Annotation of OpenXM_contrib2/asir2000/gc/mark_rts.c, Revision 1.7
1.1 noro 1: /*
2: * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers
3: * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
4: *
5: * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
6: * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
7: *
8: * Permission is hereby granted to use or copy this program
9: * for any purpose, provided the above notices are retained on all copies.
10: * Permission to modify the code and to distribute modified code is granted,
11: * provided the above notices are retained, and a notice that the code was
12: * modified is included with the above copyright notice.
13: */
14: # include <stdio.h>
1.4 noro 15: # include "private/gc_priv.h"
1.1 noro 16:
17: /* Data structure for list of root sets. */
18: /* We keep a hash table, so that we can filter out duplicate additions. */
19: /* Under Win32, we need to do a better job of filtering overlaps, so */
20: /* we resort to sequential search, and pay the price. */
21: /* This is really declared in gc_priv.h:
22: struct roots {
23: ptr_t r_start;
24: ptr_t r_end;
1.4 noro 25: # if !defined(MSWIN32) && !defined(MSWINCE)
1.1 noro 26: struct roots * r_next;
27: # endif
28: GC_bool r_tmp;
29: -- Delete before registering new dynamic libraries
30: };
31:
32: struct roots GC_static_roots[MAX_ROOT_SETS];
33: */
34:
1.4 noro 35: int GC_no_dls = 0; /* Register dynamic library data segments. */
36:
1.1 noro 37: static int n_root_sets = 0;
38:
39: /* GC_static_roots[0..n_root_sets) contains the valid root sets. */
40:
41: # if !defined(NO_DEBUGGING)
42: /* For debugging: */
43: void GC_print_static_roots()
44: {
45: register int i;
46: size_t total = 0;
47:
48: for (i = 0; i < n_root_sets; i++) {
49: GC_printf2("From 0x%lx to 0x%lx ",
50: (unsigned long) GC_static_roots[i].r_start,
51: (unsigned long) GC_static_roots[i].r_end);
52: if (GC_static_roots[i].r_tmp) {
53: GC_printf0(" (temporary)\n");
54: } else {
55: GC_printf0("\n");
56: }
57: total += GC_static_roots[i].r_end - GC_static_roots[i].r_start;
58: }
59: GC_printf1("Total size: %ld\n", (unsigned long) total);
60: if (GC_root_size != total) {
61: GC_printf1("GC_root_size incorrect: %ld!!\n",
62: (unsigned long) GC_root_size);
63: }
64: }
65: # endif /* NO_DEBUGGING */
66:
67: /* Primarily for debugging support: */
68: /* Is the address p in one of the registered static */
69: /* root sections? */
70: GC_bool GC_is_static_root(p)
71: ptr_t p;
72: {
1.4 noro 73: static int last_root_set = MAX_ROOT_SETS;
1.1 noro 74: register int i;
75:
76:
1.4 noro 77: if (last_root_set < n_root_sets
78: && p >= GC_static_roots[last_root_set].r_start
1.1 noro 79: && p < GC_static_roots[last_root_set].r_end) return(TRUE);
80: for (i = 0; i < n_root_sets; i++) {
81: if (p >= GC_static_roots[i].r_start
82: && p < GC_static_roots[i].r_end) {
83: last_root_set = i;
84: return(TRUE);
85: }
86: }
87: return(FALSE);
88: }
89:
1.4 noro 90: #if !defined(MSWIN32) && !defined(MSWINCE)
1.1 noro 91: /*
92: # define LOG_RT_SIZE 6
93: # define RT_SIZE (1 << LOG_RT_SIZE) -- Power of 2, may be != MAX_ROOT_SETS
94:
95: struct roots * GC_root_index[RT_SIZE];
96: -- Hash table header. Used only to check whether a range is
97: -- already present.
