Before, we didn't have a suite of tests for our filesystem used by ABI,
now we do (`sysfs`). Moreover, we are testing stdlibs and wasi-testsuite
on commit. We don't need this fstest anymore.
Signed-off-by: Adrian Cole <adrian@tetrate.io>
Fixes#1211
Previously, host functions are getting api.Module for the "originating" module,
which is the module for api.Function currently invoked, except that the api.Module
is modified by withMemory with the caller's memory instance, therefore there
haven't been no problem for most cases. The only issues were the methods
besides Memory() of api.Module, and this commit fixes them.
Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
Updated `newMemorySizer()` to return the updated value, but also
ensure that an invalid `max` still throws an error (invalid module).
- Minor cleanup to use the `memorySizer` type instead of the full
func signature for clarity
- Added a wat+wasm under `internal/integration_test/vs/testdata/`
simply because that's where the other cache-related testdata was.
Closes#1153.
Signed-off-by: Edoardo Vacchi <evacchi@users.noreply.github.com>
This renames `InstantiateModuleFromBinary` to `Instantiate` to both make
first time use simpler to write and also de-complicate adding a
`WithConfig` variant as requested in #1105
End users in simple case need to change their signature like so.
```diff
- mod, err := r.InstantiateModuleFromBinary(ctx, addWasm)
+ mod, err := r.Instantiate(ctx, addWasm)
```
In practice, many will not need to change their signature because they
had to use the `InstantiateModule` function in order to assign
configuration such as the module name, filesystem or use a real clock.
Instead, they had to use the more complicated chain of `CompileModule`
and `InstantiateModule` even when only assigning config. Users in this
situation can opt into the more simplified syntax below:
```go
mod, err := r.InstantiateWithConfig(ctx, addWasm,
wazero.NewModuleConfig().WithName("adder"))
```
```diff
- mod, err := r.InstantiateModuleFromBinary(ctx, addWasm)
+ mod, err := r.Instantiate(ctx, addWasm)
```
Signed-off-by: Adrian Cole <adrian@tetrate.io>
This moves our floor version to the same we'll release 1.0 with: 1.18.
This is congruent with our version policy which is current-2.
Fixes#921
Signed-off-by: Adrian Cole <adrian@tetrate.io>
Formerly, we introduced `wazero.Namespace` to help avoid module name or import conflicts while still sharing the runtime's compilation cache. Now that we've introduced `CompilationCache` `wazero.Namespace` is no longer necessary. By removing it, we reduce the conceptual load on end users as well internal complexity. Since most users don't use namespace, the change isn't very impactful.
Users who are only trying to avoid module name conflict can generate a name like below instead of using multiple runtimes:
```go
moduleName := fmt.Sprintf("%d", atomic.AddUint64(&m.instanceCounter, 1))
module, err := runtime.InstantiateModule(ctx, compiled, config.WithName(moduleName))
```
For `HostModuleBuilder` users, we no longer take `Namespace` as the last parameter of `Instantiate` method:
```diff
// log to the console.
_, err := r.NewHostModuleBuilder("env").
NewFunctionBuilder().WithFunc(logString).Export("log").
- Instantiate(ctx, r)
+ Instantiate(ctx)
if err != nil {
log.Panicln(err)
}
```
The following is an example diff a use of namespace can use to keep compilation cache while also ensuring their modules don't conflict:
```diff
func useMultipleRuntimes(ctx context.Context, cache) {
- r := wazero.NewRuntime(ctx)
+ cache := wazero.NewCompilationCache()
for i := 0; i < N; i++ {
- // Create a new namespace to instantiate modules into.
- ns := r.NewNamespace(ctx) // Note: this is closed when the Runtime is
+ r := wazero.NewRuntimeWithConfig(ctx, wazero.NewRuntimeConfig().WithCompilationCache(cache))
// Instantiate a new "env" module which exports a stateful function.
_, err := r.NewHostModuleBuilder("env").
```
Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
This introduces the new API wazero.Cache interface which can be passed to wazero.RuntimeConfig.
Users can configure this to share the underlying compilation cache across multiple wazero.Runtime.
