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bugfix.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2542 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ttate 2002-06-10 18:23:39 +00:00
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12
ext/dl/doc/dl.txt
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@ -59,6 +59,18 @@ to wrap the given PtrData object which is, for example, created by DL::malloc().
DL::malloc() is a function to allocate a memory by using the C library function
malloc().
We can define a callback using the module function "callback" as follows:
module Foo
extend DL::Importable
def my_comp(str1,str2)
str1 <=> str2
end
COMPARE = callback "int my_comp(char*,char*)"
end
where Foo::COMPARE is a Symbol object which invokes the method "my_comp".
DL::Importable module is very useful. However, we sometimes encounter a case
that we must directly use low-level functions such as dlsym(). In such case,
we would use DL module functions. They are described in next section.