| /*- |
| * Copyright (c) 1982, 1986, 1990, 1991, 1993 |
| * The Regents of the University of California. All rights reserved. |
| * (c) UNIX System Laboratories, Inc. |
| * All or some portions of this file are derived from material licensed |
| * to the University of California by American Telephone and Telegraph |
| * Co. or Unix System Laboratories, Inc. and are reproduced herein with |
| * the permission of UNIX System Laboratories, Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 4. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * |
| * @(#)kern_synch.c 8.9 (Berkeley) 5/19/95 |
| */ |
| |
| #include <sys/bsd_cdefs.h> |
| //__FBSDID("$FreeBSD$"); |
| |
| #include <sys/bsd_param.h> |
| #include <sys/bsd_lock.h> |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <sys/time.h> |
| #include "host_serv.h" |
| |
| |
| //#define UPTCP_SLEEP_DEBUG |
| #ifndef UPTCP_SLEEP_DEBUG |
| #define UPTCP_SLEEP_DEBUG_PRINT(fmt, args...) |
| #else |
| #include <sys/bsd_malloc.h> |
| #include <sys/bsd_socket.h> |
| #include <sys/bsd_socketvar.h> |
| #include <net/bsd_vnet.h> |
| #include <netinet/bsd_tcp_var.h> |
| |
| #define UPTCP_SLEEP_DEBUG_PRINT(op, iden, wmsg) \ |
| do{ \ |
| struct timeval t; \ |
| gettimeofday(&t, NULL); \ |
| unsigned long ts = t.tv_sec*1000000 + t.tv_usec; \ |
| printf("[%14lu]%6s: addr=%p %s - [%lu - %lu]\n", ts, op, iden, wmsg, V_tcpstat.tcps_sndpack, V_tcpstat.tcps_rcvpack);\ |
| }while(0) |
| #endif |
| |
| /* |
| * General sleep call. Suspends the current thread until a wakeup is |
| * performed on the specified identifier. The thread will then be made |
| * runnable with the specified priority. Sleeps at most timo/hz seconds |
| * (0 means no timeout). If pri includes PCATCH flag, signals are checked |
| * before and after sleeping, else signals are not checked. Returns 0 if |
| * awakened, EWOULDBLOCK if the timeout expires. If PCATCH is set and a |
| * signal needs to be delivered, ERESTART is returned if the current system |
| * call should be restarted if possible, and EINTR is returned if the system |
| * call should be interrupted by the signal (return EINTR). |
| * |
| * The lock argument is unlocked before the caller is suspended, and |
| * re-locked before _sleep() returns. If priority includes the PDROP |
| * flag the lock is not re-locked before returning. |
| */ |
| int |
| _sleep(void *ident, struct lock_object *lock, int priority, |
| const char *wmesg, int timo) |
| { |
| |
| UPTCP_SLEEP_DEBUG_PRINT("sleep", ident, lock->lo_name); |
| |
| return host_pthread_cond_wait(ident, lock); |
| } |
| |
| |
| /* |
| * Make all threads sleeping on the specified identifier runnable. |
| */ |
| void |
| wakeup(void *ident) |
| { |
| UPTCP_SLEEP_DEBUG_PRINT("wakeup", ident, "NA"); |
| |
| host_pthread_cond_signal(ident); |
| } |
| |
| |
| /* |
| * Make a thread sleeping on the specified identifier runnable. |
| * May wake more than one thread if a target thread is currently |
| * swapped out. |
| */ |
| void |
| wakeup_one(void *ident) |
| { |
| host_pthread_cond_signal(ident); |
| } |
| |