Fix performance degradation while host functions call

[dmvolod]

Issue #, if available:
This is probably one of the option to fix performance issue

Description of changes:
Hosts functions performance tests before fix

/u01/git/wasm/go-plugin/tests/host-functions
go test -run='^$' -bench '^Benchmark' ./... -count=6 -timeout 99999s
name              time/op
HostFunctions-12  1.76ms ±12%

name              alloc/op
HostFunctions-12  5.95kB ± 6%

name              allocs/op
HostFunctions-12    25.0 ± 0%

Hosts functions performance tests after fix

/u01/git/wasm/go-plugin/tests/host-functions
go test -run='^$' -bench '^Benchmark' ./... -count=6
HostFunctions-12  13.5µs ±12%

name              alloc/op
HostFunctions-12  6.27kB ± 1%

name              allocs/op
HostFunctions-12    25.0 ± 0%

Hosts functions performance tests for v0.7.0

/u01/git/wasm/go-plugin/tests/host-functions
go test -run='^$' -bench '^Benchmark' ./... -count=6
HostFunctions-12  10.6µs ±11%

name              alloc/op
HostFunctions-12  5.99kB ± 2%

name              allocs/op
HostFunctions-12    24.0 ± 0%

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cc: @codefromthecrypt , @lburgazzoli

[lburgazzoli]

maybe for this cases we could have another variant of the ByteToPtr that does not perform any allocation ?

[dmvolod]

Yes, this can be an option for host functions only, but need to validate that's GC working correctly in this case

[codefromthecrypt]

ps you can use https://pkg.go.dev/golang.org/x/perf/cmd/benchstat to format the before after so it is easier to read.

[dmvolod]

ps you can use https://pkg.go.dev/golang.org/x/perf/cmd/benchstat to format the before after so it is easier to read.

Yes, sure. Changed to the new format

[codefromthecrypt]

thanks, this is a significant fix!