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Add constructor to H2FullPrunedBlockStore to specify cache size.

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This commit is contained in:
Matt Corallo 2012-10-20 23:52:53 -04:00 committed by Mike Hearn
parent a011948139
commit 739b2c6183
1 changed files with 29 additions and 0 deletions
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29
core/src/main/java/com/google/bitcoin/store/H2FullPrunedBlockStore.java
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@ -86,6 +86,13 @@ public class H2FullPrunedBlockStore implements FullPrunedBlockStore {
+ "CONSTRAINT openOutputs_fk FOREIGN KEY (id) REFERENCES openOutputsIndex(id)"
+ ")";
/**
* Creates a new H2FullPrunedBlockStore
* @param params A copy of the NetworkParameters used
* @param dbName The path to the database on disk
* @param fullStoreDepth The number of blocks of history stored in full (something like 1000 is pretty safe)
* @throws BlockStoreException if the database fails to open for any reason
*/
public H2FullPrunedBlockStore(NetworkParameters params, String dbName, int fullStoreDepth) throws BlockStoreException {
this.params = params;
this.fullStoreDepth = fullStoreDepth;
@ -113,6 +120,28 @@ public class H2FullPrunedBlockStore implements FullPrunedBlockStore {
}
}
/**
* Creates a new H2FullPrunedBlockStore with the given cache size
* @param params A copy of the NetworkParameters used
* @param dbName The path to the database on disk
* @param fullStoreDepth The number of blocks of history stored in full (something like 1000 is pretty safe)
* @param cacheSize The number of kilobytes to dedicate to H2 Cache (the default value of 16MB (16384) is a safe bet
* to achieve good performance/cost when importing blocks from disk, past 32MB makes little sense,
* and below 4MB sees a sharp drop in performance)
* @throws BlockStoreException if the database fails to open for any reason
*/
public H2FullPrunedBlockStore(NetworkParameters params, String dbName, int fullStoreDepth, int cacheSize) throws BlockStoreException {
this(params, dbName, fullStoreDepth);
try {
Statement s = conn.get().createStatement();
s.executeUpdate("SET CACHE_SIZE " + cacheSize);
s.close();
} catch (SQLException e) {
throw new BlockStoreException(e);
}
}
private synchronized void maybeConnect() throws BlockStoreException {
try {
if (conn.get() != null)