We're very happy to announce that X10 and X10DT 2.2.1 are now available for
download! To download the release, please see the X10 2.2.1 release page at
http://x10-lang.org/software/download-x10/release-list/322-x10-release-221.html
The release notes for version 2.2.1 are appended.
Release 2.2.1
MAJOR CHANGES
No major changes have been made to the language specification
in this release. The following major changes have been made to the
implementation and the class libraries.
The + and - operators were removed from the IntRange class and
replaced by a translate method. The motivation for this API change
was to avoid a common programming mistake:
for (i in 0..n-1) { ... }
In the loop above, i actually ranges from -1 to n-1 because .. has higher
precedence than - (to support concise region products like 0..n*0..n).
In 2.2.1 this loop will be flagged as a compile time error; write it as:
for (i in 0..(n-1)) { ... }
Managed X10 now uses Java built-in primitives to implement unsigned
X10 structs (UInt, ULong, etc). This significantly improves the
performance of unsigned types with Managed X10.
We have implemented a new custom serialization protocol for Managed X10,
resulting in significant performance improvements for multi-place
programs
on Managed X10.
The built-in numeric structs (Int, ULong, Double, etc) now implement
the interfaces, Arithmetic, Bitwise and Ordered (as appropriate).
This enables writing generic code over types that implement common
operations
such as +, *, <=, etc.
Please consult the language specification for the details of
any minor language changes and specification clarifications made in
this release.
LIMITATIONS OF THIS RELEASE
The following features described in the 2.2.1 language manual do not
currently work and will be fixed in the subsequent releases:
- Non-static type definitions as class or interface members
(static type defs do work)
The constraint solver used by X10 typechecker is known to be incomplete
for situations in which a constraint implies an infinite number of
distinct constraints.
Additionally, the following features described in the language
manual do not currently work with the C++ backend and will be fixed in
the subsequent releases:
- Garbage collection on AIX
- Non-final generic instance methods
- Exception stack traces on Cygwin
As in previous releases, the X10 runtime uses a "busy wait" loop
in the worker threads that execute asyncs. A consequence of this is
that even if a place has no asyncs to execute, it will still consume
CPU cycles busy waiting for new asyncs to be created.
See XTENLANG-1012 for more details.
The generated C++ code requires g++ 4.2 or better to be compiled;
we do almost all of our testing against g++ 4.3.2. On AIX, you
may either use g++ 4.2 or better or xlC 10.1.0.4 or better.
SUMMARY OF ISSUES RESOLVED IN THIS RELEASE
Below is a summary of JIRA issues addressed for the X10 2.2.1
** New Features and Improvements
* [XTENLANG-1006] - CUDA: no functions
* [XTENLANG-1560] - constant propagator should propagate closure
literals
* [XTENLANG-1703] - Support "operator#(...)" syntax for invoking
operators
* [XTENLANG-2075] - Primitives should implement Arithmetic, Bitwise,
Ordered
* [XTENLANG-2130] - Enable constant folding for unsigned numeric
operations
* [XTENLANG-2419] - Performance of Array.reduce()
* [XTENLANG-2675] - Enable constant propagation of NullLit
* [XTENLANG-2679] - Reenable mapping unsigned types to Java primitives
* [XTENLANG-2787] - x10::lang::Place::_make is not inlined
* [XTENLANG-2791] - Use direct copy rather than memcpy for
serialization on little-endian platforms
* [XTENLANG-2792] - Bulk serialization of IndexedMemoryChunk[T] where T
is primitive
* [XTENLANG-2794] - Array.clear()
