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[/] [or1k/] [trunk/] [insight/] [gdb/] [gdb_thread_db.h] - Blame information for rev 1765

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1 578 markom
#ifdef HAVE_THREAD_DB_H
2
#include <thread_db.h>
3
#else
4
 
5
#ifdef HAVE_STDINT_H
6
#include <stdint.h>
7
typedef uint32_t gdb_uint32_t;
8
#define GDB_UINT32_C(c) UINT32_C(c)
9
#else
10
typedef unsigned int gdb_uint32_t;
11
#define GDB_UINT32_C(c) c ## U
12
#endif
13
 
14
/* Copyright 1999, 2000 Free Software Foundation, Inc.
15
   This file is part of the GNU C Library.
16
 
17
   The GNU C Library is free software; you can redistribute it and/or
18
   modify it under the terms of the GNU Library General Public License as
19
   published by the Free Software Foundation; either version 2 of the
20
   License, or (at your option) any later version.
21
 
22
   The GNU C Library is distributed in the hope that it will be useful,
23
   but WITHOUT ANY WARRANTY; without even the implied warranty of
24
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
25
   Library General Public License for more details.
26
 
27
   You should have received a copy of the GNU Library General Public
28
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
29
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
30
   Boston, MA 02111-1307, USA.  */
31
 
32
#ifndef _THREAD_DB_H
33
#define _THREAD_DB_H    1
34
 
35
/* This is the debugger interface for the LinuxThreads library.  It is
36
   modelled closely after the interface with same names in Solaris with
37
   the goal to share the same code in the debugger.  */
38
#include <pthread.h>
39
#include <sys/types.h>
40
#include <sys/procfs.h>
41
 
42
 
43
/* Error codes of the library.  */
44
typedef enum
45
{
46
  TD_OK,          /* No error.  */
47
  TD_ERR,         /* No further specified error.  */
48
  TD_NOTHR,       /* No matching thread found.  */
49
  TD_NOSV,        /* No matching synchronization handle found.  */
50
  TD_NOLWP,       /* No matching light-weighted process found.  */
51
  TD_BADPH,       /* Invalid process handle.  */
52
  TD_BADTH,       /* Invalid thread handle.  */
53
  TD_BADSH,       /* Invalid synchronization handle.  */
54
  TD_BADTA,       /* Invalid thread agent.  */
55
  TD_BADKEY,      /* Invalid key.  */
56
  TD_NOMSG,       /* No event available.  */
57
  TD_NOFPREGS,    /* No floating-point register content available.  */
58
  TD_NOLIBTHREAD, /* Application not linked with thread library.  */
59
  TD_NOEVENT,     /* Requested event is not supported.  */
60
  TD_NOCAPAB,     /* Capability not available.  */
61
  TD_DBERR,       /* Internal debug library error.  */
62
  TD_NOAPLIC,     /* Operation is not applicable.  */
63
  TD_NOTSD,       /* No thread-specific data available.  */
64
  TD_MALLOC,      /* Out of memory.  */
65
  TD_PARTIALREG,  /* Not entire register set was read or written.  */
66
  TD_NOXREGS      /* X register set not available for given thread.  */
67
} td_err_e;
68
 
69
 
70
/* Possible thread states.  TD_THR_ANY_STATE is a pseudo-state used to
71
   select threads regardless of state in td_ta_thr_iter().  */
72
typedef enum
73
{
74
  TD_THR_ANY_STATE,
75
  TD_THR_UNKNOWN,
76
  TD_THR_STOPPED,
77
  TD_THR_RUN,
78
  TD_THR_ACTIVE,
79
  TD_THR_ZOMBIE,
80
  TD_THR_SLEEP,
81
  TD_THR_STOPPED_ASLEEP
82
} td_thr_state_e;
83
 
84
/* Thread type: user or system.  TD_THR_ANY_TYPE is a pseudo-type used
85
   to select threads regardless of type in td_ta_thr_iter().  */
86
typedef enum
87
{
88
  TD_THR_ANY_TYPE,
89
  TD_THR_USER,
90
  TD_THR_SYSTEM
91
} td_thr_type_e;
92
 
