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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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ttate 2002-10-02 14:28:40 +00:00
parent 71c41cf5a5
commit 0c767620cd
1 changed files with 5 additions and 6 deletions
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11
ext/dl/doc/dl.txt
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@ -47,17 +47,16 @@ struct and union which are defined in "dl/struct.rb" as follows:
require "dl/struct" require "dl/struct"
module LIBC module LIBC
extend DL::Importable extend DL::Importable
Timeval = struct [ # define the timeval structure. Timeval = struct [ # define timeval structure.
"long tv_sec", "long tv_sec",
"long tv_uses", "long tv_uses",
] ]
end end
val = LIBC::Timeval.malloc # allocate the memory. val = LIBC::Timeval.malloc # allocate memory.
The above example uses LIBC::Timeval.malloc, since we use LIBC::Timeval.new(ptr) Notice that the above example takes LIBC::Timeval.malloc to allocate memory,
to wrap the given PtrData object which is, for example, created by DL::malloc(). rather than LIBC::Timeval.new. It is because DL::Timeval.new is for wrapping
DL::malloc() is a function to allocate a memory by using the C library function an object, PtrData, which has already been created.
malloc().
We can define a callback using the module function "callback" as follows: We can define a callback using the module function "callback" as follows: