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bugfix.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2542 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -59,6 +59,18 @@ to wrap the given PtrData object which is, for example, created by DL::malloc().
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DL::malloc() is a function to allocate a memory by using the C library function
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malloc().
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We can define a callback using the module function "callback" as follows:
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module Foo
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extend DL::Importable
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def my_comp(str1,str2)
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str1 <=> str2
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end
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COMPARE = callback "int my_comp(char*,char*)"
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end
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where Foo::COMPARE is a Symbol object which invokes the method "my_comp".
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DL::Importable module is very useful. However, we sometimes encounter a case
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that we must directly use low-level functions such as dlsym(). In such case,
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we would use DL module functions. They are described in next section.
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@ -88,6 +88,7 @@ module DL
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["long", "L", nil, nil, nil, nil],
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["float", "F", nil, nil, nil, nil],
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["double", "D", nil, nil, nil, nil],
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[/char\s*\*/,"S",nil, nil, nil, nil],
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[/.+\*/, "P", nil, nil, nil, nil],
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[/.+\[\]/, "a", nil, nil, nil, nil],
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["void", "0", nil, nil, nil, nil],
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@ -35,6 +35,11 @@ module LIBC
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"int tz_minuteswest",
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"int tz_dsttime",
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]
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def my_compare(ptr1, ptr2)
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ptr1.ptr.to_s <=> ptr2.ptr.to_s
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end
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COMPARE = callback "int my_compare(char**, char**)"
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end
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@ -54,7 +59,7 @@ p LIBC.strcat("a", "b")
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ary = ["a","c","b"]
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ptr = ary.to_ptr
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LIBC.qsort(ptr, ary.length, DL.sizeof('P'), $cb1)
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LIBC.qsort(ptr, ary.length, DL.sizeof('P'), LIBC::COMPARE)
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p ptr.to_a('S', ary.length)
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tv = LIBC::Timeval.malloc
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