mod_fastcgi.h

   1 /*
   2  * $Id: mod_fastcgi.h,v 1.24 2000/05/10 05:21:10 robs Exp $
   3  */
   4
   5 #ifndef MOD_FASTCGI_H
   6 #define MOD_FASTCGI_H
   7
   8 #define MOD_FASTCGI_VERSION "2.2.5"
   9
  10 /*
  11  * # of idle seconds allowed to pass while connected to a FastCGI before aborting
  12  */
  13 #define FCGI_DEFAULT_IDLE_TIMEOUT 30
  14
  15 #define FCGI_DEFAULT_LISTEN_Q 100          /* listen queue (backlog) depth */
  16 #define FCGI_DEFAULT_RESTART_DELAY 5       /* delay between restarts */
  17 #define DEFAULT_INIT_START_DELAY 1         /* delay between starts */
  18 #define FCGI_DEFAULT_PRIORITY 0            /* process priority - not used */
  19 #define FCGI_ERRMSG_LEN 200                /* size of error buffer */
  20 #define FCGI_MIN_EXEC_RETRY_DELAY 10       /* minimum number of seconds to
  21                                               wait before restarting */
  22 #define MAX_INIT_ENV_VARS 64               /* max # of -initial-env options */
  23
  24 /* max number of chars in a line of stderr we can handle from a FastCGI Server */
  25 #define FCGI_SERVER_MAX_STDERR_LINE_LEN 1023
  26
  27 /* size of the buffer the PM uses to read records from the request handlers */
  28 #define FCGI_MSGS_BUFSIZE  32 * 512
  29
  30 #define SERVER_BUFSIZE 8192
  31
  32 /* Dynamic FastCGI applications */
  33 #define FCGI_DEFAULT_MAX_PROCS  50         /* maximum number of processes that
  34                                             * are allowed to run on system */
  35 #define FCGI_DEFAULT_MIN_PROCS  5          /* minimum number of processes that
  36                                             * can be run without being killed
  37                                             * off by the process manager */
  38 #define FCGI_DEFAULT_MAX_CLASS_PROCS 10    /* maximum number of processes that
  39                                             * are allowed to run for a single
  40                                             * application class */
  41 #define FCGI_DEFAULT_KILL_INTERVAL 300     /* number of seconds in which we
  42                                             * should execute the kill policy
  43                                             * by killing off extra instances */
  44 #define FCGI_DEFAULT_UPDATE_INTERVAL 300   /* number of seconds in which we
  45                                             * should recalculate the value of
  46                                             * totalConnTime variable */
  47 #define FCGI_DEFAULT_GAIN 0.5              /* value used as an exponent in the
  48                                             * calculation of the exponentially
  49                                             * decayed connection times;
  50                                             * old values are scaled by
  51                                             * (1-dynamicGain), so making it
  52                                             * smaller weights them more heavily
  53                                             * compared to the current value,
  54                                             * which is scaled by dynamicGain */
  55 #define FCGI_DEFAULT_THRESHHOLD_1 0        /* if load falls below this value
  56                                             * and we have only one instance
  57                                             * running, it is killed off */
  58 #define FCGI_DEFAULT_THRESHHOLD_N 50       /* if load falls below this value
  59                                             * and we have more than one
  60                                             * instances, one is killed off */
  61 #define FCGI_DEFAULT_START_PROCESS_DELAY 3 /* specifies the maximum number of
  62                                             * seconds a server should wait in
  63                                             * attempt to connect to fcgi app
  64                                             * before sending CONN_TIMEOUT */
  65
  66 /*
  67  * # of sec to wait in a non-blocking connect() to the FastCGI application
  68  * before aborting the request, or 0 to indicate that blocking connect()s
  69  * should be used.  Non-blocking connect()s are problematic on many platforms.