93
 
94
/* Types of the debugging library.  */
95
 
96
/* Handle for a process.  This type is opaque.  */
97
typedef struct td_thragent td_thragent_t;
98
 
99
/* The actual thread handle type.  This is also opaque.  */
100
typedef struct td_thrhandle
101
{
102
  td_thragent_t *th_ta_p;
103
  psaddr_t th_unique;
104
} td_thrhandle_t;
105
 
106
 
107
/* Flags for `td_ta_thr_iter'.  */
108
#define TD_THR_ANY_USER_FLAGS   0xffffffff
109
#define TD_THR_LOWEST_PRIORITY  -20
110
#define TD_SIGNO_MASK           NULL
111
 
112
 
113
#define TD_EVENTSIZE    2
114
#define BT_UISHIFT      5 /* log base 2 of BT_NBIPUI, to extract word index */
115
#define BT_NBIPUI       (1 << BT_UISHIFT)       /* n bits per uint */
116
#define BT_UIMASK       (BT_NBIPUI - 1)         /* to extract bit index */
117
 
118
/* Bitmask of enabled events. */
119
typedef struct td_thr_events
120
{
121
  gdb_uint32_t event_bits[TD_EVENTSIZE];
122
} td_thr_events_t;
123
 
124
/* Event set manipulation macros. */
125
#define __td_eventmask(n) \
126
  (GDB_UINT32_C (1) << (((n) - 1) & BT_UIMASK))
127
#define __td_eventword(n) \
128
  ((GDB_UINT32_C ((n) - 1)) >> BT_UISHIFT)
129
 
130
#define td_event_emptyset(setp) \
131
  do {                                                                        \
132
    int __i;                                                                  \
133
    for (__i = TD_EVENTSIZE; __i > 0; --__i)                                   \
134
      (setp)->event_bits[__i - 1] = 0;                                         \
135
  } while (0)
136
 
137
#define td_event_fillset(setp) \
138
  do {                                                                        \
139
    int __i;                                                                  \
140
    for (__i = TD_EVENTSIZE; __i > 0; --__i)                                   \
141
      (setp)->event_bits[__i - 1] = GDB_UINT32_C (0xffffffff);                \
142
  } while (0)
143
 
144
#define td_event_addset(setp, n) \
145
  (((setp)->event_bits[__td_eventword (n)]) |= __td_eventmask (n))
146
#define td_event_delset(setp, n) \
147
  (((setp)->event_bits[__td_eventword (n)]) &= ~__td_eventmask (n))
148
#define td_eventismember(setp, n) \
149
  (__td_eventmask (n) & ((setp)->event_bits[__td_eventword (n)]))
150
#if TD_EVENTSIZE == 2
151
# define td_eventisempty(setp) \
152
  (!((setp)->event_bits[0]) && !((setp)->event_bits[1]))
153
#else
154
# error "td_eventisempty must be changed to match TD_EVENTSIZE"
155
#endif
156
 
157
/* Events reportable by the thread implementation.  */
158
typedef enum
159
{
160
  TD_ALL_EVENTS,                 /* Pseudo-event number.  */
161
  TD_EVENT_NONE = TD_ALL_EVENTS, /* Depends on context.  */
162
  TD_READY,                      /* Is executable now. */
163
  TD_SLEEP,                      /* Blocked in a synchronization obj.  */
164
  TD_SWITCHTO,                   /* Now assigned to a process.  */
165
  TD_SWITCHFROM,                 /* Not anymore assigned to a process.  */
166
  TD_LOCK_TRY,                   /* Trying to get an unavailable lock.  */
167
  TD_CATCHSIG,                   /* Signal posted to the thread.  */
168
  TD_IDLE,                       /* Process getting idle.  */
169
  TD_CREATE,                     /* New thread created.  */
170
  TD_DEATH,                      /* Thread terminated.  */
171
  TD_PREEMPT,                    /* Preempted.  */
172
  TD_PRI_INHERIT,                /* Inherited elevated priority.  */
173
  TD_REAP,                       /* Reaped.  */
174
  TD_CONCURRENCY,                /* Number of processes changing.  */
175
  TD_TIMEOUT,                    /* Conditional variable wait timed out.  */
176
  TD_MIN_EVENT_NUM = TD_READY,
177
  TD_MAX_EVENT_NUM = TD_TIMEOUT,
178
  TD_EVENTS_ENABLE = 31         /* Event reporting enabled.  */
179
} td_event_e;
180
 
