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bbdc65bb38
Test that a small Wasm program uses 8 MB of linear memory. This reflects the current allocator. We test an exact value, but if the allocator changes, we can update or relax this. Updates #69018. Change-Id: Ifc0bb420af008bd30cde4745b3efde3ce091b683 Reviewed-on: https://go-review.googlesource.com/c/go/+/622378 Reviewed-by: Michael Knyszek <mknyszek@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
31 lines
696 B
Go
31 lines
696 B
Go
// Copyright 2024 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"io"
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)
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// Expect 8 MB of memory usage for a small wasm program.
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// This reflects the current allocator. We test an exact
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// value here, but if the allocator changes, we can update
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// or relax this.
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const want = 8 << 20
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var w = io.Discard
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func main() {
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fmt.Fprintln(w, "hello world")
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const pageSize = 64 * 1024
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sz := uintptr(currentMemory()) * pageSize
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if sz != want {
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fmt.Printf("FAIL: unexpected memory size %d, want %d\n", sz, want)
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}
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}
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func currentMemory() int32 // implemented in assembly
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