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+<!-- keywords: sqlite3_interrupt sqlite3_is_interrupted -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Interrupt A Long-Running Query</h2>
+</div>
+<blockquote><pre>
+void sqlite3_interrupt(sqlite3*);
+int sqlite3_is_interrupted(sqlite3*);
+</pre></blockquote>
+<p>
+This function causes any pending database operation to abort and
+return at its earliest opportunity. This routine is typically
+called in response to a user action such as pressing "Cancel"
+or Ctrl-C where the user wants a long query operation to halt
+immediately.</p>
+
+<p>It is safe to call this routine from a thread different from the
+thread that is currently running the database operation.  But it
+is not safe to call this routine with a <a href="../c3ref/sqlite3.html">database connection</a> that
+is closed or might close before sqlite3_interrupt() returns.</p>
+
+<p>If an SQL operation is very nearly finished at the time when
+sqlite3_interrupt() is called, then it might not have an opportunity
+to be interrupted and might continue to completion.</p>
+
+<p>An SQL operation that is interrupted will return <a href="../rescode.html#interrupt">SQLITE_INTERRUPT</a>.
+If the interrupted SQL operation is an INSERT, UPDATE, or DELETE
+that is inside an explicit transaction, then the entire transaction
+will be rolled back automatically.</p>
+
+<p>The sqlite3_interrupt(D) call is in effect until all currently running
+SQL statements on <a href="../c3ref/sqlite3.html">database connection</a> D complete.  Any new SQL statements
+that are started after the sqlite3_interrupt() call and before the
+running statement count reaches zero are interrupted as if they had been
+running prior to the sqlite3_interrupt() call.  New SQL statements
+that are started after the running statement count reaches zero are
+not effected by the sqlite3_interrupt().
+A call to sqlite3_interrupt(D) that occurs when there are no running
+SQL statements is a no-op and has no effect on SQL statements
+that are started after the sqlite3_interrupt() call returns.</p>
+
+<p>The <a href="../c3ref/interrupt.html">sqlite3_is_interrupted(D)</a> interface can be used to determine whether
+or not an interrupt is currently in effect for <a href="../c3ref/sqlite3.html">database connection</a> D.
+It returns 1 if an interrupt is currently in effect, or 0 otherwise.
+</p><p>See also lists of
+  <a href="../c3ref/objlist.html">Objects</a>,
+  <a href="../c3ref/constlist.html">Constants</a>, and
+  <a href="../c3ref/funclist.html">Functions</a>.</p>
+