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authorttate <ttate@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2002-10-02 14:28:40 +0000
committerttate <ttate@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2002-10-02 14:28:40 +0000
commit0c767620cd00ec0739debea2b2a33f0f3e3ab65f (patch)
treebb4fe73fc9410336c0a3b0db14a4179a9100a3e2 /ext
parent71c41cf5a5a72e2f7f1f7b7ac1a14213f1fb52cc (diff)
Improve the description.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2922 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ext')
-rw-r--r--ext/dl/doc/dl.txt11
1 files changed, 5 insertions, 6 deletions
diff --git a/ext/dl/doc/dl.txt b/ext/dl/doc/dl.txt
index 4557d6d..44499bb 100644
--- a/ext/dl/doc/dl.txt
+++ b/ext/dl/doc/dl.txt
@@ -47,17 +47,16 @@ struct and union which are defined in "dl/struct.rb" as follows:
require "dl/struct"
module LIBC
extend DL::Importable
- Timeval = struct [ # define the timeval structure.
+ Timeval = struct [ # define timeval structure.
"long tv_sec",
"long tv_uses",
]
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)
-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().
+Notice that the above example takes LIBC::Timeval.malloc to allocate memory,
+rather than LIBC::Timeval.new. It is because DL::Timeval.new is for wrapping
+an object, PtrData, which has already been created.
We can define a callback using the module function "callback" as follows: