aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/erl_process.h
blob: d134fe913f67b30e9610815c2e4626e575d28622 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
/*
 * %CopyrightBegin%
 *
 * Copyright Ericsson AB 1996-2016. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * %CopyrightEnd%
 */

#ifndef __PROCESS_H__
#define __PROCESS_H__

#undef ERTS_INCLUDE_SCHEDULER_INTERNALS
#if (defined(ERL_PROCESS_C__) \
     || defined(ERL_PORT_TASK_C__) \
     || (ERTS_GLB_INLINE_INCL_FUNC_DEF \
	 && defined(ERTS_DO_INCL_GLB_INLINE_FUNC_DEF)))
#define ERTS_INCLUDE_SCHEDULER_INTERNALS
#endif

/* #define ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC */

#if !defined(ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC) && defined(DEBUG)
#  define ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC
#endif

typedef struct process Process;

#include "sys.h"

#define ERTS_PROCESS_LOCK_ONLY_PROC_LOCK_TYPE__
#include "erl_process_lock.h" /* Only pull out important types... */
#undef ERTS_PROCESS_LOCK_ONLY_PROC_LOCK_TYPE__

#define ERL_PORT_GET_PORT_TYPE_ONLY__
#include "erl_port.h"
#undef ERL_PORT_GET_PORT_TYPE_ONLY__
#include "erl_vm.h"
#include "erl_smp.h"
#include "erl_message.h"
#include "erl_process_dict.h"
#include "erl_node_container_utils.h"
#include "erl_node_tables.h"
#include "erl_monitors.h"
#include "erl_hl_timer.h"
#include "erl_time.h"
#include "erl_atom_table.h"
#include "external.h"
#include "erl_mseg.h"
#include "erl_async.h"
#include "erl_gc.h"
#define ERTS_ONLY_INCLUDE_TRACE_FLAGS
#include "erl_trace.h"
#undef ERTS_ONLY_INCLUDE_TRACE_FLAGS

#ifdef HIPE
#include "hipe_process.h"
#endif

#undef ERL_THR_PROGRESS_TSD_TYPE_ONLY
#define ERL_THR_PROGRESS_TSD_TYPE_ONLY
#include "erl_thr_progress.h"
#undef ERL_THR_PROGRESS_TSD_TYPE_ONLY

struct ErtsNodesMonitor_;

#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT	0
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT		0

#define ERTS_MAX_NO_OF_SCHEDULERS 1024
#define ERTS_MAX_NO_OF_DIRTY_CPU_SCHEDULERS ERTS_MAX_NO_OF_SCHEDULERS
#define ERTS_MAX_NO_OF_DIRTY_IO_SCHEDULERS ERTS_MAX_NO_OF_SCHEDULERS

#define ERTS_DEFAULT_MAX_PROCESSES (1 << 18)

#define ERTS_HEAP_ALLOC(Type, Size)					\
     erts_alloc((Type), (Size))

#define ERTS_HEAP_REALLOC(Type, Ptr, OldSize, NewSize)			\
     erts_realloc((Type), (Ptr), (NewSize))

#define ERTS_HEAP_FREE(Type, Ptr, Size)					\
     erts_free((Type), (Ptr))

#define INITIAL_MOD 0
#define INITIAL_FUN 1
#define INITIAL_ARI 2

#include "export.h"

struct saved_calls {
   int len;
   int n;
   int cur;
   Export *ct[1];
};

extern Export exp_send, exp_receive, exp_timeout;
extern int erts_eager_check_io;
extern int erts_sched_compact_load;
extern int erts_sched_balance_util;
extern Uint erts_no_schedulers;
#ifdef ERTS_DIRTY_SCHEDULERS
extern Uint erts_no_dirty_cpu_schedulers;
extern Uint erts_no_dirty_io_schedulers;
#endif
extern Uint erts_no_run_queues;
extern int erts_sched_thread_suggested_stack_size;
#define ERTS_SCHED_THREAD_MIN_STACK_SIZE 4	/* Kilo words */
#define ERTS_SCHED_THREAD_MAX_STACK_SIZE 8192	/* Kilo words */

#ifdef ERTS_SMP
#include "erl_bits.h"
#endif

/* process priorities */
#define PRIORITY_MAX          0
#define PRIORITY_HIGH         1
#define PRIORITY_NORMAL       2
#define PRIORITY_LOW          3
#define ERTS_NO_PROC_PRIO_LEVELS      4
#define ERTS_NO_PROC_PRIO_QUEUES      3

#define ERTS_PORT_PRIO_LEVEL ERTS_NO_PROC_PRIO_LEVELS
#define ERTS_NO_PRIO_LEVELS (ERTS_NO_PROC_PRIO_LEVELS + 1)

#define ERTS_RUNQ_FLGS_PROCS_QMASK \
  ((((Uint32) 1) << ERTS_NO_PROC_PRIO_LEVELS) - 1)

#define ERTS_RUNQ_FLGS_QMASK \
  ((((Uint32) 1) << ERTS_NO_PRIO_LEVELS) - 1)

#define ERTS_RUNQ_FLGS_EMIGRATE_SHFT \
  ERTS_NO_PRIO_LEVELS
#define ERTS_RUNQ_FLGS_IMMIGRATE_SHFT \
  (ERTS_RUNQ_FLGS_EMIGRATE_SHFT + ERTS_NO_PRIO_LEVELS)
#define ERTS_RUNQ_FLGS_EVACUATE_SHFT \
  (ERTS_RUNQ_FLGS_IMMIGRATE_SHFT + ERTS_NO_PRIO_LEVELS)
#define ERTS_RUNQ_FLGS_EMIGRATE_QMASK \
  (ERTS_RUNQ_FLGS_QMASK << ERTS_RUNQ_FLGS_EMIGRATE_SHFT)
#define ERTS_RUNQ_FLGS_IMMIGRATE_QMASK \
  (ERTS_RUNQ_FLGS_QMASK << ERTS_RUNQ_FLGS_IMMIGRATE_SHFT)
#define ERTS_RUNQ_FLGS_EVACUATE_QMASK \
  (ERTS_RUNQ_FLGS_QMASK << ERTS_RUNQ_FLGS_EVACUATE_SHFT)

#define ERTS_RUNQ_FLG_BASE2 \
  (ERTS_RUNQ_FLGS_EVACUATE_SHFT + ERTS_NO_PRIO_LEVELS)

#define ERTS_RUNQ_FLG_OUT_OF_WORK \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 0))
#define ERTS_RUNQ_FLG_HALFTIME_OUT_OF_WORK \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 1))
#define ERTS_RUNQ_FLG_SUSPENDED \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 2))
#define ERTS_RUNQ_FLG_CHK_CPU_BIND \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 3))
#define ERTS_RUNQ_FLG_INACTIVE \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 4))
#define ERTS_RUNQ_FLG_NONEMPTY \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 5))
#define ERTS_RUNQ_FLG_PROTECTED \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 6))
#define ERTS_RUNQ_FLG_EXEC \
  (((Uint32) 1) << (ERTS_RUNQ_FLG_BASE2 + 7))

#define ERTS_RUNQ_FLG_MAX (ERTS_RUNQ_FLG_BASE2 + 8)

#define ERTS_RUNQ_FLGS_MIGRATION_QMASKS	\
  (ERTS_RUNQ_FLGS_EMIGRATE_QMASK	\
   | ERTS_RUNQ_FLGS_IMMIGRATE_QMASK	\
   | ERTS_RUNQ_FLGS_EVACUATE_QMASK)

#define ERTS_RUNQ_FLGS_MIGRATION_INFO \
  (ERTS_RUNQ_FLG_INACTIVE \
   | ERTS_RUNQ_FLG_OUT_OF_WORK \
   | ERTS_RUNQ_FLG_HALFTIME_OUT_OF_WORK)

#define ERTS_RUNQ_FLG_EMIGRATE(PRIO) \
  (((Uint32) 1) << (ERTS_RUNQ_FLGS_EMIGRATE_SHFT + (PRIO)))
#define ERTS_CHK_RUNQ_FLG_EMIGRATE(FLGS, PRIO) \
  ((FLGS) & ERTS_RUNQ_FLG_EMIGRATE((PRIO)))
#define ERTS_SET_RUNQ_FLG_EMIGRATE(FLGS, PRIO) \
  ((FLGS) |= ERTS_RUNQ_FLG_EMIGRATE((PRIO)))
#define ERTS_UNSET_RUNQ_FLG_EMIGRATE(FLGS, PRIO) \
  ((FLGS) &= ~ERTS_RUNQ_FLG_EMIGRATE((PRIO)))

#define ERTS_RUNQ_FLG_IMMIGRATE(PRIO) \
  (((Uint32) 1) << (ERTS_RUNQ_FLGS_IMMIGRATE_SHFT + (PRIO)))
#define ERTS_CHK_RUNQ_FLG_IMMIGRATE(FLGS, PRIO) \
  ((FLGS) & ERTS_RUNQ_FLG_IMMIGRATE((PRIO)))
#define ERTS_SET_RUNQ_FLG_IMMIGRATE(FLGS, PRIO) \
  ((FLGS) |= ERTS_RUNQ_FLG_IMMIGRATE((PRIO)))
#define ERTS_UNSET_RUNQ_FLG_IMMIGRATE(FLGS, PRIO) \
  ((FLGS) &= ~ERTS_RUNQ_FLG_IMMIGRATE((PRIO)))

#define ERTS_RUNQ_FLG_EVACUATE(PRIO) \
  (((Uint32) 1) << (ERTS_RUNQ_FLGS_EVACUATE_SHFT + (PRIO)))
#define ERTS_CHK_RUNQ_FLG_EVACUATE(FLGS, PRIO) \
  ((FLGS) & ERTS_RUNQ_FLG_EVACUATE((PRIO)))
#define ERTS_SET_RUNQ_FLG_EVACUATE(FLGS, PRIO) \
  ((FLGS) |= ERTS_RUNQ_FLG_EVACUATE((PRIO)))
#define ERTS_UNSET_RUNQ_FLG_EVACUATE(FLGS, PRIO) \
  ((FLGS) &= ~ERTS_RUNQ_FLG_EVACUATE((PRIO)))

#define ERTS_RUNQ_FLGS_INIT(RQ, INIT)					\
    erts_smp_atomic32_init_nob(&(RQ)->flags, (erts_aint32_t) (INIT))
#define ERTS_RUNQ_FLGS_SET(RQ, FLGS)					\
    ((Uint32) erts_smp_atomic32_read_bor_relb(&(RQ)->flags,		\
					      (erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_FLGS_SET_NOB(RQ, FLGS)				\
    ((Uint32) erts_smp_atomic32_read_bor_nob(&(RQ)->flags,		\
					     (erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_FLGS_BSET(RQ, MSK, FLGS)				\
    ((Uint32) erts_smp_atomic32_read_bset_relb(&(RQ)->flags,		\
					       (erts_aint32_t) (MSK),	\
					       (erts_aint32_t) (FLGS)))
#define ERTS_RUNQ_FLGS_UNSET(RQ, FLGS)					\
    ((Uint32) erts_smp_atomic32_read_band_relb(&(RQ)->flags,		\
					       (erts_aint32_t) ~(FLGS)))
#define ERTS_RUNQ_FLGS_UNSET_NOB(RQ, FLGS)					\
    ((Uint32) erts_smp_atomic32_read_band_nob(&(RQ)->flags,		\
					      (erts_aint32_t) ~(FLGS)))
#define ERTS_RUNQ_FLGS_GET(RQ)						\
    ((Uint32) erts_smp_atomic32_read_acqb(&(RQ)->flags))
#define ERTS_RUNQ_FLGS_GET_NOB(RQ)					\
    ((Uint32) erts_smp_atomic32_read_nob(&(RQ)->flags))
#define ERTS_RUNQ_FLGS_GET_MB(RQ)					\
    ((Uint32) erts_smp_atomic32_read_mb(&(RQ)->flags))
#define ERTS_RUNQ_FLGS_READ_BSET(RQ, MSK, FLGS)		  		\
    ((Uint32) erts_smp_atomic32_read_bset_relb(&(RQ)->flags, 		\
					       (erts_aint32_t) (MSK),	\
					       (erts_aint32_t) (FLGS)))

typedef enum {
    ERTS_SCHDLR_SSPND_DONE_MSCHED_BLOCKED,
    ERTS_SCHDLR_SSPND_DONE_NMSCHED_BLOCKED,
    ERTS_SCHDLR_SSPND_YIELD_DONE_MSCHED_BLOCKED,
    ERTS_SCHDLR_SSPND_YIELD_DONE_NMSCHED_BLOCKED,
    ERTS_SCHDLR_SSPND_DONE,
    ERTS_SCHDLR_SSPND_YIELD_RESTART,
    ERTS_SCHDLR_SSPND_YIELD_DONE,
    ERTS_SCHDLR_SSPND_EINVAL
} ErtsSchedSuspendResult;

typedef enum {
    ERTS_MIGRATE_SUCCESS,
    ERTS_MIGRATE_FAILED_NOT_IN_RUNQ,
    ERTS_MIGRATE_FAILED_RUNQ_CHANGED,
    ERTS_MIGRATE_FAILED_RUNQ_SUSPENDED
} ErtsMigrateResult;

#define ERTS_SSI_FLG_SLEEPING		(((erts_aint32_t) 1) << 0)
#define ERTS_SSI_FLG_POLL_SLEEPING 	(((erts_aint32_t) 1) << 1)
#define ERTS_SSI_FLG_TSE_SLEEPING 	(((erts_aint32_t) 1) << 2)
#define ERTS_SSI_FLG_WAITING		(((erts_aint32_t) 1) << 3)
#define ERTS_SSI_FLG_SUSPENDED	 	(((erts_aint32_t) 1) << 4)

