summaryrefslogtreecommitdiff
path: root/src/mem/slicc/symbols/StateMachine.py
blob: b5c12fe25b5f65f50b51a2bab1887b4e6d98a56f (plain)
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
# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
# Copyright (c) 2009 The Hewlett-Packard Development Company
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

from m5.util import code_formatter, orderdict

from slicc.symbols.Symbol import Symbol
from slicc.symbols.Var import Var
import slicc.generate.html as html

python_class_map = {"int": "Int",
                    "string": "String",
                    "bool": "Bool",
                    "CacheMemory": "RubyCache",
                    "Sequencer": "RubySequencer",
                    "DirectoryMemory": "RubyDirectoryMemory",
                    "MemoryControl": "RubyMemoryControl",
                    "DMASequencer": "DMASequencer"
                    }

class StateMachine(Symbol):
    def __init__(self, symtab, ident, location, pairs, config_parameters):
        super(StateMachine, self).__init__(symtab, ident, location, pairs)
        self.table = None
        self.config_parameters = config_parameters
        for param in config_parameters:
            if param.pointer:
                var = Var(symtab, param.name, location, param.type_ast.type,
                          "(*m_%s_ptr)" % param.name, {}, self)
            else:
                var = Var(symtab, param.name, location, param.type_ast.type,
                          "m_%s" % param.name, {}, self)
            self.symtab.registerSym(param.name, var)

        self.states = orderdict()
        self.events = orderdict()
        self.actions = orderdict()
        self.transitions = []
        self.in_ports = []
        self.functions = []
        self.objects = []

        self.message_buffer_names = []

    def __repr__(self):
        return "[StateMachine: %s]" % self.ident

    def addState(self, state):
        assert self.table is None
        self.states[state.ident] = state

    def addEvent(self, event):
        assert self.table is None
        self.events[event.ident] = event

    def addAction(self, action):
        assert self.table is None

        # Check for duplicate action
        for other in self.actions.itervalues():
            if action.ident == other.ident:
                action.warning("Duplicate action definition: %s" % action.ident)
                action.error("Duplicate action definition: %s" % action.ident)
            if action.short == other.short:
                other.warning("Duplicate action shorthand: %s" % other.ident)
                other.warning("    shorthand = %s" % other.short)
                action.warning("Duplicate action shorthand: %s" % action.ident)
                action.error("    shorthand = %s" % action.short)

        self.actions[action.ident] = action

    def addTransition(self, trans):
        assert self.table is None
        self.transitions.append(trans)

    def addInPort(self, var):
        self.in_ports.append(var)

    def addFunc(self, func):
        # register func in the symbol table
        self.symtab.registerSym(str(func), func)
        self.functions.append(func)

    def addObject(self, obj):
        self.objects.append(obj)

    # Needs to be called before accessing the table
    def buildTable(self):
        assert self.table is None

        table = {}

        for trans in self.transitions:
            # Track which actions we touch so we know if we use them
            # all -- really this should be done for all symbols as
            # part of the symbol table, then only trigger it for
            # Actions, States, Events, etc.

            for action in trans.actions:
                action.used = True

            index = (trans.state, trans.event)
            if index in table:
                table[index].warning("Duplicate transition: %s" % table[index])
                trans.error("Duplicate transition: %s" % trans)
            table[index] = trans

        # Look at all actions to make sure we used them all
        for action in self.actions.itervalues():
            if not action.used:
                error_msg = "Unused action: %s" % action.ident
                if "desc" in action:
                    error_msg += ", "  + action.desc
                action.warning(error_msg)
        self.table = table

    def writeCodeFiles(self, path):
        self.printControllerPython(path)
        self.printControllerHH(path)
        self.printControllerCC(path)
        self.printCSwitch(path)
        self.printCWakeup(path)
        self.printProfilerCC(path)
        self.printProfilerHH(path)

        for func in self.functions:
            func.writeCodeFiles(path)

    def printControllerPython(self, path):
        code = code_formatter()
        ident = self.ident
        py_ident = "%s_Controller" % ident
        c_ident = "%s_Controller" % self.ident
        code('''
from m5.params import *
from m5.SimObject import SimObject
from Controller import RubyController