98: -- really defined in gc_priv.h
99: */
100:
101: static int rt_hash(addr)
102: char * addr;
103: {
104: word result = (word) addr;
105: # if CPP_WORDSZ > 8*LOG_RT_SIZE
106: result ^= result >> 8*LOG_RT_SIZE;
107: # endif
108: # if CPP_WORDSZ > 4*LOG_RT_SIZE
109: result ^= result >> 4*LOG_RT_SIZE;
110: # endif
111: result ^= result >> 2*LOG_RT_SIZE;
112: result ^= result >> LOG_RT_SIZE;
113: result &= (RT_SIZE-1);
114: return(result);
115: }
116:
117: /* Is a range starting at b already in the table? If so return a */
118: /* pointer to it, else NIL. */
119: struct roots * GC_roots_present(b)
120: char *b;
121: {
122: register int h = rt_hash(b);
123: register struct roots *p = GC_root_index[h];
124:
125: while (p != 0) {
126: if (p -> r_start == (ptr_t)b) return(p);
127: p = p -> r_next;
128: }
129: return(FALSE);
130: }
131:
132: /* Add the given root structure to the index. */
133: static void add_roots_to_index(p)
134: struct roots *p;
135: {
136: register int h = rt_hash(p -> r_start);
137:
138: p -> r_next = GC_root_index[h];
139: GC_root_index[h] = p;
140: }
141:
1.4 noro 142: # else /* MSWIN32 || MSWINCE */
1.1 noro 143:
144: # define add_roots_to_index(p)
145:
146: # endif
147:
148:
149:
150:
151: word GC_root_size = 0;
152:
153: void GC_add_roots(b, e)
154: char * b; char * e;
155: {
156: DCL_LOCK_STATE;
157:
158: DISABLE_SIGNALS();
159: LOCK();
160: GC_add_roots_inner(b, e, FALSE);
161: UNLOCK();
162: ENABLE_SIGNALS();
163: }
164:
165:
166: /* Add [b,e) to the root set. Adding the same interval a second time */
167: /* is a moderately fast noop, and hence benign. We do not handle */
168: /* different but overlapping intervals efficiently. (We do handle */
169: /* them correctly.) */
170: /* Tmp specifies that the interval may be deleted before */
171: /* reregistering dynamic libraries. */
172: void GC_add_roots_inner(b, e, tmp)
173: char * b; char * e;
174: GC_bool tmp;
175: {
176: struct roots * old;
177:
1.4 noro 178: # if defined(MSWIN32) || defined(MSWINCE)
1.1 noro 179: /* Spend the time to ensure that there are no overlapping */
180: /* or adjacent intervals. */
181: /* This could be done faster with e.g. a */
182: /* balanced tree. But the execution time here is */
183: /* virtually guaranteed to be dominated by the time it */
184: /* takes to scan the roots. */
185: {
186: register int i;
187:
188: for (i = 0; i < n_root_sets; i++) {
189: old = GC_static_roots + i;
190: if ((ptr_t)b <= old -> r_end && (ptr_t)e >= old -> r_start) {
191: if ((ptr_t)b < old -> r_start) {
192: old -> r_start = (ptr_t)b;
193: GC_root_size += (old -> r_start - (ptr_t)b);
194: }
195: if ((ptr_t)e > old -> r_end) {
196: old -> r_end = (ptr_t)e;
197: GC_root_size += ((ptr_t)e - old -> r_end);
198: }
199: old -> r_tmp &= tmp;
200: break;
201: }
202: }
203: if (i < n_root_sets) {
204: /* merge other overlapping intervals */
205: struct roots *other;
206:
207: for (i++; i < n_root_sets; i++) {
208: other = GC_static_roots + i;
209: b = (char *)(other -> r_start);
210: e = (char *)(other -> r_end);
211: if ((ptr_t)b <= old -> r_end && (ptr_t)e >= old -> r_start) {
212: if ((ptr_t)b < old -> r_start) {
213: old -> r_start = (ptr_t)b;
214: GC_root_size += (old -> r_start - (ptr_t)b);
215: }
216: if ((ptr_t)e > old -> r_end) {
217: old -> r_end = (ptr_t)e;
218: GC_root_size += ((ptr_t)e - old -> r_end);
219: }
220: old -> r_tmp &= other -> r_tmp;
221: /* Delete this entry. */
222: GC_root_size -= (other -> r_end - other -> r_start);
223: other -> r_start = GC_static_roots[n_root_sets-1].r_start;
