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add warning message when wazero compiler not supported, update supported platforms in README

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kim 2025-03-10 14:06:52 +00:00
commit 664f62a1cc
2 changed files with 32 additions and 17 deletions
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8
README.md
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@ -292,13 +292,13 @@ This is the current status of support offered by GoToSocial for different platfo
#### 64-bit
64-bit platforms require the following (now, very common) CPU features:
Notes on 64-bit CPU feature requirements:
- x86-64 require SSE4.1 (for both media decoding and WASM SQLite)
- x86_64 requires the SSE4.1 instruction set. (CPUs manufactured after ~2010)
- Armv8 require ARM64 Large System Extensions (specifically when using WASM SQLite)
- ARM64 requires no specific features, ARMv8 CPUs (and later) have all required features.
Without these features, performance will suffer. In these situations, you may have some success building a binary yourself with the totally **unsupported, experimental** [nowasm](https://docs.gotosocial.org/en/latest/advanced/builds/nowasm/) tag.
If any of the above features are missing, performance of media processing (and possibly, SQLite) will suffer. In these situations, you may have some success building a binary yourself with the totally **unsupported, experimental** [nowasm](https://docs.gotosocial.org/en/latest/advanced/builds/nowasm/) tag.
#### BSDs

41
internal/media/ffmpeg/wasm.go
View file

@ -28,6 +28,7 @@ import (
"codeberg.org/gruf/go-ffmpreg/embed"
"codeberg.org/gruf/go-ffmpreg/wasm"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/tetratelabs/wazero"
"golang.org/x/sys/cpu"
)
@ -50,14 +51,20 @@ func initWASM(ctx context.Context) error {
var cfg wazero.RuntimeConfig
// Create new runtime config, taking bug into account:
// taking https://github.com/tetratelabs/wazero/pull/2365
//
// Thanks @ncruces (of go-sqlite3) for the fix!
if compilerSupported() {
cfg = wazero.NewRuntimeConfigCompiler()
} else {
cfg = wazero.NewRuntimeConfigInterpreter()
// Allocate new runtime config, letting
// wazero determine compiler / interpreter.
cfg = wazero.NewRuntimeConfig()
// Though still perform a check of CPU features at
// runtime to warn about slow interpreter performance.
if reason, supported := compilerSupported(); !supported {
log.Warn(ctx, "!!! WAZERO COMPILER MAY NOT BE AVAILABLE !!!"+
" Reason: "+reason+"."+
" Wazero will likely fall back to interpreter mode,"+
" resulting in poor performance for media processing (and SQLite, if in use)."+
" For more info and possible workarounds, please check:"+
" https://docs.gotosocial.org/en/latest/getting_started/releases/#supported-platforms",
)
}
if dir := os.Getenv("GTS_WAZERO_COMPILATION_CACHE"); dir != "" {
@ -121,7 +128,7 @@ func initWASM(ctx context.Context) error {
return nil
}
func compilerSupported() bool {
func compilerSupported() (string, bool) {
switch runtime.GOOS {
case "linux", "android",
"windows", "darwin",
@ -129,15 +136,23 @@ func compilerSupported() bool {
"solaris", "illumos":
break
default:
return false
return "unsupported OS", false
}
switch runtime.GOARCH {
case "amd64":
return cpu.X86.HasSSE41
// NOTE: wazero in the future may decouple the
// requirement of simd (sse4_1) from requirements
// for compiler support in the future, but even
// still our module go-ffmpreg makes use of them.
return "amd64 SSE4.1 required", cpu.X86.HasSSE41
case "arm64":
return true
// NOTE: this particular check may change if we
// later update go-ffmpreg to a version that makes
// use of threads, i.e. v7.x.x. in that case we would
// need to check for cpu.ARM64.HasATOMICS.
return "arm64 LSE/atomics required", true
default:
return false
return "unsupported ARCH", false
}
}