class $py_ident(RubyController):
    type = '$py_ident'
''')
        code.indent()
        for param in self.config_parameters:
            dflt_str = ''
            if param.default is not None:
                dflt_str = str(param.default) + ', '
            if python_class_map.has_key(param.type_ast.type.c_ident):
                python_type = python_class_map[param.type_ast.type.c_ident]
                code('${{param.name}} = Param.${{python_type}}(${dflt_str}"")')
            else:
                self.error("Unknown c++ to python class conversion for c++ " \
                           "type: '%s'. Please update the python_class_map " \
                           "in StateMachine.py", param.type_ast.type.c_ident)
        code.dedent()
        code.write(path, '%s.py' % py_ident)
        

    def printControllerHH(self, path):
        '''Output the method declarations for the class declaration'''
        code = code_formatter()
        ident = self.ident
        c_ident = "%s_Controller" % self.ident

        self.message_buffer_names = []

        code('''
/** \\file $ident.hh
 *
 * Auto generated C++ code started by $__file__:$__line__
 * Created by slicc definition of Module "${{self.short}}"
 */

#ifndef ${ident}_CONTROLLER_H
#define ${ident}_CONTROLLER_H

#include "params/$c_ident.hh"

#include "mem/ruby/common/Global.hh"
#include "mem/ruby/common/Consumer.hh"
#include "mem/ruby/slicc_interface/AbstractController.hh"
#include "mem/protocol/TransitionResult.hh"
#include "mem/protocol/Types.hh"
#include "mem/protocol/${ident}_Profiler.hh"
''')

        seen_types = set()
        for var in self.objects:
            if var.type.ident not in seen_types and not var.type.isPrimitive:
                code('#include "mem/protocol/${{var.type.c_ident}}.hh"')
            seen_types.add(var.type.ident)

        # for adding information to the protocol debug trace
        code('''
extern stringstream ${ident}_transitionComment;

class $c_ident : public AbstractController {
#ifdef CHECK_COHERENCE
#endif /* CHECK_COHERENCE */
public:
    typedef ${c_ident}Params Params;
    $c_ident(const Params *p);
    static int getNumControllers();
    void init();
    MessageBuffer* getMandatoryQueue() const;
    const int & getVersion() const;
    const string toString() const;
    const string getName() const;
    const MachineType getMachineType() const;
    void initNetworkPtr(Network* net_ptr) { m_net_ptr = net_ptr; }
    void print(ostream& out) const;
    void printConfig(ostream& out) const;
    void wakeup();
    void printStats(ostream& out) const;
    void clearStats();
    void blockOnQueue(Address addr, MessageBuffer* port);
    void unblock(Address addr);
private:
''')

        code.indent()
        # added by SS
        for param in self.config_parameters:
            if param.pointer:
                code('${{param.type_ast.type}}* m_${{param.ident}}_ptr;')
            else:
                code('${{param.type_ast.type}} m_${{param.ident}};')

        code('''
int m_number_of_TBEs;

TransitionResult doTransition(${ident}_Event event, ${ident}_State state, const Address& addr); // in ${ident}_Transitions.cc
TransitionResult doTransitionWorker(${ident}_Event event, ${ident}_State state, ${ident}_State& next_state, const Address& addr); // in ${ident}_Transitions.cc
string m_name;
int m_transitions_per_cycle;
int m_buffer_size;
int m_recycle_latency;
map< string, string > m_cfg;
NodeID m_version;
Network* m_net_ptr;
MachineID m_machineID;
bool m_is_blocking;
map< Address, MessageBuffer* > m_block_map;
${ident}_Profiler s_profiler;
static int m_num_controllers;
// Internal functions
''')

        for func in self.functions:
            proto = func.prototype
            if proto:
                code('$proto')

        code('''

// Actions
''')
        for action in self.actions.itervalues():
            code('/** \\brief ${{action.desc}} */')
            code('void ${{action.ident}}(const Address& addr);')

        # the controller internal variables
        code('''

// Object
''')
        for var in self.objects:
            th = var.get("template_hack", "")
            code('${{var.type.c_ident}}$th* m_${{var.c_ident}}_ptr;')

            if var.type.ident == "MessageBuffer":
                self.message_buffer_names.append("m_%s_ptr" % var.c_ident)

        code.dedent()
        code('};')
        code('#endif // ${ident}_CONTROLLER_H')
        code.write(path, '%s.hh' % c_ident)

    def printControllerCC(self, path):
        '''Output the actions for performing the actions'''

        code = code_formatter()
        ident = self.ident
        c_ident = "%s_Controller" % self.ident

        code('''
/** \\file $ident.cc
 *
 * Auto generated C++ code started by $__file__:$__line__
 * Created by slicc definition of Module "${{self.short}}"
 */

