kernel/tools/perf/util/values.c

   1 #include <stdlib.h>
   2
   3 #include "util.h"
   4 #include "values.h"
   5
   6 void perf_read_values_init(struct perf_read_values *values)
   7 {
   8         values->threads_max = 16;
   9         values->pid = malloc(values->threads_max * sizeof(*values->pid));
  10         values->tid = malloc(values->threads_max * sizeof(*values->tid));
  11         values->value = malloc(values->threads_max * sizeof(*values->value));
  12         if (!values->pid || !values->tid || !values->value)
  13                 die("failed to allocate read_values threads arrays");
  14         values->threads = 0;
  15
  16         values->counters_max = 16;
  17         values->counterrawid = malloc(values->counters_max
  18                                       * sizeof(*values->counterrawid));
  19         values->countername = malloc(values->counters_max
  20                                      * sizeof(*values->countername));
  21         if (!values->counterrawid || !values->countername)
  22                 die("failed to allocate read_values counters arrays");
  23         values->counters = 0;
  24 }
  25
  26 void perf_read_values_destroy(struct perf_read_values *values)
  27 {
  28         int i;
  29
  30         if (!values->threads_max || !values->counters_max)
  31                 return;
  32
  33         for (i = 0; i < values->threads; i++)
  34                 zfree(&values->value[i]);
  35         zfree(&values->value);
  36         zfree(&values->pid);
  37         zfree(&values->tid);
  38         zfree(&values->counterrawid);
  39         for (i = 0; i < values->counters; i++)
  40                 zfree(&values->countername[i]);
  41         zfree(&values->countername);
  42 }
  43
  44 static void perf_read_values__enlarge_threads(struct perf_read_values *values)
  45 {
  46         values->threads_max *= 2;
  47         values->pid = realloc(values->pid,
  48                               values->threads_max * sizeof(*values->pid));
  49         values->tid = realloc(values->tid,
  50                               values->threads_max * sizeof(*values->tid));
  51         values->value = realloc(values->value,
  52                                 values->threads_max * sizeof(*values->value));
  53         if (!values->pid || !values->tid || !values->value)
  54                 die("failed to enlarge read_values threads arrays");
  55 }
  56
  57 static int perf_read_values__findnew_thread(struct perf_read_values *values,
  58                                             u32 pid, u32 tid)
  59 {
  60         int i;
  61
  62         for (i = 0; i < values->threads; i++)
  63                 if (values->pid[i] == pid && values->tid[i] == tid)
  64                         return i;
  65
  66         if (values->threads == values->threads_max)
  67                 perf_read_values__enlarge_threads(values);
  68
  69         i = values->threads++;
  70         values->pid[i] = pid;
  71         values->tid[i] = tid;
  72         values->value[i] = malloc(values->counters_max * sizeof(**values->value));
  73         if (!values->value[i])
  74                 die("failed to allocate read_values counters array");
  75
  76         return i;
  77 }
  78
  79 static void perf_read_values__enlarge_counters(struct perf_read_values *values)
  80 {
  81         int i;
  82
  83         values->counters_max *= 2;
  84         values->counterrawid = realloc(values->counterrawid,
  85                                        values->counters_max * sizeof(*values->counterrawid));
  86         values->countername = realloc(values->countername,
  87                                       values->counters_max * sizeof(*values->countername));
  88         if (!values->counterrawid || !values->countername)
  89                 die("failed to enlarge read_values counters arrays");
  90
  91         for (i = 0; i < values->threads; i++) {
  92                 values->value[i] = realloc(values->value[i],
  93                                            values->counters_max * sizeof(**values->value));
  94                 if (!values->value[i])
  95                         die("failed to enlarge read_values counters arrays");
  96         }
  97 }
  98
  99 static int perf_read_values__findnew_counter(struct perf_read_values *values,
 100                                              u64 rawid, const char *name)
 101 {
 102         int i;
 103
 104         for (i = 0; i < values->counters; i++)
 105                 if (values->counterrawid[i] == rawid)
 106                         return i;
 107
 108         if (values->counters == values->counters_max)
 109                 perf_read_values__enlarge_counters(values);
 110
 111         i = values->counters++;
 112         values->counterrawid[i] = rawid;
 113         values->countername[i] = strdup(name);
 114
 115         return i;
 116 }
 117
 118 void perf_read_values_add_value(struct perf_read_values *values,
 119                                 u32 pid, u32 tid,
