1 /** 2 * @file op_parse_event.c 3 * event parsing 4 * 5 * You can have silliness here. 6 * 7 * @remark Copyright 2002 OProfile authors 8 * @remark Read the file COPYING 9 * 10 * @author John Levon 11 * @author Philippe Elie 12 */ 13 14 #include <stdio.h> 15 #include <stdlib.h> 16 17 #include "op_parse_event.h" 18 #include "op_string.h" 19 20 static char * next_part(char const ** str) 21 { 22 char const * c; 23 char * ret; 24 25 if ((*str)[0] == '\0') 26 return NULL; 27 28 if ((*str)[0] == ':') 29 ++(*str); 30 31 c = *str; 32 33 while (*c != '\0' && *c != ':') 34 ++c; 35 36 if (c == *str) 37 return NULL; 38 39 ret = op_xstrndup(*str, c - *str); 40 *str += c - *str; 41 return ret; 42 } 43 44 45 static int parse_ulong(char const * str) 46 { 47 unsigned long value; 48 char * end; 49 value = strtoul(str, &end, 0); 50 if (end && *end) { 51 fprintf(stderr, "Invalid event part %s\n", str); 52 exit(EXIT_FAILURE); 53 } 54 55 return value; 56 } 57 58 59 size_t parse_events(struct parsed_event * parsed_events, size_t max_events, 60 char const * const * events) 61 { 62 size_t i = 0; 63 64 while (events[i]) { 65 char const * cp = events[i]; 66 char * part = next_part(&cp); 67 68 if (i >= max_events) { 69 fprintf(stderr, "Too many events specified: CPU " 70 "only has %lu counters.\n", 71 (unsigned long) max_events); 72 exit(EXIT_FAILURE); 73 } 74 75 if (!part) { 76 fprintf(stderr, "Invalid event %s\n", cp); 77 exit(EXIT_FAILURE); 78 } 79 80 parsed_events[i].name = part; 81 82 part = next_part(&cp); 83 84 if (!part) { 85 fprintf(stderr, "Invalid count for event %s\n", events[i]); 86 exit(EXIT_FAILURE); 87 } 88 89 parsed_events[i].count = parse_ulong(part); 90 free(part); 91 92 parsed_events[i].unit_mask = 0; 93 part = next_part(&cp); 94 95 if (part) { 96 parsed_events[i].unit_mask_valid = 1; 97 parsed_events[i].unit_mask = parse_ulong(part); 98 free(part); 99 } 100 101 parsed_events[i].kernel = 1; 102 part = next_part(&cp); 103 104 if (part) { 105 parsed_events[i].kernel = parse_ulong(part); 106 free(part); 107 } 108 109 parsed_events[i].user = 1; 110 part = next_part(&cp); 111 112 if (part) { 113 parsed_events[i].user = parse_ulong(part); 114 free(part); 115 } 116 117 ++i; 118 } 119 120 return i; 121 } 122