#include "mem/ruby/common/Global.hh"
#include "mem/ruby/slicc_interface/RubySlicc_includes.hh"
#include "mem/protocol/${ident}_Controller.hh"
#include "mem/protocol/${ident}_State.hh"
#include "mem/protocol/${ident}_Event.hh"
#include "mem/protocol/Types.hh"
#include "mem/ruby/system/System.hh"
''')

        # include object classes
        seen_types = set()
        for var in self.objects:
            if var.type.ident not in seen_types and not var.type.isPrimitive:
                code('#include "mem/protocol/${{var.type.c_ident}}.hh"')
            seen_types.add(var.type.ident)

        code('''
$c_ident *
${c_ident}Params::create()
{
    return new $c_ident(this);
}


int $c_ident::m_num_controllers = 0;

stringstream ${ident}_transitionComment;
#define APPEND_TRANSITION_COMMENT(str) (${ident}_transitionComment << str)
/** \\brief constructor */
$c_ident::$c_ident(const Params *p)
    : AbstractController(p)
{
    m_version = p->version;
    m_transitions_per_cycle = p->transitions_per_cycle;
    m_buffer_size = p->buffer_size;
    m_recycle_latency = p->recycle_latency;
    m_number_of_TBEs = p->number_of_TBEs;
    m_is_blocking = false;
''')
        code.indent()

        #
        # After initializing the universal machine parameters, initialize the
        # this machines config parameters.  Also detemine if these configuration
        # params include a sequencer.  This information will be used later for
        # contecting the sequencer back to the L1 cache controller.
        #
        contains_sequencer = False
        for param in self.config_parameters:
            if param.name == "sequencer" or param.name == "dma_sequencer":
                contains_sequencer = True
            if param.pointer:
                code('m_${{param.name}}_ptr = p->${{param.name}};')
            else:
                code('m_${{param.name}} = p->${{param.name}};')

        #
        # For the l1 cache controller, add the special atomic support which 
        # includes passing the sequencer a pointer to the controller.
        #
        if self.ident == "L1Cache":
            if not contains_sequencer:
                self.error("The L1Cache controller must include the sequencer " \
                           "configuration parameter")

            code('''
m_sequencer_ptr->setController(this);
''')
        #
        # For the DMA controller, pass the sequencer a pointer to the
        # controller.
        #
        if self.ident == "DMA":
            if not contains_sequencer:
                self.error("The DMA controller must include the sequencer " \
                           "configuration parameter")

            code('''
m_dma_sequencer_ptr->setController(this);
''')
            
        code('m_num_controllers++;')
        for var in self.objects:
            if var.ident.find("mandatoryQueue") >= 0:
                code('m_${{var.c_ident}}_ptr = new ${{var.type.c_ident}}();')

        code.dedent()
        code('''
}

void $c_ident::init()
{
    m_machineID.type = MachineType_${ident};
    m_machineID.num = m_version;

    // Objects
    s_profiler.setVersion(m_version);
''')

        code.indent()
        for var in self.objects:
            vtype = var.type
            vid = "m_%s_ptr" % var.c_ident
            if "network" not in var:
                # Not a network port object
                if "primitive" in vtype:
                    code('$vid = new ${{vtype.c_ident}};')
                    if "default" in var:
                        code('(*$vid) = ${{var["default"]}};')
                else:
                    # Normal Object
                    # added by SS
                    if "factory" in var:
                        code('$vid = ${{var["factory"]}};')
                    elif var.ident.find("mandatoryQueue") < 0:
                        th = var.get("template_hack", "")
                        expr = "%s  = new %s%s" % (vid, vtype.c_ident, th)

                        args = ""
                        if "non_obj" not in vtype and not vtype.isEnumeration:
                            if expr.find("TBETable") >= 0:
                                args = "m_number_of_TBEs"
                            else:
                                args = var.get("constructor_hack", "")
                            args = "(%s)" % args

