The binding starts no threads and keeps no queues; the application polls every event loop, batch endpoint and client on threads it owns.
A route handler runs on the thread inside take_call or take_calls for its event loop, and a batch handler on the thread inside take_batches for its endpoint.
On the polling thread nothing arrives while a handler runs, so a pull finding nothing there raises WOULD_BLOCK instead of waiting, and a streamed body is read from another thread.
PollingWhat Server.take_call found of its event loop. Binding-only.struct Pollingcode | c_int | Which of the two it is. |
|---|
SERVING | Polling(Int32(0)) | The loop serves, or drains what it holds after a stop. |
|---|---|---|
RETIRED | Polling(Int32(1)) | The loop drained or cut everything after Server.stop, so a caller polling in slices stops. |
Copyable, Deinitable, Equatable, ImplicitlyCopyable, Movable, RegisterPassable, TrivialRegisterPassableCPUClassA CPU kernel bundle, ucall_cpu_class_t in C. Library.cpu_class_name spells each one.struct CPUClasscode | c_int | The raw ucall_cpu_class_t value the ABI exchanges. |
|---|
UNKNOWN | CPUClass(Int32(0)) | No class requested: initialization picks the best class this machine runs. |
|---|---|---|
SERIAL | CPUClass(Int32(1)) | Portable kernels with no SIMD, which every machine runs. |
INTEL_HASWELL | CPUClass(Int32(2)) | AVX2 kernels, as on Intel Haswell. |
INTEL_SKYLAKE | CPUClass(Int32(3)) | Adds AVX-512 kernels, as on Intel Skylake-X. |
INTEL_ICELAKE | CPUClass(Int32(4)) | Adds Ice Lake's AVX-512 extensions and SHA. |
INTEL_ALDER | CPUClass(Int32(5)) | AVX2 kernels with SHA and no AVX-512, as on Intel Alder Lake. |
AWS_G2 | CPUClass(Int32(6)) | NEON kernels with the AES and SHA extensions, as on AWS Graviton2. |
AWS_G5 | CPUClass(Int32(7)) | As on AWS Graviton5, running the kernels of AWS_G2. |
MONOVERSIONED | CPUClass(Int32(8)) | The one class a monoversioned build compiles, over every capability it targets. |
Copyable, Deinitable, Equatable, ImplicitlyCopyable, Movable, RegisterPassable, TrivialRegisterPassable