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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Unreleased

Added

  • Default trait implemented for JObject, JString, JClass, and JByteBuffer (#199)

Changed

  • The release_string_utf_chars function has been marked as unsafe. (#334)

0.19.0 — 2021-01-24

Added

  • AutoArray and generic get_array_elements(), along with get_<type>_array_elements helpers. (#287)
  • size() method to AutoArray and AutoPrimitiveArray. (#278 / #287)
  • discard() method to AutoArray and AutoPrimitiveArray. (#275 / #287)

Changed

  • Removed AutoPrimitiveArray::commit(). (#290)
  • AutoByte/PrimitiveArray.commit() now returns Result. (#275)
  • Removed methods get/release/commit_byte/primitive_array_{elements|critical}. (#281)
  • Renamed methods get_auto_byte/long/primitive_array_{elements|critical} to get_byte/long/primitive_array_{elements|critical}. (#281)

0.18.0 — 2020-09-23

Added

  • JNIEnv#define_unnamed_class function that allows loading a class without specifying its name. The name is inferred from the class data. (#246)
  • SetStatic<type>Field. (#248)
  • TryFrom<JValue> for types inside JValue variants (#264).
  • Implemented Copy for JNIEnv (#255).
  • repr(transparent) attribute to JavaVM struct (#259)

Changed

  • Switch from error-chain to thiserror, making all errors Send. Also, support all JNI errors in the jni_error_code_to_result function and add more information to the InvalidArgList error. (#242)

0.17.0 — 2020-06-30

Added

  • Get/ReleaseByteArrayElements, and Get/ReleasePrimitiveArrayCritical. (#237)

0.16.0 — 2020-02-28

Fixed

  • Java VM instantiation with some MacOS configurations. (#220, #229, #230).

0.15.0 — 2020-02-28

Added

  • Ability to pass object wrappers that are convertible to JObject as arguments to the majority of JNIEnv methods without explicit conversion. (#213)
  • JNIEnv#is_same_object implementation. (#213)
  • JNIEnv#register_native_methods. (#214)
  • Conversion from Into<JObject> to JValue::Object.

Fixed

  • Passing null as class loader to define_class method now allowed according to the JNI specification. (#225)

0.14.0 — 2019-10-31

Changed

  • Relaxed some lifetime restrictions in JNIEnv to support the case when method, field ids; and global references to classes have a different (larger) lifetime than JNIEnv. (#209)

0.13.1 — 2019-08-22

Changed

  • Various documentation improvements.

0.13.0 — 2019-07-05

0.13 brings major improvements in thread management, allowing to attach the native threads permanently and safely; Executor for extra convenience and safety; and other improvements and fixes.

⚠️ If your code attaches native threads — make sure to check the updated documentation of JavaVM to learn about the new features!

Added

  • JavaVM::attach_current_thread_permanently method, which attaches the current thread and detaches it when the thread finishes. Daemon threads attached with JavaVM::attach_current_thread_as_daemon also automatically detach themselves when finished. The number of currently attached threads may be acquired using JavaVM::threads_attached method. (#179, #180)
  • Executor — a simple thread attachment manager which helps to safely execute a closure in attached thread context and to automatically free created local references at closure exit. (#186)

Changed

  • The default JNI API version in InitArgsBuilder from V1 to V8. (#178)
  • Extended the lifetimes of AutoLocal to make it more flexible. (#190)
  • Default exception type from checked java.lang.Exception to unchecked java.lang.RuntimeException. It is used implicitly when JNIEnv#throw is invoked with exception message: env.throw("Exception message"); however, for efficiency reasons, it is recommended to specify the exception type explicitly and use throw_new: env.throw_new(exception_type, "Exception message"). (#194)

Fixed

  • Native threads attached with JavaVM::attach_current_thread_as_daemon now automatically detach themselves on exit, preventing Java Thread leaks. (#179)
  • Local reference leaks in JList, JMap and JMapIter. (#190, #191)

0.12.3

Added

  • From<jboolean> implementation for JValue (#173)
  • Debug trait for InitArgsBuilder. (#175)
  • InitArgsBuilder#options returning the collected JVM options. (#177)

0.12.2

Changed

  • Updated documentation of GetXArrayRegion methods (#169)
  • Improved ABI compatibility on various platforms (#170)

0.12.1

This release does not bring code changes.

Changed

  • Updated project documentation.

0.12.0

Changed

  • JString, JMap and JavaStr and their respective iterators now require an extra lifetime so that they can now work with &'b JNIEnv<'a>, where 'a: 'b.

0.11.0

Highlights

This release brings various improvements and fixes, outlined below. The most notable changes are:

  • null is no longer represented as an Err with error kind NullPtr if it is a value of some nullable Java reference (not an indication of an error). Related issues: #136, #148, #163.
  • unsafe methods, providing a low-level API similar to JNI, has been marked safe and renamed to have _unchecked suffix. Such methods can be used to implement caching of class references and method IDs to improve performance in loops and frequently called Java callbacks. If you have such, check out the docs and one of early usages of this feature.

Added

  • Invocation API support on Windows and AppVeyor CI (#149)

Changed

  • push_local_frame, delete_global_ref and release_string_utf_chars no longer check for exceptions as they are safe to call if there is a pending exception (#124):

    • push_local_frame will now work in case of pending exceptions — as the spec requires; and fail in case of allocation errors
    • delete_global_ref and release_string_utf_chars won't print incorrect log messages

  • Rename some macros to better express their intent (see #123):

    • Rename jni_call to jni_non_null_call as it checks the return value to be non-null.
    • Rename jni_non_null_call (which may return nulls) to jni_non_void_call.

  • A lot of public methods of JNIEnv have been marked as safe, all unsafe code has been isolated inside internal macros. Methods with _unsafe suffixes have been renamed and now have _unchecked suffixes (#140)

  • from_str method of the JavaType has been replaced by the FromStr implementation

  • Implemented Sync for GlobalRef (#102).

  • Improvements in macro usage for JNI methods calls (#136):

    • call_static_method_unchecked and get_static_field_unchecked methods are allowed to return NULL object
    • Added checking for pending exception to the call_static_method_unchecked method (eliminated WARNING messages in log)

  • Further improvements in macro usage for JNI method calls (#150):

    • The new_global_ref() and new_local_ref() functions are allowed to work with NULL objects according to specification.
    • Fixed the family of functions new_direct_byte_buffer(), get_direct_buffer_address() and get_direct_buffer_capacity() by adding checking for null and error codes.
    • Increased tests coverage for JNIEnv functions.

  • Implemented Clone for JNIEnv (#147).

  • The get_superclass(), get_field_unchecked() and get_object_array_element() are allowed to return NULL object according to the specification (#163).

Fixed

  • The issue with early detaching of a thread by nested AttachGuard. (#139)

0.10.2

Added

  • JavaVM#get_java_vm_pointer to retrieve a JavaVM pointer (#98)
  • This changelog and other project documents (#106)

Changed

  • The project is moved to an organization (#104)
  • Updated versions of dependencies (#105)
  • Improved project documents (#107)

Fixed

  • Crate type of a shared library with native methods must be cdylib (#100)

0.10.1

  • No changes has been made to the Changelog until this release.