/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Copyright (c) 2013, Joyent, Inc. All rights reserved. */ #ifndef _SYS_KLWP_H #define _SYS_KLWP_H #include <sys/types.h> #include <sys/condvar.h> #include <sys/thread.h> #include <sys/signal.h> #include <sys/siginfo.h> #include <sys/pcb.h> #include <sys/time.h> #include <sys/msacct.h> #include <sys/ucontext.h> #include <sys/lwp.h> #include <sys/contract.h> #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP) #include <sys/machparam.h> #endif #ifdef __cplusplus extern "C" { #endif /* * The light-weight process object and the methods by which it * is accessed. */ #define MAXSYSARGS 8 /* Maximum # of arguments passed to a syscall */ /* lwp_eosys values */ #define NORMALRETURN 0 /* normal return; adjusts PC, registers */ #define JUSTRETURN 1 /* just return, leave registers alone */ /* * Resource usage, per-lwp plus per-process (sum over defunct lwps). */ struct lrusage { u_longlong_t minflt; /* minor page faults */ u_longlong_t majflt; /* major page faults */ u_longlong_t nswap; /* swaps */ u_longlong_t inblock; /* input blocks */ u_longlong_t oublock; /* output blocks */ u_longlong_t msgsnd; /* messages sent */ u_longlong_t msgrcv; /* messages received */ u_longlong_t nsignals; /* signals received */ u_longlong_t nvcsw; /* voluntary context switches */ u_longlong_t nivcsw; /* involuntary context switches */ u_longlong_t sysc; /* system calls */ u_longlong_t ioch; /* chars read and written */ }; typedef struct _klwp *klwp_id_t; typedef struct _klwp { /* * user-mode context */ struct pcb lwp_pcb; /* user regs save pcb */ uintptr_t lwp_oldcontext; /* previous user context */ /* * system-call interface */ long *lwp_ap; /* pointer to arglist */ int lwp_errno; /* error for current syscall (private) */ /* * support for I/O */ char lwp_error; /* return error code */ char lwp_eosys; /* special action on end of syscall */ char lwp_argsaved; /* are all args in lwp_arg */ char lwp_watchtrap; /* lwp undergoing watchpoint single-step */ long lwp_arg[MAXSYSARGS]; /* args to current syscall */ void *lwp_regs; /* pointer to saved regs on stack */ void *lwp_fpu; /* pointer to fpu regs */ label_t lwp_qsav; /* longjmp label for quits and interrupts */ /* * signal handling and debugger (/proc) interface */ uchar_t lwp_cursig; /* current signal */ uchar_t lwp_curflt; /* current fault */ uchar_t lwp_sysabort; /* if set, abort syscall */ uchar_t lwp_asleep; /* lwp asleep in syscall */ uchar_t lwp_extsig; /* cursig sent from another contract */ stack_t lwp_sigaltstack; /* alternate signal stack */ struct sigqueue *lwp_curinfo; /* siginfo for current signal */ k_siginfo_t lwp_siginfo; /* siginfo for stop-on-fault */ k_sigset_t lwp_sigoldmask; /* for sigsuspend */ struct lwp_watch { /* used in watchpoint single-stepping */ caddr_t wpaddr; size_t wpsize; int wpcode; int wpmapped; greg_t wppc; } lwp_watch[4]; /* one for each of exec/write/read/read */ uint32_t lwp_oweupc; /* profil(2) ticks owed to this lwp */ /* * Microstate accounting. Timestamps are made at the start and the * end of each microstate (see <sys/msacct.h> for state definitions) * and the corresponding accounting info is updated. The current * microstate is kept in the thread struct, since there are cases * when one thread must update another thread's state (a no-no * for an lwp since it may be swapped/paged out). The rest of the * microstate stuff is kept here to avoid wasting space on things * like kernel threads that don't have an associated lwp. */ struct mstate { int ms_prev; /* previous running mstate */ hrtime_t ms_start; /* lwp creation time */ hrtime_t ms_term; /* lwp termination time */ hrtime_t ms_state_start; /* start time of this mstate */ hrtime_t ms_acct[NMSTATES]; /* per mstate accounting */ } lwp_mstate; /* * Per-lwp resource usage. */ struct lrusage lwp_ru; /* * Things to keep for real-time (SIGPROF) profiling. */ int lwp_lastfault; caddr_t lwp_lastfaddr; /* * timers. Protected by lwp->procp->p_lock */ struct itimerval lwp_timer[3]; /* * used to stop/alert lwps */ char lwp_unused; char lwp_state; /* Running in User/Kernel mode (no lock req) */ ushort_t lwp_nostop; /* Don't stop this lwp (no lock required) */ ushort_t lwp_pad; /* Reserved for future use */ /* * Last failed privilege. */ short lwp_badpriv; /* * linkage */ struct _kthread *lwp_thread; struct proc *lwp_procp; size_t lwp_childstksz; /* kernel stksize for this lwp's descendants */ uintptr_t lwp_ustack; /* current stack bounds */ size_t lwp_old_stk_ctl; /* old stack limit */ /* * Contracts */ struct ct_template *lwp_ct_active[CTT_MAXTYPE]; /* active templates */ struct contract *lwp_ct_latest[CTT_MAXTYPE]; /* last created contract */ void *lwp_brand; /* per-lwp brand data */ struct psinfo *lwp_spymaster; /* if an agent LWP, our spymaster */ } klwp_t; /* lwp states */ #define LWP_USER 0x01 /* Running in user mode */ #define LWP_SYS 0x02 /* Running in kernel mode */ #if defined(_KERNEL) extern int lwp_default_stksize; extern int lwp_reapcnt; extern struct _kthread *lwp_deathrow; extern kmutex_t reaplock; extern struct kmem_cache *lwp_cache; extern void *segkp_lwp; extern klwp_t lwp0; /* where newly-created lwps normally start */ extern void lwp_rtt(void); #endif /* _KERNEL */ #ifdef __cplusplus } #endif #endif /* _SYS_KLWP_H */
