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feat: add Standby List Cleaner tab (ISLC-style memory purge) - #1089
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Implements Standby List Cleaner (replaces its WIP placeholder in Gaming & Profiles). Closes #325. - StandbyMemoryService: GlobalMemoryStatusEx for live stats (no admin) and ntdll NtSetSystemInformation(SystemMemoryListInformation=80, MemoryPurgeStandbyList=4) to purge — the same mechanism RAMMap/ISLC use. Enables SeProfileSingleProcessPrivilege via AdjustTokenPrivileges first and checks ERROR_NOT_ALL_ASSIGNED (the silent "not admin" trap, since AdjustTokenPrivileges returns true even when the privilege isn't held). All-[LibraryImport]; LookupPrivilegeValueW pinned to the W entry point. - Purge is non-destructive: standby is clean disk-backed file cache, so clearing it loses nothing (Windows reloads from disk on next use). - StandbyMemoryViewModel: 2s live poll, manual purge, and threshold-based auto-purge (pure ShouldAutoPurge, unit-tested). Reading works without admin; purge is gated on AdminHelper.IsElevated() with the standard banner. - Marked PREVIEW via the badge mechanism.
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| try | ||
| { | ||
| Marshal.WriteInt32(buffer, NativeMethods.MemoryPurgeStandbyList); | ||
| int status = NativeMethods.NtSetSystemInformation(NativeMethods.SystemMemoryListInformation, buffer, sizeof(int)); |
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| private static void EnableProfilePrivilege() | ||
| { | ||
| if (!NativeMethods.OpenProcessToken(NativeMethods.GetCurrentProcess(), |
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What
Implements Standby List Cleaner (Gaming & Profiles), replacing its WIP placeholder. Closes #325.
The built-in equivalent of ISLC — frees cached "standby" memory to reduce stutter when RAM runs low in games.
How
StandbyMemoryService:GlobalMemoryStatusEx(total / available / load%) — no admin, so the display is always live.NtSetSystemInformation(SystemMemoryListInformation=80, MemoryPurgeStandbyList=4)— the RAMMap/ISLC mechanism.SeProfileSingleProcessPrivilegeenabled on an elevated token. The service enables it viaAdjustTokenPrivilegesand then checksGetLastError == ERROR_NOT_ALL_ASSIGNED— becauseAdjustTokenPrivilegesreturnstrueeven when the privilege isn't held (a non-elevated token), so a naive check would silently no-op. Without this, the purge appears to "do nothing".[LibraryImport];LookupPrivilegeValueWpinned to the W entry point (A/W rule).StandbyMemoryViewModel— 2s live poll, manual Purge, and an auto-purge toggle + threshold slider (pureShouldAutoPurge, unit-tested). Purge is gated onAdminHelper.IsElevated()with the standard elevation banner; reading stats works without admin.Preview
Marked PREVIEW (sidebar pill + banner).
Tests
StandbyMemoryTests—ShouldAutoPurge(below/at/above threshold + zero/negative guards),MemoryStatusformatting + MB computation, Empty.NavLeaf_StandbyCleaner_IsImplementedAndMarkedPreview.Verification