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Atomic reference counting for tasks.

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This commit is contained in:
Eric Holk
2011-07-27 14:51:25 -07:00
parent a5fe66e706
commit 279844ce9f
8 changed files with 43 additions and 77 deletions
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23
src/rt/rust_task.cpp
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@@ -64,7 +64,7 @@ size_t const callee_save_fp = 0;
rust_task::rust_task(rust_scheduler *sched, rust_task_list *state,
rust_task *spawner, const char *name) :
maybe_proxy<rust_task>(this),
ref_count(1),
stk(NULL),
runtime_sp(0),
rust_sp(0),
@@ -92,10 +92,6 @@ rust_task::rust_task(rust_scheduler *sched, rust_task_list *state,
stk = new_stk(this, 0);
rust_sp = stk->limit;
if (spawner == NULL) {
ref_count = 0;
}
}
rust_task::~rust_task()
@@ -131,10 +127,6 @@ void task_start_wrapper(spawn_args *a)
LOG(task, task, "task exited with value %d", rval);
LOG(task, task, "task ref_count: %d", task->ref_count);
A(task->sched, task->ref_count >= 0,
"Task ref_count should not be negative on exit!");
task->die();
task->lock.lock();
task->notify_tasks_waiting_to_join();
@@ -263,17 +255,10 @@ rust_task::notify_tasks_waiting_to_join() {
while (tasks_waiting_to_join.is_empty() == false) {
LOG(this, task, "notify_tasks_waiting_to_join: %d",
tasks_waiting_to_join.size());
maybe_proxy<rust_task> *waiting_task = 0;
rust_task *waiting_task = 0;
tasks_waiting_to_join.pop(&waiting_task);
if (waiting_task->is_proxy()) {
notify_message::send(notify_message::WAKEUP, "wakeup",
get_handle(), waiting_task->as_proxy()->handle());
delete waiting_task;
} else {
rust_task *task = waiting_task->referent();
if (task->blocked() == true) {
task->wakeup(this);
}
if (waiting_task->blocked() == true) {
waiting_task->wakeup(this);
}
}
}