1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <inttypes.h> 4 #include "trace_reader.h" 5 6 static const int kMaxHistEntries = 256; 7 static const int kMaxHistEntries2 = kMaxHistEntries / 2; 8 int hist[kMaxHistEntries]; 9 int underflow, overflow; 10 11 int main(int argc, char **argv) { 12 if (argc != 2) { 13 fprintf(stderr, "Usage: %s trace_file\n", argv[0]); 14 exit(1); 15 } 16 17 char *trace_filename = argv[1]; 18 TraceReaderBase *trace = new TraceReaderBase; 19 trace->Open(trace_filename); 20 21 uint64_t prev_bb_num = 0; 22 uint64_t prev_time = 0; 23 int total = 0; 24 25 while (1) { 26 BBEvent event; 27 28 if (trace->ReadBB(&event)) 29 break; 30 int bb_diff = event.bb_num - prev_bb_num; 31 //int time_diff = event.time - prev_time; 32 //printf("bb_num: %llu prev: %llu, diff: %d\n", 33 // event.bb_num, prev_bb_num, bb_diff); 34 prev_bb_num = event.bb_num; 35 prev_time = event.time; 36 37 bb_diff += kMaxHistEntries2; 38 if (bb_diff < 0) 39 underflow += 1; 40 else if (bb_diff >= kMaxHistEntries) 41 overflow += 1; 42 else 43 hist[bb_diff] += 1; 44 total += 1; 45 } 46 47 int sum = 0; 48 double sum_per = 0; 49 double per = 0; 50 for (int ii = 0; ii < kMaxHistEntries; ++ii) { 51 if (hist[ii] == 0) 52 continue; 53 per = 100.0 * hist[ii] / total; 54 sum += hist[ii]; 55 sum_per = 100.0 * sum / total; 56 printf(" %4d: %6d %6.2f %6.2f\n", ii - kMaxHistEntries2, hist[ii], per, sum_per); 57 } 58 per = 100.0 * underflow / total; 59 printf("under: %6d %6.2f\n", underflow, per); 60 per = 100.0 * overflow / total; 61 printf("over: %6d %6.2f\n", overflow, per); 62 printf("total: %6d\n", total); 63 return 0; 64 } 65
