[notmuch] Multithreaded access

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+Date: Mon, 23 Nov 2009 22:07:42 +1100\r
+From: Peter Wang <novalazy@gmail.com>\r
+To: notmuch@notmuchmail.org\r
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+Subject: [notmuch] Multithreaded access\r
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+\r
+Hi,\r
+\r
+I am also toying around with a curses frontend for notmuch :-)\r
+One thing that I would really like to have is asynchronous search:\r
+I should be able to begin reading mail even while search results\r
+are rolling in.\r
+\r
+At the moment I'm using one read-only database_t* and creating multiple\r
+queries off it.  There's a background thread[1] slurping up <n> search\r
+results at a time, then passes them to the main thread.  The main thread\r
+also handles the pager.  When the user goes to open a thread, it creates\r
+a separate query_t so that it can look up the messages and their headers\r
+and filenames.\r
+\r
+It seems to work, but sometimes crashes.  I'm wondering if there is\r
+something inherently wrong with this design, so that I should try a\r
+different approach.\r
+\r
+A future concern is how to handle tag updates.  Could I open the database\r
+for writing in one thread, and read-only in another?\r
+\r
+Peter\r
+\r
+[1] Actually, I am playing around with Go at the same time so they are\r
+really goroutines.  Any problems could very well be related to this.\r