diff options
Diffstat (limited to 'src/backend/storage/ipc.h')
| -rw-r--r-- | src/backend/storage/ipc.h | 53 |
1 files changed, 32 insertions, 21 deletions
diff --git a/src/backend/storage/ipc.h b/src/backend/storage/ipc.h index 36cb3c8f62..174e672e3d 100644 --- a/src/backend/storage/ipc.h +++ b/src/backend/storage/ipc.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: ipc.h,v 1.2 1996/07/20 08:35:24 scrappy Exp $ + * $Id: ipc.h,v 1.3 1996/07/22 22:59:43 scrappy Exp $ * * NOTES * This file is very architecture-specific. This stuff should actually @@ -30,30 +30,22 @@ * atomic test-and-set instruction). However, we have only written * spinlock code for the architectures listed. */ -#if (defined(PORTNAME_aix) || \ +#if defined(PORTNAME_aix) || \ defined(PORTNAME_alpha) || \ + defined(PORTNAME_BSD44_derived) || \ + defined(PORTNAME_bsdi) || \ defined(PORTNAME_hpux) || \ + defined(PORTNAME_i386_solaris) || \ defined(PORTNAME_irix5) || \ + defined(PORTNAME_linux) || \ defined(PORTNAME_next) || \ defined(PORTNAME_sparc) || \ - defined(PORTNAME_sparc_solaris) || \ - (defined(__i386__) && defined(__GNUC__))) && \ - !defined(PORTNAME_i386_solaris) + defined(PORTNAME_sparc_solaris) #define HAS_TEST_AND_SET #endif #if defined(HAS_TEST_AND_SET) -#if defined(PORTNAME_next) -/* - * Use Mach mutex routines since these are, in effect, test-and-set - * spinlocks. - */ -#undef NEVER /* definition in cthreads.h conflicts with parse.h */ -#include <mach/cthreads.h> - -typedef struct mutex slock_t; -#else /* next */ #if defined(PORTNAME_aix) /* * The AIX C library has the cs(3) builtin for compare-and-set that @@ -61,10 +53,12 @@ typedef struct mutex slock_t; */ typedef unsigned int slock_t; #else /* aix */ + #if defined(PORTNAME_alpha) #include <sys/mman.h> typedef msemaphore slock_t; #else /* alpha */ + #if defined(PORTNAME_hpux) /* * The PA-RISC "semaphore" for the LDWCX instruction is 4 bytes aligned @@ -72,29 +66,45 @@ typedef msemaphore slock_t; */ typedef struct { int sem[4]; } slock_t; #else /* hpux */ + #if defined(PORTNAME_irix5) #include <abi_mutex.h> typedef abilock_t slock_t; #else /* irix5 */ + +#if defined(PORTNAME_next) +/* + * Use Mach mutex routines since these are, in effect, test-and-set + * spinlocks. + */ +#undef NEVER /* definition in cthreads.h conflicts with parse.h */ +#include <mach/cthreads.h> +typedef struct mutex slock_t; +#else /* next */ + /* * On all other architectures spinlocks are a single byte. */ typedef unsigned char slock_t; + +#endif /* next */ #endif /* irix5 */ #endif /* hpux */ #endif /* alpha */ #endif /* aix */ -#endif /* next */ extern void S_LOCK(slock_t *lock); extern void S_UNLOCK(slock_t *lock); extern void S_INIT_LOCK(slock_t *lock); -#if defined(PORTNAME_hpux) || defined(PORTNAME_alpha) || defined(PORTNAME_irix5) || defined(PORTNAME_next) +#if defined(PORTNAME_alpha) || \ + defined(PORTNAME_hpux) || \ + defined(PORTNAME_irix5) || \ + defined(PORTNAME_next) extern int S_LOCK_FREE(slock_t *lock); -#else /* PORTNAME_hpux */ +#else #define S_LOCK_FREE(lock) ((*lock) == 0) -#endif /* PORTNAME_hpux */ +#endif #endif /* HAS_TEST_AND_SET */ @@ -108,9 +118,10 @@ extern int S_LOCK_FREE(slock_t *lock); defined(PORTNAME_aix) || \ defined(PORTNAME_alpha) || \ defined(PORTNAME_hpux) || \ + defined(PORTNAME_i386_solaris) || \ defined(PORTNAME_sparc_solaris) || \ - defined(WIN32) || \ - defined(PORTNAME_ultrix4) + defined(PORTNAME_ultrix4) || \ + defined(WIN32) union semun { int val; struct semid_ds *buf; |