ruby.git/ext/fiddle/handle.c, branch v3_0_4

[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] Remove taint support (#21)

2019-10-24T10:34:49+00:00

Ruby 2.7 deprecates taint and it no longer has an effect.
The lack of taint support should not cause a problem in
previous Ruby versions.
https://github.com/ruby/fiddle/commit/18d6fb6915

* ext/fiddle/handle.c: check tainted string arguments.

2015-12-16T12:08:49+00:00

  Patch provided by tenderlove and nobu.

* test/fiddle/test_handle.rb (class TestHandle): add test for above.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53153 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/**/.c (_memsize): same as r52986 for extensions.

2015-12-09T01:01:17+00:00

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52988 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* include/ruby/ruby.h: $SAFE=2 is now obsolete.

2015-06-18T14:21:03+00:00

* dir.c, ext/fiddle/handle.c, ext/socket/basicsocket.c, file.c
  gc.c, io.c, process.c, safe.c, signal.c, win32/file.c:
  removed code for $SAFE=2
* test/erb/test_erb.rb, test/fiddle/test_handle.rb
  test/ruby/test_env.rb: removed tests for $SAFE=2.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50958 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

handle.c: suppress warnings

2014-12-21T05:51:23+00:00

* ext/fiddle/handle.c (CHECK_DLERROR): suppress warnings for using
  the result of an assignment as a condition without parentheses.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48914 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

handle.c: suppress a warning

2014-12-21T05:26:20+00:00

* ext/fiddle/handle.c (rb_fiddle_handle_initialize): suppress an
  unused-but-set-variable warning.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48912 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/dl, ext/fiddle: fix memory leak

2014-03-08T04:46:57+00:00

* ext/dl/cptr.c (dlptr_free), ext/dl/handle.c (dlhandle_free),
  ext/fiddle/handle.c (fiddle_handle_free),
  ext/fiddle/pointer.c (fiddle_ptr_free): fix memory leak.
  based on the patch Heesob Park at [ruby-dev:48021] [Bug #9599].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45291 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/fiddle/*: [DOC] More doc on dlopen and RTLD_DEFAULT from r42186

2013-07-26T05:06:57+00:00

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42187 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* ext/fiddle/lib/fiddle.rb: [DOC] Document Fiddle.dlopen(nil)

2013-07-26T04:11:27+00:00

* ext/fiddle/handle.c: [DOC] Document Fiddle::Handle.new(nil)


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42184 b2dd03c8-39d4-4d8f-98ff-823fe69b080e