On 08/19, Roland McGrath wrote:
On 08/16, Roland McGrath wrote:
Now that you merged c93fecc925ea7567168f0c94414b9021de2708c5
get_utrace_lock() must not succeed if utrace-reap == T, this becomes
a bit off-topic. However, I thought about relaxing the dead check in
get_utrace_lock(),
On 08/19, Roland McGrath wrote:
Wait. It doesn't break this. It only breaks -EALREADY contract. And
I don't understand why this is bad.
The -EALREADY contract lets you have a report_death callback that does all
your cleanup and then returns UTRACE_DETACH.
I think this is possible without
On 08/19, Roland McGrath wrote:
OK, instead of filling utrace_detached_ops{} we can change start_callback()
- if (want UTRACE_EVENT(QUIESCE)) {
+ if ((want UTRACE_EVENT(QUIESCE)) || ops == detached_ops) {
If we're going to have a special-case check for utrace_detached_ops,
On 08/19, Roland McGrath wrote:
I think in the longer term mark_engine_detached() should not change
engine-flags at all but add QUIESCE to -utrace_flags. However, this
breaks utrace_maybe_reap(reap = true) and we should avoid the race
with finish_callback() which clears -reporting after
