File 63efbd5c6fecdc8cde99dbf9147d7188e452d226.patch of Package wine

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File 63efbd5c6fecdc8cde99dbf9147d7188e452d226.patch of Package wine

From 63efbd5c6fecdc8cde99dbf9147d7188e452d226 Mon Sep 17 00:00:00 2001
From: Brendan Shanks <bshanks@codeweavers.com>
Date: Fri, 3 Mar 2023 10:49:18 -0800
Subject: [PATCH] kernelbase: Implement DiscardVirtualMemory().

(cherry picked from commit d7d94ed0df6931907d1c89d7d7551dd40f5214c5)
---
 dlls/kernel32/kernel32.spec     |  1 +
 dlls/kernelbase/kernelbase.spec |  2 +-
 dlls/kernelbase/memory.c        | 13 +++++++++++++
 include/memoryapi.h             |  1 +
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/dlls/kernel32/kernel32.spec b/dlls/kernel32/kernel32.spec
index caa2f42d07c..f0fc51e7ab6 100644
--- a/dlls/kernel32/kernel32.spec
+++ b/dlls/kernel32/kernel32.spec
@@ -373,6 +373,7 @@
 @ stdcall -import DeleteProcThreadAttributeList(ptr)
 # @ stub DisableThreadProfiling
 @ stdcall DisassociateCurrentThreadFromCallback(ptr) NTDLL.TpDisassociateCallback
+@ stdcall DiscardVirtualMemory(ptr long) kernelbase.DiscardVirtualMemory
 @ stdcall DeleteTimerQueue(long)
 @ stdcall -import DeleteTimerQueueEx(long long)
 @ stdcall -import DeleteTimerQueueTimer(long long long)
diff --git a/dlls/kernelbase/kernelbase.spec b/dlls/kernelbase/kernelbase.spec
index 92421ec4ceb..fc687efb913 100644
--- a/dlls/kernelbase/kernelbase.spec
+++ b/dlls/kernelbase/kernelbase.spec
@@ -269,7 +269,7 @@
 @ stdcall DisablePredefinedHandleTableInternal(long)
 @ stdcall DisableThreadLibraryCalls(long)
 @ stdcall DisassociateCurrentThreadFromCallback(ptr) ntdll.TpDisassociateCallback
-# @ stub DiscardVirtualMemory
+@ stdcall DiscardVirtualMemory(ptr long)
 @ stdcall DisconnectNamedPipe(long)
 @ stdcall DnsHostnameToComputerNameExW(wstr ptr ptr)
 # @ stub DsBindWithSpnExW
diff --git a/dlls/kernelbase/memory.c b/dlls/kernelbase/memory.c
index 47a2127452f..cc22a433359 100644
--- a/dlls/kernelbase/memory.c
+++ b/dlls/kernelbase/memory.c
@@ -52,6 +52,19 @@ BOOLEAN WINAPI RtlSetUserValueHeap( HANDLE handle, ULONG flags, void *ptr, void
  ***********************************************************************/
 
 
+/***********************************************************************
+ *             DiscardVirtualMemory   (kernelbase.@)
+ */
+DWORD WINAPI DECLSPEC_HOTPATCH DiscardVirtualMemory( void *addr, SIZE_T size )
+{
+    NTSTATUS status;
+    LPVOID ret = addr;
+
+    status = NtAllocateVirtualMemory( GetCurrentProcess(), &ret, 0, &size, MEM_RESET, PAGE_NOACCESS );
+    return RtlNtStatusToDosError( status );
+}
+
+
 /***********************************************************************
  *             FlushViewOfFile   (kernelbase.@)
  */
diff --git a/include/memoryapi.h b/include/memoryapi.h
index 8743e67927c..6728b832fa7 100644
--- a/include/memoryapi.h
+++ b/include/memoryapi.h
@@ -41,5 +41,6 @@ typedef struct WIN32_MEMORY_REGION_INFORMATION
     SIZE_T CommitSize;
 } WIN32_MEMORY_REGION_INFORMATION;
 
+DWORD WINAPI DiscardVirtualMemory(void *addr, SIZE_T size);
 BOOL WINAPI QueryVirtualMemoryInformation(HANDLE process,const void *addr,
         WIN32_MEMORY_INFORMATION_CLASS info_class, void *info, SIZE_T size, SIZE_T *ret_size);

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File 63efbd5c6fecdc8cde99dbf9147d7188e452d226.patch of Package wine

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