Ocean is a general purpose library, compatible with both D1 and D2, with a focus on supporting the development of high-performance, real-time applications. This focus has led to several noteworthy design choices:
- Ocean is not cross-platform. The only supported platform is Linux.
- Ocean assumes a single-threaded environment. Fiber-based multi-tasking is favoured, internally.
- Ocean aims to minimise use of the D garbage collector. GC collect cycles can be very disruptive to real-time applications, so Ocean favours a model of allocating resources once then reusing them, wherever possible.
Ocean began life as an extension of Tango, some elements of which were eventually merged into Ocean.
As an important note, we want to emphasize this is a preview release, in the sense that the main development of this library will still be conducted internally at Sociomantic in a private repository, and we'll only synchronize it when we do new releases. This is because we are still lacking the needed infrastructure to do all the development in the wild (most notably automatic testing).
We want to switch to a completely public development model, but when this will happen is still uncertain (although we hope soon).
That said, we welcome pull requests and issues, we'll see how to deal with this duality when the time comes, but we are definitely willing to accept contributions.
This library has quite a few number of dependencies, but it depends on which modules you want to use. Usually the easiest way to find out is just using it and see which libraries the linker fails to find and then install by demand.
If you want to install everything, then the list is as follows (for an
absolutely up to date list you can take a look at the Build.mak file, in
the $O/%unittests target):
-lglib-2.0-lpcre-lxml2-lxslt-lebtree-lreadline-lhistory-llzo2-lbz2-lz-ldl-lgcrypt-lgpg-error-lrt
Please note that ebtree is not the vanilla upstream version. We created our
own fork of it to be able to write D bindings more easily. You can find the
needed ebtree library in https://github.com/sociomantic-tsunami/ebtree/releases
(look only for the v6.0.socioX releases, some pre-built Ubuntu packages are
provided).
If you plan to use the provided Makefile (you need it to convert code to
D2, or to run the tests), you need to also checkout the submodules with git
submodule update --init. This will fetch the Makd project in submodules/makd.
Once you have all the dependencies installed, you need to convert the code to D2 (if you want to use it in D2). For this you also need to build/install the d1to2fix tool.
Also, make sure you have the Makd submodule properly updated (see the previous section for instructions), then just type:
make d2conv
The resulting code should work at least in upstream vanilla DMD v2.70.x, with
the exception of a few modules that depends on the old Tango runtime function
gc_usage(). There is a dummy implementation returning all zeros just to at
least allow compiling stuff, but until #1591 is merged into druntime, these
functions will remain slighty broken, and the tests (make DVER=2 after
make d2conv) will fail too.
Latest release notes | All releases
Ocean's release process is based on SemVer. This means that the major version is increased for breaking changes, the minor version is increased for feature releases, and the patch version is increased for bug fixes that don't cause breaking changes.
Any major version branch is maintained for 6 months from the point when the first release from the next major version branch happens. For example, the v2.x.x branch will get new features and bug fixes for 3 months starting with the release of v3.0.0 and will then be dropped out of support.