c3p0-loom provides Java 21 "loom" virtual-thread based concurrency options to the c3p0 Connection pooling and management library.
In particular, it provides implementations of com.mchange.v2.c3p0.TaskRunnerFactory
that you can use by setting the configuration property taskRunnerFactoryClassName.
Currently c3p0-loom includes two implementations of TaskRunnerFactory:
Conceptually, this project should really be a part of the main c3p0 project, but main c3p0 is currently built under Java 11 (targeting Java 7) output, while this project must be built under Java 21. So for now we are maintaining and building them separately.
Releases of c3p0-loom share version numbers with main c3p0, however, and c3p0 is a transitive dependency of c3p0-loom. So if you wish to use
c3p0 with loom support, bringing com.mchange:c3p0-loom:<c3p0-version> should get you everything.
c3p0-loom is supported for c3p0 versions 0.10.0 and beyond.