diff options
Diffstat (limited to 'common/device/com/android/net/module/util/BpfMap.java')
| -rw-r--r-- | common/device/com/android/net/module/util/BpfMap.java | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/common/device/com/android/net/module/util/BpfMap.java b/common/device/com/android/net/module/util/BpfMap.java index 5f05c7c9..b42c3885 100644 --- a/common/device/com/android/net/module/util/BpfMap.java +++ b/common/device/com/android/net/module/util/BpfMap.java @@ -40,7 +40,7 @@ import java.util.function.BiConsumer; * @param <K> the key of the map. * @param <V> the value of the map. */ -public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable { +public class BpfMap<K extends Struct, V extends Struct> implements IBpfMap<K, V>, AutoCloseable { static { System.loadLibrary(JniUtil.getJniLibraryName(BpfMap.class.getPackage())); } @@ -100,6 +100,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * Update an existing or create a new key -> value entry in an eBbpf map. * (use insertOrReplaceEntry() if you need to know whether insert or replace happened) */ + @Override public void updateEntry(K key, V value) throws ErrnoException { writeToMapEntry(mMapFd, key.writeToBytes(), value.writeToBytes(), BPF_ANY); } @@ -108,6 +109,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * If the key does not exist in the map, insert key -> value entry into eBpf map. * Otherwise IllegalStateException will be thrown. */ + @Override public void insertEntry(K key, V value) throws ErrnoException, IllegalStateException { try { @@ -123,6 +125,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * If the key already exists in the map, replace its value. Otherwise NoSuchElementException * will be thrown. */ + @Override public void replaceEntry(K key, V value) throws ErrnoException, NoSuchElementException { try { @@ -140,6 +143,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * (use updateEntry() if you don't care whether insert or replace happened) * Note: see inline comment below if running concurrently with delete operations. */ + @Override public boolean insertOrReplaceEntry(K key, V value) throws ErrnoException { try { @@ -164,11 +168,13 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable } /** Remove existing key from eBpf map. Return false if map was not modified. */ + @Override public boolean deleteEntry(K key) throws ErrnoException { return deleteMapEntry(mMapFd, key.writeToBytes()); } /** Returns {@code true} if this map contains no elements. */ + @Override public boolean isEmpty() throws ErrnoException { return getFirstKey() == null; } @@ -189,6 +195,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * * TODO: consider allowing null passed-in key. */ + @Override public K getNextKey(@NonNull K key) throws ErrnoException { Objects.requireNonNull(key); return getNextKeyInternal(key); @@ -202,11 +209,13 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable } /** Get the first key of eBpf map. */ + @Override public K getFirstKey() throws ErrnoException { return getNextKeyInternal(null); } /** Check whether a key exists in the map. */ + @Override public boolean containsKey(@NonNull K key) throws ErrnoException { Objects.requireNonNull(key); @@ -215,6 +224,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable } /** Retrieve a value from the map. Return null if there is no such key. */ + @Override public V getValue(@NonNull K key) throws ErrnoException { Objects.requireNonNull(key); final byte[] rawValue = getRawValue(key.writeToBytes()); @@ -239,6 +249,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * other structural modifications to the map, such as adding entries or deleting other entries. * Otherwise, iteration will result in undefined behaviour. */ + @Override public void forEach(BiConsumer<K, V> action) throws ErrnoException { @Nullable K nextKey = getFirstKey(); @@ -262,6 +273,7 @@ public class BpfMap<K extends Struct, V extends Struct> implements AutoCloseable * @throws ErrnoException if the map is already closed, if an error occurred during iteration, * or if a non-ENOENT error occurred when deleting a key. */ + @Override public void clear() throws ErrnoException { K key = getFirstKey(); while (key != null) { |