  70  */
  71 #define FCGI_DEFAULT_APP_CONN_TIMEOUT 0
  72
  73 #define FCGI_DEFAULT_PROCESS_SLACK 5       /* if this number combined with the
  74                                             * number of the currently running
  75                                             * processes exceeds dynamicMaxProcs, then
  76                                             * the KillDynamicProcs() is invoked */
  77 #define FCGI_DEFAULT_RESTART_DYNAMIC 0     /* Do not restart dynamic processes */
  78 #define FCGI_DEFAULT_AUTOUPDATE 0          /* do not automatically restart
  79                                             * fcgi apps when the binary on the
  80                                             * disk is changed. */
  81
  82 #ifdef WIN32
  83 #define DEFAULT_SOCK_DIR "\\\\.\\pipe\\FastCGI\\"
  84 #else
  85 #define DEFAULT_SOCK_DIR "/tmp/fcgi"       /* Default dir for Unix/Domain sockets */
  86 #endif
  87
  88 #define FCGI_MAGIC_TYPE "application/x-httpd-fcgi"
  89
  90 #if defined(PATH_MAX)
  91 #define FCGI_MAXPATH  PATH_MAX
  92 #elif defined(MAXPATHLEN)
  93 #define FCGI_MAXPATH  MAXPATHLEN
  94 #else
  95 #define FCGI_MAXPATH  512
  96 #endif
  97
  98 /* REQ_COMPLETE is the longest: id, path, user, gid, qtime, start */
  99 #define FCGI_MSG_CRAP  1 + 2 + MAX_USER_NAME_LEN + 1 + MAX_GID_CHAR_LEN + (2 * 11) + 3
 100
 101 #if defined(PIPE_BUF) && PIPE_BUF < FCGI_MAXPATH + FCGI_MSG_CRAP
 102 #define FCGI_MAX_MSG_LEN  PIPE_BUF
 103 #undef FCGI_MAXPATH
 104 #define FCGI_MAXPATH  PIPE_BUF - FCGI_MSG_CRAP
 105 #else
 106 #define FCGI_MAX_MSG_LEN  FCGI_MAXPATH + FCGI_MSG_CRAP
 107 #endif
 108
 109 #ifdef OPEN_MAX
 110 #define MAX_OPEN_FDS OPEN_MAX
 111 #else
 112 #define MAX_OPEN_FDS (128)
 113 #endif
 114
 115 #ifndef SUN_LEN
 116 #define SUN_LEN(sock) \
 117     (sizeof(*(sock)) - sizeof((sock)->sun_path) + strlen((sock)->sun_path))
 118 #endif
 119
 120 #if defined MAXLOGNAME && MAXLOGNAME > 15
 121 #define MAX_USER_NAME_LEN MAXLOGNAME
 122 #elif defined UT_NAMESIZE && UT_NAMESIZE > 15
 123 #define MAX_USER_NAME_LEN UT_NAMESIZE
 124 #else
 125 #define MAX_USER_NAME_LEN 15     /* Max len of user name (suexec w/ ~user), */
 126 #endif                           /* must accomodate uid printed as %ld too */
 127 #define MAX_GID_CHAR_LEN 15      /* Max #chars in a gid printed as %ld */
 128
 129 #ifndef TRUE
 130 #define TRUE  (1)
 131 #endif
 132
 133 #ifndef FALSE
 134 #define FALSE (0)
 135 #endif
 136
 137 #ifndef min
 138 #define min(a,b) ((a) < (b) ? (a) : (b))
 139 #endif
 140
 141 #ifndef max
 142 #define max(a,b) ((a) > (b) ? (a) : (b))
 143 #endif
 144
 145 /* This is (more or less) from http_main.c. It should be in an Apache header */
 146 #ifndef SYS_SIGLIST
 147 #define SYS_SIGLIST ap_sys_siglist
 148 extern const char *ap_sys_siglist[];
 149 #endif
 150
 151 #endif  /* MOD_FASTCGI_H */
 152
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