Some external functions I wish to call may take a long time
and unnecessarily block other threads. This may lead to performance
regressions for fast functions as releasing/acquiring the GVL is not
cheap, but can improve performance for long-running functions
in multi-threaded applications.
This also means we must reacquire the GVL when calling Ruby-defined
callbacks for Fiddle::Closure, meaning we must detect whether the
current thread has the GVL by exporting ruby_thread_has_gvl_p
in internal.h
* ext/fiddle/function.c (struct nogvl_ffi_call_args):
new struct for GVL release
(nogvl_ffi_call): new function
(function_call): adjust for GVL release
[ruby-core:71642] [Feature #11607]
* ext/fiddle/closure.c (struct callback_args):
new struct for GVL acquire
(with_gvl_callback): adjusted original callback function
(callback): wrapper for conditional GVL acquire
* ext/fiddle/depend: add dependencies
* ext/fiddle/extconf.rb: include top_srcdir for internal.h
* internal.h (ruby_thread_has_gvl_p): expose for fiddle
* vm_core.h (ruby_thread_has_gvl_p): moved to internal.h
* test/fiddle/test_function.rb (test_nogvl_poll): new test
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52723 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/bigdecimal/bigdecimal.c: use RARRAY_CONST_PTR just fore
reference instead of RARRAY_PTR, to keep the array WB-protected.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52448 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
The `callback' function is not used outside of closure.c and
should not be able to cause namespace conflicts in compilers
without visibility pragmas.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52198 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
RUBY_LIBFFI_MODVERSION is not defined (usually on Windows).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40225 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/fiddle: Complete documentation of Fiddle. Patch by Vincent
Batts. [#5192]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32981 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
should be used to handle shorter return value. fix [Bug #3861]
[ruby-core:32504]
* ext/fiddle/closure.c (callback): ditto
* ext/fiddle/conversions.h (fiddle_generic): ditto
* ext/fiddle/conversions.c (value_to_generic): char, short and int
are strictly distinguished on big-endian CPU, e.g. sparc64.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32895 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
xmalloc() to allocate an array for arguments of callback procedure,
to prevent arguments from being swept by GC. [ruby-core:38546]
[Bug #4929]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32725 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
so that the content surely get initialized. [ruby-dev:42480]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29635 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
don't use ffi_closure_alloc, ffi_prep_closure_loc and
ffi_closure_free on MACOSX and __linux__.
[ruby-dev:41483] [ruby-dev:41214]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28315 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/fiddle/*: testing fiddle extension
* ext/dl/lib/dl.rb: Requiring fiddle if it is available
* ext/dl/lib/dl/callback.rb: using Fiddle if it is available
* ext/dl/lib/dl/func.rb: ditto
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27640 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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