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* Move the project top-level CMakeLists.txt to the root of the project;
  this allows building Cyclone as part of ROS2 without any special
  tricks;

* Clean up the build options:

  ENABLE_SSL:    whether to check for and include OpenSSL support if a
                 library can be found (default = ON); this used to be
                 called DDSC_ENABLE_OPENSSL, the old name is deprecated
                 but still works
  BUILD_DOCS:    whether to build docs (default = OFF)
  BUILD_TESTING: whether to build test (default = OFF)

* Collect all documentation into top-level "docs" directory;

* Move the examples to the top-level directory;

* Remove the unused and somewhat misleading pseudo-default
  cyclonedds.xml;

* Remove unused cmake files

Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2019-07-26 09:43:53 +02:00 • committed by eboasson
parent 4e80559763
commit 9cf4b97f1a
102 changed files with 627 additions and 1925 deletions
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84
examples/helloworld/subscriber.c Normal file
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#include "dds/dds.h"
#include "HelloWorldData.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/* An array of one message (aka sample in dds terms) will be used. */
#define MAX_SAMPLES 1
int main (int argc, char ** argv)
{
dds_entity_t participant;
dds_entity_t topic;
dds_entity_t reader;
HelloWorldData_Msg *msg;
void *samples[MAX_SAMPLES];
dds_sample_info_t infos[MAX_SAMPLES];
dds_return_t rc;
dds_qos_t *qos;
(void)argc;
(void)argv;
/* Create a Participant. */
participant = dds_create_participant (DDS_DOMAIN_DEFAULT, NULL, NULL);
if (participant < 0)
DDS_FATAL("dds_create_participant: %s\n", dds_strretcode(-participant));
/* Create a Topic. */
topic = dds_create_topic (
participant, &HelloWorldData_Msg_desc, "HelloWorldData_Msg", NULL, NULL);
if (topic < 0)
DDS_FATAL("dds_create_topic: %s\n", dds_strretcode(-topic));
/* Create a reliable Reader. */
qos = dds_create_qos ();
dds_qset_reliability (qos, DDS_RELIABILITY_RELIABLE, DDS_SECS (10));
reader = dds_create_reader (participant, topic, qos, NULL);
if (reader < 0)
DDS_FATAL("dds_create_reader: %s\n", dds_strretcode(-reader));
dds_delete_qos(qos);
printf ("\n=== [Subscriber] Waiting for a sample ...\n");
fflush (stdout);
/* Initialize sample buffer, by pointing the void pointer within
* the buffer array to a valid sample memory location. */
samples[0] = HelloWorldData_Msg__alloc ();
/* Poll until data has been read. */
while (true)
{
/* Do the actual read.
* The return value contains the number of read samples. */
rc = dds_read (reader, samples, infos, MAX_SAMPLES, MAX_SAMPLES);
if (rc < 0)
DDS_FATAL("dds_read: %s\n", dds_strretcode(-rc));
/* Check if we read some data and it is valid. */
if ((rc > 0) && (infos[0].valid_data))
{
/* Print Message. */
msg = (HelloWorldData_Msg*) samples[0];
printf ("=== [Subscriber] Received : ");
printf ("Message (%"PRId32", %s)\n", msg->userID, msg->message);
fflush (stdout);
break;
}
else
{
/* Polling sleep. */
dds_sleepfor (DDS_MSECS (20));
}
}
/* Free the data location. */
HelloWorldData_Msg_free (samples[0], DDS_FREE_ALL);
/* Deleting the participant will delete all its children recursively as well. */
rc = dds_delete (participant);
if (rc != DDS_RETCODE_OK)
DDS_FATAL("dds_delete: %s\n", dds_strretcode(-rc));
return EXIT_SUCCESS;
}