Add Windows stats

userapi/util/stats.go

@@ -39,7 +39,8 @@ func getMemoryStats(p *phoneHomeStats) error {
 	if usedCPUTime == 0 || newData.timestamp == oldUsage.timestamp {
 		p.stats["cpu_average"] = 0
 	} else {
-		p.stats["cpu_average"] = usedCPUTime / (newData.timestamp - oldUsage.timestamp) * 100
+		// conversion to int64 required for GOARCH=386
+		p.stats["cpu_average"] = int64(usedCPUTime) / (newData.timestamp - oldUsage.timestamp) * 100
 	}
 	p.stats["memory_rss"] = newUsage.Maxrss
 	return nil

userapi/util/stats_windows.go

@@ -0,0 +1,29 @@
+// Copyright 2022 The Matrix.org Foundation C.I.C.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build !wasm
+// +build !wasm
+
+package util
+
+import (
+	"runtime"
+)
+
+func getMemoryStats(p *phoneHomeStats) error {
+	var memStats runtime.MemStats
+	runtime.ReadMemStats(&memStats)
+	p.stats["memory_rss"] = memStats.Alloc
+	return nil
+}