2 * Copyright (c) 2006 The Regents of The University of Michigan
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14 * this software without specific prior written permission.
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33 #include "cpu/activity.hh"
34 #include "cpu/timebuf.hh"
35 #include "debug/Activity.hh"
39 ActivityRecorder::ActivityRecorder(const string
&name
, int num_stages
,
40 int longest_latency
, int activity
)
41 : _name(name
), activityBuffer(longest_latency
, 0),
42 longestLatency(longest_latency
), activityCount(activity
),
45 stageActive
= new bool[numStages
];
46 std::memset(stageActive
, 0, numStages
);
50 ActivityRecorder::activity()
52 // If we've already recorded activity for this cycle, we don't
53 // want to increment the count any more.
54 if (activityBuffer
[0]) {
58 activityBuffer
[0] = true;
62 DPRINTF(Activity
, "Activity: %i\n", activityCount
);
66 ActivityRecorder::advance()
68 // If there's a 1 in the slot that is about to be erased once the
69 // time buffer advances, then decrement the activityCount.
70 if (activityBuffer
[-longestLatency
]) {
73 assert(activityCount
>= 0);
75 DPRINTF(Activity
, "Activity: %i\n", activityCount
);
77 if (activityCount
== 0) {
78 DPRINTF(Activity
, "No activity left!\n");
82 activityBuffer
.advance();
86 ActivityRecorder::activateStage(const int idx
)
88 // Increment the activity count if this stage wasn't already active.
89 if (!stageActive
[idx
]) {
92 stageActive
[idx
] = true;
94 DPRINTF(Activity
, "Activity: %i\n", activityCount
);
96 DPRINTF(Activity
, "Stage %i already active.\n", idx
);
99 // assert(activityCount < longestLatency + numStages + 1);
103 ActivityRecorder::deactivateStage(const int idx
)
105 // Decrement the activity count if this stage was active.
106 if (stageActive
[idx
]) {
109 stageActive
[idx
] = false;
111 DPRINTF(Activity
, "Activity: %i\n", activityCount
);
113 DPRINTF(Activity
, "Stage %i already inactive.\n", idx
);
116 assert(activityCount
>= 0);
120 ActivityRecorder::reset()
123 std::memset(stageActive
, 0, numStages
);
124 for (int i
= 0; i
< longestLatency
+ 1; ++i
)
125 activityBuffer
.advance();
129 ActivityRecorder::dump()
131 for (int i
= 0; i
<= longestLatency
; ++i
) {
132 cprintf("[Idx:%i %i] ", i
, activityBuffer
[-i
]);
137 for (int i
= 0; i
< numStages
; ++i
) {
138 cprintf("[Stage:%i %i]\n", i
, stageActive
[i
]);
143 cprintf("Activity count: %i\n", activityCount
);
147 ActivityRecorder::validate()
150 for (int i
= 0; i
<= longestLatency
; ++i
) {
151 if (activityBuffer
[-i
]) {
156 for (int i
= 0; i
< numStages
; ++i
) {
157 if (stageActive
[i
]) {
162 assert(count
== activityCount
);