And along the way, this deletes the experimental file cache API as it's replaced by this new API.
Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>
Co-authored-by: Crypt Keeper <64215+codefromthecrypt@users.noreply.github.com>
This consolidates test files and ensures our various implementations of
`syscallfs.FS` pass `fstest.TestFS`.
Signed-off-by: Adrian Cole <adrian@tetrate.io>
This adds ExportedFunctionDefinitions and ExportedMemoryDefinitions to
api.Module so that those who can't access CompileModule can see them.
Fixes#839
Signed-off-by: Adrian Cole <adrian@tetrate.io>
We originally exported WASI errno as we originally supported invoking
host functions directly (e.g. without a guest). This was an invalid call
pattern, and we removed that. However, we left the errnos exported even
though the caller of a guest won't ever see them. This prevented us from
re-using them cleanly in features such as logging.
This moves all constants including function names and flag enums
internal so that there is less duplication between logging and
implementation of wasi functions. This also helps in reference searches,
as we can analyze uses of a particular function name.
The only constant left exported is the module name, as there's a use
case for that (overriding implementations via FunctionBuilder).
Signed-off-by: Adrian Cole <adrian@tetrate.io>
This adds benchmarks from lib sodium, but the results are hard to interpret. We may need to recompile them using zig so that we can export a function instead of using WASI to do it. Right now, we can't really see performance of functions because other runtimes aren't designed to re-instantiate like ours.
This only compares against wasmtime as that's the only runtime besides
ours that is safe to re-instantiate.
Signed-off-by: Adrian Cole <adrian@tetrate.io>
This removes ProxyFunc, which was an internal experiment to make
functions that use memory to store parameters or results easier to see.
The main issue with the approach was instantiation performance, as it
needs to dynamically generate functions. Another approach to visibility
can happen later, for example via internal logging hooks.
Notably, this fixed the performance regression after switching WASI to ProxyFunc:
```
name old time/op new time/op delta
Allocation/Compile-16 39.8ms ± 0% 39.5ms ± 0% -0.62% (p=0.016 n=4+5)
Allocation/Instantiate-16 1.74ms ± 4% 0.86ms ± 1% -50.19% (p=0.008 n=5+5)
Allocation/Call-16 4.25µs ± 1% 4.21µs ± 2% ~ (p=0.151 n=5+5)
name old alloc/op new alloc/op delta
Allocation/Compile-16 20.3MB ± 0% 20.3MB ± 0% ~ (p=0.841 n=5+5)
Allocation/Instantiate-16 1.04MB ± 0% 0.56MB ± 0% -45.88% (p=0.008 n=5+5)
Allocation/Call-16 48.0B ± 0% 48.0B ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
Allocation/Compile-16 432k ± 0% 432k ± 0% ~ (p=0.833 n=5+5)
Allocation/Instantiate-16 16.6k ± 0% 6.7k ± 0% -59.34% (p=0.008 n=5+5)
Allocation/Call-16 5.00 ± 0% 5.00 ± 0% ~ (all equal)
```
Since we also removed it from `GOARCH=wasm GOOS=js`, we experienced a performance
benefit there as well:
```
name old time/op new time/op delta
_main/gojs.Run-16 13.7ms ± 1% 12.2ms ± 3% -10.76% (p=0.008 n=5+5)
name old alloc/op new alloc/op delta
_main/gojs.Run-16 25.4MB ± 0% 25.0MB ± 0% -1.66% (p=0.008 n=5+5)
name old allocs/op new allocs/op delta
_main/gojs.Run-16 166k ± 0% 158k ± 0% -4.79% (p=0.016 n=4+5)
```
Signed-off-by: Adrian Cole <adrian@tetrate.io>
We originally had a `context.Context` for anything that might be
traced, but it turned out to be only useful for lifecycle and host functions.
For instruction-scoped aspects like memory updates, a context parameter is too
fine-grained and also invisible in practice. For example, most users will use
the compiler engine, and its memory, global or table access will never use go's
context.
Signed-off-by: Adrian Cole <adrian@tetrate.io>
