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Revert feature affinity per core on windows

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This commit is contained in:
Laurent Clouet
2017-10-26 15:41:06 +02:00
parent ba75059a0c
commit 8771d07a99
3 changed files with 0 additions and 29 deletions
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4
src/com/sheepit/client/os/Windows.java
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@@ -139,10 +139,6 @@ public class Windows extends OS {
else {
wproc.setPriority(WinProcess.PRIORITY_BELOW_NORMAL);
}
if (env != null) {
String cores = env.get("CORES");
wproc.setAffinity(Integer.parseInt(cores));
}
return p;
}

10
src/com/sheepit/client/os/windows/Kernel32Lib.java
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@@ -21,7 +21,6 @@ import com.sun.jna.Library;
import com.sun.jna.Pointer;
import com.sun.jna.Structure;
import com.sun.jna.platform.win32.BaseTSD;
import com.sun.jna.platform.win32.BaseTSD.DWORD_PTR;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinDef.DWORD;
import com.sun.jna.platform.win32.WinNT;
@@ -212,13 +211,4 @@ public interface Kernel32Lib extends Library {
*/
public int SetErrorMode(DWORD uMode);
/**
* See : https://msdn.microsoft.com/en-us/library/windows/desktop/ms686247%28v=vs.85%29.aspx
*
* @param hThread
* @param dwThreadAffinityMask
* @return If the function succeeds, the return value is the thread's previous affinity mask.
*/
public boolean SetProcessAffinityMask(HANDLE hProcess, DWORD_PTR dwProcessAffinityMask);
}

15
src/com/sheepit/client/os/windows/WinProcess.java
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@@ -26,7 +26,6 @@ import java.util.List;
import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.platform.win32.BaseTSD.DWORD_PTR;
import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.Kernel32Util;
import com.sun.jna.platform.win32.WinDef.DWORD;
@@ -122,20 +121,6 @@ public class WinProcess {
return this.kernel32lib.SetPriorityClass(this.handle, priority);
}
public boolean setAffinity(int numberCores) {
// affects the process to a specific core/cpu, it will reduce the number of switch between core
// that way the machine will look "less busy" since default behavior for windows is to put 4 cores
// at 25% instead of 1 core at 100% but from the user point of view, it introduce lag.
if (numberCores > 0) {
long coreAffinity = 0;
for (int i = 0; i < numberCores; i++) {
coreAffinity |= 1L << i;
}
return this.kernel32lib.SetProcessAffinityMask(this.handle, new DWORD_PTR(coreAffinity));
}
return false;
}
private void terminate() {
Kernel32.INSTANCE.TerminateProcess(this.handle, 0);
Kernel32.INSTANCE.CloseHandle(this.handle); // we are sure that the parent Process object is dead