feat(转换能力): 支持原生与网页批量并行

internal/webview/webview_memory_windows.go

@@ -0,0 +1,45 @@
+// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
+//
+// 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.
+
+package webview
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+// memoryStatusProc 查询系统物理内存和提交额度
+var memoryStatusProc = syscall.NewLazyDLL("kernel32.dll").NewProc("GlobalMemoryStatusEx")
+
+// conversionMemory 预留系统内存后返回可用于新增转换的额度
+// 返回: int64 可用字节数，查询失败时暂停扩容
+func conversionMemory() int64 {
+	status := struct {
+		length           uint32
+		load             uint32
+		total            uint64
+		available        uint64
+		totalPage        uint64
+		availablePage    uint64
+		totalVirtual     uint64
+		availableVirtual uint64
+		extended         uint64
+	}{}
+	status.length = uint32(unsafe.Sizeof(status))
+	ok, _, _ := memoryStatusProc.Call(uintptr(unsafe.Pointer(&status)))
+	if ok == 0 {
+		return 0
+	}
+	return max(0, int64(min(status.available, status.availablePage))-int64(status.total/8))
+}