GitHub: fix GH-72
Users can't use WSAGetLastError() with Ruby 3.0 or later because
rb_funcall() resets the last socket error internally.
Users can get the last socket error by Fiddle.win32_last_socket_error.
Reported by Kentaro Hayashi. Thanks!!!
76158db00a
This lets us cast a Fiddle::Function to a block, allowing is to write
things like:
```ruby
f = Fiddle::Function.new(@libc['strcpy'], [TYPE_VOIDP, TYPE_VOIDP], TYPE_VOIDP)
define_method :strcpy, &f
```
I don't use tool/sync_default_gem.rb because the last sync was incomplete.
Co-authored-by: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>
Co-authored-by: sinisterchipmunk <sinisterchipmunk@gmail.com>
Co-authored-by: Sutou Kouhei <kou@clear-code.com>
* 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.
ac52d00223
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.
0ffcaa39e5
It loads `ext/fiddle/lib/fiddle/version.rb`, which causes constant
redefinition warning:
20200523T153003Z.log.html.gz
```
[ 6317/20193] TestDefaultGems#test_validate_gemspec/home/chkbuild/chkbuild/tmp/build/20200523T153003Z/ruby/ext/fiddle/lib/fiddle/version.rb:2: warning: already initialized constant Fiddle::VERSION
/home/chkbuild/chkbuild/tmp/build/20200523T153003Z/ruby/.ext/common/fiddle/version.rb:2: warning: previous definition of VERSION was here
= 0.16 s
```
This changeset read the version by manual parsing hack which is also
used in stringio and zlib.
