activity.cc revision 2325
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