From adee7dee99e7afa218fbfd17b5ea4ff41ab99111 Mon Sep 17 00:00:00 2001
From: cxl <cxl@f0d560ea-af0d-0410-9eb7-867de7ffcac7>
Date: Mon, 8 Jun 2020 20:38:32 +0000
Subject: [PATCH] Core: GetSystemMemoryStatus Win32, Linux

git-svn-id: svn://ultimatepp.org/upp/trunk@14568 f0d560ea-af0d-0410-9eb7-867de7ffcac7
---
 uppsrc/Core/Cpu.cpp          | 25 +++++++++++++------------
 uppsrc/Core/Defs.h           |  2 +-
 uppsrc/CtrlCore/CtrlDraw.cpp |  4 +---
 3 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/uppsrc/Core/Cpu.cpp b/uppsrc/Core/Cpu.cpp
index 912765495..a08a795b8 100644
--- a/uppsrc/Core/Cpu.cpp
+++ b/uppsrc/Core/Cpu.cpp
@@ -129,21 +129,22 @@ int CPU_Cores()
 
 #endif
 
+void GetSystemMemoryStatus(uint64& total, uint64& free)
+{
 #ifdef PLATFORM_WIN32
-bool IsDecentMachine()
-{
-	if(!IsWin2K())
-		return false;
-	MEMORYSTATUS m;
-	GlobalMemoryStatus(&m);
-	return m.dwTotalPhys > 500 * 1024 * 1024;
-}
+	MEMORYSTATUSEX m;
+	GlobalMemoryStatusEx(&m);
+	total = m.ullTotalPhys;
+	free = m.ullAvailPhys;
+#elif defined(PLATFORM_LINUX)
+	int pgsz = getpagesize();
+	total = sysconf(_SC_PHYS_PAGES) * pgsz;
+	free = sysconf(_SC_AVPHYS_PAGES) * pgsz;
 #else
-bool IsDecentMachine()
-{
-	return true;
-}
+	total = 512*1024*1024;
+	free = 16*1024*1024;
 #endif
+}
 
 #define ENDIAN_SWAP { while(count--) { EndianSwap(*v++); } }
 
diff --git a/uppsrc/Core/Defs.h b/uppsrc/Core/Defs.h
index 91a941ef0..1aabe1d76 100644
--- a/uppsrc/Core/Defs.h
+++ b/uppsrc/Core/Defs.h
@@ -484,7 +484,7 @@ bool CpuAVX();
 
 int  CPU_Cores();
 
-bool IsDecentMachine();
+void GetSystemMemoryStatus(uint64& total, uint64& free);
 
 template <class T>
 inline void Swap(T& a, T& b) { T tmp = pick(a); a = pick(b); b = pick(tmp); }
diff --git a/uppsrc/CtrlCore/CtrlDraw.cpp b/uppsrc/CtrlCore/CtrlDraw.cpp
index 846a804e1..ca293d63b 100644
--- a/uppsrc/CtrlCore/CtrlDraw.cpp
+++ b/uppsrc/CtrlCore/CtrlDraw.cpp
@@ -697,7 +697,6 @@ void Ctrl::SyncMoves()
 Ctrl& Ctrl::BackPaintHint()
 {
 	GuiLock __;
-	if(IsDecentMachine())
 		BackPaint();
 	return *this;
 }
@@ -710,8 +709,7 @@ void  Ctrl::GlobalBackPaint(bool b)
 
 void  Ctrl::GlobalBackPaintHint()
 {
-	if(IsDecentMachine())
-		GlobalBackPaint();
+	GlobalBackPaint();
 }
 
 void Ctrl::GlobalBackBuffer(bool b)