224: other -> r_end = GC_static_roots[n_root_sets-1].r_end;
225: n_root_sets--;
226: }
227: }
228: return;
229: }
230: }
231: # else
232: old = GC_roots_present(b);
233: if (old != 0) {
234: if ((ptr_t)e <= old -> r_end) /* already there */ return;
235: /* else extend */
236: GC_root_size += (ptr_t)e - old -> r_end;
237: old -> r_end = (ptr_t)e;
238: return;
239: }
240: # endif
241: if (n_root_sets == MAX_ROOT_SETS) {
242: ABORT("Too many root sets\n");
243: }
244: GC_static_roots[n_root_sets].r_start = (ptr_t)b;
245: GC_static_roots[n_root_sets].r_end = (ptr_t)e;
246: GC_static_roots[n_root_sets].r_tmp = tmp;
1.4 noro 247: # if !defined(MSWIN32) && !defined(MSWINCE)
1.1 noro 248: GC_static_roots[n_root_sets].r_next = 0;
249: # endif
250: add_roots_to_index(GC_static_roots + n_root_sets);
251: GC_root_size += (ptr_t)e - (ptr_t)b;
252: n_root_sets++;
253: }
254:
1.6 noro 255: static GC_bool roots_were_cleared = FALSE;
1.4 noro 256:
1.1 noro 257: void GC_clear_roots GC_PROTO((void))
258: {
259: DCL_LOCK_STATE;
260:
261: DISABLE_SIGNALS();
262: LOCK();
1.4 noro 263: roots_were_cleared = TRUE;
1.1 noro 264: n_root_sets = 0;
265: GC_root_size = 0;
1.4 noro 266: # if !defined(MSWIN32) && !defined(MSWINCE)
1.1 noro 267: {
268: register int i;
269:
270: for (i = 0; i < RT_SIZE; i++) GC_root_index[i] = 0;
271: }
272: # endif
273: UNLOCK();
274: ENABLE_SIGNALS();
275: }
276:
277: /* Internal use only; lock held. */
1.7 ! noro 278: static void GC_remove_root_at_pos(i)
! 279: int i;
! 280: {
! 281: GC_root_size -= (GC_static_roots[i].r_end - GC_static_roots[i].r_start);
! 282: GC_static_roots[i].r_start = GC_static_roots[n_root_sets-1].r_start;
! 283: GC_static_roots[i].r_end = GC_static_roots[n_root_sets-1].r_end;
! 284: GC_static_roots[i].r_tmp = GC_static_roots[n_root_sets-1].r_tmp;
! 285: n_root_sets--;
! 286: }
! 287:
! 288: #if !defined(MSWIN32) && !defined(MSWINCE)
! 289: static void GC_rebuild_root_index()
! 290: {
! 291: register int i;
! 292:
! 293: for (i = 0; i < RT_SIZE; i++) GC_root_index[i] = 0;
! 294: for (i = 0; i < n_root_sets; i++)
! 295: add_roots_to_index(GC_static_roots + i);
! 296: }
! 297: #endif
! 298:
! 299: /* Internal use only; lock held. */
1.1 noro 300: void GC_remove_tmp_roots()
301: {
302: register int i;
303:
304: for (i = 0; i < n_root_sets; ) {
305: if (GC_static_roots[i].r_tmp) {
1.7 ! noro 306: GC_remove_root_at_pos(i);
1.1 noro 307: } else {
308: i++;
309: }
310: }
1.7 ! noro 311: #if !defined(MSWIN32) && !defined(MSWINCE)
! 312: GC_rebuild_root_index();
! 313: #endif
! 314: }
! 315:
! 316: #if !defined(MSWIN32) && !defined(MSWINCE)
! 317: void GC_remove_roots(b, e)
! 318: char * b; char * e;
! 319: {
! 320: DCL_LOCK_STATE;
1.1 noro 321:
1.7 ! noro 322: DISABLE_SIGNALS();
! 323: LOCK();
! 324: GC_remove_roots_inner(b, e);
! 325: UNLOCK();
! 326: ENABLE_SIGNALS();
! 327: }
! 328:
! 329: /* Should only be called when the lock is held */
! 330: void GC_remove_roots_inner(b,e)
! 331: char * b; char * e;
! 332: {
! 333: int i;
! 334: for (i = 0; i < n_root_sets; ) {
! 335: if (GC_static_roots[i].r_start >= (ptr_t)b && GC_static_roots[i].r_end <= (ptr_t)e) {
! 336: GC_remove_root_at_pos(i);
! 337: } else {
! 338: i++;
! 339: }
! 340: }
! 341: GC_rebuild_root_index();
1.1 noro 342: }
1.7 ! noro 343: #endif /* !defined(MSWIN32) && !defined(MSWINCE) */
1.1 noro 344:
1.4 noro 345: #if defined(MSWIN32) || defined(_WIN32_WCE_EMULATION)
346: /* Workaround for the OS mapping and unmapping behind our back: */
347: /* Is the address p in one of the temporary static root sections? */
348: GC_bool GC_is_tmp_root(p)