 120                                 u64 rawid, const char *name, u64 value)
 121 {
 122         int tindex, cindex;
 123
 124         tindex = perf_read_values__findnew_thread(values, pid, tid);
 125         cindex = perf_read_values__findnew_counter(values, rawid, name);
 126
 127         values->value[tindex][cindex] = value;
 128 }
 129
 130 static void perf_read_values__display_pretty(FILE *fp,
 131                                              struct perf_read_values *values)
 132 {
 133         int i, j;
 134         int pidwidth, tidwidth;
 135         int *counterwidth;
 136
 137         counterwidth = malloc(values->counters * sizeof(*counterwidth));
 138         if (!counterwidth)
 139                 die("failed to allocate counterwidth array");
 140         tidwidth = 3;
 141         pidwidth = 3;
 142         for (j = 0; j < values->counters; j++)
 143                 counterwidth[j] = strlen(values->countername[j]);
 144         for (i = 0; i < values->threads; i++) {
 145                 int width;
 146
 147                 width = snprintf(NULL, 0, "%d", values->pid[i]);
 148                 if (width > pidwidth)
 149                         pidwidth = width;
 150                 width = snprintf(NULL, 0, "%d", values->tid[i]);
 151                 if (width > tidwidth)
 152                         tidwidth = width;
 153                 for (j = 0; j < values->counters; j++) {
 154                         width = snprintf(NULL, 0, "%" PRIu64, values->value[i][j]);
 155                         if (width > counterwidth[j])
 156                                 counterwidth[j] = width;
 157                 }
 158         }
 159
 160         fprintf(fp, "# %*s  %*s", pidwidth, "PID", tidwidth, "TID");
 161         for (j = 0; j < values->counters; j++)
 162                 fprintf(fp, "  %*s", counterwidth[j], values->countername[j]);
 163         fprintf(fp, "\n");
 164
 165         for (i = 0; i < values->threads; i++) {
 166                 fprintf(fp, "  %*d  %*d", pidwidth, values->pid[i],
 167                         tidwidth, values->tid[i]);
 168                 for (j = 0; j < values->counters; j++)
 169                         fprintf(fp, "  %*" PRIu64,
 170                                 counterwidth[j], values->value[i][j]);
 171                 fprintf(fp, "\n");
 172         }
 173         free(counterwidth);
 174 }
 175
 176 static void perf_read_values__display_raw(FILE *fp,
 177                                           struct perf_read_values *values)
 178 {
 179         int width, pidwidth, tidwidth, namewidth, rawwidth, countwidth;
 180         int i, j;
 181
 182         tidwidth = 3; /* TID */
 183         pidwidth = 3; /* PID */
 184         namewidth = 4; /* "Name" */
 185         rawwidth = 3; /* "Raw" */
 186         countwidth = 5; /* "Count" */
 187
 188         for (i = 0; i < values->threads; i++) {
 189                 width = snprintf(NULL, 0, "%d", values->pid[i]);
 190                 if (width > pidwidth)
 191                         pidwidth = width;
 192                 width = snprintf(NULL, 0, "%d", values->tid[i]);
 193                 if (width > tidwidth)
 194                         tidwidth = width;
 195         }
 196         for (j = 0; j < values->counters; j++) {
 197                 width = strlen(values->countername[j]);
 198                 if (width > namewidth)
 199                         namewidth = width;
 200                 width = snprintf(NULL, 0, "%" PRIx64, values->counterrawid[j]);
 201                 if (width > rawwidth)
 202                         rawwidth = width;
 203         }
 204         for (i = 0; i < values->threads; i++) {
 205                 for (j = 0; j < values->counters; j++) {
 206                         width = snprintf(NULL, 0, "%" PRIu64, values->value[i][j]);
 207                         if (width > countwidth)
 208                                 countwidth = width;
 209                 }
 210         }
 211
 212         fprintf(fp, "# %*s  %*s  %*s  %*s  %*s\n",
 213                 pidwidth, "PID", tidwidth, "TID",
 214                 namewidth, "Name", rawwidth, "Raw",
 215                 countwidth, "Count");
 216         for (i = 0; i < values->threads; i++)
 217                 for (j = 0; j < values->counters; j++)
 218                         fprintf(fp, "  %*d  %*d  %*s  %*" PRIx64 "  %*" PRIu64,
 219                                 pidwidth, values->pid[i],
 220                                 tidwidth, values->tid[i],
 221                                 namewidth, values->countername[j],
 222                                 rawwidth, values->counterrawid[j],
 223                                 countwidth, values->value[i][j]);
 224 }
 225
 226 void perf_read_values_display(FILE *fp, struct perf_read_values *values, int raw)
 227 {
 228         if (raw)
 229                 perf_read_values__display_raw(fp, values);
 230         else
 231                 perf_read_values__display_pretty(fp, values);
 232 }