tests/compile/test-app-ctx/hello.c

   1 /*
   2  * SPDX-License-Identifier: LGPL-2.1-only
   3  *
   4  * Copyright (C) 2009 Pierre-Marc Fournier
   5  * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  */
   7
   8 #include <fcntl.h>
   9 #include <signal.h>
  10 #include <stdarg.h>
  11 #include <stdint.h>
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include <sys/mman.h>
  15 #include <sys/stat.h>
  16 #include <sys/types.h>
  17 #include <unistd.h>
  18 /*
  19  * Work-around inet.h missing struct mmsghdr forward declaration, with
  20  * triggers a warning when system files warnings are enabled.
  21  */
  22 struct mmsghdr;
  23 #include <arpa/inet.h>
  24 #include <stddef.h>
  25 #include <stdlib.h>
  26 #include <stdbool.h>
  27
  28 #define TRACEPOINT_DEFINE
  29 #include "ust_tests_hello.h"
  30
  31 /* Internal header. */
  32 #include <lttng/ust-events.h>
  33 #include <lttng/ringbuffer-config.h>
  34 #include <lttng/ust-context-provider.h>
  35
  36 static __thread unsigned int test_count;
  37
  38 void test_inc_count(void)
  39 {
  40         test_count++;
  41 }
  42
  43 static
  44 size_t test_get_size(struct lttng_ctx_field *field, size_t offset)
  45 {
  46         int sel = test_count % _NR_LTTNG_UST_DYNAMIC_TYPES;
  47         size_t size = 0;
  48
  49         size += lib_ring_buffer_align(offset, lttng_alignof(char));
  50         size += sizeof(char);           /* tag */
  51         switch (sel) {
  52         case LTTNG_UST_DYNAMIC_TYPE_NONE:
  53                 break;
  54         case LTTNG_UST_DYNAMIC_TYPE_S8:
  55                 size += lib_ring_buffer_align(offset, lttng_alignof(int8_t));
  56                 size += sizeof(int8_t);         /* variant */
  57                 break;
  58         case LTTNG_UST_DYNAMIC_TYPE_S16:
  59                 size += lib_ring_buffer_align(offset, lttng_alignof(int16_t));
  60                 size += sizeof(int16_t);        /* variant */
  61                 break;
  62         case LTTNG_UST_DYNAMIC_TYPE_S32:
  63                 size += lib_ring_buffer_align(offset, lttng_alignof(int32_t));
  64                 size += sizeof(int32_t);        /* variant */
  65                 break;
  66         case LTTNG_UST_DYNAMIC_TYPE_S64:
  67                 size += lib_ring_buffer_align(offset, lttng_alignof(int64_t));
  68                 size += sizeof(int64_t);        /* variant */
  69                 break;
  70         case LTTNG_UST_DYNAMIC_TYPE_U8:
  71                 size += lib_ring_buffer_align(offset, lttng_alignof(uint8_t));
  72                 size += sizeof(uint8_t);                /* variant */
  73                 break;
  74         case LTTNG_UST_DYNAMIC_TYPE_U16:
  75                 size += lib_ring_buffer_align(offset, lttng_alignof(uint16_t));
  76                 size += sizeof(uint16_t);       /* variant */
  77                 break;
  78         case LTTNG_UST_DYNAMIC_TYPE_U32:
  79                 size += lib_ring_buffer_align(offset, lttng_alignof(uint32_t));
  80                 size += sizeof(uint32_t);       /* variant */
  81                 break;
  82         case LTTNG_UST_DYNAMIC_TYPE_U64:
  83                 size += lib_ring_buffer_align(offset, lttng_alignof(uint64_t));
  84                 size += sizeof(uint64_t);       /* variant */
  85                 break;
  86         case LTTNG_UST_DYNAMIC_TYPE_FLOAT:
  87                 size += lib_ring_buffer_align(offset, lttng_alignof(float));
  88                 size += sizeof(float);          /* variant */
  89                 break;
  90         case LTTNG_UST_DYNAMIC_TYPE_DOUBLE:
  91                 size += lib_ring_buffer_align(offset, lttng_alignof(double));
  92                 size += sizeof(double);         /* variant */
  93                 break;
  94         case LTTNG_UST_DYNAMIC_TYPE_STRING:
  95                 size += strlen("teststr") + 1;
  96                 break;
