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rt: Make rust_port_detach less contentious

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It still utterly dominates some benchmarks with busy waiting, but at least it
doesn't create lock contention while doing so.
This commit is contained in:
Brian Anderson
2012-03-04 15:36:32 -08:00
parent 0a5603cb58
commit 4c4a2320eb
7 changed files with 23 additions and 20 deletions
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3
src/rt/rust_builtin.cpp
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@@ -492,7 +492,7 @@ extern "C" CDECL void
del_port(rust_port *port) {
rust_task *task = rust_task_thread::get_task();
LOG(task, comm, "del_port(0x%" PRIxPTR ")", (uintptr_t) port);
A(task->thread, port->ref_count == 1, "Expected port ref_count == 1");
A(task->thread, port->get_ref_count() == 1, "Expected port ref_count == 1");
port->deref();
}
@@ -522,7 +522,6 @@ chan_id_send(type_desc *t, rust_task_id target_task_id,
rust_port *port = target_task->get_port_by_id(target_port_id);
if(port) {
port->send(sptr);
scoped_lock with(target_task->port_lock);
port->deref();
sent = true;
} else {