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authorSverker Eriksson <[email protected]>2015-11-20 19:45:29 +0100
committerSverker Eriksson <[email protected]>2016-04-07 18:41:47 +0200
commit539ce190ba8f8842c24b17f3257c44cd850d7e01 (patch)
tree44fdc375d19068ca9434f943bb3d23bdfe79c570 /lib/jinterface/java_src
parent9c80b9ec06fc0ca89dcc8d797a2dbc408a162098 (diff)
downloadotp-539ce190ba8f8842c24b17f3257c44cd850d7e01.tar.gz
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jinterface: Support 32-bit creation values
Diffstat (limited to 'lib/jinterface/java_src')
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java54
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java47
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java50
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpExternal.java3
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java46
-rw-r--r--lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java153
6 files changed, 279 insertions, 74 deletions
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
index 20b7ff6a7f..66b4475a9e 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPid.java
@@ -27,6 +27,7 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
// don't change this!
private static final long serialVersionUID = 1664394142301803659L;
+ private final int tag;
private final String node;
private final int id;
private final int serial;
@@ -44,6 +45,7 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
public OtpErlangPid(final OtpLocalNode self) {
final OtpErlangPid p = self.createPid();
+ tag = p.tag;
id = p.id;
serial = p.serial;
creation = p.creation;
@@ -65,6 +67,7 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
throws OtpErlangDecodeException {
final OtpErlangPid p = buf.read_pid();
+ tag = p.tag;
node = p.node();
id = p.id();
serial = p.serial();
@@ -85,15 +88,52 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
* used.
*
* @param creation
- * yet another arbitrary number. Only the low order 2 bits will
+ * yet another arbitrary number. Ony the low order 2 bits will
* be used.
*/
public OtpErlangPid(final String node, final int id, final int serial,
- final int creation) {
- this.node = node;
- this.id = id & 0x7fff; // 15 bits
- this.serial = serial & 0x1fff; // 13 bits
- this.creation = creation & 0x03; // 2 bits
+ final int creation) {
+ this(OtpExternal.pidTag, node, id, serial, creation);
+ }
+
+ /**
+ * Create an Erlang pid from its components.
+ *
+ * @param tag
+ * the external format to be compliant with
+ * OtpExternal.pidTag where only a subset of the bits are significant (see other constructor).
+ * OtpExternal.newPidTag where all 32 bits of id,serial and creation are significant.
+ * newPidTag can only be decoded by OTP-19 and newer.
+ * @param node
+ * the nodename.
+ *
+ * @param id
+ * an arbitrary number.
+ *
+ * @param serial
+ * another arbitrary number.
+ *
+ * @param creation
+ * yet another arbitrary number.
+ */
+ protected OtpErlangPid(final int tag, final String node, final int id,
+ final int serial, final int creation) {
+ this.tag = tag;
+ this.node = node;
+ if (tag == OtpExternal.pidTag) {
+ this.id = id & 0x7fff; // 15 bits
+ this.serial = serial & 0x1fff; // 13 bits
+ this.creation = creation & 0x03; // 2 bits
+ }
+ else { // allow all 32 bits for newPidTag
+ this.id = id;
+ this.serial = serial;
+ this.creation = creation;
+ }
+ }
+
+ protected int tag() {
+ return tag;
}
/**
@@ -151,7 +191,7 @@ public class OtpErlangPid extends OtpErlangObject implements Comparable<Object>
*/
@Override
public void encode(final OtpOutputStream buf) {
- buf.write_pid(node, id, serial, creation);
+ buf.write_pid(this);
}
/**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
index a6198d56cc..16c8d2ed85 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangPort.java
@@ -26,6 +26,7 @@ public class OtpErlangPort extends OtpErlangObject {
// don't change this!
private static final long serialVersionUID = 4037115468007644704L;
+ private final int tag;
private final String node;
private final int id;
private final int creation;
@@ -42,6 +43,7 @@ public class OtpErlangPort extends OtpErlangObject {
private OtpErlangPort(final OtpSelf self) {
final OtpErlangPort p = self.createPort();
+ tag = p.tag;
id = p.id;
creation = p.creation;
node = p.node;
@@ -62,6 +64,7 @@ public class OtpErlangPort extends OtpErlangObject {
throws OtpErlangDecodeException {
final OtpErlangPort p = buf.read_port();
+ tag = p.tag;
node = p.node();
id = p.id();
creation = p.creation();
@@ -77,13 +80,45 @@ public class OtpErlangPort extends OtpErlangObject {
* an arbitrary number. Only the low order 28 bits will be used.
