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diff --git a/www/c3ref/interrupt.html b/www/c3ref/interrupt.html new file mode 100644 index 0000000..1a75665 --- /dev/null +++ b/www/c3ref/interrupt.html @@ -0,0 +1,166 @@ +<!DOCTYPE html> +<html><head> +<meta name="viewport" content="width=device-width, initial-scale=1.0"> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<link href="../sqlite.css" rel="stylesheet"> +<title>Interrupt A Long-Running Query</title> +<!-- path=../ --> +</head> +<body> +<div class=nosearch> +<a href="../index.html"> +<img class="logo" src="../images/sqlite370_banner.gif" alt="SQLite" border="0"> +</a> +<div><!-- IE hack to prevent disappearing logo --></div> +<div class="tagline desktoponly"> +Small. Fast. 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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> + |