#define ERTS_SSI_FLGS_MAX                                       5

#define ERTS_SSI_FLGS_SLEEP_TYPE			\
 (ERTS_SSI_FLG_TSE_SLEEPING|ERTS_SSI_FLG_POLL_SLEEPING)

#define ERTS_SSI_FLGS_SLEEP				\
 (ERTS_SSI_FLG_SLEEPING|ERTS_SSI_FLGS_SLEEP_TYPE)

#define ERTS_SSI_FLGS_ALL				\
 (ERTS_SSI_FLGS_SLEEP					\
  | ERTS_SSI_FLG_WAITING				\
  | ERTS_SSI_FLG_SUSPENDED)

/*
 * Keep ERTS_SSI_AUX_WORK flags ordered in expected frequency
 * order relative eachother. Most frequent at lowest at lowest
 * index.
 *
 * ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED_IX *need* to be
 * highest index...
 *
 * Remember to update description in erts_pre_init_process()
 * when adding new flags...
 */

typedef enum {
    ERTS_SSI_AUX_WORK_DELAYED_AW_WAKEUP_IX,
    ERTS_SSI_AUX_WORK_DD_IX,
    ERTS_SSI_AUX_WORK_DD_THR_PRGR_IX,
    ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC_IX,
    ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM_IX,
    ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP_IX,
    ERTS_SSI_AUX_WORK_CNCLD_TMRS_IX,
    ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR_IX,
    ERTS_SSI_AUX_WORK_ASYNC_READY_IX,
    ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN_IX,
    ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX,
    ERTS_SSI_AUX_WORK_MISC_IX,
    ERTS_SSI_AUX_WORK_PENDING_EXITERS_IX,
    ERTS_SSI_AUX_WORK_SET_TMO_IX,
    ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX,
    ERTS_SSI_AUX_WORK_REAP_PORTS_IX,
    ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED_IX, /* SHOULD be last flag index */

    ERTS_SSI_AUX_WORK_NO_FLAGS /* Not a flag index... */
} ErtsSsiAuxWorkFlagIndex;

#define ERTS_SSI_AUX_WORK_DELAYED_AW_WAKEUP \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DELAYED_AW_WAKEUP_IX)
#define ERTS_SSI_AUX_WORK_DD \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DD_IX)
#define ERTS_SSI_AUX_WORK_DD_THR_PRGR \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DD_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_FIX_ALLOC_DEALLOC_IX)
#define ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_FIX_ALLOC_LOWER_LIM_IX)
#define ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_THR_PRGR_LATER_OP_IX)
#define ERTS_SSI_AUX_WORK_CNCLD_TMRS \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_CNCLD_TMRS_IX)
#define ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_CNCLD_TMRS_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_ASYNC_READY \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_ASYNC_READY_IX)
#define ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_ASYNC_READY_CLEAN_IX)
#define ERTS_SSI_AUX_WORK_MISC_THR_PRGR \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_THR_PRGR_IX)
#define ERTS_SSI_AUX_WORK_MISC \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MISC_IX)
#define ERTS_SSI_AUX_WORK_PENDING_EXITERS \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_PENDING_EXITERS_IX)
#define ERTS_SSI_AUX_WORK_SET_TMO \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_SET_TMO_IX)
#define ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_MSEG_CACHE_CHECK_IX)
#define ERTS_SSI_AUX_WORK_REAP_PORTS \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_REAP_PORTS_IX)
#define ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED \
    (((erts_aint32_t) 1) << ERTS_SSI_AUX_WORK_DEBUG_WAIT_COMPLETED_IX)

typedef struct ErtsSchedulerSleepInfo_ ErtsSchedulerSleepInfo;

#ifdef ERTS_DIRTY_SCHEDULERS
typedef struct {
    erts_smp_spinlock_t lock;
    ErtsSchedulerSleepInfo *list;
} ErtsSchedulerSleepList;
#endif

struct ErtsSchedulerSleepInfo_ {
#ifdef ERTS_SMP
    ErtsSchedulerSleepInfo *next;
    ErtsSchedulerSleepInfo *prev;
    erts_smp_atomic32_t flags;
    erts_tse_t *event;
#endif
    erts_atomic32_t aux_work;
};

/* times to reschedule low prio process before running */
#define RESCHEDULE_LOW        8

#define ERTS_MAX_MISC_OPS 5

#define ERTS_FULL_REDS_HISTORY_AVG_SHFT 3
#define ERTS_FULL_REDS_HISTORY_SIZE \
   ((1 << ERTS_FULL_REDS_HISTORY_AVG_SHFT) - 1)

typedef struct ErtsProcList_ ErtsProcList;
struct ErtsProcList_ {
    Eterm pid;
    Uint64 started_interval;
    ErtsProcList* next;
    ErtsProcList* prev;
};

typedef struct ErtsMiscOpList_ ErtsMiscOpList;
struct ErtsMiscOpList_ {
    ErtsMiscOpList *next;
    void (*func)(void *arg);
    void *arg;
};

typedef struct {
    Process* first;
    Process* last;
} ErtsRunPrioQueue;

typedef struct ErtsSchedulerData_ ErtsSchedulerData;

typedef struct ErtsRunQueue_ ErtsRunQueue;

typedef struct {
    erts_smp_atomic32_t len;
    erts_aint32_t max_len;
    int reds;
} ErtsRunQueueInfo;


#ifdef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
#  undef ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT
#  define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT 1
#endif

#ifdef ERTS_SMP

#undef ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
#define ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT_OPT

typedef erts_atomic64_t ErtsAtomicSchedTime;

#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
typedef struct {
    ErtsAtomicSchedTime last;
    struct {
	Uint64 short_interval;
	Uint64 long_interval;
    } worktime;
    int is_working;
} ErtsRunQueueSchedUtil;
#endif

typedef struct {
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
    int sched_util;
#endif
    Uint32 flags;
    ErtsRunQueue *misc_evac_runq;
    struct {
	struct {
	    int this;
	    int other;
	} limit;
	ErtsRunQueue *runq;
	Uint32 flags;
    } prio[ERTS_NO_PRIO_LEVELS];
} ErtsMigrationPath;

typedef struct ErtsMigrationPaths_ ErtsMigrationPaths;

struct ErtsMigrationPaths_ {
    void *block;
    ErtsMigrationPaths *next;
    ErtsThrPrgrVal thr_prgr;
    ErtsMigrationPath mpath[1];
};

#endif /* ERTS_SMP */

struct ErtsRunQueue_ {
    int ix;

    erts_smp_mtx_t mtx;
    erts_smp_cnd_t cnd;

#ifdef ERTS_DIRTY_SCHEDULERS
#ifdef ERTS_SMP
    ErtsSchedulerSleepList sleepers;
#endif
#endif

    ErtsSchedulerData *scheduler;
    int waiting; /* < 0 in sys schedule; > 0 on cnd variable */
    int woken;
    erts_smp_atomic32_t flags;
    int check_balance_reds;
    int full_reds_history_sum;
    int full_reds_history[ERTS_FULL_REDS_HISTORY_SIZE];
    int out_of_work_count;
    erts_aint32_t max_len;
    erts_smp_atomic32_t len;
    int wakeup_other;
    int wakeup_other_reds;
    int halt_in_progress;

    struct {
	ErtsProcList *pending_exiters;
	Uint context_switches;
	Uint reductions;

	ErtsRunQueueInfo prio_info[ERTS_NO_PROC_PRIO_LEVELS];

	/* We use the same prio queue for low and
	   normal prio processes */
	ErtsRunPrioQueue prio[ERTS_NO_PROC_PRIO_LEVELS-1];
    } procs;

    struct {
	ErtsMiscOpList *start;
	ErtsMiscOpList *end;
	erts_smp_atomic_t evac_runq;
    } misc;

    struct {
	ErtsRunQueueInfo info;
	Port *start;
	Port *end;
    } ports;
#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
    ErtsRunQueueSchedUtil sched_util;
#endif
};

#ifdef ERTS_SMP
extern long erts_runq_supervision_interval;
#endif

typedef union {
    ErtsRunQueue runq;
    char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsRunQueue))];
} ErtsAlignedRunQueue;

extern ErtsAlignedRunQueue *erts_aligned_run_queues;

#define ERTS_PROC_REDUCTIONS_EXECUTED(SD, RQ, PRIO, REDS, AREDS)\
do {								\
    (RQ)->procs.reductions += (AREDS);				\
    (RQ)->procs.prio_info[(PRIO)].reds += (REDS);		\
    (RQ)->check_balance_reds -= (REDS);				\
    (RQ)->wakeup_other_reds += (AREDS);				\
    (SD)->check_time_reds += (AREDS);				\
} while (0)

#define ERTS_PORT_REDUCTIONS_EXECUTED(SD, RQ, REDS)		\
do {								\
    (RQ)->ports.info.reds += (REDS);				\
    (RQ)->check_balance_reds -= (REDS);				\
    (RQ)->wakeup_other_reds += (REDS);				\
    (SD)->check_time_reds += (REDS);				\
} while (0)

typedef struct {
    int need; /* "+sbu true" or scheduler_wall_time enabled */
    int enabled;
    Uint64 start;
    struct {
	Uint64 total;
	Uint64 start;
	int currently;
    } working;
} ErtsSchedWallTime;

typedef struct {
    int sched;
    erts_aint32_t aux_work;
} ErtsDelayedAuxWorkWakeupJob;

typedef struct {
    int sched_id;
    ErtsSchedulerData *esdp;
    ErtsSchedulerSleepInfo *ssi;
#ifdef ERTS_SMP
    ErtsThrPrgrVal current_thr_prgr;
    ErtsThrPrgrVal latest_wakeup;
#endif
    struct {
	int ix;
#ifdef ERTS_SMP
	ErtsThrPrgrVal thr_prgr;
#endif
    } misc;
#ifdef ERTS_SMP
    struct {
	ErtsThrPrgrVal thr_prgr;
    } dd;
    struct {
	ErtsThrPrgrVal thr_prgr;
    } cncld_tmrs;
    struct {
	ErtsThrPrgrVal thr_prgr;
	UWord size;
	ErtsThrPrgrLaterOp *first;
	ErtsThrPrgrLaterOp *last;
    } later_op;
#endif
#ifdef ERTS_USE_ASYNC_READY_Q
    struct {
#ifdef ERTS_SMP
	int need_thr_prgr;
	ErtsThrPrgrVal thr_prgr;
#endif
	void *queue;
    } async_ready;
#endif
#ifdef ERTS_SMP
    struct {
	Uint64 next;
	int *sched2jix;
	int jix;
	ErtsDelayedAuxWorkWakeupJob *job;
    } delayed_wakeup;
#endif
    struct {
	struct {
	    erts_aint32_t flags;
	    void (*callback)(void *);
	    void *arg;
	} wait_completed;
    } debug;
} ErtsAuxWorkData;

#ifdef ERTS_DIRTY_SCHEDULERS
typedef enum {
    ERTS_DIRTY_CPU_SCHEDULER,
    ERTS_DIRTY_IO_SCHEDULER
} ErtsDirtySchedulerType;

typedef union {
    struct {
	ErtsDirtySchedulerType type: 1;
	Uint num: sizeof(Uint)*8 - 1;
    } s;
    Uint no;
} ErtsDirtySchedId;
#endif

struct ErtsSchedulerData_ {
    /*
     * Keep X registers first (so we get as many low
     * numbered registers as possible in the same cache
     * line).
     */
    Eterm* x_reg_array;		/* X registers */
    FloatDef* f_reg_array;	/* Floating point registers. */

    ErtsTimerWheel *timer_wheel;
    ErtsNextTimeoutRef next_tmo_ref;
    ErtsHLTimerService *timer_service;
#ifdef ERTS_SMP
    ethr_tid tid;		/* Thread id */
    struct erl_bits_state erl_bits_state; /* erl_bits.c state */
    void *match_pseudo_process; /* erl_db_util.c:db_prog_match() */
    Process *free_process;
    ErtsThrPrgrData thr_progress_data;
#endif
    ErtsSchedulerSleepInfo *ssi;
    Process *current_process;
    Uint no;			/* Scheduler number for normal schedulers */
#ifdef ERTS_DIRTY_SCHEDULERS
    ErtsDirtySchedId dirty_no;  /* Scheduler number for dirty schedulers */
    Process *dirty_shadow_process;
#endif
    Port *current_port;
    ErtsRunQueue *run_queue;
    int virtual_reds;
    int cpu_id;			/* >= 0 when bound */
    ErtsAuxWorkData aux_work_data;
    ErtsAtomCacheMap atom_cache_map;

    ErtsMonotonicTime last_monotonic_time;
    int check_time_reds;

    Uint32 thr_id;
    Uint64 unique;
    Uint64 ref;

    ErtsSchedAllocData alloc_data;

    struct {
	Uint64 out;
	Uint64 in;
    } io;

    Uint64 reductions;
    ErtsSchedWallTime sched_wall_time;
    ErtsGCInfo gc_info;
    ErtsPortTaskHandle nosuspend_port_task_handle;

#ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC
    erts_alloc_verify_func_t verify_unused_temp_alloc;
    Allctr_t *verify_unused_temp_alloc_data;
#endif
};

typedef union {
    ErtsSchedulerData esd;
    char align[ERTS_ALC_CACHE_LINE_ALIGN_SIZE(sizeof(ErtsSchedulerData))];
} ErtsAlignedSchedulerData;

extern ErtsAlignedSchedulerData *erts_aligned_scheduler_data;
#ifdef ERTS_DIRTY_SCHEDULERS
extern ErtsAlignedSchedulerData *erts_aligned_dirty_cpu_scheduler_data;
extern ErtsAlignedSchedulerData *erts_aligned_dirty_io_scheduler_data;
#endif

#ifndef ERTS_SMP
extern ErtsSchedulerData *erts_scheduler_data;
#endif

#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK)
int erts_smp_lc_runq_is_locked(ErtsRunQueue *);
#endif

#ifdef ERTS_INCLUDE_SCHEDULER_INTERNALS

#ifdef ERTS_SMP
void erts_empty_runq(ErtsRunQueue *rq);
void erts_non_empty_runq(ErtsRunQueue *rq);
#endif


/*
 * Run queue locked during modifications. We use atomic ops since
 * other threads peek at values without run queue lock.
 */

ERTS_GLB_INLINE void erts_smp_inc_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio);
ERTS_GLB_INLINE void erts_smp_dec_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio);
ERTS_GLB_INLINE void erts_smp_reset_max_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE void
erts_smp_inc_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio)
{
    erts_aint32_t len;

    ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq));

    len = erts_smp_atomic32_read_dirty(&rq->len);

#ifdef ERTS_SMP
    if (len == 0)
	erts_non_empty_runq(rq);
#endif
    len++;
    if (rq->max_len < len)
	rq->max_len = len;
    ASSERT(len > 0);
    erts_smp_atomic32_set_nob(&rq->len, len);

    len = erts_smp_atomic32_read_dirty(&rqi->len);
    ASSERT(len >= 0);
    if (len == 0) {
	ASSERT((erts_smp_atomic32_read_nob(&rq->flags)
		& ((erts_aint32_t) (1 << prio))) == 0);
	erts_smp_atomic32_read_bor_nob(&rq->flags,
				       (erts_aint32_t) (1 << prio));
    }
    len++;
    if (rqi->max_len < len)
	rqi->max_len = len;

    erts_smp_atomic32_set_relb(&rqi->len, len);
}

ERTS_GLB_INLINE void
erts_smp_dec_runq_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi, int prio)
{
    erts_aint32_t len;

    ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq));

    len = erts_smp_atomic32_read_dirty(&rq->len);
    len--;
    ASSERT(len >= 0);
    erts_smp_atomic32_set_nob(&rq->len, len);

    len = erts_smp_atomic32_read_dirty(&rqi->len);
    len--;
    ASSERT(len >= 0);
    if (len == 0) {
	ASSERT((erts_smp_atomic32_read_nob(&rq->flags)
		& ((erts_aint32_t) (1 << prio))));
	erts_smp_atomic32_read_band_nob(&rq->flags,
					~((erts_aint32_t) (1 << prio)));
    }
    erts_smp_atomic32_set_relb(&rqi->len, len);

}

ERTS_GLB_INLINE void
erts_smp_reset_max_len(ErtsRunQueue *rq, ErtsRunQueueInfo *rqi)
{
    erts_aint32_t len;

    ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked(rq));

    len = erts_smp_atomic32_read_dirty(&rqi->len);
    ASSERT(rqi->max_len >= len);
    rqi->max_len = len;
}

#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */

#define RUNQ_READ_LEN(X) erts_smp_atomic32_read_nob((X))

#endif /* ERTS_INCLUDE_SCHEDULER_INTERNALS */

/*
 * Process Specific Data.
 *
 * NOTE: Only use PSD for very rarely used data.
 */

#define ERTS_PSD_ERROR_HANDLER			0
#define ERTS_PSD_SAVED_CALLS_BUF		1
#define ERTS_PSD_SCHED_ID			2
#define ERTS_PSD_CALL_TIME_BP			3
#define ERTS_PSD_DELAYED_GC_TASK_QS		4
#define ERTS_PSD_NIF_TRAP_EXPORT		5
#define ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF	6

#define ERTS_PSD_SIZE				7

#if !defined(HIPE)
#  undef ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF
#  undef ERTS_PSD_SIZE
#  define ERTS_PSD_SIZE 6
#endif

typedef struct {
    void *data[ERTS_PSD_SIZE];
} ErtsPSD;

#ifdef ERTS_ENABLE_LOCK_CHECK
#define ERTS_LC_PSD_ANY_LOCK (~ERTS_PROC_LOCKS_ALL)

#define ERTS_PSD_ERROR_HANDLER_BUF_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_ERROR_HANDLER_BUF_SET_LOCKS ERTS_PROC_LOCK_MAIN

#define ERTS_PSD_SAVED_CALLS_BUF_GET_LOCKS ((ErtsProcLocks) 0)
#define ERTS_PSD_SAVED_CALLS_BUF_SET_LOCKS ((ErtsProcLocks) 0)

#define ERTS_PSD_SCHED_ID_GET_LOCKS ERTS_PROC_LOCK_STATUS
#define ERTS_PSD_SCHED_ID_SET_LOCKS ERTS_PROC_LOCK_STATUS

#define ERTS_PSD_CALL_TIME_BP_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_CALL_TIME_BP_SET_LOCKS ERTS_PROC_LOCK_MAIN

#define ERTS_PSD_DELAYED_GC_TASK_QS_GET_LOCKS ERTS_PROC_LOCK_MAIN
#define ERTS_PSD_DELAYED_GC_TASK_QS_SET_LOCKS ERTS_PROC_LOCK_MAIN

#define ERTS_PSD_NIF_TRAP_EXPORT_GET_LOCKS ((ErtsProcLocks) 0)
#define ERTS_PSD_NIF_TRAP_EXPORT_SET_LOCKS ((ErtsProcLocks) 0)

typedef struct {
    ErtsProcLocks get_locks;
    ErtsProcLocks set_locks;
} ErtsLcPSDLocks;

extern ErtsLcPSDLocks erts_psd_required_locks[ERTS_PSD_SIZE];

#endif

#define ERTS_SCHED_STAT_MODIFY_DISABLE		1
#define ERTS_SCHED_STAT_MODIFY_ENABLE		2
#define ERTS_SCHED_STAT_MODIFY_CLEAR		3

typedef struct {
    erts_smp_spinlock_t lock;
    int enabled;
    struct {
	Eterm name;
	Uint total_executed;
	Uint executed;
	Uint total_migrated;
	Uint migrated;
    } prio[ERTS_NO_PRIO_LEVELS];
} erts_sched_stat_t;

extern erts_sched_stat_t erts_sched_stat;

typedef struct {
    Eterm reason;
    ErlHeapFragment *bp;
} ErtsPendExit;

typedef struct ErtsProcSysTask_ ErtsProcSysTask;
typedef struct ErtsProcSysTaskQs_ ErtsProcSysTaskQs;

#ifdef ERTS_SMP

typedef struct ErtsPendingSuspend_ ErtsPendingSuspend;
struct ErtsPendingSuspend_ {
    ErtsPendingSuspend *next;
    ErtsPendingSuspend *end;
    Eterm pid;
    void (*handle_func)(Process *suspendee,
			ErtsProcLocks suspendee_locks,
			int suspendee_alive,
			Eterm pid);
};

#endif


/* Defines to ease the change of memory architecture */
#  define HEAP_START(p)     (p)->heap
#  define HEAP_TOP(p)       (p)->htop
#  define HEAP_LIMIT(p)     (p)->stop
#  define HEAP_END(p)       (p)->hend
#  define HEAP_SIZE(p)      (p)->heap_sz
#  define STACK_START(p)    (p)->hend
#  define STACK_TOP(p)      (p)->stop
#  define STACK_END(p)      (p)->htop
#  define HIGH_WATER(p)     (p)->high_water
#  define OLD_HEND(p)       (p)->old_hend
#  define OLD_HTOP(p)       (p)->old_htop
#  define OLD_HEAP(p)       (p)->old_heap
#  define GEN_GCS(p)        (p)->gen_gcs
#  define MAX_GEN_GCS(p)    (p)->max_gen_gcs
#  define FLAGS(p)          (p)->flags
#  define MBUF(p)           (p)->mbuf
#  define HALLOC_MBUF(p)    (p)->halloc_mbuf
#  define MBUF_SIZE(p)      (p)->mbuf_sz
#  define MSO(p)            (p)->off_heap
#  define MIN_HEAP_SIZE(p)  (p)->min_heap_size

#  define MIN_VHEAP_SIZE(p)   (p)->min_vheap_size
#  define BIN_VHEAP_SZ(p)     (p)->bin_vheap_sz
#  define BIN_OLD_VHEAP_SZ(p) (p)->bin_old_vheap_sz
#  define BIN_OLD_VHEAP(p)    (p)->bin_old_vheap

#  define MAX_HEAP_SIZE_GET(p)     ((p)->max_heap_size >> 2)
#  define MAX_HEAP_SIZE_SET(p, sz) ((p)->max_heap_size = ((sz) << 2) |  \
                                    MAX_HEAP_SIZE_FLAGS_GET(p))
#  define MAX_HEAP_SIZE_FLAGS_GET(p)          ((p)->max_heap_size & 0x3)
#  define MAX_HEAP_SIZE_FLAGS_SET(p, flags)   ((p)->max_heap_size = flags | \
                                               ((p)->max_heap_size & ~0x3))
#  define MAX_HEAP_SIZE_KILL 1
#  define MAX_HEAP_SIZE_LOG  2

struct process {
    ErtsPTabElementCommon common; /* *Need* to be first in struct */

    /* All fields in the PCB that differs between different heap
     * architectures, have been moved to the end of this struct to
     * make sure that as few offsets as possible differ. Different
     * offsets between memory architectures in this struct, means that
     * native code have to use functions instead of constants.
     */

    Eterm* htop;		/* Heap top */
    Eterm* stop;		/* Stack top */
    Eterm* heap;		/* Heap start */
    Eterm* hend;		/* Heap end */
    Uint heap_sz;		/* Size of heap in words */
    Uint min_heap_size;         /* Minimum size of heap (in words). */
    Uint min_vheap_size;        /* Minimum size of virtual heap (in words). */

#if !defined(NO_FPE_SIGNALS) || defined(HIPE)
    volatile unsigned long fp_exception;
#endif

#ifdef HIPE
    /* HiPE-specific process fields. Put it early in struct process,
       to enable smaller & faster addressing modes on the x86. */
    struct hipe_process_state hipe;
#endif

    /*
     * Moved to after "struct hipe_process_state hipe", as a temporary fix for
     * LLVM hard-coding offsetof(struct process, hipe.nstack) (sic!)
     * (see void X86FrameLowering::adjustForHiPEPrologue(...) in
     * lib/Target/X86/X86FrameLowering.cpp).
     *
     * Used to be below "Eterm* hend".
     */
    Eterm* abandoned_heap;

    /*
     * Saved x registers.
     */
    Uint arity;			/* Number of live argument registers (only valid
				 * when process is *not* running).
				 */
    Eterm* arg_reg;		/* Pointer to argument registers. */
    unsigned max_arg_reg;	/* Maximum number of argument registers available. */
    Eterm def_arg_reg[6];	/* Default array for argument registers. */

    BeamInstr* cp;		/* (untagged) Continuation pointer (for threaded code). */
    BeamInstr* i;		/* Program counter for threaded code. */
    Sint catches;		/* Number of catches on stack */
    Sint fcalls;		/* 
				 * Number of reductions left to execute.
				 * Only valid for the current process.
				 */
    Uint32 rcount;		/* suspend count */
    int  schedule_count;	/* Times left to reschedule a low prio process */
    Uint reds;			/* No of reductions for this process  */
    Eterm group_leader;		/* Pid in charge
				   (can be boxed) */
    Uint flags;			/* Trap exit, etc (no trace flags anymore) */
    Eterm fvalue;		/* Exit & Throw value (failure reason) */
    Uint freason;		/* Reason for detected failure */
    Eterm ftrace;		/* Latest exception stack trace dump */

    Process *next;		/* Pointer to next process in run queue */

    struct ErtsNodesMonitor_ *nodes_monitors;

    ErtsSuspendMonitor *suspend_monitors; /* Processes suspended by
					     this process via
					     erlang:suspend_process/1 */

    ErlMessageQueue msg;	/* Message queue */

    ErtsBifTimers *bif_timers;	/* Bif timers aiming at this process */
#ifdef ERTS_BTM_ACCESSOR_SUPPORT
    ErtsBifTimers *accessor_bif_timers;	/* Accessor bif timers */
#endif

    ProcDict  *dictionary;       /* Process dictionary, may be NULL */

    Uint seq_trace_clock;
    Uint seq_trace_lastcnt;
    Eterm seq_trace_token;	/* Sequential trace token (tuple size 5 see below) */

#ifdef USE_VM_PROBES
    Eterm dt_utag;              /* Place to store the dynamc trace user tag */
    Uint dt_utag_flags;         /* flag field for the dt_utag */
#endif
    union {
	void *terminate;
	BeamInstr initial[3];	/* Initial module(0), function(1), arity(2), often used instead
				   of pointer to funcinfo instruction, hence the BeamInstr datatype */
    } u;
    BeamInstr* current;		/* Current Erlang function, part of the funcinfo:
				 * module(0), function(1), arity(2)
				 * (module and functions are tagged atoms;
				 * arity an untagged integer). BeamInstr * because it references code
				 */
    
    /*
     * Information mainly for post-mortem use (erl crash dump).
     */
    Eterm parent;		/* Pid of process that created this process. */
    erts_approx_time_t approx_started; /* Time when started. */

