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core: convert io::Res over to the Drop trait

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This commit is contained in:
Erick Tryzelaar 2013-01-22 07:51:00 -08:00
parent e4d4a1499b
commit e22d2bc4bc
1 changed files with 6 additions and 3 deletions
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9
src/libcore/io.rs
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@ -1108,10 +1108,13 @@ pub mod fsync {
// Artifacts that need to fsync on destruction // Artifacts that need to fsync on destruction
pub struct Res<t: Copy> { pub struct Res<t: Copy> {
arg: Arg<t>, arg: Arg<t>,
drop { }
impl<T: Copy> Res<T>: Drop {
fn finalize(&self) {
match self.arg.opt_level { match self.arg.opt_level {
option::None => (), None => (),
option::Some(level) => { Some(level) => {
// fail hard if not succesful // fail hard if not succesful
assert((self.arg.fsync_fn)(self.arg.val, level) != -1); assert((self.arg.fsync_fn)(self.arg.val, level) != -1);
} }