I created the following dll in C language.
void example(int*a)
{
for(inti=0;i<10;++i){
a[i]+=1;
}
}
How can I pass the ruby array hoge[0,0,0,0,0,0,0,0] to this dll and receive the processed array hoge'[1,1,1,1,1,1,1] on the ruby side?
The dll call is
Win32 API.new(DLL_NAME, 'example', 'p', 'v')
is used.
I look forward to hearing from you.
ruby c array
I don't have windows, so I'm sorry for the mac information, but ruby2.2.0 was done below.
#test.rb
require "fiddle/import"
module M
extend Fiddle::Importer
dload "libtest.dylib"
external "void example(int*a)"
end
hoge=[0]*10
hoge
hoge=hoge.pack('i*')
M.example(hoge)
hoge.unpack('i*')
The results are as follows:
$ruby test.rb
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
From ruby 2.2, I heard that they use fiddles.I think it can also be used on Windows.
library fiddle
Library for handling dynamic link libraries, such as .dll and .so.
http://docs.ruby-lang.org/ja/2.1.0/library/fiddle.html
I am using pack, unpack because it seems that it needs to be converted into a string to exchange arrays.
I want to pass the array of ○○ to the function
If you want to invoke this, use Array#pack as follows:
http://docs.ruby-lang.org/ja/2.0.0/library/fiddle=2fimport.html
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