| sys_pipe.c (116127) | sys_pipe.c (116182) |
|---|---|
| 1/* 2 * Copyright (c) 1996 John S. Dyson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Absolutely no warranty of function or purpose is made by the author 15 * John S. Dyson. 16 * 4. Modifications may be freely made to this file if the above conditions 17 * are met. | 1/* 2 * Copyright (c) 1996 John S. Dyson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * this list of conditions, and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Absolutely no warranty of function or purpose is made by the author 15 * John S. Dyson. 16 * 4. Modifications may be freely made to this file if the above conditions 17 * are met. |
| 18 * 19 * $FreeBSD: head/sys/kern/sys_pipe.c 116127 2003-06-09 21:57:48Z mux $ | |
| 20 */ 21 22/* 23 * This file contains a high-performance replacement for the socket-based 24 * pipes scheme originally used in FreeBSD/4.4Lite. It does not support 25 * all features of sockets, but does do everything that pipes normally 26 * do. 27 */ --- 16 unchanged lines hidden (view full) --- 44 * the copy operation is normally eliminated. 45 * 46 * The constant PIPE_MINDIRECT is chosen to make sure that buffering will 47 * happen for small transfers so that the system will not spend all of 48 * its time context switching. PIPE_SIZE is constrained by the 49 * amount of kernel virtual memory. 50 */ 51 | 18 */ 19 20/* 21 * This file contains a high-performance replacement for the socket-based 22 * pipes scheme originally used in FreeBSD/4.4Lite. It does not support 23 * all features of sockets, but does do everything that pipes normally 24 * do. 25 */ --- 16 unchanged lines hidden (view full) --- 42 * the copy operation is normally eliminated. 43 * 44 * The constant PIPE_MINDIRECT is chosen to make sure that buffering will 45 * happen for small transfers so that the system will not spend all of 46 * its time context switching. PIPE_SIZE is constrained by the 47 * amount of kernel virtual memory. 48 */ 49 |
| 50#include <sys/cdefs.h> 51__FBSDID("$FreeBSD: head/sys/kern/sys_pipe.c 116182 2003-06-11 00:56:59Z obrien $"); 52 |
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| 52#include "opt_mac.h" 53 54#include <sys/param.h> 55#include <sys/systm.h> 56#include <sys/fcntl.h> 57#include <sys/file.h> 58#include <sys/filedesc.h> 59#include <sys/filio.h> --- 1459 unchanged lines hidden --- | 53#include "opt_mac.h" 54 55#include <sys/param.h> 56#include <sys/systm.h> 57#include <sys/fcntl.h> 58#include <sys/file.h> 59#include <sys/filedesc.h> 60#include <sys/filio.h> --- 1459 unchanged lines hidden --- |