181
/* Values representing the different ways events are reported.  */
182
typedef enum
183
{
184
  NOTIFY_BPT,                   /* User must insert breakpoint at u.bptaddr. */
185
  NOTIFY_AUTOBPT,               /* Breakpoint at u.bptaddr is automatically
186
                                   inserted.  */
187
  NOTIFY_SYSCALL                /* System call u.syscallno will be invoked.  */
188
} td_notify_e;
189
 
190
/* Description how event type is reported.  */
191
typedef struct td_notify
192
{
193
  td_notify_e type;             /* Way the event is reported.  */
194
  union
195
  {
196
    psaddr_t bptaddr;           /* Address of breakpoint.  */
197
    int syscallno;              /* Number of system call used.  */
198
  } u;
199
} td_notify_t;
200
 
201
/* Structure used to report event.  */
202
typedef struct td_event_msg
203
{
204
  td_event_e event;             /* Event type being reported.  */
205
  const td_thrhandle_t *th_p;   /* Thread reporting the event.  */
206
  union
207
  {
208
#if 0
209
    td_synchandle_t *sh;        /* Handle of synchronization object.  */
210
#endif
211
    uintptr_t data;             /* Event specific data.  */
212
  } msg;
213
} td_event_msg_t;
214
 
215
/* Structure containing event data available in each thread structure.  */
216
typedef struct
217
{
218
  td_thr_events_t eventmask;    /* Mask of enabled events.  */
219
  td_event_e eventnum;          /* Number of last event.  */
220
  void *eventdata;              /* Data associated with event.  */
221
} td_eventbuf_t;
222
 
223
 
224
/* Gathered statistics about the process.  */
225
typedef struct td_ta_stats
226
{
227
  int nthreads;                 /* Total number of threads in use.  */
228
  int r_concurrency;            /* Concurrency level requested by user.  */
229
  int nrunnable_num;            /* Average runnable threads, numerator.  */
230
  int nrunnable_den;            /* Average runnable threads, denominator.  */
231
  int a_concurrency_num;        /* Achieved concurrency level, numerator.  */
232
  int a_concurrency_den;        /* Achieved concurrency level, denominator.  */
233
  int nlwps_num;                /* Average number of processes in use,
234
                                   numerator.  */
235
  int nlwps_den;                /* Average number of processes in use,
236
                                   denominator.  */
237
  int nidle_num;                /* Average number of idling processes,
238
                                   numerator.  */
239
  int nidle_den;                /* Average number of idling processes,
240
                                   denominator.  */
241
} td_ta_stats_t;
242
 
243
 
244
/* Since Sun's library is based on Solaris threads we have to define a few
245
   types to map them to POSIX threads.  */
246
typedef pthread_t thread_t;
247
typedef pthread_key_t thread_key_t;
248
 
249
 
250
/* Callback for iteration over threads.  */
251
typedef int td_thr_iter_f (const td_thrhandle_t *, void *);
252
 
253
/* Callback for iteration over thread local data.  */
254
typedef int td_key_iter_f (thread_key_t, void (*) (void *), void *);
255
 
256
 
257
 
258
/* Forward declaration.  This has to be defined by the user.  */
259
struct ps_prochandle;
260
 
