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--- old/usr/src/uts/common/sys/klwp.h
+++ new/usr/src/uts/common/sys/klwp.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 23 * Use is subject to license terms.
24 24 */
25 25
26 26 /*
27 27 * Copyright 2016 Joyent, Inc.
28 28 */
29 29
30 30 #ifndef _SYS_KLWP_H
31 31 #define _SYS_KLWP_H
32 32
33 33 #include <sys/types.h>
34 34 #include <sys/condvar.h>
35 35 #include <sys/thread.h>
36 36 #include <sys/signal.h>
37 37 #include <sys/siginfo.h>
38 38 #include <sys/pcb.h>
39 39 #include <sys/time.h>
40 40 #include <sys/msacct.h>
41 41 #include <sys/ucontext.h>
42 42 #include <sys/lwp.h>
43 43 #include <sys/contract.h>
44 44
45 45 #if (defined(_KERNEL) || defined(_KMEMUSER)) && defined(_MACHDEP)
46 46 #include <sys/machparam.h>
47 47 #endif
48 48
49 49 #ifdef __cplusplus
50 50 extern "C" {
51 51 #endif
52 52
53 53 /*
54 54 * The light-weight process object and the methods by which it
55 55 * is accessed.
56 56 */
57 57
58 58 #define MAXSYSARGS 8 /* Maximum # of arguments passed to a syscall */
59 59
60 60 /* lwp_eosys values */
61 61 #define NORMALRETURN 0 /* normal return; adjusts PC, registers */
62 62 #define JUSTRETURN 1 /* just return, leave registers alone */
63 63
64 64 /*
65 65 * Resource usage, per-lwp plus per-process (sum over defunct lwps).
66 66 */
67 67 struct lrusage {
68 68 u_longlong_t minflt; /* minor page faults */
69 69 u_longlong_t majflt; /* major page faults */
70 70 u_longlong_t nswap; /* swaps */
71 71 u_longlong_t inblock; /* input blocks */
72 72 u_longlong_t oublock; /* output blocks */
73 73 u_longlong_t msgsnd; /* messages sent */
74 74 u_longlong_t msgrcv; /* messages received */
75 75 u_longlong_t nsignals; /* signals received */
76 76 u_longlong_t nvcsw; /* voluntary context switches */
77 77 u_longlong_t nivcsw; /* involuntary context switches */
78 78 u_longlong_t sysc; /* system calls */
79 79 u_longlong_t ioch; /* chars read and written */
80 80 };
81 81
82 82 typedef struct _klwp *klwp_id_t;
83 83
84 84 typedef struct _klwp {
85 85 /*
86 86 * user-mode context
87 87 */
88 88 struct pcb lwp_pcb; /* user regs save pcb */
89 89 uintptr_t lwp_oldcontext; /* previous user context */
90 90
91 91 /*
92 92 * system-call interface
93 93 */
94 94 long *lwp_ap; /* pointer to arglist */
95 95 int lwp_errno; /* error for current syscall (private) */
96 96 /*
97 97 * support for I/O
98 98 */
99 99 char lwp_error; /* return error code */
100 100 char lwp_eosys; /* special action on end of syscall */
101 101 char lwp_argsaved; /* are all args in lwp_arg */
102 102 char lwp_watchtrap; /* lwp undergoing watchpoint single-step */
103 103 long lwp_arg[MAXSYSARGS]; /* args to current syscall */
104 104 void *lwp_regs; /* pointer to saved regs on stack */
105 105 void *lwp_fpu; /* pointer to fpu regs */
106 106 label_t lwp_qsav; /* longjmp label for quits and interrupts */
107 107
108 108 /*
109 109 * signal handling and debugger (/proc) interface
110 110 */
111 111 uchar_t lwp_cursig; /* current signal */
112 112 uchar_t lwp_curflt; /* current fault */
113 113 uchar_t lwp_sysabort; /* if set, abort syscall */
114 114 uchar_t lwp_asleep; /* lwp asleep in syscall */
115 115 uchar_t lwp_extsig; /* cursig sent from another contract */
116 116 stack_t lwp_sigaltstack; /* alternate signal stack */
117 117 struct sigqueue *lwp_curinfo; /* siginfo for current signal */
118 118 k_siginfo_t lwp_siginfo; /* siginfo for stop-on-fault */
119 119 k_sigset_t lwp_sigoldmask; /* for sigsuspend */
120 120 struct lwp_watch { /* used in watchpoint single-stepping */
121 121 caddr_t wpaddr;
122 122 size_t wpsize;
123 123 int wpcode;
124 124 int wpmapped;
125 125 greg_t wppc;
126 126 } lwp_watch[4]; /* one for each of exec/write/read/read */
127 127
128 128 uint32_t lwp_oweupc; /* profil(2) ticks owed to this lwp */
129 129
130 130 /*
131 131 * Microstate accounting. Timestamps are made at the start and the
132 132 * end of each microstate (see <sys/msacct.h> for state definitions)
133 133 * and the corresponding accounting info is updated. The current
134 134 * microstate is kept in the thread struct, since there are cases
135 135 * when one thread must update another thread's state (a no-no
136 136 * for an lwp since it may be swapped/paged out). The rest of the
137 137 * microstate stuff is kept here to avoid wasting space on things
138 138 * like kernel threads that don't have an associated lwp.