    Uint32 static_flags;        /* Flags that do *not* change */

    /* This is the place, where all fields that differs between memory
     * architectures, have gone to.
     */

    Eterm *high_water;
    Eterm *old_hend;            /* Heap pointers for generational GC. */
    Eterm *old_htop;
    Eterm *old_heap;
    Uint max_heap_size;         /* Maximum size of heap (in words). */
    Uint16 gen_gcs;		/* Number of (minor) generational GCs. */
    Uint16 max_gen_gcs;		/* Max minor gen GCs before fullsweep. */
    ErlOffHeap off_heap;	/* Off-heap data updated by copy_struct(). */
    ErlHeapFragment* mbuf;	/* Pointer to heap fragment list */
    ErlHeapFragment* live_hf_end;
    ErtsMessage *msg_frag;	/* Pointer to message fragment list */
    Uint mbuf_sz;		/* Total size of heap fragments and message fragments */
    erts_smp_atomic_t psd;		/* Rarely used process specific data */

    Uint64 bin_vheap_sz;	/* Virtual heap block size for binaries */
    Uint64 bin_old_vheap_sz;	/* Virtual old heap block size for binaries */
    Uint64 bin_old_vheap;	/* Virtual old heap size for binaries */

    ErtsProcSysTaskQs *sys_task_qs;

    erts_smp_atomic32_t state;  /* Process state flags (see ERTS_PSFLG_*) */
#ifdef ERTS_DIRTY_SCHEDULERS
    erts_smp_atomic32_t dirty_state; /* Process dirty state flags (see ERTS_PDSFLG_*) */
#endif

#ifdef ERTS_SMP
    ErlMessageInQueue msg_inq;
    ErlTraceMessageQueue *trace_msg_q;
    ErtsPendExit pending_exit;
    erts_proc_lock_t lock;
    ErtsSchedulerData *scheduler_data;
    Eterm suspendee;
    ErtsPendingSuspend *pending_suspenders;
    erts_smp_atomic_t run_queue;
#ifdef HIPE
    struct hipe_process_state_smp hipe_smp;
#endif
#endif

#ifdef CHECK_FOR_HOLES
    Eterm* last_htop;		/* No need to scan the heap below this point. */
    ErlHeapFragment* last_mbuf;	/* No need to scan beyond this mbuf. */
    ErlHeapFragment* heap_hfrag; /* Heap abandoned, htop now lives in this frag */
#endif

#ifdef DEBUG
    Eterm* last_old_htop;	/*
				 * No need to scan the old heap below this point
				 * when looking for invalid pointers into the new heap or
				 * heap fragments.
				 */
#endif

#ifdef FORCE_HEAP_FRAGS
    Uint space_verified;        /* Avoid HAlloc forcing heap fragments when */ 
    Eterm* space_verified_from; /* we rely on available heap space (TestHeap) */
#endif

#ifdef DEBUG
    Uint debug_reds_in;
#endif
};

extern const Process erts_invalid_process;

#ifdef CHECK_FOR_HOLES
# define INIT_HOLE_CHECK(p)			\
do {						\
  (p)->last_htop = 0;				\
  (p)->last_mbuf = 0;				\
  (p)->heap_hfrag = NULL;			\
} while (0)

# define ERTS_HOLE_CHECK(p) erts_check_for_holes((p))
void erts_check_for_holes(Process* p);
#else
# define INIT_HOLE_CHECK(p)
# define ERTS_HOLE_CHECK(p)
#endif

/*
 * The MBUF_GC_FACTOR decides how easily a process is subject to GC 
 * due to message buffers allocated outside the heap.
 * The larger the factor, the easier the process gets GCed.
 * On a small memory system with lots of processes, this makes a significant 
 * difference, especially since the GCs help fragmentation quite a bit too.
 */
#if defined(SMALL_MEMORY)
#define MBUF_GC_FACTOR 4
#else
#define MBUF_GC_FACTOR 1
#endif

#define SEQ_TRACE_TOKEN(p)  ((p)->seq_trace_token)

#if ERTS_NO_PROC_PRIO_LEVELS > 4
#  error "Need to increase ERTS_PSFLG_PRIO_SHIFT"
#endif

#define ERTS_PSFLGS_PRIO_BITS 2
#define ERTS_PSFLGS_PRIO_MASK \
    ((((erts_aint32_t) 1) << ERTS_PSFLGS_PRIO_BITS) - 1)

#define ERTS_PSFLGS_ACT_PRIO_OFFSET (0*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_USR_PRIO_OFFSET (1*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_PRQ_PRIO_OFFSET (2*ERTS_PSFLGS_PRIO_BITS)
#define ERTS_PSFLGS_ZERO_BIT_OFFSET (3*ERTS_PSFLGS_PRIO_BITS)

#define ERTS_PSFLGS_QMASK_BITS 4
#define ERTS_PSFLGS_QMASK \
    ((((erts_aint32_t) 1) << ERTS_PSFLGS_QMASK_BITS) - 1)
#define ERTS_PSFLGS_IN_PRQ_MASK_OFFSET \
    ERTS_PSFLGS_ZERO_BIT_OFFSET

#define ERTS_PSFLG_BIT(N) \
    (((erts_aint32_t) 1) << (ERTS_PSFLGS_ZERO_BIT_OFFSET + (N)))

/*
 * ACT_PRIO -> Active prio, i.e., currently active prio. This
 *             prio may be higher than user prio.
 * USR_PRIO -> User prio. i.e., prio the user has set.
 * PRQ_PRIO -> Prio queue prio, i.e., prio queue currently
 *             enqueued in. 
 *
 * Update etp-proc-state-int in $ERL_TOP/erts/etc/unix/etp-commands.in
 * when changing ERTS_PSFLG_*.
 */
#define ERTS_PSFLGS_ACT_PRIO_MASK \
    (ERTS_PSFLGS_PRIO_MASK << ERTS_PSFLGS_ACT_PRIO_OFFSET)
#define ERTS_PSFLGS_USR_PRIO_MASK \
    (ERTS_PSFLGS_PRIO_MASK << ERTS_PSFLGS_USR_PRIO_OFFSET)
#define ERTS_PSFLGS_PRQ_PRIO_MASK \
    (ERTS_PSFLGS_PRIO_MASK << ERTS_PSFLGS_PRQ_PRIO_OFFSET)
#define ERTS_PSFLG_IN_PRQ_MAX 		ERTS_PSFLG_BIT(0)
#define ERTS_PSFLG_IN_PRQ_HIGH		ERTS_PSFLG_BIT(1)
#define ERTS_PSFLG_IN_PRQ_NORMAL	ERTS_PSFLG_BIT(2)
#define ERTS_PSFLG_IN_PRQ_LOW 		ERTS_PSFLG_BIT(3)
#define ERTS_PSFLG_FREE			ERTS_PSFLG_BIT(4)
#define ERTS_PSFLG_EXITING		ERTS_PSFLG_BIT(5)
#define ERTS_PSFLG_PENDING_EXIT		ERTS_PSFLG_BIT(6)
#define ERTS_PSFLG_ACTIVE		ERTS_PSFLG_BIT(7)
#define ERTS_PSFLG_IN_RUNQ		ERTS_PSFLG_BIT(8)
#define ERTS_PSFLG_RUNNING		ERTS_PSFLG_BIT(9)
#define ERTS_PSFLG_SUSPENDED		ERTS_PSFLG_BIT(10)
#define ERTS_PSFLG_GC			ERTS_PSFLG_BIT(11)
#define ERTS_PSFLG_BOUND		ERTS_PSFLG_BIT(12)
#define ERTS_PSFLG_TRAP_EXIT		ERTS_PSFLG_BIT(13)
#define ERTS_PSFLG_ACTIVE_SYS		ERTS_PSFLG_BIT(14)
#define ERTS_PSFLG_RUNNING_SYS		ERTS_PSFLG_BIT(15)
#define ERTS_PSFLG_PROXY		ERTS_PSFLG_BIT(16)
#define ERTS_PSFLG_DELAYED_SYS		ERTS_PSFLG_BIT(17)
#define ERTS_PSFLG_OFF_HEAP_MSGQ	ERTS_PSFLG_BIT(18)
#define ERTS_PSFLG_ON_HEAP_MSGQ		ERTS_PSFLG_BIT(19)
#define ERTS_PSFLG_DIRTY_CPU_PROC	ERTS_PSFLG_BIT(20)
#define ERTS_PSFLG_DIRTY_IO_PROC	ERTS_PSFLG_BIT(21)
#define ERTS_PSFLG_DIRTY_ACTIVE_SYS	ERTS_PSFLG_BIT(22)
#define ERTS_PSFLG_DIRTY_RUNNING	ERTS_PSFLG_BIT(23)
#define ERTS_PSFLG_DIRTY_RUNNING_SYS	ERTS_PSFLG_BIT(24)

#define ERTS_PSFLG_MAX  (ERTS_PSFLGS_ZERO_BIT_OFFSET + 24)

#define ERTS_PSFLGS_DIRTY_WORK		(ERTS_PSFLG_DIRTY_CPU_PROC	\
					 | ERTS_PSFLG_DIRTY_IO_PROC	\
					 | ERTS_PSFLG_DIRTY_ACTIVE_SYS)

#define ERTS_PSFLGS_IN_PRQ_MASK 	(ERTS_PSFLG_IN_PRQ_MAX		\
					 | ERTS_PSFLG_IN_PRQ_HIGH	\
					 | ERTS_PSFLG_IN_PRQ_NORMAL	\
					 | ERTS_PSFLG_IN_PRQ_LOW)

#define ERTS_PSFLGS_VOLATILE_HEAP	(ERTS_PSFLG_EXITING		\
					 | ERTS_PSFLG_PENDING_EXIT	\
					 | ERTS_PSFLG_DIRTY_RUNNING	\
					 | ERTS_PSFLG_DIRTY_RUNNING_SYS)

#define ERTS_PSFLGS_GET_ACT_PRIO(PSFLGS) \
    (((PSFLGS) >> ERTS_PSFLGS_ACT_PRIO_OFFSET) & ERTS_PSFLGS_PRIO_MASK)
#define ERTS_PSFLGS_GET_USR_PRIO(PSFLGS) \
    (((PSFLGS) >> ERTS_PSFLGS_USR_PRIO_OFFSET) & ERTS_PSFLGS_PRIO_MASK)
#define ERTS_PSFLGS_GET_PRQ_PRIO(PSFLGS) \
    (((PSFLGS) >> ERTS_PSFLGS_PRQ_PRIO_OFFSET) & ERTS_PSFLGS_PRIO_MASK)

#ifdef ERTS_DIRTY_SCHEDULERS

/*
 * Flags in the dirty_state field.
 */

#define ERTS_PDSFLG_IN_CPU_PRQ_MAX 	(((erts_aint32_t) 1) << 0)
#define ERTS_PDSFLG_IN_CPU_PRQ_HIGH	(((erts_aint32_t) 1) << 1)
#define ERTS_PDSFLG_IN_CPU_PRQ_NORMAL	(((erts_aint32_t) 1) << 2)
#define ERTS_PDSFLG_IN_CPU_PRQ_LOW 	(((erts_aint32_t) 1) << 3)
#define ERTS_PDSFLG_IN_IO_PRQ_MAX 	(((erts_aint32_t) 1) << 4)
#define ERTS_PDSFLG_IN_IO_PRQ_HIGH	(((erts_aint32_t) 1) << 5)
#define ERTS_PDSFLG_IN_IO_PRQ_NORMAL	(((erts_aint32_t) 1) << 6)
#define ERTS_PDSFLG_IN_IO_PRQ_LOW 	(((erts_aint32_t) 1) << 7)

#define ERTS_PDSFLGS_QMASK 		ERTS_PSFLGS_QMASK
#define ERTS_PDSFLGS_IN_CPU_PRQ_MASK_OFFSET 0
#define ERTS_PDSFLGS_IN_IO_PRQ_MASK_OFFSET ERTS_PSFLGS_QMASK_BITS

#define ERTS_PDSFLG_IN_CPU_PRQ_MASK 	(ERTS_PDSFLG_IN_CPU_PRQ_MAX	\
					 | ERTS_PDSFLG_IN_CPU_PRQ_HIGH	\
					 | ERTS_PDSFLG_IN_CPU_PRQ_NORMAL\
					 | ERTS_PDSFLG_IN_CPU_PRQ_LOW)
#define ERTS_PDSFLG_IN_IO_PRQ_MASK 	(ERTS_PDSFLG_IN_CPU_PRQ_MAX	\
					 | ERTS_PDSFLG_IN_CPU_PRQ_HIGH	\
					 | ERTS_PDSFLG_IN_CPU_PRQ_NORMAL\
					 | ERTS_PDSFLG_IN_CPU_PRQ_LOW)
#endif


/*
 * Static flags that do not change after process creation.
 */
#define ERTS_STC_FLG_SYSTEM_PROC	(((Uint32) 1) << 0)
#define ERTS_STC_FLG_SHADOW_PROC	(((Uint32) 1) << 1)

/* The sequential tracing token is a tuple of size 5:
 *
 *    {Flags, Label, Serial, Sender}
 */

#define SEQ_TRACE_TOKEN_ARITY(p)    (arityval(*(tuple_val(SEQ_TRACE_TOKEN(p)))))
#define SEQ_TRACE_TOKEN_FLAGS(p)    (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 1))
#define SEQ_TRACE_TOKEN_LABEL(p)    (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 2))
#define SEQ_TRACE_TOKEN_SERIAL(p)   (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 3))
#define SEQ_TRACE_TOKEN_SENDER(p)   (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 4))
#define SEQ_TRACE_TOKEN_LASTCNT(p)  (*(tuple_val(SEQ_TRACE_TOKEN(p)) + 5))

