[Haskell-cafe] Interfacing with the GHC runtime from a library

[Nicola Gigante]

Hi everybody,

suppose to have an Haskell library which is in part implemented in C
for whatever reason. Can the C part talk with the runtime, in particular
the scheduler? In other words, does the runtime expose the functionality
needed to implement, for example, the STM library from outside the GHC
runtime itself?

Thank you,
Nicola