|
有3M大吧!
现给大家一个pdf的介绍. 喜欢的gtalk.
##############################################
Sep 1 09:28 1988 unix/param.h Page 1 Sep 1 09:28 1988 unix/param.h Page 2
0100 /* fundamental constants: do not change */ 0150
0101 0151 /* priorities: do not alter much */
0102 0152
0103 #define USIZE 16 /* size of user block (*64) */ 0153
0104 #define NULL 0 0154 #define PSWP -100
0105 #define NODEV (-1) 0155 #define PINOD -90
0106 #define ROOTINO 1 /* i number of all roots */ 0156 #define PRIBIO -50
0107 #define DIRSIZ 14 /* max characters per directory */ 0157 #define PPIPE 1
0108 0158 #define PWAIT 40
0109 0159 #define PSLEP 90
0110 /* signals: do not change */ 0160 #define PUSER 100
0111 0161
0112 0162 /* Certain processor registers */
0113 #define NSIG 20 0163
0114 #define SIGHUP 1 /* hangup */ 0164 #define PS 0177776
0115 #define SIGINT 2 /* interrupt (rubout) */ 0165 #define KL 0177560
0116 #define SIGQIT 3 /* quit (FS) */ 0166 #define SW 0177570
0117 #define SIGINS 4 /* illegal instruction */ 0167
0118 #define SIGTRC 5 /* trace or breakpoint */ 0168 /* ------------------------- */
0119 #define SIGIOT 6 /* iot */ 0169
0120 #define SIGEMT 7 /* emt */ 0170 /* structures to access integers : */
0121 #define SIGFPT 8 /* floating point exception */ 0171
0122 #define SIGKIL 9 /* kill */ 0172
0123 #define SIGBUS 10 /* bus error */ 0173 /* single integer */
0124 #define SIGSEG 11 /* segmentation violation */ 0174
0125 #define SIGSYS 12 /* sys */ 0175 struct { int integ; };
0126 #define SIGPIPE 13 /* end of pipe */ 0176
0127 0177
0128 /* tunable variables */ 0178 /* in bytes */
0129 0179
0130 #define NBUF 15 /* size of buffer cache */ 0180 struct { char lobyte; char hibyte; };
0131 #define NINODE 100 /* number of in core inodes */ 0181
0132 #define NFILE 100 /* number of in core file structures */ 0182
0133 #define NMOUNT 5 /* number of mountable file systems */ 0183 /* as a sequence */
0134 #define NEXEC 3 /* number of simultaneous exec’s */ 0184
0135 #define MAXMEM (64*32) /* max core per process; 0185 struct { int r[]; };
0136 first number is kw */ 0186
0137 #define SSIZE 20 /* initial stack size (*64 bytes) */ 0187
0138 #define SINCR 20 /* increment of stack (*64 bytes) */ 0188 /* ------------------------- */
0139 #define NOFILE 15 /* max open files per process */ 0189
0140 #define CANBSIZ 256 /* max size of typewriter line */ 0190
0141 #define CMAPSIZ 100 /* size of core allocation area */ 0191
0142 #define SMAPSIZ 100 /* size of swap allocation area */ 0192
0143 #define NCALL 20 /* max simultaneous time callouts */ 0193
0144 #define NPROC 50 /* max number of processes */ 0194
0145 #define NTEXT 40 /* max number of pure texts */ 0195
0146 #define NCLIST 100 /* max total clist size */ 0196
0147 #define HZ 60 /* Ticks/second of the clock */ 0197
0148 0198
0149 0199
Reproduced under license from the Western Electric Company, NY Reproduced under license from the Western Electric Company, NY
Copyright, J. Lions, 1976 Copyright, J. Lions, 1976
Sheet 01 Sheet 01 |
|