runtime: add remaining wasip1 files

Implements OS interactions and memory management.

For #58141

Co-authored-by: Richard Musiol <neelance@gmail.com>
Co-authored-by: Achille Roussel <achille.roussel@gmail.com>
Co-authored-by: Julien Fabre <ju.pryz@gmail.com>
Co-authored-by: Evan Phoenix <evan@phx.io>
Change-Id: I876e7b033090c2fe2d76d2535bb63d52efa36185
Reviewed-on: https://go-review.googlesource.com/c/go/+/479618
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/src/internal/testenv/testenv.go b/src/internal/testenv/testenv.go
index 94cec0b8bd..565230e24c 100644
--- a/src/internal/testenv/testenv.go
+++ b/src/internal/testenv/testenv.go
@@ -78,6 +78,24 @@ func MustHaveGoRun(t testing.TB) {
 	}
 }
 
+// HasParallelism reports whether the current system can execute multiple
+// threads in parallel.
+func HasParallelism() bool {
+	switch runtime.GOOS {
+	case "js", "wasip1":
+		return false
+	}
+	return true
+}
+
+// MustHaveParallelism checks that the current system can execute multiple
+// threads in parallel. If not, MustHaveParallelism calls t.Skip with an explanation.
+func MustHaveParallelism(t testing.TB) {
+	if !HasParallelism() {
+		t.Skipf("skipping test: no parallelism available on %s/%s", runtime.GOOS, runtime.GOARCH)
+	}
+}
+
 // GoToolPath reports the path to the Go tool.
 // It is a convenience wrapper around GoTool.
 // If the tool is unavailable GoToolPath calls t.Skip.