077f6422293410659fa2b779c0ce1fdd725c45b2
[deliverable/binutils-gdb.git] / gdb / osf-share / cma_tcb_defs.h
1 /*
2 * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
3 * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
4 * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
5 * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
6 * To anyone who acknowledges that this file is provided "AS IS" without
7 * any express or implied warranty: permission to use, copy, modify, and
8 * distribute this file for any purpose is hereby granted without fee,
9 * provided that the above copyright notices and this notice appears in
10 * all source code copies, and that none of the names listed above be used
11 * in advertising or publicity pertaining to distribution of the software
12 * without specific, written prior permission. None of these organizations
13 * makes any representations about the suitability of this software for
14 * any purpose.
15 */
16 /*
17 * TCB-related type definitions.
18 */
19
20 #ifndef CMA_TCB_DEFS
21 #define CMA_TCB_DEFS
22
23 /*
24 * INCLUDE FILES
25 */
26 # if !_CMA_THREAD_SYNC_IO_
27 # include <cma_thread_io.h>
28 # endif
29 #include <cma.h>
30 #include <cma_debug_client.h>
31 #include <cma_attr.h>
32 #include <cma_defs.h>
33 #include <cma_handle.h>
34 #include <cma_queue.h>
35 #if _CMA_OS_ == _CMA__UNIX
36 # if defined(SNI_DCOSX)
37 # include <sys/ucontext.h>
38 # endif
39 # include <signal.h>
40 #endif
41 #include <cma_sched.h>
42
43 /*
44 * CONSTANTS AND MACROS
45 */
46
47 #if _CMA_PLATFORM_ == _CMA__IBMR2_UNIX
48 # define cma__c_ibmr2_ctx_stack_size 2048
49 # define cma__c_ibmr2_ctx_stack_top (cma__c_ibmr2_ctx_stack_size - 1)
50 #endif
51
52 /*
53 * TYPEDEFS
54 */
55
56 #ifndef __STDC__
57 # if _CMA_HARDWARE_ != _CMA__HPPA
58 struct CMA__T_SEMAPHORE;
59 # endif
60 struct CMA__T_INT_CV;
61 struct CMA__T_INT_MUTEX;
62 struct CMA__T_INT_TCB;
63 #endif
64
65 typedef cma_t_address *cma__t_context_list;
66
67 typedef struct CMA__T_TCB_PAD {
68 /*
69 * Adjust to align the tcb prolog at byte 32.
70 * 12 bytes are required as object header is currently
71 * 20 bytes long.
72 */
73 cma_t_integer pad1; /* pad bytes */
74 cma_t_integer pad2; /* pad bytes */
75 cma_t_integer pad3; /* pad bytes */
76 } cma__t_tcb_pad;
77
78 #if (_CMA_OS_ == _CMA__UNIX) && !_CMA_THREAD_SYNC_IO_
79 typedef struct CMA__T_TCB_SELECT {
80 cma__t_queue queue;
81 #if (_CMA_UNIX_TYPE != _CMA__SVR4)
82 cma__t_file_mask *rfds;
83 cma__t_file_mask *wfds;
84 cma__t_file_mask *efds;
85 #else
86 cma__t_poll_info poll_info;
87 #endif /* (_CMA_UNIX_TYPE != _CMA__SVR4) */
88 cma_t_integer nfound;
89 } cma__t_tcb_select;
90 #endif
91
92 typedef struct CMA__T_TCB_TIME {
93 cma__t_queue queue; /* must be first entry! */
94 cma_t_integer mode;
95 struct CMA__T_SEMAPHORE *semaphore; /* used for timed semaphores */
96 cma_t_date_time wakeup_time;
97 cma_t_integer quanta_remaining;
98 } cma__t_tcb_time;
99
100 typedef enum CMA__T_DEBEVT {
101 cma__c_debevt_activating = 1, /* First transition to running */
102 cma__c_debevt_running = 2, /* Any transition to running */
103 cma__c_debevt_preempting = 3, /* Preemted (replaced) another
104 thread */
105 cma__c_debevt_blocking = 4, /* Any transition to blocked */
106 cma__c_debevt_terminating = 5, /* Final state transition */
107 cma__c_debevt_term_alert = 6, /* Terminated due to alert/cancel */
108 cma__c_debevt_term_exc = 7, /* Terminated due to exception */
109 cma__c_debevt_exc_handled = 8 /* Exception is being handled */
110 } cma__t_debevt;
111
112 #define cma__c_debevt__first ((cma_t_integer)cma__c_debevt_activating)
113 #define cma__c_debevt__last ((cma_t_integer)cma__c_debevt_exc_handled)
114 #define cma__c_debevt__dim (cma__c_debevt__last + 1)
115
116 /*
117 * Type defining thread substate, which is used by the debugger.
