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