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authorNico Kruber <[email protected]>2013-01-28 19:43:01 +0100
committerFredrik Gustafsson <[email protected]>2013-02-04 09:52:34 +0100
commitbae8d6a4f357f8c9be0661e80a9d163fba56ee7c (patch)
tree479fdc435b2a50d9a930b86643b76441ded16c92 /lib/jinterface/java_src/com/ericsson/otp
parent9239bca48cad7653b43f89f71c49b3d0be682c51 (diff)
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jinterface: new limited OutputStream implementation without the need to resize
(saves memory re-allocations)
Diffstat (limited to 'lib/jinterface/java_src/com/ericsson/otp')
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java14
1 files changed, 7 insertions, 7 deletions
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
index 541df20369..1512f9f2aa 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
@@ -48,7 +48,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
private static final BigDecimal ten = new BigDecimal(10.0);
private static final BigDecimal one = new BigDecimal(1.0);
- private boolean fixedSize = false;
+ private int fixedSize = Integer.MAX_VALUE;
/**
* Create a stream with the default initial size (2048 bytes).
@@ -124,16 +124,17 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* @param minCapacity the desired minimum capacity
*/
public void ensureCapacity(int minCapacity) {
+ if (minCapacity > fixedSize) {
+ throw new IllegalArgumentException("Trying to increase fixed-size buffer");
+ }
int oldCapacity = super.buf.length;
if (minCapacity > oldCapacity) {
- if (fixedSize) {
- throw new IllegalArgumentException("Trying to increase fixed-size buffer");
- }
int newCapacity = (oldCapacity * 3)/2 + 1;
if (newCapacity < oldCapacity + defaultIncrement)
newCapacity = oldCapacity + defaultIncrement;
if (newCapacity < minCapacity)
newCapacity = minCapacity;
+ newCapacity = Math.min(fixedSize, newCapacity);
// minCapacity is usually close to size, so this is a win:
final byte[] tmp = new byte[newCapacity];
System.arraycopy(super.buf, 0, tmp, 0, super.count);
@@ -822,8 +823,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
// we need destCount bytes for an uncompressed term
// -> if compression uses more, use the uncompressed term!
int destCount = startCount + oos.size();
- this.resize(destCount);
- this.fixedSize = true;
+ this.fixedSize = destCount;
final java.util.zip.DeflaterOutputStream dos = new java.util.zip.DeflaterOutputStream(
this);
try {
@@ -848,7 +848,7 @@ public class OtpOutputStream extends ByteArrayOutputStream {
throw new java.lang.IllegalArgumentException(
"Intermediate stream failed for Erlang object " + o);
} finally {
- this.fixedSize = false;
+ this.fixedSize = Integer.MAX_VALUE;
}
}
}