* [XTENLANG-2797] - Char should implement Ordered
* [XTENLANG-2798] - Implement caching boxed values in Java backend
* [XTENLANG-2799] - Enable operator inlining and privatization for
unsigned types in Java backend
* [XTENLANG-2805] - Faster comparison against null
* [XTENLANG-2813] - Remove obsolete IORuntimeException
* [XTENLANG-2818] - Support for non-virtual instance calls in Managed
X10
* [XTENLANG-2821] - Inline GrowableIndexedMemoryChunk.apply(int) for
better performance of ArrayList.apply(int)
* [XTENLANG-2829] - Use fast native implementations of Math.abs
* [XTENLANG-2847] - Allow the compiler to be canceled
* [XTENLANG-2859] - ClassCastException in ParsedName for handling
method selector
* [XTENLANG-2883] - DistArray.getLocalPortion()
* [XTENLANG-2920] - X10DT: progress view shows "Remote Compilation"
when compiling on localhost
** Bug
* [XTENLANG-1938] - Expressions should be allowed as statements (ie
allow expr; )
* [XTENLANG-1990] - Describe rt options in spec
* [XTENLANG-2016] - DYNAMIC_CALLS doesn't report an inserted check (and
STATIC_CALLS fails with an error)
* [XTENLANG-2293] - unreachable catch blocks
* [XTENLANG-2300] - gcc compilation error "multiple definition of
closure" for a closure in a inlinable method
* [XTENLANG-2376] - Runtime checking a constructor guard for a
constructor call (super/this)
* [XTENLANG-2663] - Integer_ConstraintWithVariable generates incorrect
code with optimization
* [XTENLANG-2680] - Override and implement virtual and interface method
with @Native is broken in Java backend
* [XTENLANG-2686] - Stop converting unknown Java exception to x10
* [XTENLANG-2712] - Dynamic casts not generated for new expressions on
macro-types.
* [XTENLANG-2729] - Should (1.0 as Any as Int) succeed or fail?
Interactions between upcasts and "user-defined" conversions
* [XTENLANG-2739] - LangSpec example using UInt causes post-compilation
error on Java back end (Structs30)
* [XTENLANG-2745] - Unreachable catch block for Exception is not
detected.
* [XTENLANG-2751] - Code cleanup pass causes post-compilation error
* [XTENLANG-2752] - Coercion of constant to unsigned type causes
InternalCompilerError
* [XTENLANG-2755] - java backend post compilation errors on
DYNAMIC_CHECKS
* [XTENLANG-2756] - Dispatcher for super interface method not generated
in Java backend
* [XTENLANG-2757] - Using local variable in type constraint in async
breaks postcompilatoin
* [XTENLANG-2760] - Unsigned types get lost when stored in constraints
* [XTENLANG-2762] - Another ClosureRemover bug in Java backend
(AsyncTest2)
* [XTENLANG-2765] - Octal literals are not checked for well-formedness
* [XTENLANG-2767] - Java backend code generation problem in
Issues/XTENLANG_2330.x10
* [XTENLANG-2768] - Struct with IndexedMemoryChunk field suffers
corruption by GC due to containsPtrs==false
* [XTENLANG-2770] - Test case fails the wrong way
* [XTENLANG-2771] - Compiler erroneously permits var locals to be used
in constraints (DepTypeInMethodRet1_MustFailCompile)
* [XTENLANG-2772] - Preserve type of IntLit for narrower than Int in
Java backend
* [XTENLANG-2773] - Missing boxing of String in Java backend
(Expressions3e9h)
* [XTENLANG-2774] - inlining causes non-generic closure declaration to
get generated after the call to it in a generic method in the C++ backend
* [XTENLANG-2776] - Spec's example in "Limitation: Runtime Constraint
Erasure" should be auto-checked
* [XTENLANG-2777] - Need a warning on unsound casts, with -VERBOSE at
least
* [XTENLANG-2778] - Get rid of "Offers" clauses from the auto-imported
grammar.
* [XTENLANG-2780] - Post-compilation errors when creating an array of
inner class type
* [XTENLANG-2781] - spec needs to describe propagation in inferred
types.
