Import of CMU's RAIDframe via NetBSD.

1 files changed, 230 insertions, 0 deletions

diff --git a/sys/dev/raidframe/rf_threadid.h b/sys/dev/raidframe/rf_threadid.h
new file mode 100644
index 00000000000..ef77020b554
--- /dev/null
+++ b/sys/dev/raidframe/rf_threadid.h
@@ -0,0 +1,230 @@
+/*	$OpenBSD: rf_threadid.h,v 1.1 1999/01/11 14:29:53 niklas Exp $	*/
+/*	$NetBSD: rf_threadid.h,v 1.1 1998/11/13 04:20:35 oster Exp $	*/
+/*
+ * Copyright (c) 1995 Carnegie-Mellon University.
+ * All rights reserved.
+ *
+ * Author: Daniel Stodolsky, Mark Holland
+ *
+ * Permission to use, copy, modify and distribute this software and
+ * its documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ *
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
+ * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * Carnegie Mellon requests users of this software to return to
+ *
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ *
+ * any improvements or extensions that they make and grant Carnegie the
+ * rights to redistribute these changes.
+ */
+
+/* rf_threadid.h
+ *
+ * simple macros to register and lookup integer identifiers for threads.
+ * must include pthread.h before including this
+ *
+ * This is one of two places where the pthreads package is used explicitly.
+ * The other is in threadstuff.h
+ *
+ * none of this is used in the kernel, so it all gets compiled out if KERNEL is defined
+ */
+
+/* :  
+ * Log: rf_threadid.h,v 
+ * Revision 1.17  1996/08/12 20:11:17  jimz
+ * fix up for AIX4
+ *
+ * Revision 1.16  1996/06/05  18:06:02  jimz
+ * Major code cleanup. The Great Renaming is now done.
+ * Better modularity. Better typing. Fixed a bunch of
+ * synchronization bugs. Made a lot of global stuff
+ * per-desc or per-array. Removed dead code.
+ *
+ * Revision 1.15  1996/06/03  23:28:26  jimz
+ * more bugfixes
+ * check in tree to sync for IPDS runs with current bugfixes
+ * there still may be a problem with threads in the script test
+ * getting I/Os stuck- not trivially reproducible (runs ~50 times
+ * in a row without getting stuck)
+ *
+ * Revision 1.14  1996/05/30  11:29:41  jimz
+ * Numerous bug fixes. Stripe lock release code disagreed with the taking code
+ * about when stripes should be locked (I made it consistent: no parity, no lock)
+ * There was a lot of extra serialization of I/Os which I've removed- a lot of
+ * it was to calculate values for the cache code, which is no longer with us.
+ * More types, function, macro cleanup. Added code to properly quiesce the array
+ * on shutdown. Made a lot of stuff array-specific which was (bogusly) general
+ * before. Fixed memory allocation, freeing bugs.
+ *
+ * Revision 1.13  1996/05/24  22:17:04  jimz
+ * continue code + namespace cleanup
+ * typed a bunch of flags
+ *
+ * Revision 1.12  1996/05/23  21:46:35  jimz
+ * checkpoint in code cleanup (release prep)
+ * lots of types, function names have been fixed
+ *
+ * Revision 1.11  1996/05/20  16:13:46  jimz
+ * switch to rf_{mutex,cond}_{init,destroy}
+ *
+ * Revision 1.10  1996/05/18  19:51:34  jimz
+ * major code cleanup- fix syntax, make some types consistent,
+ * add prototypes, clean out dead code, et cetera
+ *
+ * Revision 1.9  1996/05/17  13:29:06  jimz
+ * did a dance on get_threadid such that it will do the pthread_attr_t -> int
+ * assignment without warnings, even on really anal compilers
+ *
+ * Revision 1.8  1995/12/06  15:15:00  root
+ * added copyright info
+ *
+ */
