event_manager: Change compiled trace search strategy and
disable trace when isReadAhead.
(1) Get compiled trace file path from sqlite.
(2) If not exists, try the prebuilt path.
Measured the overhead of looking up compiled trace path in db.
It's less than 1 ms.
Bug: 140429498
Test: Make
Test: Run an app with a compiled trace and path stored in db.
Prefetching is preformed and tracing is not.
Test: atest --host -v iorapd-host-tests
Change-Id: I965bc34ba7ed578031c696967e4386495e3ef21a
diff --git a/src/db/models.h b/src/db/models.h
index 94f82da..90acfc1 100644
--- a/src/db/models.h
+++ b/src/db/models.h
@@ -766,8 +766,8 @@
std::string query = "SELECT * FROM app_launch_histories "
"WHERE activity_id = ?1 AND"
" temperature = 1 AND"
- " trace_enabled = TRUE"
- " intent_started_ns != NULL;";
+ " trace_enabled = TRUE AND"
+ " intent_started_ns IS NOT NULL;";
DbStatement stmt = DbStatement::Prepare(db, query, activity_id);
std::vector<AppLaunchHistoryModel> result;
@@ -778,6 +778,7 @@
p.temperature,
p.trace_enabled,
p.readahead_enabled,
+ p.intent_started_ns,
p.total_time_ns,
p.report_fully_drawn_ns)) {
result.push_back(p);
@@ -978,6 +979,28 @@
}
public:
+ static std::optional<PrefetchFileModel> SelectByPackageNameActivityName(
+ DbHandle db, const std::string& package_name, const std::string& activity_name) {
+ ScopedLockDb lock{db};
+
+ const char* sql =
+ "SELECT prefetch_files.id, prefetch_files.activity_id, prefetch_files.file_path "
+ "FROM prefetch_files "
+ "INNER JOIN activities ON activities.id = prefetch_files.activity_id "
+ "INNER JOIN packages ON packages.id = activities.package_id "
+ "WHERE packages.name = ? AND activities.name = ? ";
+
+ DbStatement stmt = DbStatement::Prepare(db, sql, package_name, activity_name);
+
+ PrefetchFileModel p{db};
+
+ if (!DbQueryBuilder::SelectOnce(stmt, p.id, p.activity_id, p.file_path)) {
+ return std::nullopt;
+ }
+
+ return p;
+ }
+
static std::optional<PrefetchFileModel> Insert(DbHandle db,
int activity_id,
std::string file_path) {