include/util.h

   1 /*
   2  * Copyright (C) 1996-2014 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_UTIL_H
  10 #define SQUID_UTIL_H
  11
  12 #if HAVE_TIME_H
  13 #include <time.h>
  14 #endif
  15 #if HAVE_ARPA_INET_H
  16 #include <arpa/inet.h>
  17 #endif
  18
  19 SQUIDCEXTERN int tvSubUsec(struct timeval, struct timeval);
  20 SQUIDCEXTERN double tvSubDsec(struct timeval, struct timeval);
  21 SQUIDCEXTERN void Tolower(char *);
  22 #if defined(__cplusplus)
  23 /*
  24  * Any code using libstdc++ must have externally resolvable overloads
  25  * for void * operator new - which means in the .o for the binary,
  26  * or in a shared library. static libs don't propogate the symbol
  27  * so, look in the translation unit containing main() in squid
  28  * for the extern version in squid
  29  */
  30 #if !defined(_SQUID_EXTERNNEW_)
  31 #if defined(__GNUC_STDC_INLINE__) || defined(__GNUC_GNU_INLINE__)
  32 #define _SQUID_EXTERNNEW_ extern inline __attribute__((gnu_inline))
  33 #else
  34 #define _SQUID_EXTERNNEW_ extern inline
  35 #endif
  36 #endif
  37 #include "SquidNew.h"
  38 #endif
  39
  40 SQUIDCEXTERN time_t parse_iso3307_time(const char *buf);
  41
  42 SQUIDCEXTERN double xpercent(double part, double whole);
  43 SQUIDCEXTERN int xpercentInt(double part, double whole);
  44 SQUIDCEXTERN double xdiv(double nom, double denom);
  45
  46 SQUIDCEXTERN const char *xitoa(int num);
  47 SQUIDCEXTERN const char *xint64toa(int64_t num);
  48
  49 typedef struct {
  50     size_t count;
  51     size_t bytes;
  52     size_t gb;
  53 } gb_t;
  54
  55 /* gb_type operations */
  56 #define gb_flush_limit (0x3FFFFFFF)
  57 #define gb_inc(gb, delta) { if ((gb)->bytes > gb_flush_limit || delta > gb_flush_limit) gb_flush(gb); (gb)->bytes += delta; (gb)->count++; }
  58 #define gb_incb(gb, delta) { if ((gb)->bytes > gb_flush_limit || delta > gb_flush_limit) gb_flush(gb); (gb)->bytes += delta; }
  59 #define gb_incc(gb, delta) { if ((gb)->bytes > gb_flush_limit || delta > gb_flush_limit) gb_flush(gb); (gb)->count+= delta; }
  60 extern double gb_to_double(const gb_t *);
  61 SQUIDCEXTERN const char *double_to_str(char *buf, int buf_size, double value);
  62 extern const char *gb_to_str(const gb_t *);
  63 extern void gb_flush(gb_t *);  /* internal, do not use this */
  64
  65 /*
  66  * Returns the amount of known allocated memory
  67  */
  68 int statMemoryAccounted(void);
  69
  70 SQUIDCEXTERN unsigned int RoundTo(const unsigned int num, const unsigned int what);
  71
  72 #endif /* SQUID_UTIL_H */