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Remove erase_list from process_clean_after_marking

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We don't need to maintain an erase_list in this function any more.
Simply remove jobs that are completed.
This commit is contained in:
ridiculousfish 2019-05-01 16:25:30 -07:00
parent 3dfaa192da
commit 55e3270ac4
1 changed files with 5 additions and 36 deletions
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41
src/proc.cpp
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@ -568,10 +568,6 @@ static bool process_clean_after_marking(bool allow_interactive) {
// Remove all disowned jobs.
remove_disowned_jobs(jobs());
// If we ever drop the `static bool locked` above, this should be changed to a local or
// thread-local vector instead of a static vector. It is only static to reduce heap allocations.
static std::vector<shared_ptr<job_t>> erase_list;
// Accumulate exit events into a new list, which we fire after the list manipulation is
// complete.
std::vector<event_t> exit_events;
@ -614,46 +610,19 @@ static bool process_clean_after_marking(bool allow_interactive) {
exit_events.push_back(
proc_create_event(L"JOB_EXIT", event_type_t::job_exit, j->job_id, 0));
}
// Remove us from the job list if we're complete.
if (j->is_completed()) {
erase_list.push_back(j);
}
}
if (!erase_list.empty()) {
// The intersection of the two lists is typically O(m*n), but we know the order
// of the entries in erase_list is the same as their matches in jobs(), so we can
// use that to our advantage.
auto to_erase = erase_list.begin();
jobs().erase(std::remove_if(jobs().begin(), jobs().end(),
[&to_erase](const shared_ptr<job_t> &j) {
if (to_erase != erase_list.end() && *to_erase == j) {
++to_erase;
return true;
}
return false;
}), jobs().end());
if (should_debug(2)) {
// Assertions prevent the application from continuing in case of invalid state. If we
// did not remove all objects from the list, it's not bad enough to abort and die, but
// leave this check here so that we can be alerted to the situtaion if running at a
// higher debug level. Or just remove it. But I wouldn't want to be the person that has
// to debug this without even this soft assertion in place when some C++ standard
// library decides to make std::remove_if iterate backwards or in random order!
assert(to_erase == erase_list.end()
&& "Not all jobs slated for erasure have been erased!");
}
}
// Remove completed jobs.
// Do this before calling out to user code in the event handler below, to ensure an event
// handler doesn't remove jobs on our behalf.
auto is_complete = [](const shared_ptr<job_t> &j) { return j->is_completed(); };
jobs().erase(std::remove_if(jobs().begin(), jobs().end(), is_complete), jobs().end());
// Post pending exit events.
for (const auto &evt : exit_events) {
event_fire(evt);
}
erase_list.clear();
if (printed) {
fflush(stdout);
}