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| 22 | <a href="./Home">MLton 20180207</a>\r |
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| 26 | <h1>ShowProf</h1>\r |
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| 29 | <div id="preamble">\r |
| 30 | <div class="sectionbody">\r |
| 31 | <div class="paragraph"><p>If an executable is compiled for <a href="Profiling">profiling</a>, then it\r |
| 32 | accepts a special command-line runtime system argument, <span class="monospaced">show-prof</span>,\r |
| 33 | that outputs information about the source functions that are profiled.\r |
| 34 | Normally, this information is used by <span class="monospaced">mlprof</span>. This page documents\r |
| 35 | the <span class="monospaced">show-prof</span> output format, and is intended for those working on\r |
| 36 | the profiler internals.</p></div>\r |
| 37 | <div class="paragraph"><p>The <span class="monospaced">show-prof</span> output is ASCII, and consists of a sequence of lines.</p></div>\r |
| 38 | <div class="ulist"><ul>\r |
| 39 | <li>\r |
| 40 | <p>\r |
| 41 | The magic number of the executable.\r |
| 42 | </p>\r |
| 43 | </li>\r |
| 44 | <li>\r |
| 45 | <p>\r |
| 46 | The number of source names in the executable.\r |
| 47 | </p>\r |
| 48 | </li>\r |
| 49 | <li>\r |
| 50 | <p>\r |
| 51 | A line for each source name giving the name of the function, a tab,\r |
| 52 | the filename of the file containing the function, a colon, a space,\r |
| 53 | and the line number that the function starts on in that file.\r |
| 54 | </p>\r |
| 55 | </li>\r |
| 56 | <li>\r |
| 57 | <p>\r |
| 58 | The number of (split) source functions.\r |
| 59 | </p>\r |
| 60 | </li>\r |
| 61 | <li>\r |
| 62 | <p>\r |
| 63 | A line for each (split) source function, where each line consists of\r |
| 64 | a source-name index (into the array of source names) and a successors\r |
| 65 | index (into the array of split-source sequences, defined below).\r |
| 66 | </p>\r |
| 67 | </li>\r |
| 68 | <li>\r |
| 69 | <p>\r |
| 70 | The number of split-source sequences.\r |
| 71 | </p>\r |
| 72 | </li>\r |
| 73 | <li>\r |
| 74 | <p>\r |
| 75 | A line for each split-source sequence, where each line is a space\r |
| 76 | separated list of (split) source functions.\r |
| 77 | </p>\r |
| 78 | </li>\r |
| 79 | </ul></div>\r |
| 80 | <div class="paragraph"><p>The latter two arrays, split sources and split-source sequences,\r |
| 81 | define a directed graph, which is the call-graph of the program.</p></div>\r |
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