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core: Channels are just port ids

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This commit is contained in:
Brian Anderson
2012-03-14 23:08:47 -07:00
parent c414b78afe
commit 561511e628
5 changed files with 17 additions and 27 deletions
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16
src/libcore/comm.rs
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@@ -38,10 +38,9 @@ enum rust_port {}
#[abi = "cdecl"]
native mod rustrt {
fn get_task_id() -> task_id;
fn chan_id_send<T: send>(t: *sys::type_desc,
target_task: task_id, target_port: port_id,
data: T) -> libc::uintptr_t;
fn rust_port_id_send<T: send>(t: *sys::type_desc,
target_port: port_id,
data: T) -> libc::uintptr_t;
fn new_port(unit_sz: libc::size_t) -> *rust_port;
fn del_port(po: *rust_port);
@@ -63,7 +62,6 @@ native mod rusti {
fn call_with_retptr<T: send>(&&f: fn@(*uint)) -> T;
}
type task_id = int;
type port_id = int;
// It's critical that this only have one variant, so it has a record
@@ -79,7 +77,7 @@ data will be silently dropped. Channels may be duplicated and
themselves transmitted over other channels.
"]
enum chan<T: send> {
chan_t(task_id, port_id)
chan_t(port_id)
}
resource port_ptr<T: send>(po: *rust_port) {
@@ -119,8 +117,8 @@ Sends data over a channel. The sent data is moved into the channel,
whereupon the caller loses access to it.
"]
fn send<T: send>(ch: chan<T>, -data: T) {
let chan_t(t, p) = ch;
let res = rustrt::chan_id_send(sys::get_type_desc::<T>(), t, p, data);
let chan_t(p) = ch;
let res = rustrt::rust_port_id_send(sys::get_type_desc::<T>(), p, data);
if res != 0u unsafe {
// Data sent successfully
unsafe::leak(data);
@@ -217,7 +215,7 @@ Constructs a channel. The channel is bound to the port used to
construct it.
"]
fn chan<T: send>(p: port<T>) -> chan<T> {
chan_t(rustrt::get_task_id(), rustrt::get_port_id(***p))
chan_t(rustrt::get_port_id(***p))
}
#[test]