118 * If the state is blocked, substate indicates WHY the thread is blocked.
119 */
120 typedef enum CMA__T_SUBSTATE {
121 cma__c_substa_normal = 0,
122 cma__c_substa_mutex = 1,
123 cma__c_substa_cv = 2,
124 cma__c_substa_timed_cv = 3,
125 cma__c_substa_term_alt = 4,
126 cma__c_substa_term_exc = 5,
127 cma__c_substa_delay =6,
128 cma__c_substa_not_yet_run = 7
129 } cma__t_substate;
130 #define cma__c_substa__first ((cma_t_integer)cma__c_substa_normal)
131 #define cma__c_substa__last ((cma_t_integer)cma__c_substa_not_yet_run)
132 #define cma__c_substa__dim (cma__c_substa__last + 1)
133
134
135 /*
136 * Per-thread state for the debugger
137 */
138 typedef struct CMA__T_TCB_DEBUG {
139 cma_t_boolean on_hold; /* Thread was put on hold by
140 debugger */
141 cma_t_boolean activated; /* Activation event was reported */
142 cma_t_boolean did_preempt; /* Thread preempted prior one */
143 cma_t_address start_pc; /* Start routine address */
144 cma_t_address object_addr; /* Addr of thread object */
145 cma__t_substate substate; /* Reason blocked, terminated, etc.*/
146 cma_t_boolean notify_debugger;/* Notify debugger thread is running */
147 cma_t_address SPARE2; /* SPARE */
148 cma_t_address SPARE3; /* SPARE */
149 struct CMA__T_INT_TCB
150 *preempted_tcb; /* TCB of thread that got preempted */
151 cma_t_boolean flags[cma__c_debevt__dim];
152 /* Events enabled for this thread */
153 } cma__t_tcb_debug;
154
155 typedef struct CMA__T_TCB_SCHED {
156 cma_t_integer adj_time; /* Abs. time in ticks of last
157 prio adj */
158 cma_t_integer tot_time; /* Weighted ave in ticks (scaled) */
159 cma_t_integer time_stamp; /* Abs. time in ticks of last update */
160 cma_t_integer cpu_time; /* Weighted average in ticks */
161 cma_t_integer cpu_ticks; /* # of ticks while comp. (scaled) */
162 cma_t_integer q_num; /* Number of last ready queue on */
163 cma_t_priority priority; /* Thread priority */
164 cma_t_sched_policy policy; /* Scheduling policy of thread */
165 cma_t_boolean rtb; /* "Run 'Till Block" scheduling */
166 cma_t_boolean spp; /* "Strict Priority
167 Preemption" sched */
168 cma_t_boolean fixed_prio; /* Fixed priority */
169 cma__t_sched_class class; /* Scheduling class */
170 struct CMA__T_VP *processor; /* Current processor (if running) */
171 } cma__t_tcb_sched;
172
173 typedef struct CMA__T_INT_ALERT {
174 cma_t_boolean pending : 1; /* alert_pending bit */
175 cma_t_boolean g_enable : 1; /* general delivery state */
176 cma_t_boolean a_enable : 1; /* asynchronous delivery state */
177 cma_t_integer spare : 29; /* Pad to longword */
178 cma_t_natural count; /* Alert scope nesting count */
179 } cma__t_int_alert;
180
181 typedef enum CMA__T_STATE {
182 cma__c_state_running = 0, /* For consistency with initial TCB */
183 cma__c_state_ready = 1,
184 cma__c_state_blocked = 2,
185 cma__c_state_terminated = 3
186 } cma__t_state;
187 #define cma__c_state__first ((cma_t_integer)cma__c_state_running)
188 #define cma__c_state__last ((cma_t_integer)cma__c_state_terminated)
189 #define cma__c_state__dim (cma__c_state__last + 1)
190
191 typedef enum CMA__T_THKIND {
192 cma__c_thkind_initial = 0, /* Initial thread */
193 cma__c_thkind_normal = 1, /* Normal thread */
194 cma__c_thkind_null = 2 /* A null thread */
195 } cma__t_thkind;
196 #define cma__c_thkind__first ((cma_t_integer)cma__c_thkind_initial)
197 #define cma__c_thkind__last ((cma_t_integer)cma__c_thkind_null)
198 #define cma__c_thkind__dim (cma__c_thkind__last + 1)
199
200 typedef enum CMA__T_SYSCALL_STATE {
201 cma__c_syscall_ok = 1, /* syscall was not interrupted */
202 cma__c_syscall_intintrpt = 1, /* syscall was interrupted by VTALRM */
203 cma__c_syscall_extintrpt = 2 /* syscall was interrupted by
204 external signal */
205 } cma__t_syscall_state;
206
207
208 typedef struct CMA__T_INT_TCB {
209 /*
210 * Fixed part of TCB.