261
 
262
/* Information about the thread.  */
263
typedef struct td_thrinfo
264
{
265
  td_thragent_t *ti_ta_p;               /* Process handle.  */
266
  unsigned int ti_user_flags;           /* Unused.  */
267
  thread_t ti_tid;                      /* Thread ID returned by
268
                                           pthread_create().  */
269
  char *ti_tls;                         /* Pointer to thread-local data.  */
270
  psaddr_t ti_startfunc;                /* Start function passed to
271
                                           pthread_create().  */
272
  psaddr_t ti_stkbase;                  /* Base of thread's stack.  */
273
  long int ti_stksize;                  /* Size of thread's stack.  */
274
  psaddr_t ti_ro_area;                  /* Unused.  */
275
  int ti_ro_size;                       /* Unused.  */
276
  td_thr_state_e ti_state;              /* Thread state.  */
277
  unsigned char ti_db_suspended;        /* Nonzero if suspended by debugger. */
278
  td_thr_type_e ti_type;                /* Type of the thread (system vs
279
                                           user thread).  */
280
  intptr_t ti_pc;                       /* Unused.  */
281
  intptr_t ti_sp;                       /* Unused.  */
282
  short int ti_flags;                   /* Unused.  */
283
  int ti_pri;                           /* Thread priority.  */
284
  lwpid_t ti_lid;                       /* Unused.  */
285
  sigset_t ti_sigmask;                  /* Signal mask.  */
286
  unsigned char ti_traceme;             /* Nonzero if event reporting
287
                                           enabled.  */
288
  unsigned char ti_preemptflag;         /* Unused.  */
289
  unsigned char ti_pirecflag;           /* Unused.  */
290
  sigset_t ti_pending;                  /* Set of pending signals.  */
291
  td_thr_events_t ti_events;            /* Set of enabled events.  */
292
} td_thrinfo_t;
293
 
294
 
295
 
296
/* Prototypes for exported library functions.  */
297
 
298
/* Initialize the thread debug support library.  */
299
extern td_err_e td_init (void);
300
 
301
/* Historical relict.  Should not be used anymore.  */
302
extern td_err_e td_log (void);
303
 
304
/* Generate new thread debug library handle for process PS.  */
305
extern td_err_e td_ta_new (struct ps_prochandle *__ps, td_thragent_t **__ta);
306
 
307
/* Free resources allocated for TA.  */
308
extern td_err_e td_ta_delete (td_thragent_t *__ta);
309
 
310
/* Get number of currently running threads in process associated with TA.  */
311
extern td_err_e td_ta_get_nthreads (const td_thragent_t *__ta, int *__np);
312
 
313
/* Return process handle passed in `td_ta_new' for process associated with
314
   TA.  */
315
extern td_err_e td_ta_get_ph (const td_thragent_t *__ta,
316
                              struct ps_prochandle **__ph);
317
 
318
/* Map thread library handle PT to thread debug library handle for process
319
   associated with TA and store result in *TH.  */
320
extern td_err_e td_ta_map_id2thr (const td_thragent_t *__ta, pthread_t __pt,
321
                                  td_thrhandle_t *__th);
322
 
323
/* Map process ID LWPID to thread debug library handle for process
324
   associated with TA and store result in *TH.  */
325
extern td_err_e td_ta_map_lwp2thr (const td_thragent_t *__ta, lwpid_t __lwpid,
326
                                   td_thrhandle_t *__th);
327
 
328
 
329
/* Call for each thread in a process associated with TA the callback function
330
   CALLBACK.  */
331
extern td_err_e td_ta_thr_iter (const td_thragent_t *__ta,
332
                                td_thr_iter_f *__callback, void *__cbdata_p,
333
                                td_thr_state_e __state, int __ti_pri,
334
                                sigset_t *__ti_sigmask_p,
335
                                unsigned int __ti_user_flags);
336
 
337
/* Call for each defined thread local data entry the callback function KI.  */
338
extern td_err_e td_ta_tsd_iter (const td_thragent_t *__ta, td_key_iter_f *__ki,
339
                                void *__p);
340
 
341
 
342
/* Get event address for EVENT.  */
343
extern td_err_e td_ta_event_addr (const td_thragent_t *__ta,
344
                                  td_event_e __event, td_notify_t *__ptr);
345
 
346
/* Enable EVENT in global mask.  */
347
extern td_err_e td_ta_set_event (const td_thragent_t *__ta,
348
                                 td_thr_events_t *__event);
349
 
350
/* Disable EVENT in global mask.  */
351
extern td_err_e td_ta_clear_event (const td_thragent_t *__ta,
352
                                   td_thr_events_t *__event);
353
 
354
/* Return information about last event.  */
355
extern td_err_e td_ta_event_getmsg (const td_thragent_t *__ta,
356
                                    td_event_msg_t *msg);
357
 
358
 
359
/* Set suggested concurrency level for process associated with TA.  */
360
extern td_err_e td_ta_setconcurrency (const td_thragent_t *__ta, int __level);
361
 
