           while (isspace((int)*str))
                   str++;
           if (*str == '-')
                   return 0;
   
           errno = 0;
           size = strtoull(str, &endptr, 0);
           if (errno)
                   return 0;
   
           if (*endptr == ' ')
                   endptr++; /* allow 1 space gap */
   
           switch (*endptr){
           case 'G': case 'g': size *= 1024; /* fall-through */
           case 'M': case 'm': size *= 1024; /* fall-through */
           case 'K': case 'k': size *= 1024; /* fall-through */
           default:
                   break;
           }
           return size;
   }
   #endif
   
   /**
    * Function to terminate the application immediately, printing an error
    * message and returning the exit_code back to the shell.
    *
    * This function never returns
    *
    * @param exit_code
    *     The exit code to be returned by the application
    * @param format
    *     The format string to be used for printing the message. This can include
    *     printf format characters which will be expanded using any further parameters
    *     to the function.
    */
   __rte_noreturn void
   rte_exit(int exit_code, const char *format, ...)
           __rte_format_printf(2, 3);
   
   #ifdef __cplusplus
   }
   #endif
   
   #endif

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