/* used when we have unit32 token */
#define SEQ_TRACE_T_ARITY(token)    (arityval(*(tuple_val(token))))
#define SEQ_TRACE_T_FLAGS(token)    (*(tuple_val(token) + 1))
#define SEQ_TRACE_T_LABEL(token)    (*(tuple_val(token) + 2))
#define SEQ_TRACE_T_SERIAL(token)   (*(tuple_val(token) + 3))
#define SEQ_TRACE_T_SENDER(token)   (*(tuple_val(token) + 4))
#define SEQ_TRACE_T_LASTCNT(token)  (*(tuple_val(token) + 5))

/*
 * Possible flags for the flags field in ErlSpawnOpts below.
 */

#define SPO_LINK 1
#define SPO_USE_ARGS 2
#define SPO_MONITOR 4
#define SPO_SYSTEM_PROC 8
#define SPO_OFF_HEAP_MSGQ 16
#define SPO_ON_HEAP_MSGQ 32

extern int erts_default_spo_flags;

/*
 * The following struct contains options for a process to be spawned.
 */
typedef struct {
    int flags;
    int error_code;		/* Error code returned from create_process(). */
    Eterm mref;			/* Monitor ref returned (if SPO_MONITOR was given). */

    /*
     * The following items are only initialized if the SPO_USE_ARGS flag is set.
     */
    Uint min_heap_size;		/* Minimum heap size (must be a valued returned
				 * from next_heap_size()).  */
    Uint min_vheap_size;	/* Minimum virtual heap size  */
    int priority;		/* Priority for process. */
    Uint16 max_gen_gcs;		/* Maximum number of gen GCs before fullsweep. */
    Uint max_heap_size;         /* Maximum heap size in words */
    Uint max_heap_flags;        /* Maximum heap flags (kill | log) */
    int scheduler;
} ErlSpawnOpts;

/*
 * The KILL_CATCHES(p) macro kills pending catches for process p.
 */

#define KILL_CATCHES(p) (p)->catches = -1

/* Shrink heap fragment from _last_ HAlloc.
*/
ERTS_GLB_INLINE void erts_heap_frag_shrink(Process* p, Eterm* hp);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void erts_heap_frag_shrink(Process* p, Eterm* hp)
{
    ErlHeapFragment* hf = MBUF(p);

    ASSERT(hf!=NULL && (hp - hf->mem < hf->alloc_size));

    hf->used_size = hp - hf->mem;
}	
#endif /* inline */

Eterm* erts_heap_alloc(Process* p, Uint need, Uint xtra);
#ifdef CHECK_FOR_HOLES
Eterm* erts_set_hole_marker(Eterm* ptr, Uint sz);
#endif

extern erts_smp_rwmtx_t erts_cpu_bind_rwmtx;
/* If any of the erts_system_monitor_* variables are set (enabled),
** erts_system_monitor must be != NIL, to allow testing on just
** the erts_system_monitor_* variables.
*/
extern Eterm erts_system_monitor;
extern Uint erts_system_monitor_long_gc;
extern Uint erts_system_monitor_long_schedule;
extern Uint erts_system_monitor_large_heap;
struct erts_system_monitor_flags_t {
	 unsigned int busy_port : 1;
    unsigned int busy_dist_port : 1;
};
extern struct erts_system_monitor_flags_t erts_system_monitor_flags;

/* system_profile, same rules as for system_monitor.
	erts_profile must be != NIL when 
	erts_profile_* is set. */

extern Eterm erts_system_profile;
struct erts_system_profile_flags_t {
    unsigned int scheduler : 1;
    unsigned int runnable_procs : 1;
    unsigned int runnable_ports : 1;
    unsigned int exclusive : 1;
};
extern struct erts_system_profile_flags_t erts_system_profile_flags;
extern int erts_system_profile_ts_type;

/* process flags */
#define F_HIBERNATE_SCHED    (1 <<  0) /* Schedule out after hibernate op */
#define F_INSLPQUEUE         (1 <<  1) /* Set if in timer queue */
#define F_TIMO               (1 <<  2) /* Set if timeout */
#define F_HEAP_GROW          (1 <<  3)
#define F_NEED_FULLSWEEP     (1 <<  4)
#define F_USING_DB           (1 <<  5) /* If have created tables */
#define F_DISTRIBUTION       (1 <<  6) /* Process used in distribution */
#define F_USING_DDLL         (1 <<  7) /* Process has used the DDLL interface */
#define F_HAVE_BLCKD_MSCHED  (1 <<  8) /* Process has blocked multi-scheduling */
#define F_P2PNR_RESCHED      (1 <<  9) /* Process has been rescheduled via erts_pid2proc_not_running() */
#define F_FORCE_GC           (1 << 10) /* Force gc at process in-scheduling */
#define F_DISABLE_GC         (1 << 11) /* Disable GC (see below) */
#define F_OFF_HEAP_MSGQ      (1 << 12) /* Off heap msg queue */
#define F_ON_HEAP_MSGQ       (1 << 13) /* Off heap msg queue */
#define F_OFF_HEAP_MSGQ_CHNG (1 << 14) /* Off heap msg queue changing */
#define F_ABANDONED_HEAP_USE (1 << 15) /* Have usage of abandoned heap */
#define F_DELAY_GC           (1 << 16) /* Similar to disable GC (see below) */
#define F_SCHDLR_ONLN_WAITQ  (1 << 17) /* Process enqueued waiting to change schedulers online */
#define F_HAVE_BLCKD_NMSCHED (1 << 18) /* Process has blocked normal multi-scheduling */
#define F_HIPE_MODE          (1 << 19)
#define F_DELAYED_DEL_PROC   (1 << 20) /* Delay delete process (dirty proc exit case) */

/*
 * F_DISABLE_GC and F_DELAY_GC are similar. Both will prevent
 * GC of the process, but it is important to use the right
 * one:
 * - F_DISABLE_GC should *only* be used by BIFs. This when
 *   the BIF needs to yield while preventig a GC.
 * - F_DELAY_GC should only be used when GC is temporarily
 *   disabled while the process is scheduled. A process must
 *   not be scheduled out while F_DELAY_GC is set.
 */

#define ERTS_TRACE_FLAGS_TS_TYPE_SHIFT			0

#define F_TRACE_FLAG(N)      (1 << (ERTS_TRACE_TS_TYPE_BITS + (N)))

/* process trace_flags */
#define F_NOW_TS             (ERTS_TRACE_FLG_NOW_TIMESTAMP \
			      << ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define F_STRICT_MON_TS      (ERTS_TRACE_FLG_STRICT_MONOTONIC_TIMESTAMP \
			      << ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define F_MON_TS             (ERTS_TRACE_FLG_MONOTONIC_TIMESTAMP \
			      << ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)
#define F_SENSITIVE          F_TRACE_FLAG(0)
#define F_TRACE_SEND         F_TRACE_FLAG(1)
#define F_TRACE_RECEIVE      F_TRACE_FLAG(2)
#define F_TRACE_SOS          F_TRACE_FLAG(3) /* Set on spawn       */
#define F_TRACE_SOS1         F_TRACE_FLAG(4) /* Set on first spawn */
#define F_TRACE_SOL          F_TRACE_FLAG(5) /* Set on link        */
#define F_TRACE_SOL1         F_TRACE_FLAG(6) /* Set on first link  */
#define F_TRACE_CALLS        F_TRACE_FLAG(7)
#define F_TRACE_PROCS        F_TRACE_FLAG(8)
#define F_TRACE_FIRST_CHILD  F_TRACE_FLAG(9)
#define F_TRACE_SCHED        F_TRACE_FLAG(10)
#define F_TRACE_GC           F_TRACE_FLAG(11)
#define F_TRACE_ARITY_ONLY   F_TRACE_FLAG(12)
#define F_TRACE_RETURN_TO    F_TRACE_FLAG(13) /* Return_to trace when breakpoint tracing */
#define F_TRACE_SILENT       F_TRACE_FLAG(14) /* No call trace msg suppress */
#define F_EXCEPTION_TRACE    F_TRACE_FLAG(15) /* May have exception trace on stack */

/* port trace flags, currently the same as process trace flags */
#define F_TRACE_SCHED_PORTS  F_TRACE_FLAG(17) /* Trace of port scheduling */
#define F_TRACE_SCHED_PROCS  F_TRACE_FLAG(18) /* With virtual scheduling */
#define F_TRACE_PORTS	     F_TRACE_FLAG(19) /* Ports equivalent to F_TRACE_PROCS */
#define F_TRACE_SCHED_NO     F_TRACE_FLAG(20) /* Trace with scheduler id */
#define F_TRACE_SCHED_EXIT   F_TRACE_FLAG(21)

#define F_NUM_FLAGS          (ERTS_TRACE_TS_TYPE_BITS + 22)
#ifdef DEBUG
#  define F_INITIAL_TRACE_FLAGS (5 << F_NUM_FLAGS)
#else
#  define F_INITIAL_TRACE_FLAGS 0
#endif

/* F_TIMESTAMP_MASK is a bit-field of all all timestamp types */
#define F_TIMESTAMP_MASK \
    (ERTS_TRACE_TS_TYPE_MASK << ERTS_TRACE_FLAGS_TS_TYPE_SHIFT)

#define TRACEE_FLAGS ( F_TRACE_PROCS | F_TRACE_CALLS \
		     | F_TRACE_SOS |  F_TRACE_SOS1| F_TRACE_RECEIVE  \
		     | F_TRACE_SOL | F_TRACE_SOL1 | F_TRACE_SEND \
		     | F_TRACE_SCHED | F_TIMESTAMP_MASK | F_TRACE_GC \
		     | F_TRACE_ARITY_ONLY | F_TRACE_RETURN_TO \
                     | F_TRACE_SILENT | F_TRACE_SCHED_PROCS | F_TRACE_PORTS \
		     | F_TRACE_SCHED_PORTS | F_TRACE_SCHED_NO \
		     | F_TRACE_SCHED_EXIT)


#define ERTS_TRACEE_MODIFIER_FLAGS \
    (F_TRACE_SILENT | F_TIMESTAMP_MASK | F_TRACE_SCHED_NO \
     | F_TRACE_RECEIVE | F_TRACE_SEND)
#define ERTS_PORT_TRACEE_FLAGS                                     \
    (ERTS_TRACEE_MODIFIER_FLAGS | F_TRACE_PORTS | F_TRACE_SCHED_PORTS)
#define ERTS_PROC_TRACEE_FLAGS \
    ((TRACEE_FLAGS & ~ERTS_PORT_TRACEE_FLAGS) | ERTS_TRACEE_MODIFIER_FLAGS)

#define SEQ_TRACE_FLAG(N)        (1 << (ERTS_TRACE_TS_TYPE_BITS + (N)))

/* Sequential trace flags */

/* SEQ_TRACE_TIMESTAMP_MASK is a bit-field */
#define SEQ_TRACE_TIMESTAMP_MASK \
    (ERTS_TRACE_TS_TYPE_MASK << ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)

#define SEQ_TRACE_SEND     (1 << 0)
#define SEQ_TRACE_RECEIVE  (1 << 1)
#define SEQ_TRACE_PRINT    (1 << 2)

#define ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT 3

#define SEQ_TRACE_NOW_TS   (ERTS_TRACE_FLG_NOW_TIMESTAMP \
			    << ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)
#define SEQ_TRACE_STRICT_MON_TS (ERTS_TRACE_FLG_STRICT_MONOTONIC_TIMESTAMP \
				 << ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)
#define SEQ_TRACE_MON_TS (ERTS_TRACE_FLG_MONOTONIC_TIMESTAMP \
			  << ERTS_SEQ_TRACE_FLAGS_TS_TYPE_SHIFT)

#ifdef USE_VM_PROBES
#define DT_UTAG_PERMANENT (1 << 0)
#define DT_UTAG_SPREADING (1 << 1)
#define DT_UTAG(P) ((P)->dt_utag)
#define DT_UTAG_FLAGS(P)  ((P)->dt_utag_flags) 
#endif

/* Option flags to erts_send_exit_signal() */
#define ERTS_XSIG_FLG_IGN_KILL		(((Uint32) 1) << 0)
#define ERTS_XSIG_FLG_NO_IGN_NORMAL	(((Uint32) 1) << 1)

#define CANCEL_TIMER(P)					\
    do {						\
	if ((P)->flags & (F_INSLPQUEUE|F_TIMO)) {	\
	    if ((P)->flags & F_INSLPQUEUE)		\
		erts_cancel_proc_timer((P));		\
	    else					\
		(P)->flags &= ~F_TIMO;			\
	}						\
    } while (0)

#if defined(ERTS_DIRTY_SCHEDULERS) && defined(ERTS_SMP)
#define ERTS_NUM_DIRTY_RUNQS 2
#else
#define ERTS_NUM_DIRTY_RUNQS 0
#endif