                        code('$expr$args;')
                    else:
                        code(';')

                    code('assert($vid != NULL);')

                    if "default" in var:
                        code('(*$vid) = ${{var["default"]}}; // Object default')
                    elif "default" in vtype:
                        code('(*$vid) = ${{vtype["default"]}}; // Type ${{vtype.ident}} default')

                    # Set ordering
                    if "ordered" in var and "trigger_queue" not in var:
                        # A buffer
                        code('$vid->setOrdering(${{var["ordered"]}});')

                    # Set randomization
                    if "random" in var:
                        # A buffer
                        code('$vid->setRandomization(${{var["random"]}});')

                    # Set Priority
                    if vtype.isBuffer and \
                           "rank" in var and "trigger_queue" not in var:
                        code('$vid->setPriority(${{var["rank"]}});')
            else:
                # Network port object
                network = var["network"]
                ordered =  var["ordered"]
                vnet = var["virtual_network"]

                assert var.machine is not None
                code('''
$vid = m_net_ptr->get${network}NetQueue(m_version+MachineType_base_number(string_to_MachineType("${{var.machine.ident}}")), $ordered, $vnet);
''')

                code('assert($vid != NULL);')

                # Set ordering
                if "ordered" in var:
                    # A buffer
                    code('$vid->setOrdering(${{var["ordered"]}});')

                # Set randomization
                if "random" in var:
                    # A buffer
                    code('$vid->setRandomization(${{var["random"]}})')

                # Set Priority
                if "rank" in var:
                    code('$vid->setPriority(${{var["rank"]}})')

                # Set buffer size
                if vtype.isBuffer:
                    code('''
if (m_buffer_size > 0) {
    $vid->setSize(m_buffer_size);
}
''')

                # set description (may be overriden later by port def)
                code('$vid->setDescription("[Version " + int_to_string(m_version) + ", ${ident}, name=${{var.c_ident}}]");')

        # Set the queue consumers
        code.insert_newline()
        for port in self.in_ports:
            code('${{port.code}}.setConsumer(this);')

        # Set the queue descriptions
        code.insert_newline()
        for port in self.in_ports:
            code('${{port.code}}.setDescription("[Version " + int_to_string(m_version) + ", $ident, $port]");')

        # Initialize the transition profiling
        code.insert_newline()
        for trans in self.transitions:
            # Figure out if we stall
            stall = False
            for action in trans.actions:
                if action.ident == "z_stall":
                    stall = True

            # Only possible if it is not a 'z' case
            if not stall:
                state = "%s_State_%s" % (self.ident, trans.state.ident)
                event = "%s_Event_%s" % (self.ident, trans.event.ident)
                code('s_profiler.possibleTransition($state, $event);')

        # added by SS to initialize recycle_latency of message buffers
        for buf in self.message_buffer_names:
            code("$buf->setRecycleLatency(m_recycle_latency);")

        code.dedent()
        code('}')

        has_mandatory_q = False
        for port in self.in_ports:
            if port.code.find("mandatoryQueue_ptr") >= 0:
                has_mandatory_q = True

        if has_mandatory_q:
            mq_ident = "m_%s_mandatoryQueue_ptr" % self.ident
        else:
            mq_ident = "NULL"

        code('''
int $c_ident::getNumControllers() {
    return m_num_controllers;
}

MessageBuffer* $c_ident::getMandatoryQueue() const {
    return $mq_ident;
}

const int & $c_ident::getVersion() const{
    return m_version;
}

const string $c_ident::toString() const{
    return "$c_ident";
}

const string $c_ident::getName() const{
    return m_name;
}
const MachineType $c_ident::getMachineType() const{
    return MachineType_${ident};
}

void $c_ident::blockOnQueue(Address addr, MessageBuffer* port) {
    m_is_blocking = true;
    m_block_map[addr] = port;
}
void $c_ident::unblock(Address addr) {
    m_block_map.erase(addr);
    if (m_block_map.size() == 0) {
       m_is_blocking = false;
    }
}

void $c_ident::print(ostream& out) const { out << "[$c_ident " << m_version << "]"; }

void $c_ident::printConfig(ostream& out) const {
    out << "$c_ident config: " << m_name << endl;
    out << "  version: " << m_version << endl;
    for (map<string, string>::const_iterator it = m_cfg.begin(); it != m_cfg.end(); it++) {
        out << "  " << (*it).first << ": " << (*it).second << endl;
    }
}