*
* @param creation
- * another arbitrary number. Only the low order 2 bits will be
- * used.
+ * another arbitrary number. Only the low order 2 bits will be used.
*/
public OtpErlangPort(final String node, final int id, final int creation) {
- this.node = node;
- this.id = id & 0xfffffff; // 28 bits
- this.creation = creation & 0x03; // 2 bits
+ this(OtpExternal.portTag, node, id, creation);
+ }
+
+ /**
+ * Create an Erlang port from its components.
+ *
+ * @param tag
+ * the external format to be compliant with.
+ * OtpExternal.portTag where only a subset of the bits are used (see other constructor)
+ * OtpExternal.newPortTag where all 32 bits of id and creation are significant.
+ * newPortTag can only be decoded by OTP-19 and newer.
+ * @param node
+ * the nodename.
+ *
+ * @param id
+ * an arbitrary number. Only the low order 28 bits will be used.
+ *
+ * @param creation
+ * another arbitrary number.
+ */
+ public OtpErlangPort(final int tag, final String node, final int id,
+ final int creation) {
+ this.tag = tag;
+ this.node = node;
+ if (tag == OtpExternal.portTag) {
+ this.id = id & 0xfffffff; // 28 bits
+ this.creation = creation & 0x3; // 2 bits
+ }
+ else {
+ this.id = id;
+ this.creation = creation;
+ }
+ }
+
+ protected int tag() {
+ return tag;
}
/**
@@ -132,7 +167,7 @@ public class OtpErlangPort extends OtpErlangObject {
*/
@Override
public void encode(final OtpOutputStream buf) {
- buf.write_port(node, id, creation);
+ buf.write_port(this);
}
/**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
index 8b57e7265b..c0a3a4061d 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpErlangRef.java
@@ -28,11 +28,13 @@ public class OtpErlangRef extends OtpErlangObject {
// don't change this!
private static final long serialVersionUID = -7022666480768586521L;
+ private final int tag;
private final String node;
private final int creation;
// old style refs have one 18-bit id
// r6 "new" refs have array of ids, first one is only 18 bits however
+ // 19 "newer" refs have full 32-bits for creation and for ids[0]
private int ids[] = null;
/**
@@ -47,6 +49,7 @@ public class OtpErlangRef extends OtpErlangObject {
public OtpErlangRef(final OtpLocalNode self) {
final OtpErlangRef r = self.createRef();
+ tag = r.tag;
ids = r.ids;
creation = r.creation;
node = r.node;
@@ -67,6 +70,7 @@ public class OtpErlangRef extends OtpErlangObject {
throws OtpErlangDecodeException {
final OtpErlangRef r = buf.read_ref();
+ tag = r.tag;
node = r.node();
creation = r.creation();
@@ -83,10 +87,10 @@ public class OtpErlangRef extends OtpErlangObject {
* an arbitrary number. Only the low order 18 bits will be used.
*
* @param creation
- * another arbitrary number. Only the low order 2 bits will be
- * used.
+ * another arbitrary number.
*/
public OtpErlangRef(final String node, final int id, final int creation) {
+ this.tag = OtpExternal.newRefTag;
this.node = node;
ids = new int[1];
ids[0] = id & 0x3ffff; // 18 bits
@@ -110,10 +114,34 @@ public class OtpErlangRef extends OtpErlangObject {
* used.
*/
public OtpErlangRef(final String node, final int[] ids, final int creation) {
+ this(OtpExternal.newRefTag, node, ids, creation);
+ }
+
+ /**
+ * Create a new(er) style Erlang ref from its components.
