230 lines
7.1 KiB
C
230 lines
7.1 KiB
C
/* $FreeBSD$ */
|
|
/* $NetBSD: rf_threadstuff.h,v 1.10 2001/01/27 20:42:21 oster Exp $ */
|
|
/*
|
|
* Copyright (c) 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Mark Holland, Daniel Stodolsky, Jim Zelenka
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* threadstuff.h -- definitions for threads, locks, and synchronization
|
|
*
|
|
* The purpose of this file is provide some illusion of portability.
|
|
* If the functions below can be implemented with the same semantics on
|
|
* some new system, then at least the synchronization and thread control
|
|
* part of the code should not require modification to port to a new machine.
|
|
* the only other place where the pthread package is explicitly used is
|
|
* threadid.h
|
|
*
|
|
* this file should be included above stdio.h to get some necessary defines.
|
|
*
|
|
*/
|
|
|
|
#ifndef _RF__RF_THREADSTUFF_H_
|
|
#define _RF__RF_THREADSTUFF_H_
|
|
|
|
#include <dev/raidframe/rf_types.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#ifdef _KERNEL
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kthread.h>
|
|
#endif
|
|
|
|
#define rf_create_managed_mutex(a,b) _rf_create_managed_mutex(a,b,__FILE__,__LINE__)
|
|
#define rf_create_managed_cond(a,b) _rf_create_managed_cond(a,b,__FILE__,__LINE__)
|
|
#define rf_init_managed_threadgroup(a,b) _rf_init_managed_threadgroup(a,b,__FILE__,__LINE__)
|
|
#define rf_init_threadgroup(a) _rf_init_threadgroup(a,__FILE__,__LINE__)
|
|
#define rf_destroy_threadgroup(a) _rf_destroy_threadgroup(a,__FILE__,__LINE__)
|
|
|
|
int _rf_init_threadgroup(RF_ThreadGroup_t * g, char *file, int line);
|
|
int _rf_destroy_threadgroup(RF_ThreadGroup_t * g, char *file, int line);
|
|
int
|
|
_rf_init_managed_threadgroup(RF_ShutdownList_t ** listp,
|
|
RF_ThreadGroup_t * g, char *file, int line);
|
|
|
|
#include <sys/lock.h>
|
|
#if defined(__FreeBSD__ ) && __FreeBSD_version > 500005
|
|
#include <sys/mutex.h>
|
|
#define decl_simple_lock_data(a,b) a struct mtx b;
|
|
#define simple_lock_addr(a) ((struct mtx *)&(a))
|
|
|
|
typedef struct thread *RF_Thread_t;
|
|
typedef void *RF_ThreadArg_t;
|
|
|
|
#ifdef _KERNEL
|
|
static __inline struct ucred *
|
|
rf_getucred(RF_Thread_t td)
|
|
{
|
|
return (((struct thread *)td)->td_ucred);
|
|
}
|
|
#endif
|
|
|
|
#define RF_LOCK_MUTEX(_m_) mtx_lock(&(_m_))
|
|
#define RF_UNLOCK_MUTEX(_m_) mtx_unlock(&(_m_))
|
|
#else
|
|
#define decl_simple_lock_data(a,b) a struct simplelock b;
|
|
#define simple_lock_addr(a) ((struct simplelock *)&(a))
|
|
|
|
typedef struct proc *RF_Thread_t;
|
|
typedef void *RF_ThreadArg_t;
|
|
|
|
static __inline struct ucred *
|
|
rf_getucred(RF_Thread_t td)
|
|
{
|
|
return (((struct proc *)td)->p_ucred);
|
|
}
|
|
|
|
#define RF_LOCK_MUTEX(_m_) simple_lock(&(_m_))
|
|
#define RF_UNLOCK_MUTEX(_m_) simple_unlock(&(_m_))
|
|
#endif
|
|
|
|
#define RF_DECLARE_MUTEX(_m_) decl_simple_lock_data(,(_m_))
|
|
#define RF_DECLARE_STATIC_MUTEX(_m_) decl_simple_lock_data(static,(_m_))
|
|
#define RF_DECLARE_EXTERN_MUTEX(_m_) decl_simple_lock_data(extern,(_m_))
|
|
|
|
#define RF_DECLARE_COND(_c_) int _c_;
|
|
#define RF_DECLARE_STATIC_COND(_c_) static int _c_;
|
|
#define RF_DECLARE_EXTERN_COND(_c_) extern int _c_;
|
|
|
|
/*
|
|
* In NetBSD, kernel threads are simply processes which share several
|
|
* substructures and never run in userspace.
