activity.cc revision 2669:f2b336e89d2a 
1
2#include "base/timebuf.hh"
3#include "cpu/activity.hh"
4
5ActivityRecorder::ActivityRecorder(int num_stages, int longest_latency,
6                                   int activity)
7    : activityBuffer(longest_latency, 0), longestLatency(longest_latency),
8      activityCount(activity), numStages(num_stages)
9{
10    stageActive = new bool[numStages];
11    memset(stageActive, 0, numStages);
12}
13
14void
15ActivityRecorder::activity()
16{
17    if (activityBuffer[0]) {
18        return;
19    }
20
21    activityBuffer[0] = true;
22
23    ++activityCount;
24
25    DPRINTF(Activity, "Activity: %i\n", activityCount);
26}
27
28void
29ActivityRecorder::advance()
30{
31    if (activityBuffer[-longestLatency]) {
32        --activityCount;
33
34        assert(activityCount >= 0);
35
36        DPRINTF(Activity, "Activity: %i\n", activityCount);
37
38        if (activityCount == 0) {
39            DPRINTF(Activity, "No activity left!\n");
40        }
41    }
42
43    activityBuffer.advance();
44}
45
46void
47ActivityRecorder::activateStage(const int idx)
48{
49    if (!stageActive[idx]) {
50        ++activityCount;
51
52        stageActive[idx] = true;
53
54        DPRINTF(Activity, "Activity: %i\n", activityCount);
55    } else {
56        DPRINTF(Activity, "Stage %i already active.\n", idx);
57    }
58
59//    assert(activityCount < longestLatency + numStages + 1);
60}
61
62void
63ActivityRecorder::deactivateStage(const int idx)
64{
65    if (stageActive[idx]) {
66        --activityCount;
67
68        stageActive[idx] = false;
69
70        DPRINTF(Activity, "Activity: %i\n", activityCount);
71    } else {
72        DPRINTF(Activity, "Stage %i already inactive.\n", idx);
73    }
74
75    assert(activityCount >= 0);
76}
77
78void
79ActivityRecorder::reset()
80{
81    activityCount = 0;
82    memset(stageActive, 0, numStages);
83    for (int i = 0; i < longestLatency + 1; ++i)
84        activityBuffer.advance();
85}
86
87void
88ActivityRecorder::dump()
89{
90    for (int i = 0; i <= longestLatency; ++i) {
91        cprintf("[Idx:%i %i] ", i, activityBuffer[-i]);
92    }
93
94    cprintf("\n");
95
96    for (int i = 0; i < numStages; ++i) {
97        cprintf("[Stage:%i %i]\n", i, stageActive[i]);
98    }
99
100    cprintf("\n");
101
102    cprintf("Activity count: %i\n", activityCount);
103}
104
105void
106ActivityRecorder::validate()
107{
108    int count = 0;
109    for (int i = 0; i <= longestLatency; ++i) {
110        if (activityBuffer[-i]) {
111            count++;
112        }
113    }
114
115    for (int i = 0; i < numStages; ++i) {
116        if (stageActive[i]) {
117            count++;
118        }
119    }
120
121    assert(count == activityCount);
122}
123