+ *
+ * @param tag
+ * the external format to be compliant with.
+ * OtpExternal.newRefTag where only a subset of the bits are used (see other constructor)
+ * OtpExternal.newerRefTag where all bits of ids and creation are used.
+ * newerPortTag can only be decoded by OTP-19 and newer.
+ *
+ * @param node
+ * the nodename.
+ *
+ * @param ids
+ * an array of arbitrary numbers. At most three numbers
+ * will be read from the array.
+ *
+ * @param creation
+ * another arbitrary number.
+ */
+ public OtpErlangRef(final int tag, final String node, final int[] ids,
+ final int creation) {
+ this.tag = tag;
this.node = node;
- this.creation = creation & 0x03; // 2 bits
- // use at most 82 bits (18 + 32 + 32)
+ // use at most 3 words
int len = ids.length;
this.ids = new int[3];
this.ids[0] = 0;
@@ -124,7 +152,17 @@ public class OtpErlangRef extends OtpErlangObject {
len = 3;
}
System.arraycopy(ids, 0, this.ids, 0, len);
- this.ids[0] &= 0x3ffff; // only 18 significant bits in first number
+ if (tag == OtpExternal.newRefTag) {
+ this.creation = creation & 0x3;
+ this.ids[0] &= 0x3ffff; // only 18 significant bits in first number
+ }
+ else {
+ this.creation = creation;
+ }
+ }
+
+ protected int tag() {
+ return tag;
}
/**
@@ -202,7 +240,7 @@ public class OtpErlangRef extends OtpErlangObject {
*/
@Override
public void encode(final OtpOutputStream buf) {
- buf.write_ref(node, ids, creation);
+ buf.write_ref(this);
}
/**
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpExternal.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpExternal.java
index 4645f25590..e19e7304b7 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpExternal.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpExternal.java
@@ -46,9 +46,11 @@ public class OtpExternal {
/** The tag used for ports */
public static final int portTag = 102;
+ public static final int newPortTag = 89;
/** The tag used for PIDs */
public static final int pidTag = 103;
+ public static final int newPidTag = 88;
/** The tag used for small tuples */
public static final int smallTupleTag = 104;
@@ -85,6 +87,7 @@ public class OtpExternal {
/** The tag used for new style references */
public static final int newRefTag = 114;
+ public static final int newerRefTag = 90;
/** The tag used for maps */
public static final int mapTag = 116;
diff --git a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
index fa0815fbf0..50d825fb80 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpInputStream.java
@@ -954,18 +954,23 @@ public class OtpInputStream extends ByteArrayInputStream {
tag = read1skip_version();
- if (tag != OtpExternal.pidTag) {
+ if (tag != OtpExternal.pidTag &&
+ tag != OtpExternal.newPidTag) {
throw new OtpErlangDecodeException(
"Wrong tag encountered, expected " + OtpExternal.pidTag
+ + " or " + OtpExternal.newPidTag
+ ", got " + tag);
}
node = read_atom();
- id = read4BE() & 0x7fff; // 15 bits
- serial = read4BE() & 0x1fff; // 13 bits
- creation = read1() & 0x03; // 2 bits
-
- return new OtpErlangPid(node, id, serial, creation);
+ id = read4BE();
+ serial = read4BE();
+ if (tag == OtpExternal.pidTag)
+ creation = read1();
+ else
+ creation = read4BE();
+
+ return new OtpErlangPid(tag, node, id, serial, creation);
}
/**
@@ -984,17 +989,22 @@ public class OtpInputStream extends ByteArrayInputStream {
tag = read1skip_version();
- if (tag != OtpExternal.portTag) {
+ if (tag != OtpExternal.portTag &&
+ tag != OtpExternal.newPortTag) {
throw new OtpErlangDecodeException(
"Wrong tag encountered, expected " + OtpExternal.portTag