349: ptr_t p;
350: {
351: static int last_root_set = MAX_ROOT_SETS;
352: register int i;
353:
354: if (last_root_set < n_root_sets
355: && p >= GC_static_roots[last_root_set].r_start
356: && p < GC_static_roots[last_root_set].r_end)
357: return GC_static_roots[last_root_set].r_tmp;
358: for (i = 0; i < n_root_sets; i++) {
359: if (p >= GC_static_roots[i].r_start
360: && p < GC_static_roots[i].r_end) {
361: last_root_set = i;
362: return GC_static_roots[i].r_tmp;
363: }
364: }
365: return(FALSE);
366: }
367: #endif /* MSWIN32 || _WIN32_WCE_EMULATION */
368:
1.1 noro 369: ptr_t GC_approx_sp()
370: {
371: word dummy;
1.4 noro 372:
373: # ifdef _MSC_VER
374: # pragma warning(disable:4172)
375: # endif
1.1 noro 376: return((ptr_t)(&dummy));
1.4 noro 377: # ifdef _MSC_VER
378: # pragma warning(default:4172)
379: # endif
1.1 noro 380: }
381:
382: /*
383: * Data structure for excluded static roots.
384: * Real declaration is in gc_priv.h.
385:
386: struct exclusion {
387: ptr_t e_start;
388: ptr_t e_end;
389: };
390:
391: struct exclusion GC_excl_table[MAX_EXCLUSIONS];
392: -- Array of exclusions, ascending
393: -- address order.
394: */
395:
396: size_t GC_excl_table_entries = 0; /* Number of entries in use. */
397:
398: /* Return the first exclusion range that includes an address >= start_addr */
399: /* Assumes the exclusion table contains at least one entry (namely the */
400: /* GC data structures). */
401: struct exclusion * GC_next_exclusion(start_addr)
402: ptr_t start_addr;
403: {
404: size_t low = 0;
405: size_t high = GC_excl_table_entries - 1;
406: size_t mid;
407:
408: while (high > low) {
409: mid = (low + high) >> 1;
410: /* low <= mid < high */
411: if ((word) GC_excl_table[mid].e_end <= (word) start_addr) {
412: low = mid + 1;
413: } else {
414: high = mid;
415: }
416: }
417: if ((word) GC_excl_table[low].e_end <= (word) start_addr) return 0;
418: return GC_excl_table + low;
419: }
420:
421: void GC_exclude_static_roots(start, finish)
422: GC_PTR start;
423: GC_PTR finish;
424: {
425: struct exclusion * next;
426: size_t next_index, i;
427:
428: if (0 == GC_excl_table_entries) {
429: next = 0;
430: } else {
431: next = GC_next_exclusion(start);
432: }
433: if (0 != next) {
434: if ((word)(next -> e_start) < (word) finish) {
435: /* incomplete error check. */
436: ABORT("exclusion ranges overlap");
437: }
438: if ((word)(next -> e_start) == (word) finish) {
439: /* extend old range backwards */
440: next -> e_start = (ptr_t)start;
441: return;
442: }
443: next_index = next - GC_excl_table;
444: for (i = GC_excl_table_entries; i > next_index; --i) {
445: GC_excl_table[i] = GC_excl_table[i-1];
446: }
447: } else {
448: next_index = GC_excl_table_entries;
449: }
450: if (GC_excl_table_entries == MAX_EXCLUSIONS) ABORT("Too many exclusions");
451: GC_excl_table[next_index].e_start = (ptr_t)start;
452: GC_excl_table[next_index].e_end = (ptr_t)finish;
453: ++GC_excl_table_entries;
454: }
455:
456: /* Invoke push_conditional on ranges that are not excluded. */
457: void GC_push_conditional_with_exclusions(bottom, top, all)
458: ptr_t bottom;
459: ptr_t top;
460: int all;
461: {
462: struct exclusion * next;
463: ptr_t excl_start;
464:
465: while (bottom < top) {
466: next = GC_next_exclusion(bottom);
467: if (0 == next || (excl_start = next -> e_start) >= top) {
468: GC_push_conditional(bottom, top, all);
469: return;
470: }
471: if (excl_start > bottom) GC_push_conditional(bottom, excl_start, all);
472: bottom = next -> e_end;
473: }
474: }
475:
476: /*
477: * In the absence of threads, push the stack contents.