void $c_ident::printStats(ostream& out) const {
''')
        #
        # Cache and Memory Controllers have specific profilers associated with
        # them.  Print out these stats before dumping state transition stats.
        #
        for param in self.config_parameters:
            if param.type_ast.type.ident == "CacheMemory" or \
                   param.type_ast.type.ident == "MemoryControl":
                assert(param.pointer)
                code('    m_${{param.ident}}_ptr->printStats(out);')

        code('''
    s_profiler.dumpStats(out);
}

void $c_ident::clearStats() {
''')
        #
        # Cache and Memory Controllers have specific profilers associated with
        # them.  These stats must be cleared too.
        #
        for param in self.config_parameters:
            if param.type_ast.type.ident == "CacheMemory" or \
                   param.type_ast.type.ident == "MemoryControl":
                assert(param.pointer)
                code('    m_${{param.ident}}_ptr->clearStats();')

        code('''
    s_profiler.clearStats();
}

// Actions
''')

        for action in self.actions.itervalues():
            if "c_code" not in action:
                continue

            code('''
/** \\brief ${{action.desc}} */
void $c_ident::${{action.ident}}(const Address& addr)
{
    DEBUG_MSG(GENERATED_COMP, HighPrio, "executing");
    ${{action["c_code"]}}
}

''')
        code.write(path, "%s.cc" % c_ident)

    def printCWakeup(self, path):
        '''Output the wakeup loop for the events'''

        code = code_formatter()
        ident = self.ident

        code('''
// Auto generated C++ code started by $__file__:$__line__
// ${ident}: ${{self.short}}

#include "mem/ruby/common/Global.hh"
#include "mem/ruby/slicc_interface/RubySlicc_includes.hh"
#include "mem/protocol/${ident}_Controller.hh"
#include "mem/protocol/${ident}_State.hh"
#include "mem/protocol/${ident}_Event.hh"
#include "mem/protocol/Types.hh"
#include "mem/ruby/system/System.hh"

void ${ident}_Controller::wakeup()
{

    int counter = 0;
    while (true) {
        // Some cases will put us into an infinite loop without this limit
        assert(counter <= m_transitions_per_cycle);
        if (counter == m_transitions_per_cycle) {
            g_system_ptr->getProfiler()->controllerBusy(m_machineID); // Count how often we\'re fully utilized
            g_eventQueue_ptr->scheduleEvent(this, 1); // Wakeup in another cycle and try again
            break;
        }
''')

        code.indent()
        code.indent()

        # InPorts
        #
        for port in self.in_ports:
            code.indent()
            code('// ${ident}InPort $port')
            code('${{port["c_code_in_port"]}}')
            code.dedent()

            code('')

        code.dedent()
        code.dedent()
        code('''
        break;  // If we got this far, we have nothing left todo
    }
}
''')

        code.write(path, "%s_Wakeup.cc" % self.ident)

    def printCSwitch(self, path):
        '''Output switch statement for transition table'''

        code = code_formatter()
        ident = self.ident

        code('''
// Auto generated C++ code started by $__file__:$__line__
// ${ident}: ${{self.short}}

#include "mem/ruby/common/Global.hh"
#include "mem/protocol/${ident}_Controller.hh"
#include "mem/protocol/${ident}_State.hh"
#include "mem/protocol/${ident}_Event.hh"
#include "mem/protocol/Types.hh"
#include "mem/ruby/system/System.hh"

#define HASH_FUN(state, event)  ((int(state)*${ident}_Event_NUM)+int(event))

#define GET_TRANSITION_COMMENT() (${ident}_transitionComment.str())
#define CLEAR_TRANSITION_COMMENT() (${ident}_transitionComment.str(""))

TransitionResult ${ident}_Controller::doTransition(${ident}_Event event, ${ident}_State state, const Address& addr
)
{
    ${ident}_State next_state = state;

    DEBUG_NEWLINE(GENERATED_COMP, MedPrio);
    DEBUG_MSG(GENERATED_COMP, MedPrio, *this);
    DEBUG_EXPR(GENERATED_COMP, MedPrio, g_eventQueue_ptr->getTime());
    DEBUG_EXPR(GENERATED_COMP, MedPrio,state);
    DEBUG_EXPR(GENERATED_COMP, MedPrio,event);
    DEBUG_EXPR(GENERATED_COMP, MedPrio,addr);

