ruby.git/ext/fiddle/fiddle.h, branch v3_0_4

Import fiddle-1.0.4 (#3860)

2020-12-11T00:41:12+00:00

I don't use tool/sync_default_gem.rb because the last sync was incomplete.

Co-authored-by: Hiroshi SHIBATA 
Co-authored-by: Alan Wu 
Co-authored-by: sinisterchipmunk 
Co-authored-by: Sutou Kouhei

[ruby/fiddle] Add a "pinning" reference (#44)

2020-11-18T00:05:13+00:00

* Add a "pinning" reference

A `Fiddle::Pinned` objects will prevent the objects they point to from
moving.  This is useful in the case where you need to pass a reference
to a C extension that keeps the address in a global and needs the
address to be stable.

For example:

```ruby
class Foo
  A = "hi" # this is an embedded string

  some_c_function A # A might move!
end
```

If `A` moves, then the underlying string buffer may also move.
`Fiddle::Pinned` will prevent the object from moving:

```ruby
class Foo
  A = "hi" # this is an embedded string

  A_pinner = Fiddle::Pinned.new(A) # :nodoc:

  some_c_function A # A can't move because of `Fiddle::Pinned`
end
```

This is a similar strategy to what Graal uses:

  https://www.graalvm.org/sdk/javadoc/org/graalvm/nativeimage/PinnedObject.html#getObject--

* rename global to match exception name

* Introduce generic Fiddle::Error and rearrange error classes

Fiddle::Error is the generic exception base class for Fiddle exceptions.
This commit introduces the class and rearranges Fiddle exceptions to
inherit from it.

https://github.com/ruby/fiddle/commit/ac52d00223

[ruby/fiddle] Add support for specifying types by name as String or Symbol

2020-11-18T00:05:13+00:00

For example, :voidp equals to Fiddle::TYPE_VOID_P.

https://github.com/ruby/fiddle/commit/3b4de54899

[ruby/fiddle] Add TYPE_CONST_STRING and SIZEOF_CONST_STRING for "const char *"

2020-11-18T00:05:13+00:00

Add rb_fiddle_ prefix to conversion functions.h to keep backward
compatibility but value_to_generic() isn't safe for TYPE_CONST_STRING
and not String src. Use rb_fiddle_value_to_generic() instead.

https://github.com/ruby/fiddle/commit/0ffcaa39e5

[ruby/fiddle] Add support for variadic arguments

2020-06-27T14:54:08+00:00

GitHub: fix GH-39

Reported by kojix2. Thanks!!!

https://github.com/ruby/fiddle/commit/6c4cb904dc

* ext/dl/*: remove DL as it is replaced by Fiddle.

2014-10-31T21:13:09+00:00

  [Feature #5458] Thanks to Jonan Scheffler 
  for this patch

* test/dl/*: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48217 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/fiddle/fiddle.c: adding alignment constants for compatibility

2012-11-28T00:02:49+00:00

  with DL.
* ext/fiddle/fiddle.h: ditto
* ext/fiddle/lib/fiddle/cparser.rb: importing the C parser for DL
  backwards compatibility.
* ext/fiddle/lib/fiddle/import.rb: importing the import DSL for DL
  backwards compatibility.
* ext/fiddle/lib/fiddle/pack.rb: importing structure pack for DL
  backwards compatibility.
* ext/fiddle/lib/fiddle/value.rb: ditto
* ext/fiddle/lib/fiddle/struct.rb: importing struct DSL for DL backwards
  compatibility.
* test/dl/test_c_struct_entry.rb: importing tests
* test/dl/test_c_union_entity.rb: ditto
* test/dl/test_cparser.rb: ditto
* test/dl/test_import.rb: ditto
* test/fiddle/test_c_struct_entry.rb: ditto
* test/fiddle/test_c_union_entity.rb: ditto
* test/fiddle/test_cparser.rb: ditto
* test/fiddle/test_import.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37914 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/fiddle/handle.c: Make Fiddle independent of DL, copy DL::Handle

2012-11-27T19:54:50+00:00

  to Fiddle::Handle.
* ext/fiddle/pointer.c: Make Fiddle independent of DL, copy
  DL::Pointer to Fiddle::Pointer.
* test/fiddle/test_func.rb: relevent tests
* test/fiddle/test_handle.rb: ditto
* test/fiddle/test_pointer.rb: ditto
* ext/dl/lib/dl/struct.rb: use Fiddle::Pointer if available
* ext/fiddle/extconf.rb: check for dlfcn.h
* ext/fiddle/fiddle.c: add constants for sizeof() things
* ext/fiddle/fiddle.h: include dlfcn.h
* ext/fiddle/function.c: expose a C function for creating new
  Fiddle::Function objects.
* ext/fiddle/lib/fiddle.rb: include constants for dl backwards compat
* ext/fiddle/lib/fiddle/function.rb: read the pointer from the
  function for dl backwards compat.
* test/dl/test_callback.rb: check the addresses of the pointers rather
  than their types.
* test/fiddle/helper.rb: remove dependency on dl
* test/fiddle/test_closure.rb: ditto
* test/fiddle/test_fiddle.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37907 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

reverting r37881

2012-11-27T05:59:34+00:00

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37891 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/fiddle/handle.c: Make Fiddle independent of DL, copy DL::Handle

2012-11-27T01:38:41+00:00

  to Fiddle::Handle.
* ext/fiddle/pointer.c: Make Fiddle independent of DL, copy
  DL::Pointer to Fiddle::Pointer.
* test/fiddle/test_func.rb: relevent tests
* test/fiddle/test_handle.rb: ditto
* test/fiddle/test_pointer.rb: ditto
* ext/dl/lib/dl/struct.rb: use Fiddle::Pointer if available
* ext/fiddle/extconf.rb: check for dlfcn.h
* ext/fiddle/fiddle.c: add constants for sizeof() things
* ext/fiddle/fiddle.h: include dlfcn.h
* ext/fiddle/function.c: expose a C function for creating new
  Fiddle::Function objects.
* ext/fiddle/lib/fiddle.rb: include constants for dl backwards compat
* ext/fiddle/lib/fiddle/function.rb: read the pointer from the
  function for dl backwards compat.
* test/dl/test_callback.rb: check the addresses of the pointers rather
  than their types.
* test/fiddle/helper.rb: remove dependency on dl
* test/fiddle/test_closure.rb: ditto
* test/fiddle/test_fiddle.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37881 b2dd03c8-39d4-4d8f-98ff-823fe69b080e