139 139 */
140 140 struct mstate {
141 141 int ms_prev; /* previous running mstate */
142 142 hrtime_t ms_start; /* lwp creation time */
143 143 hrtime_t ms_term; /* lwp termination time */
144 144 hrtime_t ms_state_start; /* start time of this mstate */
145 145 hrtime_t ms_acct[NMSTATES]; /* per mstate accounting */
146 146 } lwp_mstate;
147 147
148 148 /*
149 149 * Per-lwp resource usage.
150 150 */
151 151 struct lrusage lwp_ru;
152 152
153 153 /*
154 154 * Things to keep for real-time (SIGPROF) profiling.
155 155 */
156 156 int lwp_lastfault;
157 157 caddr_t lwp_lastfaddr;
158 158
159 159 /*
160 160 * timers. Protected by lwp->procp->p_lock
161 161 */
162 162 struct itimerval lwp_timer[3];
163 163
164 164 /*
165 165 * used to stop/alert lwps
166 166 */
167 167 char lwp_unused;
168 168 char lwp_state; /* Running in User/Kernel mode (no lock req) */
169 169 ushort_t lwp_nostop; /* Don't stop this lwp (no lock required) */
170 170 ushort_t lwp_pad; /* Reserved for future use */
171 171
172 172 /*
173 173 * Last failed privilege.
174 174 */
175 175 short lwp_badpriv;
176 176
177 177 /*
178 178 * linkage
179 179 */
180 180 struct _kthread *lwp_thread;
181 181 struct proc *lwp_procp;
182 182
183 183 size_t lwp_childstksz; /* kernel stksize for this lwp's descendants */
184 184
185 185 uintptr_t lwp_ustack; /* current stack bounds */
186 186 size_t lwp_old_stk_ctl; /* old stack limit */
187 187
188 188 /*
189 189 * Contracts
190 190 */
191 191 struct ct_template *lwp_ct_active[CTT_MAXTYPE]; /* active templates */
192 192 struct contract *lwp_ct_latest[CTT_MAXTYPE]; /* last created contract */
193 193
194 194 /*
195 195 * Branding:
196 196 * lwp_brand - per-lwp brand data
197 197 * lwp_brand_syscall - brand syscall interposer
198 198 */
199 199 void *lwp_brand;
200 200 int (*lwp_brand_syscall)(void);
201 201
202 202 struct psinfo *lwp_spymaster; /* if an agent LWP, our spymaster */
203 203 } klwp_t;
204 204
205 205 /* lwp states */
206 206 #define LWP_USER 0x01 /* Running in user mode */
207 207 #define LWP_SYS 0x02 /* Running in kernel mode */
208 208
209 209 #if defined(_KERNEL)
210 210 extern int lwp_default_stksize;
211 211 extern int lwp_reapcnt;
212 212
213 213 extern struct _kthread *lwp_deathrow;
214 214 extern kmutex_t reaplock;
215 215 extern struct kmem_cache *lwp_cache;
216 216 extern void *segkp_lwp;
217 217 extern klwp_t lwp0;
218 218
219 219 /* where newly-created lwps normally start */
220 220 extern void lwp_rtt(void);
221 221
222 222 #endif /* _KERNEL */
223 223
224 224 #ifdef __cplusplus
225 225 }
226 226 #endif
227 227
228 228 #endif /* _SYS_KLWP_H */
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