mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/*-
|
|
* Copyright (C) 2001 Julian Elischer <julian@freebsd.org>
|
|
* for the FreeBSD Foundation.
|
|
*
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice(s), this list of conditions and the following disclaimer as
|
|
* the first lines of this file unmodified other than the possible
|
|
* addition of one or more copyright notices.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice(s), this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
|
|
* DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _SYS_KSE_H_
|
|
#define _SYS_KSE_H_
|
|
|
|
#include <sys/ucontext.h>
|
|
#include <sys/time.h>
|
|
#include <sys/signal.h>
|
|
|
|
/*
|
|
* This file defines the structures needed for communication between
|
|
* the userland and the kernel when running a KSE-based threading system.
|
|
* The only programs that should see this file are the user thread
|
|
* scheduler (UTS) and the kernel.
|
|
*/
|
|
struct kse_mailbox;
|
|
|
|
typedef void kse_func_t(struct kse_mailbox *);
|
|
|
|
/*
|
|
* Thread mailbox.
|
|
*
|
|
* This describes a user thread to the kernel scheduler.
|
|
*/
|
|
struct kse_thr_mailbox {
|
|
ucontext_t tm_context; /* User and machine context */
|
|
uint32_t tm_flags; /* Thread flags */
|
|
struct kse_thr_mailbox *tm_next; /* Next thread in list */
|
|
void *tm_udata; /* For use by the UTS */
|
|
uint32_t tm_uticks; /* Time in userland */
|
|
uint32_t tm_sticks; /* Time in kernel */
|
|
siginfo_t tm_syncsig;
|
|
uint32_t tm_dflags; /* Debug flags */
|
|
lwpid_t tm_lwp; /* kernel thread UTS runs on */
|
|
uint32_t __spare__[6];
|
|
};
|
|
|
|
/*
|
|
* KSE mailbox.
|
|
*
|
|
* Communication path between the UTS and the kernel scheduler specific to
|
|
* a single KSE.
|
|
*/
|
|
struct kse_mailbox {
|
|
uint32_t km_version; /* Mailbox version */
|
|
struct kse_thr_mailbox *km_curthread; /* Currently running thread */
|
|
struct kse_thr_mailbox *km_completed; /* Threads back from kernel */
|
|
sigset_t km_sigscaught; /* Caught signals */
|
|
uint32_t km_flags; /* Mailbox flags */
|
|
kse_func_t *km_func; /* UTS function */
|
|
stack_t km_stack; /* UTS stack */
|
|
void *km_udata; /* For use by the UTS */
|
|
struct timespec km_timeofday; /* Time of day */
|
|
uint32_t km_quantum; /* Upcall quantum in msecs */
|
|
lwpid_t km_lwp; /* kernel thread UTS runs on */
|
|
uint32_t __spare2__[7];
|
|
};
|
|
|
|
#define KSE_VER_0 0
|
|
#define KSE_VERSION KSE_VER_0
|
|
|
|
/* These flags are kept in km_flags */
|
|
#define KMF_NOUPCALL 0x01
|
|
#define KMF_NOCOMPLETED 0x02
|
|
#define KMF_DONE 0x04
|
|
#define KMF_BOUND 0x08
|
|
#define KMF_WAITSIGEVENT 0x10
|
|
|
|
/* These flags are kept in tm_flags */
|
|
#define TMF_NOUPCALL 0x01
|
|
|
|
/* These flags are kept in tm_dlfags */
|
|
#define TMDF_SSTEP 0x01
|
|
#define TMDF_SUSPEND 0x02
|
|
|
|
/* Flags for kse_switchin */
|
|
#define KSE_SWITCHIN_SETTMBX 0x01
|
|
|
|
/* Commands for kse_thr_interrupt */
|
|
#define KSE_INTR_INTERRUPT 1
|
|
#define KSE_INTR_RESTART 2
|
|
#define KSE_INTR_SENDSIG 3
|
|
#define KSE_INTR_SIGEXIT 4
|
|
#define KSE_INTR_DBSUSPEND 5
|
|
#define KSE_INTR_EXECVE 6
|
|
|
|
struct kse_execve_args {
|
|
sigset_t sigmask;
|
|
sigset_t sigpend;
|
|
char *path;
|
|
char **argv;
|
|
char **envp;
|
|
void *reserved;
|
|
};
|
|
|
|
#ifndef _KERNEL
|
|
int kse_create(struct kse_mailbox *, int);
|
|
int kse_exit(void);
|
|
int kse_release(struct timespec *);
|
|
int kse_thr_interrupt(struct kse_thr_mailbox *, int, long);
|
|
int kse_wakeup(struct kse_mailbox *);
|
|
int kse_switchin(struct kse_thr_mailbox *, int flags);
|
|
#endif /* !_KERNEL */
|
|
|
|
#endif /* !_SYS_KSE_H_ */
|