mirror/FairEmail
1
0
Fork 0
mirror of https://github.com/M66B/FairEmail.git synced 2025-01-19 13:48:58 +00:00
Code Issues Releases Wiki Activity

Use 3% memory as sqlite cache

Browse source
This commit is contained in:
M66B 2021-09-04 20:16:05 +02:00
parent ecd07306ae
commit ddbd823c55
1 changed files with 9 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
app/src/main/java/eu/faircode/email/DB.java
View file

@ -2,6 +2,7 @@ package eu.faircode.email;
import static eu.faircode.email.ServiceAuthenticator.AUTH_TYPE_PASSWORD;
import android.app.ActivityManager;
import android.content.Context;
import android.content.SharedPreferences;
import android.database.Cursor;
@ -118,7 +119,7 @@ public abstract class DB extends RoomDatabase {
private static final String DB_NAME = "fairemail";
private static final int DB_CHECKPOINT = 1000; // requery/sqlite-android default
private static final int DB_CACHE_SIZE = -5000; // https://www.sqlite.org/pragma.html#pragma_cache_size
private static final int DB_CACHE_PERCENTAGE = 3;
private static final String[] DB_TABLES = new String[]{
"identity", "account", "folder", "message", "attachment", "operation", "contact", "certificate", "answer", "rule", "log"};
@ -400,8 +401,13 @@ public abstract class DB extends RoomDatabase {
Log.i("Get PRAGMA " + pragma + "=" + (cursor.moveToNext() ? cursor.getString(0) : "?"));
}
Log.i("Set PRAGMA cache_size=" + DB_CACHE_SIZE);
try (Cursor cursor = db.query("PRAGMA cache_size=" + DB_CACHE_SIZE + ";", null)) {
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
int class_mb = am.getMemoryClass();
int cache_size = class_mb * 1024 * 100 / DB_CACHE_PERCENTAGE;
// https://www.sqlite.org/pragma.html#pragma_cache_size
Log.i("Set PRAGMA cache_size=" + cache_size);
try (Cursor cursor = db.query("PRAGMA cache_size=" + cache_size + ";", null)) {
cursor.moveToNext(); // required
}