75 lines
2.6 KiB
Java
75 lines
2.6 KiB
Java
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.os;
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/**
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* Retrieve overall information about the space on a filesystem. This is a
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* Wrapper for Unix statfs().
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*/
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public class StatFs {
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/**
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* Construct a new StatFs for looking at the stats of the
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* filesystem at <var>path</var>. Upon construction, the stat of
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* the file system will be performed, and the values retrieved available
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* from the methods on this class.
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*
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* @param path A path in the desired file system to state.
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*/
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public StatFs(String path) { native_setup(path); }
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/**
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* Perform a restat of the file system referenced by this object. This
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* is the same as re-constructing the object with the same file system
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* path, and the new stat values are available upon return.
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*/
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public void restat(String path) { native_restat(path); }
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@Override
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protected void finalize() { native_finalize(); }
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/**
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* The size, in bytes, of a block on the file system. This corresponds
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* to the Unix statfs.f_bsize field.
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*/
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public native int getBlockSize();
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/**
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* The total number of blocks on the file system. This corresponds
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* to the Unix statfs.f_blocks field.
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*/
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public native int getBlockCount();
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/**
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* The total number of blocks that are free on the file system, including
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* reserved blocks (that are not available to normal applications). This
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* corresponds to the Unix statfs.f_bfree field. Most applications will
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* want to use {@link #getAvailableBlocks()} instead.
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*/
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public native int getFreeBlocks();
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/**
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* The number of blocks that are free on the file system and available to
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* applications. This corresponds to the Unix statfs.f_bavail field.
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*/
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public native int getAvailableBlocks();
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private int mNativeContext;
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private native void native_restat(String path);
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private native void native_setup(String path);
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private native void native_finalize();
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}
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