    TransitionResult result = doTransitionWorker(event, state, next_state, addr);

    if (result == TransitionResult_Valid) {
        DEBUG_EXPR(GENERATED_COMP, MedPrio, next_state);
        DEBUG_NEWLINE(GENERATED_COMP, MedPrio);
        s_profiler.countTransition(state, event);
        if (Debug::getProtocolTrace()) {
            g_system_ptr->getProfiler()->profileTransition("${ident}", m_version, addr,
                    ${ident}_State_to_string(state),
                    ${ident}_Event_to_string(event),
                    ${ident}_State_to_string(next_state), GET_TRANSITION_COMMENT());
        }
    CLEAR_TRANSITION_COMMENT();
    ${ident}_setState(addr, next_state);

    } else if (result == TransitionResult_ResourceStall) {
        if (Debug::getProtocolTrace()) {
            g_system_ptr->getProfiler()->profileTransition("${ident}", m_version, addr,
                   ${ident}_State_to_string(state),
                   ${ident}_Event_to_string(event),
                   ${ident}_State_to_string(next_state),
                   "Resource Stall");
        }
    } else if (result == TransitionResult_ProtocolStall) {
        DEBUG_MSG(GENERATED_COMP, HighPrio, "stalling");
        DEBUG_NEWLINE(GENERATED_COMP, MedPrio);
        if (Debug::getProtocolTrace()) {
            g_system_ptr->getProfiler()->profileTransition("${ident}", m_version, addr,
                   ${ident}_State_to_string(state),
                   ${ident}_Event_to_string(event),
                   ${ident}_State_to_string(next_state),
                   "Protocol Stall");
        }
    }

    return result;
}

TransitionResult ${ident}_Controller::doTransitionWorker(${ident}_Event event, ${ident}_State state, ${ident}_State& next_state, const Address& addr
)
{
    switch(HASH_FUN(state, event)) {
''')

        # This map will allow suppress generating duplicate code
        cases = orderdict()

        for trans in self.transitions:
            case_string = "%s_State_%s, %s_Event_%s" % \
                (self.ident, trans.state.ident, self.ident, trans.event.ident)

            case = code_formatter()
            # Only set next_state if it changes
            if trans.state != trans.nextState:
                ns_ident = trans.nextState.ident
                case('next_state = ${ident}_State_${ns_ident};')

            actions = trans.actions

            # Check for resources
            case_sorter = []
            res = trans.resources
            for key,val in res.iteritems():
                if key.type.ident != "DNUCAStopTable":
                    val = '''
if (!%s.areNSlotsAvailable(%s)) {
    return TransitionResult_ResourceStall;
}
''' % (key.code, val)
                case_sorter.append(val)


            # Emit the code sequences in a sorted order.  This makes the
            # output deterministic (without this the output order can vary
            # since Map's keys() on a vector of pointers is not deterministic
            for c in sorted(case_sorter):
                case("$c")

            # Figure out if we stall
            stall = False
            for action in actions:
                if action.ident == "z_stall":
                    stall = True
                    break

            if stall:
                case('return TransitionResult_ProtocolStall;')
            else:
                for action in actions:
                    case('${{action.ident}}(addr);')
                case('return TransitionResult_Valid;')

            case = str(case)

            # Look to see if this transition code is unique.
            if case not in cases:
                cases[case] = []

            cases[case].append(case_string)

        # Walk through all of the unique code blocks and spit out the
        # corresponding case statement elements
        for case,transitions in cases.iteritems():
            # Iterative over all the multiple transitions that share
            # the same code
            for trans in transitions:
                code('  case HASH_FUN($trans):')
            code('  {')
            code('    $case')
            code('  }')

        code('''
      default:
        WARN_EXPR(m_version);
        WARN_EXPR(g_eventQueue_ptr->getTime());
        WARN_EXPR(addr);
        WARN_EXPR(event);
        WARN_EXPR(state);
        ERROR_MSG(\"Invalid transition\");
    }
    return TransitionResult_Valid;
}
''')
        code.write(path, "%s_Transitions.cc" % self.ident)

    def printProfilerHH(self, path):
        code = code_formatter()
        ident = self.ident

        code('''
// Auto generated C++ code started by $__file__:$__line__
// ${ident}: ${{self.short}}

