ext/kgio/kgio.h

   1 #ifndef KGIO_H
   2 #define KGIO_H
   3
   4 #include <ruby.h>
   5 #ifdef HAVE_RUBY_IO_H
   6 #  include <ruby/io.h>
   7 #else
   8 #  include <rubyio.h>
   9 #endif
  10 #ifdef HAVE_RUBY_THREAD_H
  11 #  include <ruby/thread.h>
  12 #endif
  13 #include <errno.h>
  14 #include <sys/types.h>
  15 #include <sys/socket.h>
  16 #include <sys/un.h>
  17 #include <netinet/in.h>
  18 #include <fcntl.h>
  19 #include <unistd.h>
  20 #include <arpa/inet.h>
  21 #include <assert.h>
  22 #include <netdb.h>
  23
  24 #include "ancient_ruby.h"
  25
  26 void init_kgio_wait(void);
  27 void init_kgio_read(void);
  28 void init_kgio_write(void);
  29 void init_kgio_writev(void);
  30 void init_kgio_accept(void);
  31 void init_kgio_connect(void);
  32 void init_kgio_poll(void);
  33 void init_kgio_tryopen(void);
  34
  35 VALUE kgio_call_wait_writable(VALUE io);
  36 VALUE kgio_call_wait_readable(VALUE io);
  37 #if defined(HAVE_RB_THREAD_CALL_WITHOUT_GVL) && defined(HAVE_RUBY_THREAD_H)
  38 #  define KGIO_WITHOUT_GVL(fn,data1,ubf,data2) \
  39       rb_thread_call_without_gvl((fn),(data1),(ubf),(data2))
  40 #elif defined(HAVE_RB_THREAD_BLOCKING_REGION)
  41 typedef  VALUE(*kgio_blocking_fn_t)(void*);
  42 #  define KGIO_WITHOUT_GVL(fn,data1,ubf,data2) \
  43       rb_thread_blocking_region((kgio_blocking_fn_t)(fn),(data1),(ubf),(data2))
  44 #endif /* HAVE_RB_THREAD_CALL_WITHOUT_GVL || HAVE_RB_THREAD_BLOCKING_REGION */
  45
  46 #if defined(KGIO_WITHOUT_GVL) && defined(HAVE_POLL)
  47 #  define USE_KGIO_POLL
  48 #endif /* USE_KGIO_POLL */
  49
  50 #ifndef HAVE_RB_UPDATE_MAX_FD
  51 #  define rb_update_max_fd(fd) for (;0;)
  52 #endif
  53
  54 /*
  55  * 2012/12/13 - Linux 3.7 was released on 2012/12/10 with TFO.
  56  * Headers distributed with glibc will take some time to catch up and
  57  * be officially released.  Most GNU/Linux distros will take a few months
  58  * to a year longer. "Enterprise" distros will probably take 5-7 years.
  59  * So keep these until 2017 at least...
  60  */
  61 #ifdef __linux__
  62 #  ifndef MSG_FASTOPEN
  63 #    define MSG_FASTOPEN        0x20000000 /* for clients */
  64 #  endif
  65 #  ifndef TCP_FASTOPEN
  66 #    define TCP_FASTOPEN        23 /* for listeners */
  67 #  endif
  68    /* we _may_ have TFO support */
  69 #  define KGIO_TFO_MAYBE (1)
  70 #else /* rely entirely on standard system headers */
  71 #  define KGIO_TFO_MAYBE (0)
  72 #endif
  73
  74 extern unsigned kgio_tfo;
  75 NORETURN(void kgio_raise_empty_bt(VALUE, const char *));
  76 NORETURN(void kgio_wr_sys_fail(const char *));
  77 NORETURN(void kgio_rd_sys_fail(const char *));
  78
  79 /*
  80  * we know MSG_DONTWAIT works properly on all stream sockets under Linux
  81  * we can define this macro for other platforms as people care and
  82  * notice.
  83  */
  84 #  if defined(__linux__)
  85 #    define USE_MSG_DONTWAIT
  86 #  endif
  87
  88 /* prefer rb_str_subseq because we don't use negative offsets */
  89 #ifndef HAVE_RB_STR_SUBSEQ
  90 #define MY_STR_SUBSEQ(str,beg,len) rb_str_substr((str),(beg),(len))
  91 #else
  92 #define MY_STR_SUBSEQ(str,beg,len) rb_str_subseq((str),(beg),(len))
  93 #endif
  94
  95 #endif /* KGIO_H */