#define ERTS_RUNQ_IX(IX)						\
  (ASSERT(0 <= (IX) && (IX) < erts_no_run_queues),			\
   &erts_aligned_run_queues[(IX)].runq)
#ifdef ERTS_DIRTY_SCHEDULERS
#define ERTS_RUNQ_IX_IS_DIRTY(IX)					\
  (-(ERTS_NUM_DIRTY_RUNQS) <= (IX) && (IX) < 0)
#define ERTS_DIRTY_RUNQ_IX(IX)						\
  (ASSERT(ERTS_RUNQ_IX_IS_DIRTY(IX)),					\
   &erts_aligned_run_queues[(IX)].runq)
#define ERTS_DIRTY_CPU_RUNQ (&erts_aligned_run_queues[-1].runq)
#define ERTS_DIRTY_IO_RUNQ  (&erts_aligned_run_queues[-2].runq)
#define ERTS_RUNQ_IS_DIRTY_CPU_RUNQ(RQ) ((RQ)->ix == -1)
#define ERTS_RUNQ_IS_DIRTY_IO_RUNQ(RQ) ((RQ)->ix == -2)
#else
#define ERTS_RUNQ_IX_IS_DIRTY(IX) 0
#endif
#define ERTS_SCHEDULER_IX(IX)						\
  (ASSERT(0 <= (IX) && (IX) < erts_no_schedulers),			\
   &erts_aligned_scheduler_data[(IX)].esd)
#ifdef ERTS_DIRTY_SCHEDULERS
#define ERTS_DIRTY_CPU_SCHEDULER_IX(IX)					\
  (ASSERT(0 <= (IX) && (IX) < erts_no_dirty_cpu_schedulers),		\
   &erts_aligned_dirty_cpu_scheduler_data[(IX)].esd)
#define ERTS_DIRTY_IO_SCHEDULER_IX(IX)					\
  (ASSERT(0 <= (IX) && (IX) < erts_no_dirty_io_schedulers),		\
   &erts_aligned_dirty_io_scheduler_data[(IX)].esd)
#define ERTS_DIRTY_SCHEDULER_NO(ESDP)					\
  ((ESDP)->dirty_no.s.num)
#define ERTS_DIRTY_SCHEDULER_TYPE(ESDP)					\
  ((ESDP)->dirty_no.s.type)
#ifdef ERTS_SMP
#define ERTS_SCHEDULER_IS_DIRTY(ESDP)					\
  ((ESDP)->dirty_no.s.num != 0)
#define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP)				\
    ((ESDP)->dirty_no.s.type == 0)
#define ERTS_SCHEDULER_IS_DIRTY_IO(ESDP)				\
    ((ESDP)->dirty_no.s.type == 1)
#else
#define ERTS_SCHEDULER_IS_DIRTY(ESDP) 0
#define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP) 0
#define ERTS_SCHEDULER_IS_DIRTY_IO(ESDP) 0
#endif
#else
#define ERTS_RUNQ_IX_IS_DIRTY(IX) 0
#define ERTS_SCHEDULER_IS_DIRTY(ESDP) 0
#define ERTS_SCHEDULER_IS_DIRTY_CPU(ESDP) 0
#define ERTS_SCHEDULER_IS_DIRTY_IO(ESDP) 0
#endif

void erts_pre_init_process(void);
void erts_late_init_process(void);
void erts_early_init_scheduling(int);
void erts_init_scheduling(int, int
#ifdef ERTS_DIRTY_SCHEDULERS
			  , int, int, int
#endif
			  );

int erts_set_gc_state(Process *c_p, int enable);
Eterm erts_sched_wall_time_request(Process *c_p, int set, int enable);
Eterm erts_system_check_request(Process *c_p);
Eterm erts_gc_info_request(Process *c_p);
Uint64 erts_get_proc_interval(void);
Uint64 erts_ensure_later_proc_interval(Uint64);
Uint64 erts_step_proc_interval(void);

int erts_setup_nif_gc(Process* proc, Eterm** objv, int* nobj); /* see erl_nif.c */
void erts_destroy_nif_export(void *); /* see erl_nif.c */

ErtsProcList *erts_proclist_create(Process *);
ErtsProcList *erts_proclist_copy(ErtsProcList *);
void erts_proclist_destroy(ErtsProcList *);

ERTS_GLB_INLINE int erts_proclist_same(ErtsProcList *, Process *);
ERTS_GLB_INLINE void erts_proclist_store_first(ErtsProcList **, ErtsProcList *);
ERTS_GLB_INLINE void erts_proclist_store_last(ErtsProcList **, ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_first(ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_last(ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_next(ErtsProcList *, ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_prev(ErtsProcList *, ErtsProcList *);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_first(ErtsProcList **);
ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_last(ErtsProcList **);
ERTS_GLB_INLINE int erts_proclist_fetch(ErtsProcList **, ErtsProcList **);
ERTS_GLB_INLINE void erts_proclist_remove(ErtsProcList **, ErtsProcList *);
ERTS_GLB_INLINE int erts_proclist_is_empty(ErtsProcList *);
ERTS_GLB_INLINE int erts_proclist_is_first(ErtsProcList *, ErtsProcList *);
ERTS_GLB_INLINE int erts_proclist_is_last(ErtsProcList *, ErtsProcList *);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE int
erts_proclist_same(ErtsProcList *plp, Process *p)
{
    return (plp->pid == p->common.id
	    && (plp->started_interval
		== p->common.u.alive.started_interval));
}

ERTS_GLB_INLINE void erts_proclist_store_first(ErtsProcList **list,
					       ErtsProcList *element)
{
    if (!*list)
	element->next = element->prev = element;
    else {
	element->prev = (*list)->prev;
	element->next = *list;
	element->prev->next = element;
	element->next->prev = element;
    }
    *list = element;
}

ERTS_GLB_INLINE void erts_proclist_store_last(ErtsProcList **list,
					      ErtsProcList *element)
{
    if (!*list) {
	element->next = element->prev = element;
	*list = element;
    }
    else {
	element->prev = (*list)->prev;
	element->next = *list;
	element->prev->next = element;
	element->next->prev = element;
    }
}

ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_first(ErtsProcList *list)
{
    return list;
}

ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_last(ErtsProcList *list)
{
    if (!list)
	return NULL;
    else
	return list->prev;
}

ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_next(ErtsProcList *list,
						      ErtsProcList *element)
{
    ErtsProcList *next;
    ASSERT(list && element);
    next = element->next;
    return list == next ? NULL : next;
}

ERTS_GLB_INLINE ErtsProcList *erts_proclist_peek_prev(ErtsProcList *list,
						      ErtsProcList *element)
{
    ErtsProcList *prev;
    ASSERT(list && element);
    prev = element->prev;
    return list == element ? NULL : prev;
}

ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_first(ErtsProcList **list)
{
    if (!*list)
	return NULL;
    else {
	ErtsProcList *res = *list;
	if (res == *list)
	    *list = NULL;
	else
	    *list = res->next;
	res->next->prev = res->prev;
	res->prev->next = res->next;
	return res;
    }
}

ERTS_GLB_INLINE ErtsProcList *erts_proclist_fetch_last(ErtsProcList **list)
{
    if (!*list)
	return NULL;
    else {
	ErtsProcList *res = (*list)->prev;
	if (res == *list)
	    *list = NULL;
	res->next->prev = res->prev;
	res->prev->next = res->next;
	return res;
    }
}

ERTS_GLB_INLINE int erts_proclist_fetch(ErtsProcList **list_first,
					ErtsProcList **list_last)
{
    if (!*list_first) {
	if (list_last)
	    *list_last = NULL;
	return 0;
    }
    else {
	if (list_last)
	    *list_last = (*list_first)->prev;
	(*list_first)->prev->next = NULL;
	(*list_first)->prev = NULL;
	return !0;
    }
}

ERTS_GLB_INLINE void erts_proclist_remove(ErtsProcList **list,
					  ErtsProcList *element)
{
    ASSERT(list && *list);
    if (*list == element) {
	*list = element->next;
	if (*list == element)
	    *list = NULL;
    }
    element->next->prev = element->prev;
    element->prev->next = element->next;
}

ERTS_GLB_INLINE int erts_proclist_is_empty(ErtsProcList *list)
{
    return list == NULL;
}

ERTS_GLB_INLINE int erts_proclist_is_first(ErtsProcList *list,
					   ErtsProcList *element)
{
    ASSERT(list && element);
    return list == element;
}

ERTS_GLB_INLINE int erts_proclist_is_last(ErtsProcList *list,
					  ErtsProcList *element)
{
    ASSERT(list && element);
    return list->prev == element;
}

#endif

int erts_sched_set_wakeup_other_thresold(char *str);
int erts_sched_set_wakeup_other_type(char *str);
int erts_sched_set_busy_wait_threshold(char *str);
int erts_sched_set_wake_cleanup_threshold(char *);

void erts_schedule_thr_prgr_later_op(void (*)(void *),
				     void *,
				     ErtsThrPrgrLaterOp *);
void erts_schedule_thr_prgr_later_cleanup_op(void (*)(void *),
					     void *,
					     ErtsThrPrgrLaterOp *,
					     UWord);
void erts_schedule_complete_off_heap_message_queue_change(Eterm pid);
void erts_schedule_flush_trace_messages(Eterm pid);
int erts_flush_trace_messages(Process *c_p, ErtsProcLocks locks);

#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK)
int erts_dbg_check_halloc_lock(Process *p);
#endif
#if defined(ERTS_SMP) || defined(ERTS_DIRTY_SCHEDULERS)
void
erts_schedulers_state(Uint *, Uint *, Uint *, Uint *, Uint *, Uint *, Uint *, Uint *);
#endif
#ifdef ERTS_SMP
ErtsSchedSuspendResult
erts_set_schedulers_online(Process *p,
			   ErtsProcLocks plocks,
			   Sint new_no,
			   Sint *old_no,
			   int dirty_only);
ErtsSchedSuspendResult
erts_block_multi_scheduling(Process *, ErtsProcLocks, int, int, int);
int erts_is_multi_scheduling_blocked(void);
Eterm erts_multi_scheduling_blockers(Process *, int);
void erts_start_schedulers(void);
void erts_alloc_notify_delayed_dealloc(int);
void erts_alloc_ensure_handle_delayed_dealloc_call(int);
void erts_notify_canceled_timer(ErtsSchedulerData *, int);
#endif
#if ERTS_USE_ASYNC_READY_Q
void erts_notify_check_async_ready_queue(void *);
#endif
#ifdef ERTS_SMP
void erts_notify_code_ix_activation(Process* p, ErtsThrPrgrVal later);
void erts_notify_finish_breakpointing(Process* p);
#endif
void erts_schedule_misc_aux_work(int sched_id,
				 void (*func)(void *),
				 void *arg);
void erts_schedule_multi_misc_aux_work(int ignore_self,
				       int max_sched,
				       void (*func)(void *),
				       void *arg);
erts_aint32_t erts_set_aux_work_timeout(int, erts_aint32_t, int);
void erts_sched_notify_check_cpu_bind(void);
Uint erts_active_schedulers(void);
void erts_init_process(int, int, int);
Eterm erts_process_state2status(erts_aint32_t);
Eterm erts_process_status(Process *, Eterm);
Uint erts_run_queues_len(Uint *, int, int);
void erts_add_to_runq(Process *);
Eterm erts_bound_schedulers_term(Process *c_p);
Eterm erts_get_cpu_topology_term(Process *c_p, Eterm which);
Eterm erts_get_schedulers_binds(Process *c_p);
Eterm erts_set_cpu_topology(Process *c_p, Eterm term);
Eterm erts_bind_schedulers(Process *c_p, Eterm how);
ErtsRunQueue *erts_schedid2runq(Uint);
Process *erts_schedule(ErtsSchedulerData *, Process*, int);
void erts_schedule_misc_op(void (*)(void *), void *);
Eterm erl_create_process(Process*, Eterm, Eterm, Eterm, ErlSpawnOpts*);
void erts_do_exit_process(Process*, Eterm);
void erts_continue_exit_process(Process *);
/* Begin System profile */
Uint erts_runnable_process_count(void);
/* End System profile */
void erts_init_empty_process(Process *p);
void erts_cleanup_empty_process(Process* p);
#ifdef DEBUG
void erts_debug_verify_clean_empty_process(Process* p);
#endif
void erts_stack_dump(int to, void *to_arg, Process *);
void erts_limited_stack_trace(int to, void *to_arg, Process *);
void erts_program_counter_info(int to, void *to_arg, Process *);
void erts_print_scheduler_info(int to, void *to_arg, ErtsSchedulerData *esdp);
void erts_dump_extended_process_state(int to, void *to_arg, erts_aint32_t psflg);
void erts_dump_process_state(int to, void *to_arg, erts_aint32_t psflg);

Eterm erts_get_process_priority(Process *p);
Eterm erts_set_process_priority(Process *p, Eterm prio);

Uint erts_get_total_context_switches(void);
void erts_get_total_reductions(Uint *, Uint *);
void erts_get_exact_total_reductions(Process *, Uint *, Uint *);

Eterm erts_fake_scheduler_bindings(Process *p, Eterm how);

void erts_sched_stat_modify(int what);
Eterm erts_sched_stat_term(Process *p, int total);

void erts_free_proc(Process *);

void erts_suspend(Process*, ErtsProcLocks, Port*);
void erts_resume(Process*, ErtsProcLocks);
int erts_resume_processes(ErtsProcList *);

int erts_send_exit_signal(Process *,
			  Eterm,
			  Process *,
			  ErtsProcLocks *,
			  Eterm,
			  Eterm,
			  Process *,
			  Uint32);
#ifdef ERTS_SMP
void erts_handle_pending_exit(Process *, ErtsProcLocks);
#define ERTS_PROC_PENDING_EXIT(P) \
    (ERTS_PSFLG_PENDING_EXIT & erts_smp_atomic32_read_acqb(&(P)->state))
#else
#define ERTS_PROC_PENDING_EXIT(P) 0
#endif

void erts_deep_process_dump(int, void *);

