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Null rust_task::cond on wakeup, add asserts and logging to block/wakeup.

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This commit is contained in:
Michael Bebenita 2010-07-28 14:45:44 -07:00 committed by Graydon Hoare
parent e327aa5093
commit 5db5eb0c55
1 changed files with 11 additions and 5 deletions
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16
src/rt/rust_task.cpp
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@ -529,23 +529,29 @@ rust_task::transition(ptr_vec<rust_task> *src, ptr_vec<rust_task> *dst)
void
rust_task::block(rust_cond *on)
{
I(dom, on);
log(rust_log::TASK, "Blocking on 0x%" PRIxPTR ", cond: 0x%" PRIxPTR,
(uintptr_t) on, (uintptr_t) cond);
A(dom, cond == NULL, "Cannot block an already blocked task.");
A(dom, on != NULL, "Cannot block on a NULL object.");
transition(&dom->running_tasks, &dom->blocked_tasks);
dom->log(rust_log::TASK,
"task 0x%" PRIxPTR " blocking on 0x%" PRIxPTR,
(uintptr_t)this,
(uintptr_t)on);
cond = on;
}
void
rust_task::wakeup(rust_cond *from)
{
A(dom, cond != NULL, "Cannot wake up unblocked task.");
log(rust_log::TASK, "Blocked on 0x%" PRIxPTR " woken up on 0x%" PRIxPTR,
(uintptr_t) cond, (uintptr_t) from);
A(dom, cond == from, "Cannot wake up blocked task on wrong condition.");
transition(&dom->blocked_tasks, &dom->running_tasks);
// TODO: Signaling every time the task is awaken is kind of silly,
// do this a nicer way.
dom->_progress.signal();
I(dom, cond == from);
cond = NULL;
}
void