archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 06:45:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8254162: Implementation of Foreign-Memory Access API (Third Incubator)

Browse source 
Reviewed-by: erikj, psandoz, alanb
This commit is contained in:
Maurizio Cimadamore 2020-11-12 16:37:23 +00:00
parent c6ab0fdb15
commit 3e70aac5cc
82 changed files with 6038 additions and 2837 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/java.base/share/classes/java/nio/MappedByteBuffer.java
View file

@ -31,6 +31,7 @@ import java.util.Objects;
import jdk.internal.access.foreign.MemorySegmentProxy;
import jdk.internal.access.foreign.UnmapperProxy;
import jdk.internal.misc.ScopedMemoryAccess;
/**
@ -87,6 +88,8 @@ public abstract class MappedByteBuffer
// determines the behavior of force operations.
private final boolean isSync;
static final ScopedMemoryAccess SCOPED_MEMORY_ACCESS = ScopedMemoryAccess.getScopedMemoryAccess();
// This should only be invoked by the DirectByteBuffer constructors
//
MappedByteBuffer(int mark, int pos, int lim, int cap, // package-private
@ -173,7 +176,7 @@ public abstract class MappedByteBuffer
if (fd == null) {
return true;
}
return MappedMemoryUtils.isLoaded(address, isSync, capacity());
return SCOPED_MEMORY_ACCESS.isLoaded(scope(), address, isSync, capacity());
}
/**
@ -191,7 +194,7 @@ public abstract class MappedByteBuffer
return this;
}
try {
MappedMemoryUtils.load(address, isSync, capacity());
SCOPED_MEMORY_ACCESS.load(scope(), address, isSync, capacity());
} finally {
Reference.reachabilityFence(this);
}
@ -280,7 +283,7 @@ public abstract class MappedByteBuffer
if ((address != 0) && (limit != 0)) {
// check inputs
Objects.checkFromIndexSize(index, length, limit);
MappedMemoryUtils.force(fd, address, isSync, index, length);
SCOPED_MEMORY_ACCESS.force(scope(), fd, address, isSync, index, length);
}
return this;
}