Eterm erts_get_reader_groups_map(Process *c_p);
Eterm erts_debug_reader_groups_map(Process *c_p, int groups);

Uint erts_debug_nbalance(void);

#define ERTS_DEBUG_WAIT_COMPLETED_DEALLOCATIONS		(1 << 0)
#define ERTS_DEBUG_WAIT_COMPLETED_TIMER_CANCELLATIONS	(1 << 1)

int erts_debug_wait_completed(Process *c_p, int flags);

Uint erts_process_memory(Process *c_p, int incl_msg_inq);

#ifdef ERTS_DO_VERIFY_UNUSED_TEMP_ALLOC
#  define ERTS_VERIFY_UNUSED_TEMP_ALLOC(P)					\
do {										\
    ErtsSchedulerData *esdp__ = ((P)						\
				 ? erts_proc_sched_data((Process *) (P))	\
				 : erts_get_scheduler_data());			\
    if (esdp__ && !ERTS_SCHEDULER_IS_DIRTY(esdp__))				\
	esdp__->verify_unused_temp_alloc(					\
	    esdp__->verify_unused_temp_alloc_data);				\
} while (0)
#else
#  define ERTS_VERIFY_UNUSED_TEMP_ALLOC(ESDP)
#endif

#if defined(ERTS_SMP) || defined(USE_THREADS)
ErtsSchedulerData *erts_get_scheduler_data(void);
#else
ERTS_GLB_INLINE ErtsSchedulerData *erts_get_scheduler_data(void);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE
ErtsSchedulerData *erts_get_scheduler_data(void)
{
    return erts_scheduler_data;
}
#endif
#endif

void erts_schedule_process(Process *, erts_aint32_t, ErtsProcLocks);

ERTS_GLB_INLINE void erts_proc_notify_new_message(Process *p, ErtsProcLocks locks);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE void
erts_proc_notify_new_message(Process *p, ErtsProcLocks locks)
{
    /* No barrier needed, due to msg lock */
    erts_aint32_t state = erts_smp_atomic32_read_nob(&p->state);
    if (!(state & ERTS_PSFLG_ACTIVE))
	erts_schedule_process(p, state, locks);
}
#endif

#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK)

#define ERTS_PROCESS_LOCK_ONLY_LOCK_CHECK_PROTO__
#include "erl_process_lock.h"
#undef ERTS_PROCESS_LOCK_ONLY_LOCK_CHECK_PROTO__

#define ERTS_SMP_LC_CHK_RUNQ_LOCK(RQ, L)				\
do {									\
    if ((L))								\
	ERTS_SMP_LC_ASSERT(erts_smp_lc_runq_is_locked((RQ)));		\
    else								\
	ERTS_SMP_LC_ASSERT(!erts_smp_lc_runq_is_locked((RQ)));		\
} while (0)
#else
#define ERTS_SMP_LC_CHK_RUNQ_LOCK(RQ, L)
#endif

void *erts_psd_set_init(Process *p, int ix, void *data);

ERTS_GLB_INLINE void *
erts_psd_get(Process *p, int ix);
ERTS_GLB_INLINE void *
erts_psd_set(Process *p, int ix, void *new);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE void *
erts_psd_get(Process *p, int ix)
{
    ErtsPSD *psd;
#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK)
    ErtsProcLocks locks = erts_proc_lc_my_proc_locks(p);
    if (ERTS_LC_PSD_ANY_LOCK == erts_psd_required_locks[ix].get_locks)
	ERTS_SMP_LC_ASSERT(locks || erts_thr_progress_is_blocking());
    else {
	locks &= erts_psd_required_locks[ix].get_locks;
	ERTS_SMP_LC_ASSERT(erts_psd_required_locks[ix].get_locks == locks
			   || erts_thr_progress_is_blocking());
    }
#endif

    psd = (ErtsPSD *) erts_smp_atomic_read_nob(&p->psd);
    ASSERT(0 <= ix && ix < ERTS_PSD_SIZE);
    if (!psd)
	return NULL;
    ERTS_SMP_DATA_DEPENDENCY_READ_MEMORY_BARRIER;
    return psd->data[ix];
}

ERTS_GLB_INLINE void *
erts_psd_set(Process *p, int ix, void *data)
{
    ErtsPSD *psd;
#if defined(ERTS_SMP) && defined(ERTS_ENABLE_LOCK_CHECK)
    ErtsProcLocks locks = erts_proc_lc_my_proc_locks(p);
    erts_aint32_t state = state = erts_smp_atomic32_read_nob(&p->state);
    if (!(state & ERTS_PSFLG_FREE)) {
	if (ERTS_LC_PSD_ANY_LOCK == erts_psd_required_locks[ix].set_locks)
	    ERTS_SMP_LC_ASSERT(locks || erts_thr_progress_is_blocking());
	else {
	    locks &= erts_psd_required_locks[ix].set_locks;
	    ERTS_SMP_LC_ASSERT(erts_psd_required_locks[ix].set_locks == locks
			       || erts_thr_progress_is_blocking());
	}
    }
#endif
    psd = (ErtsPSD *) erts_smp_atomic_read_nob(&p->psd);
    ASSERT(0 <= ix && ix < ERTS_PSD_SIZE);
    if (psd) {
	void *old;
#ifdef ERTS_SMP
#ifdef ETHR_ORDERED_READ_DEPEND
	ETHR_MEMBAR(ETHR_LoadStore|ETHR_StoreStore);
#else
	ETHR_MEMBAR(ETHR_LoadLoad|ETHR_LoadStore|ETHR_StoreStore);
#endif
#endif
	old = psd->data[ix];
	psd->data[ix] = data;
	return old;
    }

    if (!data)
	return NULL;

    return erts_psd_set_init(p, ix, data);
}

#endif

#define ERTS_PROC_SCHED_ID(P, ID) \
  ((UWord) erts_psd_set((P), ERTS_PSD_SCHED_ID, (void *) (ID)))

#define ERTS_PROC_GET_SAVED_CALLS_BUF(P) \
  ((struct saved_calls *) erts_psd_get((P), ERTS_PSD_SAVED_CALLS_BUF))
#define ERTS_PROC_SET_SAVED_CALLS_BUF(P, SCB) \
  ((struct saved_calls *) erts_psd_set((P), ERTS_PSD_SAVED_CALLS_BUF, (void *) (SCB)))

#define ERTS_PROC_GET_CALL_TIME(P) \
  ((process_breakpoint_time_t *) erts_psd_get((P), ERTS_PSD_CALL_TIME_BP))
#define ERTS_PROC_SET_CALL_TIME(P, PBT) \
  ((process_breakpoint_time_t *) erts_psd_set((P), ERTS_PSD_CALL_TIME_BP, (void *) (PBT)))

#define ERTS_PROC_GET_DELAYED_GC_TASK_QS(P) \
    ((ErtsProcSysTaskQs *) erts_psd_get((P), ERTS_PSD_DELAYED_GC_TASK_QS))
#define ERTS_PROC_SET_DELAYED_GC_TASK_QS(P, PBT) \
    ((ErtsProcSysTaskQs *) erts_psd_set((P), ERTS_PSD_DELAYED_GC_TASK_QS, (void *) (PBT)))

#define ERTS_PROC_GET_NIF_TRAP_EXPORT(P) \
    erts_psd_get((P), ERTS_PSD_NIF_TRAP_EXPORT)
#define ERTS_PROC_SET_NIF_TRAP_EXPORT(P, NTE) \
    erts_psd_set((P), ERTS_PSD_NIF_TRAP_EXPORT, (void *) (NTE))

#ifdef HIPE
#define ERTS_PROC_GET_SUSPENDED_SAVED_CALLS_BUF(P) \
  ((struct saved_calls *) erts_psd_get((P), ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF))
#define ERTS_PROC_SET_SUSPENDED_SAVED_CALLS_BUF(P, SCB) \
  ((struct saved_calls *) erts_psd_set((P), ERTS_PSD_SUSPENDED_SAVED_CALLS_BUF, (void *) (SCB)))
#endif

ERTS_GLB_INLINE Eterm erts_proc_get_error_handler(Process *p);
ERTS_GLB_INLINE Eterm erts_proc_set_error_handler(Process *p, Eterm handler);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE Eterm
erts_proc_get_error_handler(Process *p)
{
    void *val = erts_psd_get(p, ERTS_PSD_ERROR_HANDLER);
    if (!val)
	return am_error_handler;
    else {
	ASSERT(is_atom(((Eterm) (UWord) val)));
	return (Eterm) (UWord) val;
    }
}

ERTS_GLB_INLINE Eterm
erts_proc_set_error_handler(Process *p, Eterm handler)
{
    void *old_val;
    void *new_val;
    ASSERT(is_atom(handler));
    new_val = (handler == am_error_handler) ? NULL : (void *) (UWord) handler;
    old_val = erts_psd_set(p, ERTS_PSD_ERROR_HANDLER, new_val);
    if (!old_val)
	return am_error_handler;
    else {
	ASSERT(is_atom(((Eterm) (UWord) old_val)));
	return (Eterm) (UWord) old_val;
    }
}

#endif

#ifdef ERTS_INCLUDE_SCHEDULER_INTERNALS

#ifdef ERTS_SMP

#include "erl_thr_progress.h"

extern erts_atomic_t erts_migration_paths;

#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
int erts_get_sched_util(ErtsRunQueue *rq,
			int initially_locked,
			int short_interval);
#endif


ERTS_GLB_INLINE ErtsMigrationPaths *erts_get_migration_paths_managed(void);
ERTS_GLB_INLINE ErtsMigrationPaths *erts_get_migration_paths(void);
ERTS_GLB_INLINE ErtsRunQueue *erts_check_emigration_need(ErtsRunQueue *c_rq,
							 int prio);
#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE ErtsMigrationPaths *
erts_get_migration_paths_managed(void)
{
    return (ErtsMigrationPaths *) erts_atomic_read_ddrb(&erts_migration_paths);
}

ERTS_GLB_INLINE ErtsMigrationPaths *
erts_get_migration_paths(void)
{
    if (erts_thr_progress_is_managed_thread())
	return erts_get_migration_paths_managed();
    else
	return NULL;
}

ERTS_GLB_INLINE ErtsRunQueue *
erts_check_emigration_need(ErtsRunQueue *c_rq, int prio)
{
    ErtsMigrationPaths *mps = erts_get_migration_paths();
    ErtsMigrationPath *mp;
    Uint32 flags;

    if (!mps)
	return NULL;

    mp = &mps->mpath[c_rq->ix];
    flags = mp->flags;

    if (ERTS_CHK_RUNQ_FLG_EMIGRATE(flags, prio)) {
	int len;

	if (ERTS_CHK_RUNQ_FLG_EVACUATE(flags, prio)) {
	    /* force emigration */
	    return mp->prio[prio].runq;
	}

	if (flags & ERTS_RUNQ_FLG_INACTIVE) {
	    /*
	     * Run queue was inactive at last balance. Verify that
	     * it still is before forcing emigration.
	     */
	    if (ERTS_RUNQ_FLGS_GET(c_rq) & ERTS_RUNQ_FLG_INACTIVE)
		return mp->prio[prio].runq;
	}

#if ERTS_HAVE_SCHED_UTIL_BALANCING_SUPPORT
	if (mp->sched_util) {
	    ErtsRunQueue *rq = mp->prio[prio].runq;
	    /* No migration if other is non-empty */
	    if (!(ERTS_RUNQ_FLGS_GET(rq) & ERTS_RUNQ_FLG_NONEMPTY)
		&& erts_get_sched_util(rq, 0, 1) < mp->prio[prio].limit.other
		&& erts_get_sched_util(c_rq, 0, 1) > mp->prio[prio].limit.this) {
		return rq;
	    }
	}
	else
#endif
	{

	    if (prio == ERTS_PORT_PRIO_LEVEL)
		len = RUNQ_READ_LEN(&c_rq->ports.info.len);
	    else
		len = RUNQ_READ_LEN(&c_rq->procs.prio_info[prio].len);

	    if (len > mp->prio[prio].limit.this) {
		ErtsRunQueue *n_rq = mp->prio[prio].runq;
		if (n_rq) {
		    if (prio == ERTS_PORT_PRIO_LEVEL)
			len = RUNQ_READ_LEN(&n_rq->ports.info.len);
		    else
			len = RUNQ_READ_LEN(&n_rq->procs.prio_info[prio].len);

		    if (len < mp->prio[prio].limit.other)
			return n_rq;
		}
	    }
	}
    }
    return NULL;
}

#endif

#endif

#endif

ERTS_GLB_INLINE ErtsSchedulerData *erts_proc_sched_data(Process *c_p);
ERTS_GLB_INLINE int erts_is_scheduler_bound(ErtsSchedulerData *esdp);
ERTS_GLB_INLINE Process *erts_get_current_process(void);
ERTS_GLB_INLINE Eterm erts_get_current_pid(void);
ERTS_GLB_INLINE Uint erts_get_scheduler_id(void);
ERTS_GLB_INLINE ErtsRunQueue *erts_get_runq_proc(Process *p);
ERTS_GLB_INLINE ErtsRunQueue *erts_get_runq_current(ErtsSchedulerData *esdp);
ERTS_GLB_INLINE void erts_smp_runq_lock(ErtsRunQueue *rq);
ERTS_GLB_INLINE int erts_smp_runq_trylock(ErtsRunQueue *rq);
ERTS_GLB_INLINE void erts_smp_runq_unlock(ErtsRunQueue *rq);
ERTS_GLB_INLINE void erts_smp_xrunq_lock(ErtsRunQueue *rq, ErtsRunQueue *xrq);
ERTS_GLB_INLINE void erts_smp_xrunq_unlock(ErtsRunQueue *rq, ErtsRunQueue *xrq);
ERTS_GLB_INLINE void erts_smp_runqs_lock(ErtsRunQueue *rq1, ErtsRunQueue *rq2);
ERTS_GLB_INLINE void erts_smp_runqs_unlock(ErtsRunQueue *rq1, ErtsRunQueue *rq2);