478: * In the presence of threads, push enough of the current stack
479: * to ensure that callee-save registers saved in collector frames have been
480: * seen.
481: */
482: void GC_push_current_stack(cold_gc_frame)
483: ptr_t cold_gc_frame;
484: {
485: # if defined(THREADS)
486: if (0 == cold_gc_frame) return;
487: # ifdef STACK_GROWS_DOWN
488: GC_push_all_eager(GC_approx_sp(), cold_gc_frame);
1.3 noro 489: /* For IA64, the register stack backing store is handled */
490: /* in the thread-specific code. */
1.1 noro 491: # else
492: GC_push_all_eager( cold_gc_frame, GC_approx_sp() );
493: # endif
494: # else
495: # ifdef STACK_GROWS_DOWN
496: GC_push_all_stack_partially_eager( GC_approx_sp(), GC_stackbottom,
497: cold_gc_frame );
1.2 noro 498: # ifdef IA64
499: /* We also need to push the register stack backing store. */
500: /* This should really be done in the same way as the */
501: /* regular stack. For now we fudge it a bit. */
502: /* Note that the backing store grows up, so we can't use */
503: /* GC_push_all_stack_partially_eager. */
504: {
505: extern word GC_save_regs_ret_val;
506: /* Previously set to backing store pointer. */
507: ptr_t bsp = (ptr_t) GC_save_regs_ret_val;
508: ptr_t cold_gc_bs_pointer;
1.4 noro 509: if (GC_all_interior_pointers) {
1.2 noro 510: cold_gc_bs_pointer = bsp - 2048;
511: if (cold_gc_bs_pointer < BACKING_STORE_BASE) {
512: cold_gc_bs_pointer = BACKING_STORE_BASE;
1.6 noro 513: } else {
514: GC_push_all_stack(BACKING_STORE_BASE, cold_gc_bs_pointer);
1.2 noro 515: }
1.4 noro 516: } else {
1.2 noro 517: cold_gc_bs_pointer = BACKING_STORE_BASE;
1.4 noro 518: }
1.2 noro 519: GC_push_all_eager(cold_gc_bs_pointer, bsp);
520: /* All values should be sufficiently aligned that we */
521: /* dont have to worry about the boundary. */
522: }
523: # endif
1.1 noro 524: # else
525: GC_push_all_stack_partially_eager( GC_stackbottom, GC_approx_sp(),
526: cold_gc_frame );
527: # endif
528: # endif /* !THREADS */
529: }
530:
531: /*
1.4 noro 532: * Push GC internal roots. Only called if there is some reason to believe
533: * these would not otherwise get registered.
534: */
535: void GC_push_gc_structures GC_PROTO((void))
536: {
537: GC_push_finalizer_structures();
538: GC_push_stubborn_structures();
539: # if defined(THREADS)
540: GC_push_thread_structures();
541: # endif
542: }
543:
1.6 noro 544: #ifdef THREAD_LOCAL_ALLOC
545: void GC_mark_thread_local_free_lists();
546: #endif
547:
1.7 ! noro 548: void GC_cond_register_dynamic_libraries()
! 549: {
! 550: # if (defined(DYNAMIC_LOADING) || defined(MSWIN32) || defined(MSWINCE) \
! 551: || defined(PCR)) && !defined(SRC_M3)
! 552: GC_remove_tmp_roots();
! 553: if (!GC_no_dls) GC_register_dynamic_libraries();
! 554: # else
! 555: GC_no_dls = TRUE;
! 556: # endif
! 557: }
! 558:
1.4 noro 559: /*
1.1 noro 560: * Call the mark routines (GC_tl_push for a single pointer, GC_push_conditional
561: * on groups of pointers) on every top level accessible pointer.
