[sql] Enable HAVE_USLEEP for more platforms.
HAVE_USLEEP affects SQLite's sleep implementation, which is used when
SQLite waits for a lock to clear. Browser databases are generally
uncontended, but this case could happen for WebDatabase in the renderer.
BUG=none
Review URL: https://codereview.chromium.org/827523004
Cr-Commit-Position: refs/heads/master@{#312460}
diff --git a/sql/sqlite_features_unittest.cc b/sql/sqlite_features_unittest.cc
index 1aff80e..987d3a1 100644
--- a/sql/sqlite_features_unittest.cc
+++ b/sql/sqlite_features_unittest.cc
@@ -112,4 +112,21 @@
}
#endif
+#if !defined(USE_SYSTEM_SQLITE)
+// Verify that Chromium's SQLite is compiled with HAVE_USLEEP defined. With
+// HAVE_USLEEP, SQLite uses usleep() with millisecond granularity. Otherwise it
+// uses sleep() with second granularity.
+TEST_F(SQLiteFeaturesTest, UsesUsleep) {
+ base::TimeTicks before = base::TimeTicks::Now();
+ sqlite3_sleep(1);
+ base::TimeDelta delta = base::TimeTicks::Now() - before;
+
+ // It is not impossible for this to be over 1000 if things are compiled the
+ // right way. But it is very unlikely, most platforms seem to be around
+ // <TBD>.
+ LOG(ERROR) << "Milliseconds: " << delta.InMilliseconds();
+ EXPECT_LT(delta.InMilliseconds(), 1000);
+}
+#endif
+
} // namespace