* [XTENLANG-2783] - Stop propagating String literal to closure body
(AtomicReferenceTest)
* [XTENLANG-2784] - Preserve declared type for numeric values
(Expressions1x7i)
* [XTENLANG-2790] - Inliner fails to replace this in closure when
inlining an instance method into a static method
* [XTENLANG-2801] - C++ backend:optimizer:post compilation fails at
element access on DistArray
* [XTENLANG-2802] - Inliner issue when inlining non-generic method into
generic method and c++ backend
* [XTENLANG-2807] - no error when use 8 for Octal number
* [XTENLANG-2809] - StringBuilder with null - SegFault
* [XTENLANG-2812] - Post-compilation error for SeqMethodCall1.x10
* [XTENLANG-2814] - StringBuilder insert() with null - SegFault
* [XTENLANG-2815] - Random: nextLong(): hangs with nextLong combination
* [XTENLANG-2816] - javac error compiling GlobalRef.evalAtHome
* [XTENLANG-2817] - Multi-place programs launched with the sockets
X10RT implementation seem to hang on exit
* [XTENLANG-2820] - x10.util.Vec not fully implemented?
* [XTENLANG-2822] - C++ backend cast injector casting to wrong type in
the inlined constructor. Instantiation problem?
* [XTENLANG-2827] - ITable lookup failure
* [XTENLANG-2828] - NativeClass problems with user-defined Java classes
* [XTENLANG-2830] - Deserializer cause javac error for a class with a
property
* [XTENLANG-2832] - Return code lost (incorrectly 0 from aborting
program) on multi-place (or single place, HOSTLIST set) program using
x10rt_sockets
* [XTENLANG-2834] - Bugs in GlobalRef Mortal object handling in Java
back-end
* [XTENLANG-2837] - anonymous class c++ backend NPE
* [XTENLANG-2838] - Desugarer violates its postcondition
* [XTENLANG-2839] - ClosureRemover Improvements
* [XTENLANG-2840] - Post-compilation error for SPECjbb2005
* [XTENLANG-2841] - GlobalRefs causing exceptions in some JVMs
* [XTENLANG-2842] - Eliminate + and - operators on IntRange to avoid
commom programming mistake of writing 0..n-1
* [XTENLANG-2850] - native c++ Comparable itable thunks not quite
standard
* [XTENLANG-2854] - Incorrect container for compiler generated abstract
method for each interface method implemented by an abstract class
* [XTENLANG-2863] - String + void can give a Java error, not an X10
one.
* [XTENLANG-2865] - var async capture broken in certain cases
* [XTENLANG-2877] - Region.eliminate eliminates wrong dimension
* [XTENLANG-2885] - First twist of Random.random() still not completely
random
* [XTENLANG-2890] - Post-compilation errors due to the lack of boxing
primitives for closure arguments (Exceptions, ExceptionsRemote,
FinishCrossMethodMultiAsync and M
ultiAsyncs)
* [XTENLANG-2891] - NullPointerException in the typechecker
* [XTENLANG-2893] - java.lang.NullPointerException in desugarer
(MatrixAddSubclass_MustFailCompile)
* [XTENLANG-2895] - co/contra-variance of function type not correctly
implemented in Java backend (ADA_005f)
* [XTENLANG-2896] - X10DT: failure to compile code which compiles fine
with x10c++
* [XTENLANG-2898] - booleans (and sometimes ints) lose their
Boolean-ness when boxed and put in arrays in the Java back end
* [XTENLANG-2906] - toronto testcase: PlaceLocalHandle.id overflow
(ADA_039f)
* [XTENLANG-2908] - X10DT: Can't rename newly created launch
configuration
* [XTENLANG-2909] - Closure inlining of generic closure constrained <:
struct breaks Managed codegen
* [XTENLANG-2914] - Assertion failure in constant propagator
(XTENLANG_2330)
* [XTENLANG-2919] - BlockBlockDist fails to cover for some combinations
of Region / MAX_PLACES
** Task
* [XTENLANG-2766] - Document static vs dynamic checking of numeric
conversions
For the details of JIRA issues fixed in this release, see
http://jira.codehaus.org/browse/XTENLANG/fixforversion/17131
Please use the X10 JIRA to report bugs, after ensuring the problem is
not already reported:
http://jira.codehaus.org/secure/IssueNavigator.jspa?reset=true&&pid=11812&resolution=-1
------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2dcopy1
_______________________________________________
X10-users mailing list
X10-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/x10-users
