I use sqlite 3.16.2 in Android system and I have configured journal_mode=WAL,
threadsafe=1.
My understanding is that:
WAL => readers and only one writer can run at the same time.
threadsafe=1 => mutex is used in serialized mode so that two writers is
supported.
Is it correct?
But I ran a simple test:
Two processes will run sqlite3_open() respectively to open the same db. Then
both of the two processes will insert 10000 records(in Transaction) into the
db simultaneously.
But I find that:
Process A begin
Process A insert
Process B begin
Process B insert
Process A end
Process B end
Which I guess the Process B did not sleep at all?
And the count of records is less than 20000 at last.
So I think multiple write threads is not allowed even though I use
threadsafe=1 in wal mode?
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