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diff --git a/www/c3ref/trace_v2.html b/www/c3ref/trace_v2.html new file mode 100644 index 0000000..4a2fd3a --- /dev/null +++ b/www/c3ref/trace_v2.html @@ -0,0 +1,160 @@ +<!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>SQL Trace Hook</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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If the X callback is +NULL or if the M mask is zero, then tracing is disabled. The +M argument should be the bitwise OR-ed combination of +zero or more <a href="../c3ref/c_trace.html">SQLITE_TRACE</a> constants.</p> + +<p>Each call to either sqlite3_trace() or sqlite3_trace_v2() overrides +(cancels) any prior calls to sqlite3_trace() or sqlite3_trace_v2().</p> + +<p>The X callback is invoked whenever any of the events identified by +mask M occur. The integer return value from the callback is currently +ignored, though this may change in future releases. Callback +implementations should return zero to ensure future compatibility.</p> + +<p>A trace callback is invoked with four arguments: callback(T,C,P,X). +The T argument is one of the <a href="../c3ref/c_trace.html">SQLITE_TRACE</a> +constants to indicate why the callback was invoked. +The C argument is a copy of the context pointer. +The P and X arguments are pointers whose meanings depend on T.</p> + +<p>The sqlite3_trace_v2() interface is intended to replace the legacy +interfaces <a href="../c3ref/profile.html">sqlite3_trace()</a> and <a href="../c3ref/profile.html">sqlite3_profile()</a>, both of which +are deprecated. +</p><p>See also lists of + <a href="objlist.html">Objects</a>, + <a href="constlist.html">Constants</a>, and + <a href="funclist.html">Functions</a>.</p> + |