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pools.go
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pools.go
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package hir
import (
`sync`
`github.com/chenzhuoyu/jitkit/internal/rt`
)
var (
instrPool sync.Pool
builderPool sync.Pool
)
func newInstr(op OpCode) *Ir {
if v := instrPool.Get(); v == nil {
return allocInstr(op)
} else {
return resetInstr(op, v.(*Ir))
}
}
func freeInstr(p *Ir) {
instrPool.Put(p)
}
func allocInstr(op OpCode) (p *Ir) {
p = new(Ir)
p.Op = op
return
}
func resetInstr(op OpCode, p *Ir) *Ir {
*p = Ir{Op: op}
return p
}
func newBuilder() *Builder {
if v := builderPool.Get(); v == nil {
return allocBuilder()
} else {
return resetBuilder(v.(*Builder))
}
}
func freeBuilder(p *Builder) {
builderPool.Put(p)
}
func allocBuilder() (p *Builder) {
p = new(Builder)
p.refs = make(map[string]*Ir, 64)
p.pends = make(map[string][]**Ir, 64)
return
}
func resetBuilder(p *Builder) *Builder {
p.i = 0
p.head = nil
p.tail = nil
rt.MapClear(p.refs)
rt.MapClear(p.pends)
return p
}