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Adopt debounce for highlighting and autosuggestions

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This prevents a thundering herd of threads for certain interactive
scenarios.
This commit is contained in:
ridiculousfish 2020-03-03 00:13:33 -08:00
parent bde2f2111d
commit e334becefb
1 changed files with 22 additions and 6 deletions
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20
src/reader.cpp
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@ -144,6 +144,20 @@ operation_context_t get_bg_context(const std::shared_ptr<environment_t> &env,
return operation_context_t{nullptr, *env, std::move(cancel_checker)};
}
/// Get the debouncer for autosuggestions and background highlighting.
/// These are deliberately leaked to avoid shutdown dtor registration.
static debounce_t &debounce_autosuggestions() {
const long kAutosuggetTimeoutMs = 500;
static debounce_t *res = new debounce_t(kAutosuggetTimeoutMs);
return *res;
}
static debounce_t &debounce_highlighting() {
const long kHighlightTimeoutMs = 500;
static debounce_t *res = new debounce_t(kHighlightTimeoutMs);
return *res;
}
bool edit_t::operator==(const edit_t &other) const {
return cursor_position_before_edit == other.cursor_position_before_edit &&
offset == other.offset && length == other.length && old == other.old &&
@ -1482,7 +1496,8 @@ void reader_data_t::update_autosuggestion() {
auto performer =
get_autosuggestion_performer(parser(), el->text(), el->position(), history);
auto shared_this = this->shared_from_this();
iothread_perform(performer, [shared_this](autosuggestion_result_t result) {
debounce_autosuggestions().perform(
performer, [shared_this](autosuggestion_result_t result) {
shared_this->autosuggest_completed(std::move(result));
});
}
@ -2226,7 +2241,8 @@ void reader_data_t::super_highlight_me_plenty(int match_highlight_pos_adjust, bo
} else {
// Highlighting including I/O proceeds in the background.
auto shared_this = this->shared_from_this();
iothread_perform(highlight_performer, [shared_this](highlight_result_t result) {
debounce_highlighting().perform(highlight_performer,
[shared_this](highlight_result_t result) {
shared_this->highlight_complete(std::move(result));
});
}