+
+#ifndef _RF__RF_THREADID_H_
+#define _RF__RF_THREADID_H_
+
+#ifdef _KERNEL
+#define KERNEL
+#endif
+
+#ifndef SIMULATE
+#ifndef KERNEL
+
+/*
+ * User
+ */
+
+#include "rf_threadstuff.h"
+
+extern int rf_numThrsRegistered;
+extern pthread_key_t rf_thread_id_key;
+RF_DECLARE_EXTERN_MUTEX(rf_threadid_mutex)
+
+#define RF_THREAD_MAX 200
+
+/* these should be global since a function is declared.  Should be invoked at only one place in code */
+#define RF_DECLARE_GLOBAL_THREADID           \
+  int rf_numThrsRegistered = 0;           \
+  pthread_key_t rf_thread_id_key;         \
+  RF_DECLARE_MUTEX(rf_threadid_mutex)        \
+  RF_Thread_t rf_regdThrs[RF_THREAD_MAX];    \
+  void rf_ThreadIdEmptyFunc() {}
+
+/* setup must be called exactly once, i.e. it can't be called by each thread */
+
+#ifdef AIX
+typedef void (*pthread_destructor_t)(void *);
+#endif /* AIX */
+
+#ifdef __osf__
+#define rf_setup_threadid() { \
+	extern void rf_ThreadIdEmptyFunc(); \
+	pthread_keycreate(&rf_thread_id_key, (pthread_destructor_t) rf_ThreadIdEmptyFunc); \
+	rf_mutex_init(&rf_threadid_mutex); /* XXX check return val */ \
+	rf_numThrsRegistered = 0; \
+}
+#endif /* __osf__ */
+
+#ifdef AIX
+#define rf_setup_threadid() { \
+	extern void rf_ThreadIdEmptyFunc(); \
+	pthread_key_create(&rf_thread_id_key, (pthread_destructor_t) rf_ThreadIdEmptyFunc); \
+	rf_mutex_init(&rf_threadid_mutex); /* XXX check return val */ \
+	rf_numThrsRegistered = 0; \
+}
+#endif /* AIX */
+
+#define rf_shutdown_threadid() { \
+	rf_mutex_destroy(&rf_threadid_mutex); \
+}
+
+#ifdef __osf__
+typedef pthread_addr_t RF_THID_cast_t;
+#endif /* __osf__ */
+
+#ifdef AIX
+typedef void *RF_THID_cast_t;
+#endif /* AIX */
+
+#define rf_assign_threadid()  {RF_LOCK_MUTEX(rf_threadid_mutex); \
+                            if (pthread_setspecific(rf_thread_id_key, (RF_THID_cast_t) ((unsigned long)(rf_numThrsRegistered++)))) { RF_PANIC(); } \
+                            RF_UNLOCK_MUTEX(rf_threadid_mutex);}
+
+#ifdef __osf__
+#define rf_get_threadid(_id_) { \
+	RF_THID_cast_t _val; \
+	unsigned long _val2; \
+	if (pthread_getspecific(rf_thread_id_key, &_val)) \
+		RF_PANIC(); \
+	(_val2) = (unsigned long)_val; \
+	(_id_) = (int)_val2; \
+}
+#endif /* __osf__ */
+
+#ifdef AIX
+#define rf_get_threadid(_id_) { \
+	RF_THID_cast_t _val; \
+	unsigned long _val2; \
+	_val = pthread_getspecific(rf_thread_id_key); \
+	(_val2) = (unsigned long)_val; \
+	(_id_) = (int)_val2; \
+}
+#endif /* AIX */
+
+#else  /* KERNEL */
+
+/*
+ * Kernel
+ */
+
+#if !defined(__NetBSD__) && !defined(__OpenBSD__)
+#include <kern/task.h>
+#include <kern/thread.h>
+#include <mach/machine/vm_param.h>
+#endif
+
+#define RF_DECLARE_GLOBAL_THREADID
+#define rf_setup_threadid()
+#define rf_shutdown_threadid()
+#define rf_assign_threadid()
+
+
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+
+#define rf_get_threadid(_id_) _id_ = 0;
+
+#else
+#define rf_get_threadid(_id_) { \
+  thread_t thread = current_thread(); \
+  _id_ = (int)(((thread->thread_self)>>(8*sizeof(int *)))&0x0fffffff); \
+}
+#endif /* __NetBSD__ || __OpenBSD__ */
+#endif  /* KERNEL */
+
+#else  /* SIMULATE */
+
+/*
+ * Simulator
+ */
+
+#include "rf_diskevent.h"
+
+#define RF_DECLARE_GLOBAL_THREADID
+#define rf_setup_threadid()
+#define rf_shutdown_threadid()
+#define rf_assign_threadid()
+
+#define rf_get_threadid(_id_)  _id_ = rf_GetCurrentOwner()
+
+#endif  /* SIMULATE */
+#endif /* !_RF__RF_THREADID_H_ */