362
 
363
/* Enable collecting statistics for process associated with TA.  */
364
extern td_err_e td_ta_enable_stats (const td_thragent_t *__ta, int __enable);
365
 
366
/* Reset statistics.  */
367
extern td_err_e td_ta_reset_stats (const td_thragent_t *__ta);
368
 
369
/* Retrieve statistics from process associated with TA.  */
370
extern td_err_e td_ta_get_stats (const td_thragent_t *__ta,
371
                                 td_ta_stats_t *__statsp);
372
 
373
 
374
/* Validate that TH is a thread handle.  */
375
extern td_err_e td_thr_validate (const td_thrhandle_t *__th);
376
 
377
/* Return information about thread TH.  */
378
extern td_err_e td_thr_get_info (const td_thrhandle_t *__th,
379
                                 td_thrinfo_t *__infop);
380
 
381
/* Retrieve floating-point register contents of process running thread TH.  */
382
extern td_err_e td_thr_getfpregs (const td_thrhandle_t *__th,
383
                                  prfpregset_t *__regset);
384
 
385
/* Retrieve general register contents of process running thread TH.  */
386
extern td_err_e td_thr_getgregs (const td_thrhandle_t *__th,
387
                                 prgregset_t __gregs);
388
 
389
/* Retrieve extended register contents of process running thread TH.  */
390
extern td_err_e td_thr_getxregs (const td_thrhandle_t *__th, void *__xregs);
391
 
392
/* Get size of extended register set of process running thread TH.  */
393
extern td_err_e td_thr_getxregsize (const td_thrhandle_t *__th, int *__sizep);
394
 
395
/* Set floating-point register contents of process running thread TH.  */
396
extern td_err_e td_thr_setfpregs (const td_thrhandle_t *__th,
397
                                  const prfpregset_t *__fpregs);
398
 
399
/* Set general register contents of process running thread TH.  */
400
extern td_err_e td_thr_setgregs (const td_thrhandle_t *__th,
401
                                 prgregset_t __gregs);
402
 
403
/* Set extended register contents of process running thread TH.  */
404
extern td_err_e td_thr_setxregs (const td_thrhandle_t *__th,
405
                                 const void *__addr);
406
 
407
 
408
/* Enable reporting for EVENT for thread TH.  */
409
extern td_err_e td_thr_event_enable (const td_thrhandle_t *__th, int __event);
410
 
411
/* Enable EVENT for thread TH.  */
412
extern td_err_e td_thr_set_event (const td_thrhandle_t *__th,
413
                                  td_thr_events_t *__event);
414
 
415
/* Disable EVENT for thread TH.  */
416
extern td_err_e td_thr_clear_event (const td_thrhandle_t *__th,
417
                                    td_thr_events_t *__event);
418
 
419
/* Get event message for thread TH.  */
420
extern td_err_e td_thr_event_getmsg (const td_thrhandle_t *__th,
421
                                     td_event_msg_t *__msg);
422
 
423
 
424
/* Set priority of thread TH.  */
425
extern td_err_e td_thr_setprio (const td_thrhandle_t *__th, int __prio);
426
 
427
 
428
/* Set pending signals for thread TH.  */
429
extern td_err_e td_thr_setsigpending (const td_thrhandle_t *__th,
430
                                      unsigned char __n, const sigset_t *__ss);
431
 
432
/* Set signal mask for thread TH.  */
433
extern td_err_e td_thr_sigsetmask (const td_thrhandle_t *__th,
434
                                   const sigset_t *__ss);
435
 
436
 
437
/* Return thread local data associated with key TK in thread TH.  */
438
extern td_err_e td_thr_tsd (const td_thrhandle_t *__th,
439
                            const thread_key_t __tk, void **__data);
440
 
441
 
442
/* Suspend execution of thread TH.  */
443
extern td_err_e td_thr_dbsuspend (const td_thrhandle_t *__th);
444
 
445
/* Resume execution of thread TH.  */
446
extern td_err_e td_thr_dbresume (const td_thrhandle_t *__th);
447
 
448
#endif  /* thread_db.h */
449
 
450
#endif /* HAVE_THREAD_DB_H */

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