omitted on Fedora 40 aarch64
(https://github.com/ruby/fiddle/pull/161)
I found working on Fedora 40 on aarch64 that
`test_dlopen_linker_script_input_linux` was omitted due to not finding
libncurses.so, since it is in /usr/lib64. This PR makes the glob a
little more portable.
444774c0c4
Fix GH-145
Rename `lib/fiddle/jruby.rb` to `lib/fiddle/ffi_backend.rb` as a generic
ffi gem API based implementation.
JRuby and TruffleRuby use `lib/fiddle/ffi_backend.rb`.
---------
Co-authored-by: Benoit Daloze <eregontp@gmail.com>
Fix GH-104
lib/fiddle/jruby.rb is based on
https://github.com/jruby/jruby/blob/master/lib/ruby/stdlib/fiddle/jruby.rb
.
Here are changes for it:
* Move `Fiddle::TYPE_*` to `Fiddle::Types::*`
* Add `Fiddle::Types::VARIADIC`
* Add `Fiddle::Types::CONST_STRING`
* Add `Fiddle::Types::BOOL`
* Add `Fiddle::Types::INT8_T`
* Add `Fiddle::Types::UINT8_T`
* Add `Fiddle::Types::INT16_T`
* Add `Fiddle::Types::UINT16_T`
* Add `Fiddle::Types::INT32_T`
* Add `Fiddle::Types::UINT32_T`
* Add `Fiddle::Types::INT64_T`
* Add `Fiddle::Types::UINT64_T`
* Add more `Fiddle::ALIGN_*` for the above new `Fiddle::Types::*`
* Add more `Fiddle::SIZEOF_*` for the above new `Fiddle::Types::*`
* Add support for specifying type as not only `Fiddle::Types::*` but
also `Symbol` like `:int`
* Add support for variable size arguments in `Fiddle::Function`
* Add `Fiddle::Closure#free`
* Add `Fiddle::Closure#freed?`
* Add `Fiddle::Error` as base the error class
* Add `Fiddle::Pointer#call_free` and stop using `FFI::AutoPointer` in
`Fiddle::Pointer`
* Add support for `Fiddle::Pointer.malloc {}` `Fiddle::Pointer`
* Add support for `Fiddle::Pointer#free=`
* Add `Fiddle::Pointer#freed?`
* Use binary string not C string for `Fiddle::Pointer#[]`
* Add `Fiddle::Handle.sym_defined?`
* Add `Fiddle::Handle#sym_defined?`
* Add `Fiddle::Handle::DEFAULT`
* Add `Fiddle::ClearedReferenceError`
* Add no-op `Fiddle::Pinned`
Some features are still "not implemented". So there are some "omit"s for
JRuby in tests.
It's for avoiding calling release on exit via GC. If it's happen, Ruby
will be crashed because Fiddle::MemoryView's finalizer may refer other
Ruby object. In exit phrase, the referred Ruby object may be already
freed.
02915f13de
(https://github.com/ruby/fiddle/pull/123)
This commit adds two new methods, `Fiddle::Pointer.read` and
`Fiddle::Pointer.write`. Both methods take an address, and will read or
write bytes at that address respectively.
For example we can read from an address without making a Pointer object:
```ruby
Fiddle::Pointer.read(address, 5) # read 5 bytes
```
We can also write to an address without allocating a Pointer object:
```ruby
Fiddle::Pointer.write(address, "bytes") # write 5 bytes
```
This allows us to read / write memory at arbitrary addresses without
instantiating a new `Fiddle::Pointer` object.
Examples where this API would be useful
[1](f03481d28b/lib/tenderjit/fiddle_hacks.rb (L26-L28))
[2](77c8daa2d4/lib/ruby_vm/rjit/c_pointer.rb (L193))
[3](77c8daa2d4/lib/ruby_vm/rjit/c_pointer.rb (L284))
I also added a writer method for the same reasons as the reader.
---------
04238cefed
Co-authored-by: Sutou Kouhei <kou@clear-code.com>
I would like to check if a symbol is defined before trying to access it.
Some symbols aren't available on all platforms, so instead of raising an
exception, I want to check if it's defined first.
Today we have to do:
```ruby
begin
addr = Fiddle::Handle.sym("something")
# do something
rescue Fiddle::DLError
end
```
I want to write this:
```ruby
if Fiddle::Handle.sym_defined?("something")
addr = Fiddle::Handle.sym("something")
# do something
end
```
9d3371de13
Co-authored-by: Sutou Kouhei <kou@clear-code.com>
This helps to reduce repetition in code. Instead of doing "TYPE_*"
everywhere, you can do `include Fiddle::Types`, and write the type name
directly.
This PR is to help reduce repetition when writing Fiddle code. Right now
we have to type `TYPE_` everywhere, and you also have to include all of
`Fiddle` to access `TYPE_*` constants. With this change, you can just
include `Fiddle::Types` and it will shorten your code and also you only
have to include those constants.
Here is an example before:
```ruby
require "fiddle"
module MMAP
# All Fiddle constants included
include Fiddle
def self.make_function name, args, ret
ptr = Handle::DEFAULT[name]
func = Function.new ptr, args, ret, name: name
define_singleton_method name, &func.to_proc
end
make_function "munmap", [TYPE_VOIDP, # addr
TYPE_SIZE_T], # len
TYPE_INT
make_function "mmap", [TYPE_VOIDP,
TYPE_SIZE_T,
TYPE_INT,
TYPE_INT,
TYPE_INT,
TYPE_INT], TYPE_VOIDP
make_function "mprotect", [TYPE_VOIDP, TYPE_SIZE_T, TYPE_INT], TYPE_INT
end
```
After:
```ruby
require "fiddle"
module MMAP
# Only type names included
include Fiddle::Types
def self.make_function name, args, ret
ptr = Fiddle::Handle::DEFAULT[name]
func = Fiddle::Function.new ptr, args, ret, name: name
define_singleton_method name, &func.to_proc
end
make_function "munmap", [VOIDP, # addr
SIZE_T], # len
INT
make_function "mmap", [VOIDP, SIZE_T, INT, INT, INT, INT], VOIDP
make_function "mprotect", [VOIDP, SIZE_T, INT], INT
end
```
We only need to import the type names, and you don't have to type
`TYPE_` over and over. I think this makes Fiddle code easier to read.
49fa7233e5
Co-authored-by: Sutou Kouhei <kou@clear-code.com>
This commit adds constants for unsigned values. Currently we can use `-`
to mean "unsigned", but I think having a specific name makes Fiddle more
user friendly. This commit continues to support `-`, but introduces
negative constants with "unsigned" names
I think this will help to eliminate [this
code](3a56bf0bcc/lib/mjit/c_type.rb (L31-L38))
2bef0f1082
Co-authored-by: Sutou Kouhei <kou@clear-code.com>
* Add "offsetof" to Struct classes
I need to get the offset of a member inside a struct without allocating
the struct. This patch adds an "offsetof" class method to structs that
are generated.
The usage is like this:
```ruby
MyStruct = struct [
"int64_t i",
"char c",
]
MyStruct.offsetof("i") # => 0
MyStruct.offsetof("c") # => 8
```
* Update test/fiddle/test_c_struct_builder.rb
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
4e3b60c5b6
Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
