230 lines
6.5 KiB
C
230 lines
6.5 KiB
C
/* $NetBSD: rf_threadid.h,v 1.1 1998/11/13 04:20:35 oster Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Daniel Stodolsky, Mark Holland
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/* rf_threadid.h
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*
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* simple macros to register and lookup integer identifiers for threads.
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* must include pthread.h before including this
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*
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* This is one of two places where the pthreads package is used explicitly.
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* The other is in threadstuff.h
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*
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* none of this is used in the kernel, so it all gets compiled out if KERNEL is defined
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*/
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/* :
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* Log: rf_threadid.h,v
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* Revision 1.17 1996/08/12 20:11:17 jimz
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* fix up for AIX4
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*
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* Revision 1.16 1996/06/05 18:06:02 jimz
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* Major code cleanup. The Great Renaming is now done.
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* Better modularity. Better typing. Fixed a bunch of
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* synchronization bugs. Made a lot of global stuff
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* per-desc or per-array. Removed dead code.
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*
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* Revision 1.15 1996/06/03 23:28:26 jimz
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* more bugfixes
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* check in tree to sync for IPDS runs with current bugfixes
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* there still may be a problem with threads in the script test
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* getting I/Os stuck- not trivially reproducible (runs ~50 times
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* in a row without getting stuck)
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*
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* Revision 1.14 1996/05/30 11:29:41 jimz
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* Numerous bug fixes. Stripe lock release code disagreed with the taking code
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* about when stripes should be locked (I made it consistent: no parity, no lock)
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* There was a lot of extra serialization of I/Os which I've removed- a lot of
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* it was to calculate values for the cache code, which is no longer with us.
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* More types, function, macro cleanup. Added code to properly quiesce the array
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* on shutdown. Made a lot of stuff array-specific which was (bogusly) general
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* before. Fixed memory allocation, freeing bugs.
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*
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* Revision 1.13 1996/05/24 22:17:04 jimz
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* continue code + namespace cleanup
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* typed a bunch of flags
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*
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* Revision 1.12 1996/05/23 21:46:35 jimz
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* checkpoint in code cleanup (release prep)
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* lots of types, function names have been fixed
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*
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* Revision 1.11 1996/05/20 16:13:46 jimz
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* switch to rf_{mutex,cond}_{init,destroy}
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*
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* Revision 1.10 1996/05/18 19:51:34 jimz
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* major code cleanup- fix syntax, make some types consistent,
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* add prototypes, clean out dead code, et cetera
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*
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* Revision 1.9 1996/05/17 13:29:06 jimz
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* did a dance on get_threadid such that it will do the pthread_attr_t -> int
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* assignment without warnings, even on really anal compilers
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*
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* Revision 1.8 1995/12/06 15:15:00 root
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* added copyright info
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*
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*/
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#ifndef _RF__RF_THREADID_H_
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#define _RF__RF_THREADID_H_
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#ifdef _KERNEL
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#define KERNEL
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#endif
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#ifndef SIMULATE
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#ifndef KERNEL
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/*
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* User
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*/
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#include "rf_threadstuff.h"
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extern int rf_numThrsRegistered;
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extern pthread_key_t rf_thread_id_key;
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RF_DECLARE_EXTERN_MUTEX(rf_threadid_mutex)
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#define RF_THREAD_MAX 200
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/* these should be global since a function is declared. Should be invoked at only one place in code */
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#define RF_DECLARE_GLOBAL_THREADID \
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int rf_numThrsRegistered = 0; \
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pthread_key_t rf_thread_id_key; \
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RF_DECLARE_MUTEX(rf_threadid_mutex) \
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RF_Thread_t rf_regdThrs[RF_THREAD_MAX]; \
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void rf_ThreadIdEmptyFunc() {}
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/* setup must be called exactly once, i.e. it can't be called by each thread */
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#ifdef AIX
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typedef void (*pthread_destructor_t)(void *);
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#endif /* AIX */
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#ifdef __osf__
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#define rf_setup_threadid() { \
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extern void rf_ThreadIdEmptyFunc(); \
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pthread_keycreate(&rf_thread_id_key, (pthread_destructor_t) rf_ThreadIdEmptyFunc); \
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rf_mutex_init(&rf_threadid_mutex); /* XXX check return val */ \
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rf_numThrsRegistered = 0; \
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}
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#endif /* __osf__ */
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#ifdef AIX
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#define rf_setup_threadid() { \
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extern void rf_ThreadIdEmptyFunc(); \
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pthread_key_create(&rf_thread_id_key, (pthread_destructor_t) rf_ThreadIdEmptyFunc); \
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rf_mutex_init(&rf_threadid_mutex); /* XXX check return val */ \
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rf_numThrsRegistered = 0; \
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}
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#endif /* AIX */
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#define rf_shutdown_threadid() { \
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rf_mutex_destroy(&rf_threadid_mutex); \
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}
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#ifdef __osf__
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typedef pthread_addr_t RF_THID_cast_t;
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#endif /* __osf__ */
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#ifdef AIX
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typedef void *RF_THID_cast_t;
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#endif /* AIX */
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#define rf_assign_threadid() {RF_LOCK_MUTEX(rf_threadid_mutex); \
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if (pthread_setspecific(rf_thread_id_key, (RF_THID_cast_t) ((unsigned long)(rf_numThrsRegistered++)))) { RF_PANIC(); } \
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RF_UNLOCK_MUTEX(rf_threadid_mutex);}
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#ifdef __osf__
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#define rf_get_threadid(_id_) { \
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RF_THID_cast_t _val; \
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unsigned long _val2; \
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if (pthread_getspecific(rf_thread_id_key, &_val)) \
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RF_PANIC(); \
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(_val2) = (unsigned long)_val; \
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(_id_) = (int)_val2; \
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}
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#endif /* __osf__ */
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#ifdef AIX
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#define rf_get_threadid(_id_) { \
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RF_THID_cast_t _val; \
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unsigned long _val2; \
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_val = pthread_getspecific(rf_thread_id_key); \
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(_val2) = (unsigned long)_val; \
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(_id_) = (int)_val2; \
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}
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#endif /* AIX */
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#else /* KERNEL */
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/*
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* Kernel
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*/
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#ifndef __NetBSD__
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#include <kern/task.h>
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#include <kern/thread.h>
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#include <mach/machine/vm_param.h>
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#endif
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#define RF_DECLARE_GLOBAL_THREADID
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#define rf_setup_threadid()
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#define rf_shutdown_threadid()
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#define rf_assign_threadid()
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#ifdef __NetBSD__
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#define rf_get_threadid(_id_) _id_ = 0;
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#else
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#define rf_get_threadid(_id_) { \
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thread_t thread = current_thread(); \
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_id_ = (int)(((thread->thread_self)>>(8*sizeof(int *)))&0x0fffffff); \
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}
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#endif /* __NetBSD__ */
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#endif /* KERNEL */
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#else /* SIMULATE */
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/*
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* Simulator
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*/
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#include "rf_diskevent.h"
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#define RF_DECLARE_GLOBAL_THREADID
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#define rf_setup_threadid()
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#define rf_shutdown_threadid()
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#define rf_assign_threadid()
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#define rf_get_threadid(_id_) _id_ = rf_GetCurrentOwner()
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#endif /* SIMULATE */
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#endif /* !_RF__RF_THREADID_H_ */
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