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package base
import (
"sync"
pb "github.com/mudler/LocalAI/pkg/grpc/proto"
)
// SingleThread are backends that does not support multiple requests.
// There will be only one request being served at the time.
// This is useful for models that are not thread safe and cannot run
// multiple requests at the same time.
type SingleThread struct {
Base
backendBusy sync.Mutex
}
// Locking returns true if the backend needs to lock resources
func (llm *SingleThread) Locking() bool {
return true
}
func (llm *SingleThread) Lock() {
llm.backendBusy.Lock()
}
func (llm *SingleThread) Unlock() {
llm.backendBusy.Unlock()
}
func (llm *SingleThread) Busy() bool {
r := llm.backendBusy.TryLock()
if r {
llm.backendBusy.Unlock()
}
return r
}
// backends may wish to call this to capture the gopsutil info, then enhance with additional memory usage details?
func (llm *SingleThread) Status() (pb.StatusResponse, error) {
mud := memoryUsage()
state := pb.StatusResponse_READY
if llm.Busy() {
state = pb.StatusResponse_BUSY
}
return pb.StatusResponse{
State: state,
Memory: mud,
}, nil
}
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