+ + " or " + OtpExternal.newPortTag
+ ", got " + tag);
}
node = read_atom();
- id = read4BE() & 0xfffffff; // 28 bits
- creation = read1() & 0x03; // 2 bits
+ id = read4BE();
+ if (tag == OtpExternal.portTag)
+ creation = read1();
+ else
+ creation = read4BE();
- return new OtpErlangPort(node, id, creation);
+ return new OtpErlangPort(tag, node, id, creation);
}
/**
@@ -1021,16 +1031,23 @@ public class OtpInputStream extends ByteArrayInputStream {
return new OtpErlangRef(node, id, creation);
case OtpExternal.newRefTag:
+ case OtpExternal.newerRefTag:
final int arity = read2BE();
+ if (arity > 3) {
+ throw new OtpErlangDecodeException(
+ "Ref arity " + arity + " too large ");
+ }
node = read_atom();
- creation = read1() & 0x03; // 2 bits
+ if (tag == OtpExternal.newRefTag)
+ creation = read1();
+ else
+ creation = read4BE();
final int[] ids = new int[arity];
for (int i = 0; i < arity; i++) {
ids[i] = read4BE();
}
- ids[0] &= 0x3ffff; // first id gets truncated to 18 bits
- return new OtpErlangRef(node, ids, creation);
+ return new OtpErlangRef(tag, node, ids, creation);
default:
throw new OtpErlangDecodeException(
@@ -1200,15 +1217,18 @@ public class OtpInputStream extends ByteArrayInputStream {
case OtpExternal.refTag:
case OtpExternal.newRefTag:
+ case OtpExternal.newerRefTag:
return new OtpErlangRef(this);
case OtpExternal.mapTag:
return new OtpErlangMap(this);
case OtpExternal.portTag:
+ case OtpExternal.newPortTag:
return new OtpErlangPort(this);
case OtpExternal.pidTag:
+ case OtpExternal.newPidTag:
return new OtpErlangPid(this);
case OtpExternal.stringTag:
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 4faae2a157..10e48ffc43 100644
--- a/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
+++ b/lib/jinterface/java_src/com/ericsson/otp/erlang/OtpOutputStream.java
@@ -728,14 +728,38 @@ public class OtpOutputStream extends ByteArrayOutputStream {
*/
public void write_pid(final String node, final int id, final int serial,
final int creation) {
- write1(OtpExternal.pidTag);
- write_atom(node);
- write4BE(id & 0x7fff); // 15 bits
- write4BE(serial & 0x1fff); // 13 bits
- write1(creation & 0x3); // 2 bits
+ write1(OtpExternal.pidTag);
+ write_atom(node);
+ write4BE(id & 0x7fff); // 15 bits
+ write4BE(serial & 0x1fff); // 13 bits
+ write1(creation & 0x3); // 2 bits
}
/**
+ * Write an Erlang PID to the stream.
+ *
+ * @param pid
+ * the pid
+ */
+ public void write_pid(OtpErlangPid pid) {
+ write1(pid.tag());
+ write_atom(pid.node());
+ write4BE(pid.id());
+ write4BE(pid.serial());
+ switch (pid.tag()) {
+ case OtpExternal.pidTag:
+ write1(pid.creation());
+ break;
+ case OtpExternal.newPidTag:
+ write4BE(pid.creation());
+ break;
+ default:
+ throw new AssertionError("Invalid pid tag " + pid.tag());
+ }
+ }
+
+
+ /**
* Write an Erlang port to the stream.
*
* @param node
@@ -745,15 +769,36 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* an arbitrary number. Only the low order 28 bits will be used.
*
* @param creation
- * another arbitrary number. Only the low order 2 bits will be
- * used.
- *
+ * another arbitrary number. Only the low order 2 bits will
+ * be used.
*/
public void write_port(final String node, final int id, final int creation) {
- write1(OtpExternal.portTag);
- write_atom(node);
- write4BE(id & 0xfffffff); // 28 bits
- write1(creation & 0x3); // 2 bits
+ write1(OtpExternal.portTag);
+ write_atom(node);
+ write4BE(id & 0xfffffff); // 28 bits
+ write1(creation & 0x3); // 2 bits
+ }
+
+ /**
+ * Write an Erlang port to the stream.