#ifndef ${ident}_PROFILER_H
#define ${ident}_PROFILER_H

#include "mem/ruby/common/Global.hh"
#include "mem/protocol/${ident}_State.hh"
#include "mem/protocol/${ident}_Event.hh"

class ${ident}_Profiler {
  public:
    ${ident}_Profiler();
    void setVersion(int version);
    void countTransition(${ident}_State state, ${ident}_Event event);
    void possibleTransition(${ident}_State state, ${ident}_Event event);
    void dumpStats(ostream& out) const;
    void clearStats();

  private:
    int m_counters[${ident}_State_NUM][${ident}_Event_NUM];
    int m_event_counters[${ident}_Event_NUM];
    bool m_possible[${ident}_State_NUM][${ident}_Event_NUM];
    int m_version;
};

#endif // ${ident}_PROFILER_H
''')
        code.write(path, "%s_Profiler.hh" % self.ident)

    def printProfilerCC(self, path):
        code = code_formatter()
        ident = self.ident

        code('''
// Auto generated C++ code started by $__file__:$__line__
// ${ident}: ${{self.short}}

#include "mem/protocol/${ident}_Profiler.hh"

${ident}_Profiler::${ident}_Profiler()
{
    for (int state = 0; state < ${ident}_State_NUM; state++) {
        for (int event = 0; event < ${ident}_Event_NUM; event++) {
            m_possible[state][event] = false;
            m_counters[state][event] = 0;
        }
    }
    for (int event = 0; event < ${ident}_Event_NUM; event++) {
        m_event_counters[event] = 0;
    }
}
void ${ident}_Profiler::setVersion(int version)
{
    m_version = version;
}
void ${ident}_Profiler::clearStats()
{
    for (int state = 0; state < ${ident}_State_NUM; state++) {
        for (int event = 0; event < ${ident}_Event_NUM; event++) {
            m_counters[state][event] = 0;
        }
    }

    for (int event = 0; event < ${ident}_Event_NUM; event++) {
        m_event_counters[event] = 0;
    }
}
void ${ident}_Profiler::countTransition(${ident}_State state, ${ident}_Event event)
{
    assert(m_possible[state][event]);
    m_counters[state][event]++;
    m_event_counters[event]++;
}
void ${ident}_Profiler::possibleTransition(${ident}_State state, ${ident}_Event event)
{
    m_possible[state][event] = true;
}
void ${ident}_Profiler::dumpStats(ostream& out) const
{
    out << " --- ${ident} " << m_version << " ---" << endl;
    out << " - Event Counts -" << endl;
    for (int event = 0; event < ${ident}_Event_NUM; event++) {
        int count = m_event_counters[event];
        out << (${ident}_Event) event << "  " << count << endl;
    }
    out << endl;
    out << " - Transitions -" << endl;
    for (int state = 0; state < ${ident}_State_NUM; state++) {
        for (int event = 0; event < ${ident}_Event_NUM; event++) {
            if (m_possible[state][event]) {
                int count = m_counters[state][event];
                out << (${ident}_State) state << "  " << (${ident}_Event) event << "  " << count;
                if (count == 0) {
                    out << " <-- ";
                }
                out << endl;
            }
        }
        out << endl;
    }
}
''')
        code.write(path, "%s_Profiler.cc" % self.ident)

    # **************************
    # ******* HTML Files *******
    # **************************
    def frameRef(self, click_href, click_target, over_href, over_target_num,
                 text):
        code = code_formatter(fix_newlines=False)
        code("""<A href=\"$click_href\" target=\"$click_target\" onMouseOver=\"if (parent.frames[$over_target_num].location != parent.location + '$over_href') { parent.frames[$over_target_num].location='$over_href' }\" >${{html.formatShorthand(text)}}</A>""")
        return str(code)

    def writeHTMLFiles(self, path):
        # Create table with no row hilighted
        self.printHTMLTransitions(path, None)

        # Generate transition tables
        for state in self.states.itervalues():
            self.printHTMLTransitions(path, state)

        # Generate action descriptions
        for action in self.actions.itervalues():
            name = "%s_action_%s.html" % (self.ident, action.ident)
            code = html.createSymbol(action, "Action")
            code.write(path, name)

