Since the majority of the Hostcall implementation now sits in the
commmon layer, the PAL backend simply just needs to invoke it. One thing
that is missing though is HSA signal support.
The newly added pal::Signal class is a light emulaion of what HSA
signals provide. The current implementation is just enough to get
Hostcall working, but it can be expanded in the future if needed to
fully emulate HSA signals.
The major difference for now between PAL and ROCm hostcall
implemenations is that PAL doesn't support blocking signals. This will
be enabled in the near future. For now use active wait for PAL.
Change-Id: I746557354ab9d71a7d4a31f9320fcc2fee5aee7f
[ROCm/clr commit: 99e8ac55cd]
This change unifies the hostcall implementation for all the backends,
by pushing the common logic to the device layer. This is done by
replacing the use of hsa_signal_t with device::Signal (a light wrapper
around it).
Change-Id: I7b6fca7930b5a0b199da5d85e2e048354cc04e7b
[ROCm/clr commit: 671778bdd3]
agunashe
pvellien
Brian Sumner
Vladislav Sytchenko