1 //===-- esan_flags.inc ------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Esan runtime flags. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef ESAN_FLAG 15 # error "Define ESAN_FLAG prior to including this file!" 16 #endif 17 18 // ESAN_FLAG(Type, Name, DefaultValue, Description) 19 // See COMMON_FLAG in sanitizer_flags.inc for more details. 20 21 //===----------------------------------------------------------------------===// 22 // Cross-tool options 23 //===----------------------------------------------------------------------===// 24 25 ESAN_FLAG(int, cache_line_size, 64, 26 "The number of bytes in a cache line. For the working-set tool, this " 27 "cannot be changed without also changing the compiler " 28 "instrumentation.") 29 30 //===----------------------------------------------------------------------===// 31 // Working set tool options 32 //===----------------------------------------------------------------------===// 33 34 ESAN_FLAG(bool, record_snapshots, true, 35 "Working set tool: whether to sample snapshots during a run.") 36 37 // Typical profiling uses a 10ms timer. Our snapshots take some work 38 // to scan memory so we reduce to 20ms. 39 // To disable samples, turn off record_snapshots. 40 ESAN_FLAG(int, sample_freq, 20, 41 "Working set tool: sampling frequency in milliseconds.") 42 43 // This controls the difference in frequency between each successive series 44 // of snapshots. There are 8 in total, with number 0 using sample_freq. 45 // Number N samples number N-1 every (1 << snapshot_step) instance of N-1. 46 ESAN_FLAG(int, snapshot_step, 2, "Working set tool: the log of the sampling " 47 "performed for the next-higher-frequency snapshot series.") 48 49 //===----------------------------------------------------------------------===// 50 // Cache Fragmentation tool options 51 //===----------------------------------------------------------------------===// 52 53 // The difference information of a struct is reported if the struct's difference 54 // score is greater than the report_threshold. 55 ESAN_FLAG(int, report_threshold, 1<<10, "Cache-frag tool: the struct difference" 56 " score threshold for reporting.") 57
