1 files changed, 31 insertions, 0 deletions
diff --git a/cli/cache/common.rs b/cli/cache/common.rs
new file mode 100644
index 000000000..c01c1ab9a
--- /dev/null
+++ b/cli/cache/common.rs
@@ -0,0 +1,31 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::error::AnyError;
+use deno_runtime::deno_webstorage::rusqlite::Connection;
+
+/// Very fast non-cryptographically secure hash.
+pub fn fast_insecure_hash(bytes: &[u8]) -> u64 {
+  use std::hash::Hasher;
+  use twox_hash::XxHash64;
+
+  let mut hasher = XxHash64::default();
+  hasher.write(bytes);
+  hasher.finish()
+}
+
+/// Runs the common sqlite pragma.
+pub fn run_sqlite_pragma(conn: &Connection) -> Result<(), AnyError> {
+  // Enable write-ahead-logging and tweak some other stuff
+  let initial_pragmas = "
+    -- enable write-ahead-logging mode
+    PRAGMA journal_mode=WAL;
+    PRAGMA synchronous=NORMAL;
+    PRAGMA temp_store=memory;
+    PRAGMA page_size=4096;
+    PRAGMA mmap_size=6000000;
+    PRAGMA optimize;
+  ";
+
+  conn.execute_batch(initial_pragmas)?;
+  Ok(())
+}