        # Generate state descriptions
        for state in self.states.itervalues():
            name = "%s_State_%s.html" % (self.ident, state.ident)
            code = html.createSymbol(state, "State")
            code.write(path, name)

        # Generate event descriptions
        for event in self.events.itervalues():
            name = "%s_Event_%s.html" % (self.ident, event.ident)
            code = html.createSymbol(event, "Event")
            code.write(path, name)

    def printHTMLTransitions(self, path, active_state):
        code = code_formatter()

        code('''
<HTML><BODY link="blue" vlink="blue">

<H1 align="center">${{html.formatShorthand(self.short)}}:
''')
        code.indent()
        for i,machine in enumerate(self.symtab.getAllType(StateMachine)):
            mid = machine.ident
            if i != 0:
                extra = " - "
            else:
                extra = ""
            if machine == self:
                code('$extra$mid')
            else:
                code('$extra<A target="Table" href="${mid}_table.html">$mid</A>')
        code.dedent()

        code("""
</H1>

<TABLE border=1>
<TR>
  <TH> </TH>
""")

        for event in self.events.itervalues():
            href = "%s_Event_%s.html" % (self.ident, event.ident)
            ref = self.frameRef(href, "Status", href, "1", event.short)
            code('<TH bgcolor=white>$ref</TH>')

        code('</TR>')
        # -- Body of table
        for state in self.states.itervalues():
            # -- Each row
            if state == active_state:
                color = "yellow"
            else:
                color = "white"

            click = "%s_table_%s.html" % (self.ident, state.ident)
            over = "%s_State_%s.html" % (self.ident, state.ident)
            text = html.formatShorthand(state.short)
            ref = self.frameRef(click, "Table", over, "1", state.short)
            code('''
<TR>
  <TH bgcolor=$color>$ref</TH>
''')

            # -- One column for each event
            for event in self.events.itervalues():
                trans = self.table.get((state,event), None)
                if trans is None:
                    # This is the no transition case
                    if state == active_state:
                        color = "#C0C000"
                    else:
                        color = "lightgrey"

                    code('<TD bgcolor=$color>&nbsp;</TD>')
                    continue

                next = trans.nextState
                stall_action = False

                # -- Get the actions
                for action in trans.actions:
                    if action.ident == "z_stall" or \
                       action.ident == "zz_recycleMandatoryQueue":
                        stall_action = True

                # -- Print out "actions/next-state"
                if stall_action:
                    if state == active_state:
                        color = "#C0C000"
                    else:
                        color = "lightgrey"

                elif active_state and next.ident == active_state.ident:
                    color = "aqua"
                elif state == active_state:
                    color = "yellow"
                else:
                    color = "white"

                fix = code.nofix()
                code('<TD bgcolor=$color>')
                for action in trans.actions:
                    href = "%s_action_%s.html" % (self.ident, action.ident)
                    ref = self.frameRef(href, "Status", href, "1",
                                        action.short)
                    code('  $ref\n')
                if next != state:
                    if trans.actions:
                        code('/')
                    click = "%s_table_%s.html" % (self.ident, next.ident)
                    over = "%s_State_%s.html" % (self.ident, next.ident)
                    ref = self.frameRef(click, "Table", over, "1", next.short)
                    code("$ref")
                code("</TD>\n")
                code.fix(fix)

            # -- Each row
            if state == active_state:
                color = "yellow"
            else:
                color = "white"

            click = "%s_table_%s.html" % (self.ident, state.ident)
            over = "%s_State_%s.html" % (self.ident, state.ident)
            ref = self.frameRef(click, "Table", over, "1", state.short)
            code('''
  <TH bgcolor=$color>$ref</TH>
</TR>
''')
        code('''
<TR>
  <TH> </TH>
''')

        for event in self.events.itervalues():
            href = "%s_Event_%s.html" % (self.ident, event.ident)
            ref = self.frameRef(href, "Status", href, "1", event.short)
            code('<TH bgcolor=white>$ref</TH>')
        code('''
</TR>
</TABLE>
</BODY></HTML>
''')


        if active_state:
            name = "%s_table_%s.html" % (self.ident, active_state.ident)
        else:
            name = "%s_table.html" % self.ident
        code.write(path, name)

__all__ = [ "StateMachine" ]