  97         default:
  98                 abort();
  99         }
 100
 101         return size;
 102 }
 103
 104 static
 105 void test_record(struct lttng_ctx_field *field,
 106                  struct lttng_ust_lib_ring_buffer_ctx *ctx,
 107                  struct lttng_channel *chan)
 108 {
 109         int sel = test_count % _NR_LTTNG_UST_DYNAMIC_TYPES;
 110         char sel_char = (char) sel;
 111
 112         lib_ring_buffer_align_ctx(ctx, lttng_alignof(char));
 113         chan->ops->event_write(ctx, &sel_char, sizeof(sel_char));
 114         switch (sel) {
 115         case LTTNG_UST_DYNAMIC_TYPE_NONE:
 116                 break;
 117         case LTTNG_UST_DYNAMIC_TYPE_S8:
 118         {
 119                 int8_t v = -8;
 120
 121                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 122                 chan->ops->event_write(ctx, &v, sizeof(v));
 123                 break;
 124         }
 125         case LTTNG_UST_DYNAMIC_TYPE_S16:
 126         {
 127                 int16_t v = -16;
 128
 129                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 130                 chan->ops->event_write(ctx, &v, sizeof(v));
 131                 break;
 132         }
 133         case LTTNG_UST_DYNAMIC_TYPE_S32:
 134         {
 135                 int32_t v = -32;
 136
 137                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 138                 chan->ops->event_write(ctx, &v, sizeof(v));
 139                 break;
 140         }
 141         case LTTNG_UST_DYNAMIC_TYPE_S64:
 142         {
 143                 int64_t v = -64;
 144
 145                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 146                 chan->ops->event_write(ctx, &v, sizeof(v));
 147                 break;
 148         }
 149         case LTTNG_UST_DYNAMIC_TYPE_U8:
 150         {
 151                 uint8_t v = 8;
 152
 153                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 154                 chan->ops->event_write(ctx, &v, sizeof(v));
 155                 break;
 156         }
 157         case LTTNG_UST_DYNAMIC_TYPE_U16:
 158         {
 159                 uint16_t v = 16;
 160
 161                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 162                 chan->ops->event_write(ctx, &v, sizeof(v));
 163                 break;
 164         }
 165         case LTTNG_UST_DYNAMIC_TYPE_U32:
 166         {
 167                 uint32_t v = 32;
 168
 169                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 170                 chan->ops->event_write(ctx, &v, sizeof(v));
 171                 break;
 172         }
 173         case LTTNG_UST_DYNAMIC_TYPE_U64:
 174         {
 175                 uint64_t v = 64;
 176
 177                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(v));
 178                 chan->ops->event_write(ctx, &v, sizeof(v));
 179                 break;
 180         }
 181         case LTTNG_UST_DYNAMIC_TYPE_FLOAT:
 182         {
 183                 float f = 22322.0;
 184
 185                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(f));
 186                 chan->ops->event_write(ctx, &f, sizeof(f));
 187                 break;
 188         }
 189         case LTTNG_UST_DYNAMIC_TYPE_DOUBLE:
 190         {
 191                 double d = 2.0;
 192
 193                 lib_ring_buffer_align_ctx(ctx, lttng_alignof(d));
 194                 chan->ops->event_write(ctx, &d, sizeof(d));
 195                 break;
 196         }
 197         case LTTNG_UST_DYNAMIC_TYPE_STRING:
 198         {
 199                 const char *str = "teststr";
 200                 chan->ops->event_write(ctx, str, strlen(str) + 1);
 201                 break;
 202         }
 203         default:
 204                 abort();
 205         }
 206 }
 207
 208 static
 209 void test_get_value(struct lttng_ctx_field *field,