562: * If all is FALSE, arrange to push only possibly altered values.
563: * Cold_gc_frame is an address inside a GC frame that
564: * remains valid until all marking is complete.
565: * A zero value indicates that it's OK to miss some
566: * register values.
567: */
568: void GC_push_roots(all, cold_gc_frame)
569: GC_bool all;
570: ptr_t cold_gc_frame;
571: {
1.7 ! noro 572: int i;
! 573: int kind;
1.1 noro 574:
575: /*
576: * Next push static data. This must happen early on, since it's
577: * not robust against mark stack overflow.
578: */
1.7 ! noro 579: /* Reregister dynamic libraries, in case one got added. */
! 580: /* There is some argument for doing this as late as possible, */
! 581: /* especially on win32, where it can change asynchronously. */
! 582: /* In those cases, we do it here. But on other platforms, it's */
! 583: /* not safe with the world stopped, so we do it earlier. */
! 584: # if !defined(REGISTER_LIBRARIES_EARLY)
! 585: GC_cond_register_dynamic_libraries();
1.1 noro 586: # endif
1.4 noro 587:
1.1 noro 588: /* Mark everything in static data areas */
589: for (i = 0; i < n_root_sets; i++) {
590: GC_push_conditional_with_exclusions(
591: GC_static_roots[i].r_start,
592: GC_static_roots[i].r_end, all);
1.4 noro 593: }
594:
1.7 ! noro 595: /* Mark all free list header blocks, if those were allocated from */
! 596: /* the garbage collected heap. This makes sure they don't */
! 597: /* disappear if we are not marking from static data. It also */
! 598: /* saves us the trouble of scanning them, and possibly that of */
! 599: /* marking the freelists. */
! 600: for (kind = 0; kind < GC_n_kinds; kind++) {
! 601: GC_PTR base = GC_base(GC_obj_kinds[kind].ok_freelist);
! 602: if (0 != base) {
! 603: GC_set_mark_bit(base);
! 604: }
! 605: }
! 606:
1.4 noro 607: /* Mark from GC internal roots if those might otherwise have */
608: /* been excluded. */
609: if (GC_no_dls || roots_were_cleared) {
610: GC_push_gc_structures();
1.1 noro 611: }
612:
1.6 noro 613: /* Mark thread local free lists, even if their mark */
614: /* descriptor excludes the link field. */
1.7 ! noro 615: /* If the world is not stopped, this is unsafe. It is */
! 616: /* also unnecessary, since we will do this again with the */
! 617: /* world stopped. */
1.6 noro 618: # ifdef THREAD_LOCAL_ALLOC
1.7 ! noro 619: if (GC_world_stopped) GC_mark_thread_local_free_lists();
1.6 noro 620: # endif
621:
1.1 noro 622: /*
1.6 noro 623: * Now traverse stacks, and mark from register contents.
624: * These must be done last, since they can legitimately overflow
625: * the mark stack.
1.1 noro 626: */
1.6 noro 627: # ifdef USE_GENERIC_PUSH_REGS
628: GC_generic_push_regs(cold_gc_frame);
629: /* Also pushes stack, so that we catch callee-save registers */
630: /* saved inside the GC_push_regs frame. */
631: # else
632: /*
633: * push registers - i.e., call GC_push_one(r) for each
634: * register contents r.
635: */
636: GC_push_regs(); /* usually defined in machine_dep.c */
1.1 noro 637: GC_push_current_stack(cold_gc_frame);
1.6 noro 638: /* In the threads case, this only pushes collector frames. */
639: /* In the case of linux threads on IA64, the hot section of */
1.3 noro 640: /* the main stack is marked here, but the register stack */
641: /* backing store is handled in the threads-specific code. */
1.1 noro 642: # endif
643: if (GC_push_other_roots != 0) (*GC_push_other_roots)();
644: /* In the threads case, this also pushes thread stacks. */
1.6 noro 645: /* Note that without interior pointer recognition lots */
646: /* of stuff may have been pushed already, and this */
647: /* should be careful about mark stack overflows. */
1.1 noro 648: }
649:
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