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Fixed sqlite cache size calculation

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M66B
2021-09-05 08:35:17 +02:00
parent 222d99f3fc
commit 6b94f7cdf6
1 changed files with 12 additions and 8 deletions
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20
app/src/main/java/eu/faircode/email/DB.java
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@@ -404,21 +404,25 @@ public abstract class DB extends RoomDatabase {
try {
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
int class_mb = am.getMemoryClass();
int cache_size = class_mb * 1024 * 100 / DB_CACHE_PERCENTAGE;
int cache_size = DB_CACHE_PERCENTAGE * class_mb * 1024 / 100;
if (cache_size > 2000) {
// https://www.sqlite.org/pragma.html#pragma_cache_size
cache_size = -cache_size; // kibibytes
// 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
}
Log.i("Set PRAGMA cache_size=" + cache_size);
try (Cursor cursor = db.query("PRAGMA cache_size=" + cache_size + ";", null)) {
cursor.moveToNext(); // required
}
try (Cursor cursor = db.query("PRAGMA cache_size;")) {
Log.i("Get PRAGMA cache_size=" + (cursor.moveToNext() ? cursor.getInt(0) : "?"));
try (Cursor cursor = db.query("PRAGMA cache_size;")) {
Log.i("Get PRAGMA cache_size=" + (cursor.moveToNext() ? cursor.getInt(0) : "?"));
}
}
} catch (Throwable ex) {
Log.e(ex);
}
// Prevent long running operations from getting an exclusive lock
Log.i("Set PRAGMA cache_spill=0");
try (Cursor cursor = db.query("PRAGMA cache_spill=0;", null)) {
cursor.moveToNext(); // required