+ *
+ * @param port
+ * the port.
+ */
+ public void write_port(OtpErlangPort port) {
+ write1(port.tag());
+ write_atom(port.node());
+ write4BE(port.id());
+ switch (port.tag()) {
+ case OtpExternal.portTag:
+ write1(port.creation());
+ break;
+ case OtpExternal.newPortTag:
+ write4BE(port.creation());
+ break;
+ default:
+ throw new AssertionError("Invalid port tag " + port.tag());
+ }
}
/**
@@ -766,32 +811,31 @@ public class OtpOutputStream extends ByteArrayOutputStream {
* an arbitrary number. Only the low order 18 bits will be used.
*
* @param creation
- * another arbitrary number. Only the low order 2 bits will be
- * used.
+ * another arbitrary number.
*
*/
public void write_ref(final String node, final int id, final int creation) {
- write1(OtpExternal.refTag);
- write_atom(node);
- write4BE(id & 0x3ffff); // 18 bits
- write1(creation & 0x3); // 2 bits
+ /* Always encode as an extended reference; all
+ participating parties are now expected to be
+ able to decode extended references. */
+ int ids[] = new int[1];
+ ids[0] = id;
+ write_ref(node, ids, creation);
}
/**
- * Write a new style (R6 and later) Erlang ref to the stream.
+ * Write an Erlang ref to the stream.
*
* @param node
* the nodename.
*
* @param ids
* an array of arbitrary numbers. Only the low order 18 bits of
- * the first number will be used. If the array contains only one
- * number, an old style ref will be written instead. At most
- * three numbers will be read from the array.
+ * the first number will be used. At most three numbers
+ * will be read from the array.
*
* @param creation
- * another arbitrary number. Only the low order 2 bits will be
- * used.
+ * another arbitrary number. Only the low order 2 bits will be used.
*
*/
public void write_ref(final String node, final int[] ids, final int creation) {
@@ -800,29 +844,54 @@ public class OtpOutputStream extends ByteArrayOutputStream {
arity = 3; // max 3 words in ref
}
- if (arity == 1) {
- // use old method
- this.write_ref(node, ids[0], creation);
- } else {
- // r6 ref
- write1(OtpExternal.newRefTag);
+ write1(OtpExternal.newRefTag);
- // how many id values
- write2BE(arity);
+ // how many id values
+ write2BE(arity);
- write_atom(node);
+ write_atom(node);
- // note: creation BEFORE id in r6 ref
- write1(creation & 0x3); // 2 bits
+ write1(creation & 0x3); // 2 bits
- // first int gets truncated to 18 bits
- write4BE(ids[0] & 0x3ffff);
+ // first int gets truncated to 18 bits
+ write4BE(ids[0] & 0x3ffff);
- // remaining ones are left as is
- for (int i = 1; i < arity; i++) {
- write4BE(ids[i]);
- }
- }
+ // remaining ones are left as is
+ for (int i = 1; i < arity; i++) {
+ write4BE(ids[i]);
+ }
+ }
+
+ /**
+ * Write an Erlang ref to the stream.
+ *
+ * @param ref
+ * the reference
+ */
+ public void write_ref(OtpErlangRef ref) {
+ int[] ids = ref.ids();
+ int arity = ids.length;
+
+ write1(ref.tag());
+ write2BE(arity);
+ write_atom(ref.node());
+
+ switch (ref.tag()) {
+ case OtpExternal.newRefTag:
+ write1(ref.creation());
+ write4BE(ids[0] & 0x3ffff); // first word gets truncated to 18 bits
+ break;
+ case OtpExternal.newerRefTag:
+ write4BE(ref.creation());
+ write4BE(ids[0]); // full first word
+ break;
+ default:
+ throw new AssertionError("Invalid ref tag " + ref.tag());
+ }
+
+ for (int i = 1; i < arity; i++) {
+ write4BE(ids[i]);
+ }
}
/**