91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
#pragma once
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#include <exception>
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#include <string>
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#include <netinet/in.h>
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/* Debugging -- taken from babeld */
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extern int debug;
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#if defined(__GNUC__) && (__GNUC__ >= 3)
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#define ATTRIBUTE(x) __attribute__ (x)
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#define LIKELY(_x) __builtin_expect(!!(_x), 1)
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#define UNLIKELY(_x) __builtin_expect(!!(_x), 0)
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#else
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#define ATTRIBUTE(x) /**/
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#define LIKELY(_x) !!(_x)
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#define UNLIKELY(_x) !!(_x)
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#endif
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#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
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#define debugf(...) \
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do { \
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if(UNLIKELY(debug >= 2)) do_debugf(2, __VA_ARGS__); \
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} while(0)
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#define kdebugf(...) \
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do { \
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if(UNLIKELY(debug >= 3)) do_debugf(3, __VA_ARGS__); \
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} while(0)
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#elif defined __GNUC__
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#define debugf(_args...) \
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do { \
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if(UNLIKELY(debug >= 2)) do_debugf(2, _args); \
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} while(0)
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#define kdebugf(_args...) \
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do { \
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if(UNLIKELY(debug >= 3)) do_debugf(3, _args); \
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} while(0)
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#else
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static inline void debugf(const char *format, ...) { return; }
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static inline void kdebugf(const char *format, ...) { return; }
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#endif
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void do_debugf(int level, const char *format, ...);
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/** format_address -- taken from babeld */
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const char* format_address(const unsigned char* address);
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/** remove the upper bit from a microsecond timestamp, to conform with the
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* packet header timestamp format. */
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inline uint32_t to_us_timestamp(uint32_t clock_output) {
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return clock_output & 0x7fffffff;
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}
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/** in6_addr hash & equality */
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namespace std {
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template<>
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class hash<in6_addr> {
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public:
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size_t operator()(const in6_addr& addr) const;
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};
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template<>
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class equal_to<in6_addr> {
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public:
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bool operator()(const in6_addr& lhs, const in6_addr& rhs) const;
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};
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}
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/** MsgException -- an exception bearing a passed explanation message
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*
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* If `is_perror` is true, then the `strerror` corresponding message is appened
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* to the message in `what()`.
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*/
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class MsgException : public std::exception {
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public:
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MsgException(const std::string& msg, int code=0, bool is_perror=false);
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int errcode() const noexcept { return _code; }
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const char* what() const noexcept { return _what.c_str(); };
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private:
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std::string _msg;
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int _code;
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std::string _what;
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};
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