1 The following are examples of pl_flow.d. 2 3 This is a simple script to trace the flow of Perl subroutines (functions). 4 Here it traces the example program, Code/Perl/func_abc.pl. 5 6 # pl_flow.d 7 C TIME(us) FILE -- SUB 8 0 2979519183757 func_abc.pl -> func_a 9 0 2979520190159 func_abc.pl -> func_b 10 0 2979521200166 func_abc.pl -> func_c 11 0 2979522210184 func_abc.pl <- func_c 12 0 2979522210199 func_abc.pl <- func_b 13 0 2979522210207 func_abc.pl <- func_a 14 ^C 15 16 As each subroutine is entered, the third column is indented by 2 spaces. This 17 shows which subroutine is calling who - the output abovebegins by showing that 18 func_a() began, and then called func_b(). 19 20 If the output looks shuffled, check the CPU "C" and "TIME" columns, and 21 post sort based on TIME if necessary. 22 23 See Notes/ALLflow_notes.txt for important notes about reading flow outputs. 24 25 26 27 The following traces a Perl network interface statistics tool, "nicstat" 28 version 0.99, 29 30 # pl_flow.d 31 C TIME(us) FILE -- SUB 32 0 4181899422549 nicstat -> BEGIN 33 0 4181899423048 strict.pm -> bits 34 0 4181899423081 strict.pm <- bits 35 0 4181899423105 strict.pm -> import 36 0 4181899423126 strict.pm <- import 37 0 4181899423133 nicstat <- BEGIN 38 0 4181899423157 nicstat -> BEGIN 39 0 4181899445634 Exporter.pm -> import 40 0 4181899445730 Exporter.pm <- import 41 0 4181899445743 nicstat <- BEGIN 42 0 4181899445770 nicstat -> BEGIN 43 0 4181899446066 Kstat.pm -> BEGIN 44 0 4181899446076 strict.pm -> import 45 0 4181899446087 strict.pm <- import 46 0 4181899446094 Kstat.pm <- BEGIN 47 0 4181899446116 Kstat.pm -> BEGIN 48 0 4181899453669 DynaLoader.pm -> BEGIN 49 0 4181899453810 vars.pm -> BEGIN 50 0 4181899453821 vars.pm <- BEGIN 51 0 4181899453921 vars.pm -> BEGIN 52 0 4181899454494 warnings.pm -> BEGIN 53 0 4181899455149 warnings.pm <- BEGIN 54 0 4181899457183 register.pm -> import 55 0 4181899457202 register.pm -> mkMask 56 0 4181899457214 register.pm <- mkMask 57 0 4181899457264 register.pm -> mkMask 58 0 4181899457274 register.pm <- mkMask 59 0 4181899457283 register.pm <- import 60 0 4181899457290 vars.pm <- BEGIN 61 0 4181899457316 vars.pm -> BEGIN 62 0 4181899457324 strict.pm -> import 63 0 4181899457332 strict.pm -> bits 64 0 4181899457345 strict.pm <- bits 65 0 4181899457353 strict.pm <- import 66 0 4181899457359 vars.pm <- BEGIN 67 0 4181899457652 vars.pm -> import 68 0 4181899457703 vars.pm <- import 69 0 4181899457710 DynaLoader.pm <- BEGIN 70 0 4181899457758 DynaLoader.pm -> BEGIN 71 0 4181899457883 Config.pm -> BEGIN 72 0 4181899457890 strict.pm -> import 73 0 4181899457899 strict.pm <- import 74 0 4181899457906 Config.pm <- BEGIN 75 0 4181899458038 Config.pm -> BEGIN 76 0 4181899458045 strict.pm -> unimport 77 0 4181899458053 strict.pm -> bits 78 0 4181899458063 strict.pm <- bits 79 0 4181899458077 strict.pm <- unimport 80 0 4181899458084 Config.pm <- BEGIN 81 0 4181899458426 Config.pm -> TIEHASH 82 0 4181899458435 Config.pm <- TIEHASH 83 0 4181899458476 Config.pm -> import 84 0 4181899458493 Config.pm <- import 85 0 4181899458500 DynaLoader.pm <- BEGIN 86 0 4181899459978 AutoLoader.pm -> BEGIN 87 0 4181899459990 strict.pm -> import 88 0 4181899460033 strict.pm <- import 89 0 4181899460064 AutoLoader.pm <- BEGIN 90 0 4181899460088 AutoLoader.pm -> BEGIN 91 0 4181899460096 AutoLoader.pm <- BEGIN 92 0 4181899460187 AutoLoader.pm -> BEGIN 93 0 4181899460199 AutoLoader.pm <- BEGIN 94 0 4181899460582 AutoLoader.pm -> BEGIN 95 0 4181899460590 strict.pm -> unimport 96 0 4181899460598 strict.pm -> bits 97 0 4181899460611 strict.pm <- bits 98 0 4181899460619 strict.pm <- unimport 99 0 4181899460625 AutoLoader.pm <- BEGIN 100 0 4181899460830 AutoLoader.pm -> BEGIN 101 0 4181899460838 strict.pm -> unimport 102 0 4181899460845 strict.pm -> bits 103 0 4181899460855 strict.pm <- bits 104 0 4181899460862 strict.pm <- unimport 105 0 4181899460869 AutoLoader.pm <- BEGIN 106 0 4181899461092 AutoLoader.pm -> BEGIN 107 0 4181899461100 strict.pm -> unimport 108 0 4181899461107 strict.pm -> bits 109 0 4181899461116 strict.pm <- bits 110 0 4181899461124 strict.pm <- unimport 111 0 4181899461130 AutoLoader.pm <- BEGIN 112 0 4181899461238 Config.pm -> FETCH 113 0 4181899461250 Config.pm <- FETCH 114 0 4181899461264 Config.pm -> FETCH 115 0 4181899461272 Config.pm <- FETCH 116 0 4181899461282 Config.pm -> FETCH 117 0 4181899461290 Config.pm <- FETCH 118 0 4181899461299 Config.pm -> FETCH 119 0 4181899461307 Config.pm <- FETCH 120 0 4181899461403 Kstat.pm <- BEGIN 121 0 4181899461432 Kstat.pm -> BEGIN 122 0 4181899461440 vars.pm -> import 123 0 4181899461476 vars.pm <- import 124 0 4181899461483 Kstat.pm <- BEGIN 125 0 4181899461539 DynaLoader.pm -> bootstrap 126 0 4181899461769 DynaLoader.pm -> dl_load_flags 127 0 4181899461777 DynaLoader.pm <- dl_load_flags 128 0 4181899462208 DynaLoader.pm <- bootstrap 129 0 4181899462231 nicstat <- BEGIN 130 0 4181899468306 Std.pm -> getopts 131 0 4181899468351 Exporter.pm -> import 132 0 4181899468390 Exporter.pm <- import 133 0 4181899468405 Std.pm <- getopts 134 0 4181899468426 nicstat -> find_nets 135 0 4181899521011 nicstat <- find_nets 136 0 4181899521415 nicstat -> fetch_net_data 137 0 4181899564973 nicstat <- fetch_net_data 138 0 4181899565526 nicstat -> print_neat 139 0 4181899565672 nicstat <- print_neat 140 0 4181899565680 nicstat -> print_neat 141 0 4181899565902 nicstat <- print_neat 142 0 4181899565909 nicstat -> print_neat 143 0 4181899566033 nicstat <- print_neat 144 0 4181899566039 nicstat -> print_neat 145 0 4181899566165 nicstat <- print_neat 146 0 4181899566172 nicstat -> print_neat 147 0 4181899566331 nicstat <- print_neat 148 0 4181899566338 nicstat -> print_neat 149 0 4181899566494 nicstat <- print_neat 150 0 4181899566791 nicstat -> print_neat 151 0 4181899566953 nicstat <- print_neat 152 0 4181899566961 nicstat -> print_neat 153 0 4181899567085 nicstat <- print_neat 154 0 4181899567091 nicstat -> print_neat 155 0 4181899567247 nicstat <- print_neat 156 0 4181899567254 nicstat -> print_neat 157 0 4181899567377 nicstat <- print_neat 158 0 4181899567383 nicstat -> print_neat 159 0 4181899567538 nicstat <- print_neat 160 0 4181899567544 nicstat -> print_neat 161 0 4181899567666 nicstat <- print_neat 162 0 4181899567977 nicstat -> print_neat 163 0 4181899568232 nicstat <- print_neat 164 0 4181899568240 nicstat -> print_neat 165 0 4181899568397 nicstat <- print_neat 166 0 4181899568404 nicstat -> print_neat 167 0 4181899568528 nicstat <- print_neat 168 0 4181899568535 nicstat -> print_neat 169 0 4181899568656 nicstat <- print_neat 170 0 4181899568663 nicstat -> print_neat 171 0 4181899568819 nicstat <- print_neat 172 0 4181899568826 nicstat -> print_neat 173 0 4181899568947 nicstat <- print_neat 174 0 4181899572708 Config.pm -> DESTROY 175 0 4181899572735 Config.pm <- DESTROY 176 177 After initialising Perl libraries and modules, the "nicstat" program ran, 178 the output matching what was expected from the source. 179 180
Indexes created Wed Apr 22 00:22:44 UTC 2026