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win32cache: less memory

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This commit is contained in:
Alexey Kudravtsev
2013-02-25 14:33:13 +04:00
parent 4c9116505a
commit 45b3f3333f
2 changed files with 18 additions and 18 deletions
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platform/platform-impl/src/com/intellij/openapi/vfs/impl/win32/Win32FsCache.java
+17 -15
View File
@@ -15,6 +15,7 @@
*/
package com.intellij.openapi.vfs.impl.win32;
import com.intellij.openapi.util.io.FileAttributes;
import com.intellij.openapi.util.io.win32.FileInfo;
import com.intellij.openapi.util.io.win32.IdeaWin32;
import com.intellij.openapi.vfs.VirtualFile;
@@ -34,19 +35,19 @@ import java.util.Map;
*/
class Win32FsCache {
private final IdeaWin32 myKernel = IdeaWin32.getInstance();
private Reference<Map<String, FileInfo>> myCache;
private Reference<Map<String, FileAttributes>> myCache;
void clearCache() {
myCache = null;
}
@NotNull
private Map<String, FileInfo> getMap() {
Reference<Map<String, FileInfo>> cache = myCache;
Map<String, FileInfo> map = cache == null ? null : cache.get();
private Map<String, FileAttributes> getMap() {
Reference<Map<String, FileAttributes>> cache = myCache;
Map<String, FileAttributes> map = cache == null ? null : cache.get();
if (map == null) {
map = new THashMap<String, FileInfo>();
myCache = new SoftReference<Map<String, FileInfo>>(map);
map = new THashMap<String, FileAttributes>();
myCache = new SoftReference<Map<String, FileAttributes>>(map);
}
return map;
}
@@ -60,10 +61,10 @@ class Win32FsCache {
if (!path.endsWith("/")) path += "/";
List<String> names = new ArrayList<String>(fileInfo.length);
Map<String, FileInfo> map = getMap();
Map<String, FileAttributes> map = getMap();
for (FileInfo info : fileInfo) {
String name = info.getName();
map.put(path + name, info);
map.put(path + name, info.toFileAttributes());
names.add(name);
}
@@ -71,17 +72,18 @@ class Win32FsCache {
}
@Nullable
FileInfo getInfo(@NotNull VirtualFile file) {
FileAttributes getAttributes(@NotNull VirtualFile file) {
String path = file.getPath();
Map<String, FileInfo> map = getMap();
FileInfo info = map.get(path);
if (info == null) {
info = myKernel.getInfo(path);
Map<String, FileAttributes> map = getMap();
FileAttributes attributes = map.get(path);
if (attributes == null) {
FileInfo info = myKernel.getInfo(path);
if (info == null) {
return null;
}
map.put(path, info);
attributes = info.toFileAttributes();
map.put(path, attributes);
}
return info;
return attributes;
}
}
platform/platform-impl/src/com/intellij/openapi/vfs/impl/win32/Win32LocalFileSystem.java
+1 -3
View File
@@ -16,7 +16,6 @@
package com.intellij.openapi.vfs.impl.win32;
import com.intellij.openapi.util.io.FileAttributes;
import com.intellij.openapi.util.io.win32.FileInfo;
import com.intellij.openapi.util.io.win32.IdeaWin32;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.openapi.vfs.impl.local.LocalFileSystemBase;
@@ -60,8 +59,7 @@ public class Win32LocalFileSystem extends LocalFileSystemBase {
@Override
public FileAttributes getAttributes(@NotNull VirtualFile file) {
final FileInfo fileInfo = myFsCache.getInfo(file);
return fileInfo != null ? fileInfo.toFileAttributes() : null;
return myFsCache.getAttributes(file);
}
@NotNull