 210                 struct lttng_ctx_value *value)
 211 {
 212         int sel = test_count % _NR_LTTNG_UST_DYNAMIC_TYPES;
 213
 214         value->sel = sel;
 215         switch (sel) {
 216         case LTTNG_UST_DYNAMIC_TYPE_NONE:
 217                 break;
 218         case LTTNG_UST_DYNAMIC_TYPE_S8:
 219                 value->u.s64 = -8;
 220                 break;
 221         case LTTNG_UST_DYNAMIC_TYPE_S16:
 222                 value->u.s64 = -16;
 223                 break;
 224         case LTTNG_UST_DYNAMIC_TYPE_S32:
 225                 value->u.s64 = -32;
 226                 break;
 227         case LTTNG_UST_DYNAMIC_TYPE_S64:
 228                 value->u.s64 = -64;
 229                 break;
 230         case LTTNG_UST_DYNAMIC_TYPE_U8:
 231                 value->u.u64 = 8;
 232                 break;
 233         case LTTNG_UST_DYNAMIC_TYPE_U16:
 234                 value->u.u64 = 16;
 235                 break;
 236         case LTTNG_UST_DYNAMIC_TYPE_U32:
 237                 value->u.u64 = 32;
 238                 break;
 239         case LTTNG_UST_DYNAMIC_TYPE_U64:
 240                 value->u.u64 = 64;
 241                 break;
 242         case LTTNG_UST_DYNAMIC_TYPE_FLOAT:
 243                 value->u.d = 22322.0;
 244                 break;
 245         case LTTNG_UST_DYNAMIC_TYPE_DOUBLE:
 246                 value->u.d = 2.0;
 247                 break;
 248         case LTTNG_UST_DYNAMIC_TYPE_STRING:
 249                 value->u.str = "teststr";
 250                 break;
 251         default:
 252                 abort();
 253         }
 254 }
 255
 256 struct lttng_ust_context_provider myprovider = {
 257         .name = "$app.myprovider",
 258         .get_size = test_get_size,
 259         .record = test_record,
 260         .get_value = test_get_value,
 261 };
 262
 263 void inthandler(int sig)
 264 {
 265         printf("in SIGUSR1 handler\n");
 266         tracepoint(ust_tests_hello, tptest_sighandler);
 267 }
 268
 269 int init_int_handler(void)
 270 {
 271         int result;
 272         struct sigaction act;
 273
 274         memset(&act, 0, sizeof(act));
 275         result = sigemptyset(&act.sa_mask);
 276         if (result == -1) {
 277                 perror("sigemptyset");
 278                 return -1;
 279         }
 280
 281         act.sa_handler = inthandler;
 282         act.sa_flags = SA_RESTART;
 283
 284         /* Only defer ourselves. Also, try to restart interrupted
 285          * syscalls to disturb the traced program as little as possible.
 286          */
 287         result = sigaction(SIGUSR1, &act, NULL);
 288         if (result == -1) {
 289                 perror("sigaction");
 290                 return -1;
 291         }
 292
 293         return 0;
 294 }
 295
 296 void test_inc_count(void);
 297
 298 int main(int argc, char **argv)
 299 {
 300         int i, netint;
 301         long values[] = { 1, 2, 3 };
 302         char text[10] = "test";
 303         double dbl = 2.0;
 304         float flt = 2222.0;
 305         int delay = 0;
 306         bool mybool = 123;      /* should print "1" */
 307
 308         init_int_handler();
 309
 310         if (argc == 2)
 311                 delay = atoi(argv[1]);
 312
 313         if (lttng_ust_context_provider_register(&myprovider))
 314                 abort();
 315
 316         fprintf(stderr, "Hello, World!\n");
 317
 318         sleep(delay);
 319
 320         fprintf(stderr, "Tracing... ");
 321         for (i = 0; i < 1000000; i++) {
 322                 netint = htonl(i);
 323                 tracepoint(ust_tests_hello, tptest, i, netint, values,
 324                            text, strlen(text), dbl, flt, mybool);
 325                 test_inc_count();
 326                 //usleep(100000);
 327         }
 328         lttng_ust_context_provider_unregister(&myprovider);
 329         fprintf(stderr, " done.\n");
 330         return 0;
 331 }