Re: LOCK Fixes/Break on FreeBSD 4.2-STABLE - Mailing list pgsql-hackers
From | Larry Rosenman |
---|---|
Subject | Re: LOCK Fixes/Break on FreeBSD 4.2-STABLE |
Date | |
Msg-id | 20001128223629.A4223@lerami.lerctr.org Whole thread Raw |
In response to | Re: LOCK Fixes/Break on FreeBSD 4.2-STABLE (Larry Rosenman <ler@lerctr.org>) |
Responses |
Re: LOCK Fixes/Break on FreeBSD 4.2-STABLE
(Tom Lane <tgl@sss.pgh.pa.us>)
|
List | pgsql-hackers |
* Larry Rosenman <ler@lerctr.org> [001128 22:33]: > * Tom Lane <tgl@sss.pgh.pa.us> [001128 22:31]: > > Larry Rosenman <ler@lerctr.org> writes: > > > The last batch of commits break on FreeBSD 4.2-STABLE. > > > /usr/include/machine/lock.h:148: conflicting types for `s_lock' > > > ../../../src/include/storage/s_lock.h:402: previous declaration of `s_lock' > > > > That's odd. s_lock has been declared the same way right along in our > > code; I didn't change it. Can you see what's changed to cause a > > conflict where there was none before? > This maybe Matt Dillon's recent commit to FBSD then. Either way, it's > a problem on -STABLE 4.2 of FreeBSD. Nope, I just checked, and that hadn't changed either: $ ls -l sys/i386/include/lock.h sys/sys/lock.h -rw-r--r-- 1 root wheel 4981 Oct 3 21:43 sys/i386/include/lock.h -rw-r--r-- 1 root wheel 9365 Oct 3 21:43 sys/sys/lock.h $ ls -l /usr/include/machine/lock.h -r--r--r-- 1 root wheel 4981 Oct 4 00:24 /usr/include/machine/lock.h $ > > Here is the "Current" /usr/include/machine/lock.h: > > /* > * Copyright (c) 1997, by Steve Passe > * All rights reserved. > * > * 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. The name of the developer may NOT be used to endorse or promote products > * derived from this software without specific prior written permission. > * > * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. > * > * $FreeBSD: src/sys/i386/include/lock.h,v 1.11.2.2 2000/09/30 02:49:34 ps Exp $ > */ > > > #ifndef _MACHINE_LOCK_H_ > #define _MACHINE_LOCK_H_ > > > #ifdef LOCORE > > #ifdef SMP > > #define MPLOCKED lock ; > > /* > * Some handy macros to allow logical organization. > */ > > #define MP_LOCK call _get_mplock > > #define MP_TRYLOCK \ > pushl $_mp_lock ; /* GIANT_LOCK */ \ > call _MPtrylock ; /* try to get lock */ \ > add $4, %esp > > #define MP_RELLOCK \ > movl $_mp_lock,%edx ; /* GIANT_LOCK */ \ > call _MPrellock_edx > > /* > * Protects the IO APIC and apic_imen as a critical region. > */ > #define IMASK_LOCK \ > pushl $_imen_lock ; /* address of lock */ \ > call _s_lock ; /* MP-safe */ \ > addl $4, %esp > > #define IMASK_UNLOCK \ > movl $0, _imen_lock > > #else /* SMP */ > > #define MPLOCKED /* NOP */ > > #define MP_LOCK /* NOP */ > > #endif /* SMP */ > > #else /* LOCORE */ > > #ifdef SMP > > #include <machine/smptests.h> /** xxx_LOCK */ > > /* > * Locks regions protected in UP kernel via cli/sti. > */ > #ifdef USE_MPINTRLOCK > #define MPINTR_LOCK() s_lock(&mpintr_lock) > #define MPINTR_UNLOCK() s_unlock(&mpintr_lock) > #else > #define MPINTR_LOCK() > #define MPINTR_UNLOCK() > #endif /* USE_MPINTRLOCK */ > > /* > * sio/cy lock. > * XXX should rc (RISCom/8) use this? > */ > #ifdef USE_COMLOCK > #define COM_LOCK() s_lock(&com_lock) > #define COM_UNLOCK() s_unlock(&com_lock) > #define COM_DISABLE_INTR() \ > { __asm __volatile("cli" : : : "memory"); COM_LOCK(); } > #define COM_ENABLE_INTR() \ > { COM_UNLOCK(); __asm __volatile("sti"); } > #else > #define COM_LOCK() > #define COM_UNLOCK() > #define COM_DISABLE_INTR() disable_intr() > #define COM_ENABLE_INTR() enable_intr() > #endif /* USE_COMLOCK */ > > /* > * Clock hardware/struct lock. > * XXX pcaudio and friends still need this lock installed. > */ > #ifdef USE_CLOCKLOCK > #define CLOCK_LOCK() s_lock(&clock_lock) > #define CLOCK_UNLOCK() s_unlock(&clock_lock) > #define CLOCK_DISABLE_INTR() \ > { __asm __volatile("cli" : : : "memory"); CLOCK_LOCK(); } > #define CLOCK_ENABLE_INTR() \ > { CLOCK_UNLOCK(); __asm __volatile("sti"); } > #else > #define CLOCK_LOCK() > #define CLOCK_UNLOCK() > #define CLOCK_DISABLE_INTR() disable_intr() > #define CLOCK_ENABLE_INTR() enable_intr() > #endif /* USE_CLOCKLOCK */ > > #else /* SMP */ > > #define MPINTR_LOCK() > #define MPINTR_UNLOCK() > > #define COM_LOCK() > #define COM_UNLOCK() > #define CLOCK_LOCK() > #define CLOCK_UNLOCK() > > #endif /* SMP */ > > /* > * Simple spin lock. > * It is an error to hold one of these locks while a process is sleeping. > */ > struct simplelock { > volatile int lock_data; > }; > > /* functions in simplelock.s */ > void s_lock_init __P((struct simplelock *)); > void s_lock __P((struct simplelock *)); > int s_lock_try __P((struct simplelock *)); > void ss_lock __P((struct simplelock *)); > void ss_unlock __P((struct simplelock *)); > void s_lock_np __P((struct simplelock *)); > void s_unlock_np __P((struct simplelock *)); > > /* inline simplelock functions */ > static __inline void > s_unlock(struct simplelock *lkp) > { > lkp->lock_data = 0; > } > > /* global data in mp_machdep.c */ > extern struct simplelock imen_lock; > extern struct simplelock cpl_lock; > extern struct simplelock fast_intr_lock; > extern struct simplelock intr_lock; > extern struct simplelock clock_lock; > extern struct simplelock com_lock; > extern struct simplelock mpintr_lock; > extern struct simplelock mcount_lock; > > #if !defined(SIMPLELOCK_DEBUG) && MAXCPU > 1 > /* > * This set of defines turns on the real functions in i386/isa/apic_ipl.s. > */ > #define simple_lock_init(alp) s_lock_init(alp) > #define simple_lock(alp) s_lock(alp) > #define simple_lock_try(alp) s_lock_try(alp) > #define simple_unlock(alp) s_unlock(alp) > > #endif /* !SIMPLELOCK_DEBUG && MAXCPU > 1 */ > > #endif /* LOCORE */ > > #endif /* !_MACHINE_LOCK_H_ */ > > > > regards, tom lane > -- > Larry Rosenman http://www.lerctr.org/~ler > Phone: +1 972-414-9812 E-Mail: ler@lerctr.org > US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749 -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: ler@lerctr.org US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749
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