211 * Modifications to the following three fields must be coordinated.
212 * The object header must always be first, and the prolog must always
213 * remain at the same offset (32) for all time. Thus the object header
214 * must never grow beyond a maximum of 32 bytes.
215 */
216 cma__t_object header; /* Common object header */
217 cma__t_tcb_pad pad1; /* Pad required to align prolog */
218 cma_t_tcb_prolog prolog; /* Standard prolog for tasks,
219 threads */
220
221 /*
222 * Floating part of TCB (fields here on are free to be moved and resized).
223 */
224 cma__t_queue threads; /* List of all known threads */
225 cma__t_int_attr *attributes; /* Backpointer to attr obj */
226 cma__t_state state; /* Current state of thread */
227 cma__t_thkind kind; /* Which kind of thread */
228 struct CMA__T_INT_MUTEX
229 *mutex; /* Mutex to control TCB access */
230 struct CMA__T_INT_CV
231 *term_cv; /* CV for join */
232 struct CMA__T_INT_MUTEX
233 *tswait_mutex; /* Mutex for
234 thread-synchronous waits */
235 struct CMA__T_INT_CV
236 *tswait_cv; /* CV for thread-synchronous waits */
237 cma_t_start_routine start_code; /* Address of start routine */
238 cma_t_address start_arg; /* Argument to pass to start_code */
239 cma__t_queue stack; /* Queue header for stack descr. */
240 cma_t_natural context_count; /* Size of context array */
241 cma__t_context_list contexts; /* Context value array pointer */
242 cma_t_exit_status exit_status; /* Exit status of thread */
243 cma_t_address return_value; /* Thread's return value */
244 cma__t_async_ctx async_ctx; /* Asynchronous context switch info */
245 cma__t_static_ctx static_ctx; /* Static context switch information */
246 cma_t_integer event_status; /* Status of semaphore operation */
247 cma__t_tcb_time timer; /* Time info for dispatcher */
248 cma__t_tcb_sched sched; /* Scheduler info */
249 cma__t_tcb_debug debug; /* Debugger info */
250 #if _CMA_OS_ == _CMA__UNIX
251 # if !_CMA_THREAD_SYNC_IO_
252 cma__t_tcb_select select; /* Select info for timed selects */
253 # endif
254 struct sigaction sigaction_data[NSIG];
255 #endif
256 cma_t_natural syscall_state; /* set if one of the cma
257 wrapped syscalls was
258 interrupted. */
259 cma_t_boolean detached; /* Set if already detached */
260 cma_t_boolean terminated; /* Set if terminated */
261 cma_t_integer joiners; /* Count of joiners, for
262 zombie frees */
263 cma__t_int_alert alert; /* Current alert state info */
264 struct CMA__T_INT_CV
265 *wait_cv; /* CV thread is currently waiting on */
266 struct CMA__T_INT_MUTEX
267 *wait_mutex; /* Mutex thread is waiting on */
268 struct EXC_CONTEXT_T
269 *exc_stack; /* Top of exception stack */
270 #if _CMA_PLATFORM_ == _CMA__IBMR2_UNIX
271 char ctx_stack[cma__c_ibmr2_ctx_stack_size];
272 #endif
273 cma_t_integer thd_errno; /* Per-thread errno value */
274 #if _CMA_OS_ == _CMA__VMS
275 cma_t_integer thd_vmserrno; /* Per-thread VMS errno value */
276 #endif
277 } cma__t_int_tcb;
278
279 #endif
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