ERTS_GLB_INLINE ErtsMessage *erts_alloc_message_heap_state(Process *pp,
							   erts_aint32_t *psp,
							   ErtsProcLocks *plp,
							   Uint sz,
							   Eterm **hpp,
							   ErlOffHeap **ohpp);
ERTS_GLB_INLINE ErtsMessage *erts_alloc_message_heap(Process *pp,
						     ErtsProcLocks *plp,
						     Uint sz,
						     Eterm **hpp,
						     ErlOffHeap **ohpp);

ERTS_GLB_INLINE void erts_shrink_message_heap(ErtsMessage **msgpp, Process *pp,
					      Eterm *start_hp, Eterm *used_hp, Eterm *end_hp,
					      Eterm *brefs, Uint brefs_size);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE
ErtsSchedulerData *erts_proc_sched_data(Process *c_p)
{
    ErtsSchedulerData *esdp;
    ASSERT(c_p);
#if !defined(ERTS_SMP)
    esdp = erts_get_scheduler_data();
#else
    esdp = c_p->scheduler_data;
#  if defined(ERTS_DIRTY_SCHEDULERS)
    if (esdp) {
	ASSERT(esdp == erts_get_scheduler_data());
	ASSERT(!ERTS_SCHEDULER_IS_DIRTY(esdp));
    }
    else {
	esdp = erts_get_scheduler_data();
	ASSERT(esdp);
	ASSERT(ERTS_SCHEDULER_IS_DIRTY(esdp));
    }
#  endif
#endif
    ASSERT(esdp);
    return esdp;
}

ERTS_GLB_INLINE
int erts_is_scheduler_bound(ErtsSchedulerData *esdp)
{
    if (!esdp)
	esdp = erts_get_scheduler_data();
    ASSERT(esdp);
    return esdp->cpu_id >= 0;
}

ERTS_GLB_INLINE
Process *erts_get_current_process(void)
{
    ErtsSchedulerData *esdp = erts_get_scheduler_data();
    return esdp ? esdp->current_process : NULL;
}

ERTS_GLB_INLINE
Eterm erts_get_current_pid(void)
{
    Process *proc = erts_get_current_process();
    return proc ? proc->common.id : THE_NON_VALUE;
}

ERTS_GLB_INLINE
Uint erts_get_scheduler_id(void)
{
#ifdef ERTS_SMP
    ErtsSchedulerData *esdp = erts_get_scheduler_data();
#ifdef ERTS_DIRTY_SCHEDULERS
    if (esdp && ERTS_SCHEDULER_IS_DIRTY(esdp))
	return 0;
    else
#endif
	return esdp ? esdp->no : (Uint) 0;
#else
    return erts_get_scheduler_data() ? (Uint) 1 : (Uint) 0;
#endif
}

ERTS_GLB_INLINE ErtsRunQueue *
erts_get_runq_proc(Process *p)
{
#ifdef ERTS_SMP
    ASSERT(ERTS_AINT_NULL != erts_atomic_read_nob(&p->run_queue));
    return (ErtsRunQueue *) erts_atomic_read_nob(&p->run_queue);
#else
    return ERTS_RUNQ_IX(0);
#endif
}

ERTS_GLB_INLINE ErtsRunQueue *
erts_get_runq_current(ErtsSchedulerData *esdp)
{
    ASSERT(!esdp || esdp == erts_get_scheduler_data());
#ifdef ERTS_SMP
    if (!esdp)
	esdp = erts_get_scheduler_data();
    return esdp->run_queue;
#else
    return ERTS_RUNQ_IX(0);
#endif
}

ERTS_GLB_INLINE void
erts_smp_runq_lock(ErtsRunQueue *rq)
{
#ifdef ERTS_SMP
    erts_smp_mtx_lock(&rq->mtx);
#endif
}

ERTS_GLB_INLINE int
erts_smp_runq_trylock(ErtsRunQueue *rq)
{
#ifdef ERTS_SMP
    return erts_smp_mtx_trylock(&rq->mtx);
#else
    return 0;
#endif
}

ERTS_GLB_INLINE void
erts_smp_runq_unlock(ErtsRunQueue *rq)
{
#ifdef ERTS_SMP
    erts_smp_mtx_unlock(&rq->mtx);
#endif
}

ERTS_GLB_INLINE void
erts_smp_xrunq_lock(ErtsRunQueue *rq, ErtsRunQueue *xrq)
{
#ifdef ERTS_SMP
    ERTS_SMP_LC_ASSERT(erts_smp_lc_mtx_is_locked(&rq->mtx));
    if (xrq != rq) {
	if (erts_smp_mtx_trylock(&xrq->mtx) == EBUSY) {
	    if (rq < xrq)
		erts_smp_mtx_lock(&xrq->mtx);
	    else {
		erts_smp_mtx_unlock(&rq->mtx);
		erts_smp_mtx_lock(&xrq->mtx);
		erts_smp_mtx_lock(&rq->mtx);
	    }
	}
    }
#endif
}

ERTS_GLB_INLINE void
erts_smp_xrunq_unlock(ErtsRunQueue *rq, ErtsRunQueue *xrq)
{
#ifdef ERTS_SMP
    if (xrq != rq)
	erts_smp_mtx_unlock(&xrq->mtx);
#endif
}

ERTS_GLB_INLINE void
erts_smp_runqs_lock(ErtsRunQueue *rq1, ErtsRunQueue *rq2)
{
#ifdef ERTS_SMP
    ASSERT(rq1 && rq2);
    if (rq1 == rq2)
	erts_smp_mtx_lock(&rq1->mtx);
    else if (rq1 < rq2) {
	erts_smp_mtx_lock(&rq1->mtx);
	erts_smp_mtx_lock(&rq2->mtx);	
    }
    else {
	erts_smp_mtx_lock(&rq2->mtx);
	erts_smp_mtx_lock(&rq1->mtx);	
    }
#endif
}

ERTS_GLB_INLINE void
erts_smp_runqs_unlock(ErtsRunQueue *rq1, ErtsRunQueue *rq2)
{
#ifdef ERTS_SMP
    ASSERT(rq1 && rq2);
    erts_smp_mtx_unlock(&rq1->mtx);
    if (rq1 != rq2)
	erts_smp_mtx_unlock(&rq2->mtx);
#endif
}

ERTS_GLB_INLINE ErtsMessage *
erts_alloc_message_heap_state(Process *pp,
			      erts_aint32_t *psp,
			      ErtsProcLocks *plp,
			      Uint sz,
			      Eterm **hpp,
			      ErlOffHeap **ohpp)
{
    int on_heap;
    ErtsMessage *mp;

    if ((*psp) & ERTS_PSFLG_OFF_HEAP_MSGQ) {
	mp = erts_alloc_message(sz, hpp);
	*ohpp = sz == 0 ? NULL : &mp->hfrag.off_heap;
	return mp;
    }

    mp = erts_try_alloc_message_on_heap(pp, psp, plp, sz, hpp, ohpp, &on_heap);
    ASSERT(pp || !on_heap);
    return mp;
}

ERTS_GLB_INLINE ErtsMessage *
erts_alloc_message_heap(Process *pp,
			ErtsProcLocks *plp,
			Uint sz,
			Eterm **hpp,
			ErlOffHeap **ohpp)
{
    erts_aint32_t state = pp ? erts_smp_atomic32_read_nob(&pp->state) : 0;
    return erts_alloc_message_heap_state(pp, &state, plp, sz, hpp, ohpp);
}

ERTS_GLB_INLINE void
erts_shrink_message_heap(ErtsMessage **msgpp, Process *pp,
			 Eterm *start_hp, Eterm *used_hp, Eterm *end_hp,
			 Eterm *brefs, Uint brefs_size)
{
    ASSERT(start_hp <= used_hp && used_hp <= end_hp);
    if ((*msgpp)->data.attached == ERTS_MSG_COMBINED_HFRAG)
	*msgpp = erts_shrink_message(*msgpp, used_hp - start_hp,
				     brefs, brefs_size);
    else if (!(*msgpp)->data.attached) {
	ERTS_SMP_LC_ASSERT(ERTS_PROC_LOCK_MAIN
			   & erts_proc_lc_my_proc_locks(pp));
	HRelease(pp, end_hp, used_hp);
    }
    else {
	ErlHeapFragment *hfrag = (*msgpp)->data.heap_frag;
	if (start_hp != used_hp)
	    hfrag = erts_resize_message_buffer(hfrag, used_hp - start_hp,
					       brefs, brefs_size);
	else {
	    free_message_buffer(hfrag);
	    hfrag = NULL;
	}
	(*msgpp)->data.heap_frag = hfrag;
    }
}

#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */

ERTS_GLB_INLINE ErtsAtomCacheMap *erts_get_atom_cache_map(Process *c_p);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE ErtsAtomCacheMap *
erts_get_atom_cache_map(Process *c_p)
{
    ErtsSchedulerData *esdp = (c_p
			       ? erts_proc_sched_data(c_p)
			       : erts_get_scheduler_data());
    ASSERT(esdp);
    return &esdp->atom_cache_map;
}
#endif

#ifdef __WIN32__
/*
 * Don't want erts_time2reds() inlined in beam_emu.c on windows since
 * it is compiled with gcc which fails on it. Implementation is in
 * erl_process.c on windows.
 */
#  define ERTS_TIME2REDS_IMPL__ erts_time2reds__
#else
#  define ERTS_TIME2REDS_IMPL__ erts_time2reds
#endif

ERTS_GLB_INLINE Sint64 ERTS_TIME2REDS_IMPL__(ErtsMonotonicTime start,
					     ErtsMonotonicTime end);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE Sint64
ERTS_TIME2REDS_IMPL__(ErtsMonotonicTime start, ErtsMonotonicTime end)
{
    ErtsMonotonicTime time = end - start;
    ASSERT(time >= 0);
    time = ERTS_MONOTONIC_TO_USEC(time);
    if (time == 0)
	return (Sint64) 1; /* At least one reduction */
    /* Currently two reductions per micro second */
    time *= (CONTEXT_REDS-1)/1000 + 1;
    return (Sint64) time;
}
#endif

Process *erts_pid2proc_suspend(Process *,
			       ErtsProcLocks,
			       Eterm,
			       ErtsProcLocks);
#ifdef ERTS_SMP

Process *erts_pid2proc_not_running(Process *,
				   ErtsProcLocks,
				   Eterm,
				   ErtsProcLocks);
Process *erts_pid2proc_nropt(Process *c_p,
			     ErtsProcLocks c_p_locks,
			     Eterm pid,
			     ErtsProcLocks pid_locks);
extern int erts_disable_proc_not_running_opt;

#ifdef DEBUG
#define ERTS_SMP_ASSERT_IS_NOT_EXITING(P) \
    do { ASSERT(!ERTS_PROC_IS_EXITING((P))); } while (0)
#else
#define ERTS_SMP_ASSERT_IS_NOT_EXITING(P)
#endif

#else /* !ERTS_SMP */

#define ERTS_SMP_ASSERT_IS_NOT_EXITING(P)

#define erts_pid2proc_not_running erts_pid2proc
#define erts_pid2proc_nropt erts_pid2proc

#endif

#define ERTS_PROC_IS_EXITING(P) \
    (ERTS_PSFLG_EXITING & erts_smp_atomic32_read_acqb(&(P)->state))


/* Minimum NUMBER of processes for a small system to start */
#define ERTS_MIN_PROCESSES		1024
#if defined(ERTS_SMP) && ERTS_MIN_PROCESSES < ERTS_NO_OF_PIX_LOCKS
#undef ERTS_MIN_PROCESSES
#define ERTS_MIN_PROCESSES		ERTS_NO_OF_PIX_LOCKS
#endif

void erts_smp_notify_inc_runq(ErtsRunQueue *runq);

void erts_interupt_aux_thread_timed(ErtsMonotonicTime timeout_time);

#ifdef ERTS_SMP
void erts_sched_finish_poke(ErtsSchedulerSleepInfo *, erts_aint32_t);
ERTS_GLB_INLINE void erts_sched_poke(ErtsSchedulerSleepInfo *ssi);

#if ERTS_GLB_INLINE_INCL_FUNC_DEF

ERTS_GLB_INLINE void
erts_sched_poke(ErtsSchedulerSleepInfo *ssi)
{
    erts_aint32_t flags;
    ERTS_THR_MEMORY_BARRIER;
    flags = erts_smp_atomic32_read_nob(&ssi->flags);
    if (flags & ERTS_SSI_FLG_SLEEPING) {
	flags = erts_smp_atomic32_read_band_nob(&ssi->flags, ~ERTS_SSI_FLGS_SLEEP);
	erts_sched_finish_poke(ssi, flags);
    }
}


#endif /* #if ERTS_GLB_INLINE_INCL_FUNC_DEF */

#endif /* #ifdef ERTS_SMP */

#include "erl_process_lock.h"

#undef ERTS_INCLUDE_SCHEDULER_INTERNALS

#endif


void erts_halt(int code);
extern erts_smp_atomic32_t erts_halt_progress;
extern int erts_halt_code;