agora inbox for postgres@postgres.berkeley.edu
help / color / mirror / Atom feedFrom: Paul M. Aoki <aoki@CS.Berkeley.EDU>
To: postgres-arch@postgres.Berkeley.EDU
Subject: notes on hpux port
Date: Thu, 17 Aug 95 20:13:26 -0700
Message-ID: <199508180313.UAA04651@faerie.CS.Berkeley.EDU> (raw)
hpux thread info from sipb.mit.edu pthreads package.
/* ==== machdep.h ============================================================
* Copyright (c) 1993 Chris Provenzano, proven@athena.mit.edu
*
*/
#include <unistd.h>
#include <setjmp.h>
#include <sys/time.h>
/*
* Stuff for compiling
*/
#if defined(__GNUC__)
#if defined(__cplusplus)
#define __BEGIN_DECLS extern "C" {
#define __END_DECLS };
#define __P(protos) protos
#else
#define __BEGIN_DECLS
#define __END_DECLS
#if defined(__STDC__)
#define __P(protos) protos
#else
#define __P(protos)
#define const __const
#define inline __inline
#define signed __signed
#define volatile __volatile
#endif
#endif
#else /* !__GNUC__ */
#define __BEGIN_DECLS
#define __END_DECLS
#define const
#define inline
#define signed
#define volatile
#endif
/*
* The first machine dependent functions are the SEMAPHORES
* needing the test and set instruction.
*
* Note: The set and clear defines are backwards.
*/
#define SEMAPHORE_CLEAR { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, \
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
#define SEMAPHORE_SET 0
#define SEMAPHORE_TEST_AND_SET(lock) \
({ \
long real_addr; \
long temp; \
\
real_addr = ((long)((*lock) + 15) & ~15); \
\
__asm__ volatile("ldcwx %%r0(%2),%0" \
:"=r" (temp) \
:"0" (temp),"r" (real_addr)); \
temp ? 0 : 1; \
})
#define SEMAPHORE_RESET(lock) \
({ \
char *real_addr; \
\
real_addr = (char*)((long)((*lock) + 15) & ~15); \
*real_addr = 0xff; \
})
/*
* New types
* The semaphore is really 16 bytes but must be aligened on a 16 byte
* boundary. By specifing 31 bytes the macros can frob it correctly.
*/
typedef char semaphore[31];
/*
* Macros for sigset_t
*/
#define SIGMAX 31
#define SIG_ANY(sig) \
({ \
sigset_t *sig_addr = &sig; \
int ret = 0; \
int i; \
\
for (i = 1; i <= SIGMAX; i++) { \
if (sigismember(sig_addr, i)) { \
ret = 1; \
break; \
} \
} \
ret; \
})
/*
* New Strutures
*/
struct machdep_pthread {
void *(*start_routine)(void *);
void *start_argument;
void *machdep_stack;
struct itimerval machdep_timer;
long machdep_state[_JBLEN];
};
/*
* Static machdep_pthread initialization values.
* For initial thread only.
*/
#define MACHDEP_PTHREAD_INIT \
{ NULL, NULL, NULL, { { 0, 0 }, { 0, 100000 } }, 0 }
/*
* Minimum stack size
*/
#define PTHREAD_STACK_MIN 4096
/*
* Some fd flag defines that are necessary to distinguish between posix
* behavior and bsd4.3 behavior.
*/
#define __FD_NONBLOCK O_NONBLOCK
/*
* page size
*/
#define getpagesize() 4096
/*
* New functions
*/
__BEGIN_DECLS
#if defined(PTHREAD_KERNEL)
int machdep_save_state __P((void));
#endif
__END_DECLS
--
Paul M. Aoki | University of California at Berkeley
aoki@CS.Berkeley.EDU | Dept. of EECS, Computer Science Division (#1776)
| Berkeley, CA 94720-1776
reply
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: postgres@postgres.berkeley.edu
Cc: aoki@CS.Berkeley.EDU, postgres-arch@postgres.Berkeley.EDU
Subject: Re: notes on hpux port
In-Reply-To: <199508180313.UAA04651@faerie.CS.Berkeley.EDU>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox