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Try to prevent long queue lengths.

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This commit is contained in:
Jacob Dufault 2018-03-19 20:01:23 -07:00
parent c7e5299bee
commit 7c1155392a
1 changed files with 25 additions and 4 deletions
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29
src/import_pipeline.cc
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@ -45,6 +45,22 @@ MAKE_REFLECT_STRUCT(Out_Progress::Params,
activeThreads);
MAKE_REFLECT_STRUCT(Out_Progress, jsonrpc, method, params);
// Instead of processing messages forever, we only process upto
// |kIterationSize| messages of a type at one time. While the import time
// likely stays the same, this should reduce overall queue lengths which means
// the user gets a usable index faster.
struct IterationLoop {
const int kIterationSize = 100;
int count = 0;
bool Next() {
return count++ < kIterationSize;
}
void Reset() {
count = 0;
}
};
struct IModificationTimestampFetcher {
virtual ~IModificationTimestampFetcher() = default;
virtual optional<int64_t> GetModificationTime(const std::string& path) = 0;
@ -522,7 +538,8 @@ bool IndexMergeIndexUpdates() {
return false;
bool did_merge = false;
while (true) {
IterationLoop loop;
while (loop.Next()) {
optional<Index_OnIndexed> to_join = queue->on_indexed.TryPopBack();
if (!to_join) {
queue->on_indexed.PushFront(std::move(*root));
@ -599,7 +616,8 @@ void Indexer_Main(Config* config,
// Build one index per-indexer, as building the index acquires a global lock.
auto indexer = IIndexer::MakeClangIndexer();
while (true) {
IterationLoop loop;
while (loop.Next()) {
bool did_work = false;
{
@ -726,6 +744,7 @@ void QueryDb_OnIndexed(QueueManager* queue,
import_manager->DoneQueryDbImport(updated_file.value.path);
}
}
} // namespace
bool QueryDb_ImportMain(Config* config,
@ -740,7 +759,8 @@ bool QueryDb_ImportMain(Config* config,
bool did_work = false;
while (true) {
IterationLoop loop;
while (loop.Next()) {
optional<Index_DoIdMap> request = queue->do_id_map.TryPopFront();
if (!request)
break;
@ -748,7 +768,8 @@ bool QueryDb_ImportMain(Config* config,
QueryDb_DoIdMap(queue, db, import_manager, &*request);
}
while (true) {
loop.Reset();
while (loop.Next()) {
optional<Index_OnIndexed> response = queue->on_indexed.TryPopFront();
if (!response)
break;