{"id":181717,"date":"2026-05-25T08:49:03","date_gmt":"2026-05-25T06:49:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opendds-3-34-0"},"modified":"2026-05-25T08:49:03","modified_gmt":"2026-05-25T06:49:03","slug":"opendds-3-34-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/opendds-3-34-0","title":{"rendered":"OpenDDS 3.34.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <noindex><\/p>\n<p>The release has occurred <strong><a rel=\"nofollow\" href=\"https:\/\/opendds.org\/about\/\">OpenDDS 3.34.0<\/a><\/strong> \u2014 a free C++ implementation of the specification <strong>Object Management Group Data Distribution Service for Real-time Systems<\/strong>. DDS is used for building distributed systems based on the publish-subscribe model, and OpenDDS, in addition to C++, provides Java\/JNI bindings and relies on ACE\/TAO. The release has been published <strong>May 21, 2026<\/strong>, <a rel=\"nofollow\" href=\"https:\/\/opendds.org\/downloads.html\">precompiled archives<\/a> are available for Windows, Linux, and macOS.<\/p>\n<p><\/noindex><\/noindex><br \/>\n<noindex><\/p>\n<p><a rel=\"nofollow\" href=\"https:\/\/opendds.org\/about\/license.html\">The project is distributed<\/a> as open source: OpenDDS can be used, modified, and distributed without licensing fees while maintaining copyright notices; it is also emphasized that OpenDDS can be used in proprietary software development without the obligation to disclose one's source code.<\/p>\n<p><\/noindex><\/p>\n<p>Major changes in OpenDDS 3.34.0:<\/p>\n<ul>\n<li>\n<p><strong>Extended capabilities of RtpsRelay.<\/strong> In RtpsRelay, additional parameters can now be changed at runtime through the RtpsRelayControl mechanism. It also added the ability to specify a list of partitions that will be inaccessible to specific instances of RtpsRelay through the new topic RelayDeniedPartitions. To manage the lifetime of such restrictions, the option -DeniedPartitionsTimeout has been added.<\/p>\n<\/li>\n<li>\n<p><strong>A build mode for profiling has been added.<\/strong> The configure script has been updated with the --profiling flag, which includes typical compilation parameters for performance analysis in GCC.<\/p>\n<\/li>\n<li>\n<p><strong>Callbacks for managing OpenDDS threads have been introduced.<\/strong> Developers have added handlers that are invoked at the start and end of OpenDDS threads. This allows for controlling thread behavior, such as binding them to specific CPU cores in Linux.<\/p>\n<\/li>\n<li>\n<p><strong>Deserialization of IDL types has been optimized.<\/strong> All IDL mappings now strive to avoid unnecessary memory zeroing for sequences of primitive types during sample deserialization. For IDL-to-C++11, an explicit inclusion via @OpenDDS::no_init_before_deserialize is required.<\/p>\n<\/li>\n<li>\n<p><strong>Management of the number of EventDispatcher threads has been added.<\/strong> Parameters DCPSEventDispatcherThreads and transport setting event_dispatcher_threads are now available. When event_dispatcher_threads=0, the transport will use a shared event dispatcher instead of creating its own local dispatcher.<\/p>\n<\/li>\n<li>\n<p><strong>TCP buffer settings have been added.<\/strong> For TCP transport, parameters send_buffer_size and rcv_buffer_size have been introduced. By default, the size of socket buffers is now left to the platform's discretion if these parameters are not set to positive values.<\/p>\n<\/li>\n<li>\n<p><strong>Updated ACE\/TAO.<\/strong> The dependencies have been updated: ACE 6\/TAO 2 are upgraded from 6.5.23 to 6.5.24, and ACE 8\/TAO 4 are upgraded from 8.0.5 to 8.0.6. During the build of OpenDDS using CMake, the default version of ACE\/TAO is now ACE 8 \/ TAO 4.<\/p>\n<\/li>\n<li>\n<p><strong>The unused option RtpsRelay has been removed.<\/strong> The option -LogParticipantStatistics has been removed from RtpsRelay, as it was no longer in use.<\/p>\n<\/li>\n<li>\n<p><strong>Performance and networking fixes.<\/strong> The receive buffer size for netlink has been increased, and a significant portion of service and response tasks has been shifted from Reactor threads to the corresponding EventDispatcher threads. This should relieve Reactor threads for network reading.<\/p>\n<\/li>\n<li>\n<p><strong>Fixed bugs in ThreadStatusManager and transports.<\/strong> ThreadStatusManager now uses multiple slots with its own locks, reducing contention between threads. Fixed null pointer dereference during deserialization of DynamicData from a removed participant, as well as errors in locating transport instances and handling shared local addresses that could lead to incorrect locator values in participant and endpoint announcements.<br \/>\n&lt;&lt;&lt;&lt;<\/p>\n<\/li>\n<\/ul>\n<p><noindex><\/p>\n<p><a rel=\"nofollow\" href=\"https:\/\/opendds.readthedocs.io\/en\/master\/news.html#v3-34-0\">News on the project website<\/a><\/p>\n<p><\/noindex><\/p>\n<p>Source: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/opensource\/18299140\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 OpenDDS 3.34.0 \u2014 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 C++-\u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 Object Management Group Data Distribution Service for Real-time Systems. DDS \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043f\u043e \u043c\u043e\u0434\u0435\u043b\u0438 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u0434\u043f\u0438\u0441\u043a\u0438, \u0430 \u0441\u0430\u043c OpenDDS, \u043f\u043e\u043c\u0438\u043c\u043e C++, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 Java\/JNI-\u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0438 \u0438 \u043e\u043f\u0438\u0440\u0430\u0435\u0442\u0441\u044f \u043d\u0430 ACE\/TAO. \u0420\u0435\u043b\u0438\u0437 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d 21 \u043c\u0430\u044f 2026 \u0433\u043e\u0434\u0430, \u0433\u043e\u0442\u043e\u0432\u044b\u0435 \u0430\u0440\u0445\u0438\u0432\u044b \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u0434\u043b\u044f Windows, Linux \u0438 macOS. \u041f\u0440\u043e\u0435\u043a\u0442 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181717","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 OpenDDS 3.34.0 \u2014 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 C++-\u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 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