|
|
*/
|
|
#define RF_WAIT_COND(_c_,_m_) \
|
|
RF_LTSLEEP(&(_c_), PRIBIO, "rfwcond", 0, &(_m_))
|
|
#define RF_SIGNAL_COND(_c_) wakeup_one(&(_c_))
|
|
#define RF_BROADCAST_COND(_c_) wakeup(&(_c_))
|
|
#if defined(__NetBSD__)
|
|
#define RF_CREATE_THREAD(_handle_, _func_, _arg_, _name_) \
|
|
kthread_create1((void (*)(void *))(_func_), (void *)(_arg_), \
|
|
(struct proc **)&(_handle_), _name_)
|
|
#define RF_THREAD_EXIT(ret) \
|
|
kthread_exit(ret)
|
|
#elif defined(__FreeBSD__)
|
|
#if __FreeBSD_version > 500005
|
|
#define RF_CREATE_THREAD(_handle_, _func_, _arg_, _name_) \
|
|
kthread_create((void (*)(void *))(_func_), (void *)(_arg_), \
|
|
(struct proc **)&(_handle_), 0, 4, _name_)
|
|
#define RF_THREAD_EXIT(ret) \
|
|
kthread_exit(ret)
|
|
#else
|
|
#define RF_CREATE_THREAD(_handle_, _func_, _arg_, _name_) \
|
|
kthread_create((void (*)(void *))(_func_), (void *)(_arg_), \
|
|
(struct proc **)&(_handle_), _name_)
|
|
#define RF_THREAD_EXIT(ret) \
|
|
kthread_exit(ret);
|
|
#endif
|
|
#endif
|
|
|
|
struct RF_ThreadGroup_s {
|
|
int created;
|
|
int running;
|
|
int shutdown;
|
|
RF_DECLARE_MUTEX(mutex)
|
|
RF_DECLARE_COND(cond)
|
|
};
|
|
/*
|
|
* Someone has started a thread in the group
|
|
*/
|
|
#define RF_THREADGROUP_STARTED(_g_) { \
|
|
RF_LOCK_MUTEX((_g_)->mutex); \
|
|
(_g_)->created++; \
|
|
RF_UNLOCK_MUTEX((_g_)->mutex); \
|
|
}
|
|
|
|
/*
|
|
* Thread announcing that it is now running
|
|
*/
|
|
#define RF_THREADGROUP_RUNNING(_g_) { \
|
|
RF_LOCK_MUTEX((_g_)->mutex); \
|
|
(_g_)->running++; \
|
|
RF_UNLOCK_MUTEX((_g_)->mutex); \
|
|
RF_SIGNAL_COND((_g_)->cond); \
|
|
}
|
|
|
|
/*
|
|
* Thread announcing that it is now done
|
|
*/
|
|
#define RF_THREADGROUP_DONE(_g_) { \
|
|
RF_LOCK_MUTEX((_g_)->mutex); \
|
|
(_g_)->shutdown++; \
|
|
RF_UNLOCK_MUTEX((_g_)->mutex); \
|
|
RF_SIGNAL_COND((_g_)->cond); \
|
|
}
|
|
|
|
/*
|
|
* Wait for all threads to start running
|
|
*/
|
|
#define RF_THREADGROUP_WAIT_START(_g_) { \
|
|
RF_LOCK_MUTEX((_g_)->mutex); \
|
|
while((_g_)->running < (_g_)->created) { \
|
|
RF_WAIT_COND((_g_)->cond, (_g_)->mutex); \
|
|
} \
|
|
RF_UNLOCK_MUTEX((_g_)->mutex); \
|
|
}
|
|
|
|
/*
|
|
* Wait for all threads to stop running
|
|
*/
|
|
#ifndef __NetBSD__
|
|
#define RF_THREADGROUP_WAIT_STOP(_g_) { \
|
|
RF_LOCK_MUTEX((_g_)->mutex); \
|
|
RF_ASSERT((_g_)->running == (_g_)->created); \
|
|
while((_g_)->shutdown < (_g_)->running) { \
|
|
RF_WAIT_COND((_g_)->cond, (_g_)->mutex); \
|
|
} \
|
|
RF_UNLOCK_MUTEX((_g_)->mutex); \
|
|
}
|
|
#else
|
|
/* XXX Note that we've removed the assert. That should get put back in once
|
|
* we actually get something like a kernel thread running */
|
|
#define RF_THREADGROUP_WAIT_STOP(_g_) { \
|
|
RF_LOCK_MUTEX((_g_)->mutex); \
|
|
while((_g_)->shutdown < (_g_)->running) { \
|
|
RF_WAIT_COND((_g_)->cond, (_g_)->mutex); \
|
|
} \
|
|
RF_UNLOCK_MUTEX((_g_)->mutex); \
|
|
}
|
|
#endif
|
|
|
|
#if defined(__FreeBSD__) && __FreeBSD_version > 500005
|
|
int rf_mutex_init(struct mtx *, const char *);
|
|
int rf_mutex_destroy(struct mtx *);
|
|
int _rf_create_managed_mutex(RF_ShutdownList_t **, struct mtx *,
|
|
char *, int);
|
|
#else
|
|
int rf_mutex_init(struct simplelock *, const char *);
|
|
int rf_mutex_destroy(struct simplelock *);
|
|
int _rf_create_managed_mutex(RF_ShutdownList_t **, struct simplelock *,
|
|
char *, int);
|
|
#endif
|
|
int _rf_create_managed_cond(RF_ShutdownList_t ** listp, int *,
|
|
char *file, int line);
|
|
|
|
int rf_cond_init(int *c);
|
|
int rf_cond_destroy(int *c);
|
|
#endif /* !_RF__RF_THREADSTUFF_H_ */
|