Adding upstream version 3.45.1.upstream/3.45.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-13 14:07:11 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-13 14:07:11 +0000
commit: 63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree: 01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/threadsafe.html
parent: Initial commit. (diff)
download: sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz
sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip
1 files changed, 163 insertions, 0 deletions
diff --git a/www/c3ref/threadsafe.html b/www/c3ref/threadsafe.html
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+<!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>Test To See If The Library Is Threadsafe</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. Reliable.<br>Choose any three.
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+</ul>
+</div>
+<div class="menu submenu" id="submenu">
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+<li><a href='../download.html'>Download</a>
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+<div class="searchmenu" id="searchmenu">
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+<script>
+function toggle_div(nm) {
+var w = document.getElementById(nm);
+if( w.style.display=="block" ){
+w.style.display = "none";
+}else{
+w.style.display = "block";
+}
+}
+function toggle_search() {
+var w = document.getElementById("searchmenu");
+if( w.style.display=="block" ){
+w.style.display = "none";
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+w.style.display = "block";
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+document.getElementById("searchbox").focus()
+}, 30);
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+function div_off(nm){document.getElementById(nm).style.display="none";}
+window.onbeforeunload = function(e){div_off("submenu");}
+/* Disable the Search feature if we are not operating from CGI, since */
+/* Search is accomplished using CGI and will not work without it. */
+if( !location.origin || !location.origin.match || !location.origin.match(/http/) ){
+document.getElementById("search_menubutton").style.display = "none";
+}
+/* Used by the Hide/Show button beside syntax diagrams, to toggle the */
+function hideorshow(btn,obj){
+var x = document.getElementById(obj);
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+if( x.style.display!='none' ){
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+</script>
+<!-- keywords: sqlite3_threadsafe -->
+<div class=nosearch>
+<a href="../c3ref/intro.html"><h2>SQLite C Interface</h2></a>
+<h2>Test To See If The Library Is Threadsafe</h2>
+</div>
+<blockquote><pre>
+int sqlite3_threadsafe(void);
+</pre></blockquote>
+<p>
+The sqlite3_threadsafe() function returns zero if and only if
+SQLite was compiled with mutexing code omitted due to the
+<a href="../compile.html#threadsafe">SQLITE_THREADSAFE</a> compile-time option being set to 0.</p>
+
+<p>SQLite can be compiled with or without mutexes.  When
+the <a href="../compile.html#threadsafe">SQLITE_THREADSAFE</a> C preprocessor macro is 1 or 2, mutexes
+are enabled and SQLite is threadsafe.  When the
+<a href="../compile.html#threadsafe">SQLITE_THREADSAFE</a> macro is 0,
+the mutexes are omitted.  Without the mutexes, it is not safe
+to use SQLite concurrently from more than one thread.</p>
+
+<p>Enabling mutexes incurs a measurable performance penalty.
+So if speed is of utmost importance, it makes sense to disable
+the mutexes.  But for maximum safety, mutexes should be enabled.
+The default behavior is for mutexes to be enabled.</p>
+
+<p>This interface can be used by an application to make sure that the
+version of SQLite that it is linking against was compiled with
+the desired setting of the <a href="../compile.html#threadsafe">SQLITE_THREADSAFE</a> macro.</p>
+
+<p>This interface only reports on the compile-time mutex setting
+of the <a href="../compile.html#threadsafe">SQLITE_THREADSAFE</a> flag.  If SQLite is compiled with
+SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but
+can be fully or partially disabled using a call to <a href="../c3ref/config.html">sqlite3_config()</a>
+with the verbs <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigsinglethread">SQLITE_CONFIG_SINGLETHREAD</a>, <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigmultithread">SQLITE_CONFIG_MULTITHREAD</a>,
+or <a href="../c3ref/c_config_covering_index_scan.html#sqliteconfigserialized">SQLITE_CONFIG_SERIALIZED</a>.  The return value of the
+sqlite3_threadsafe() function shows only the compile-time setting of
+thread safety, not any run-time changes to that setting made by
+sqlite3_config(). In other words, the return value from sqlite3_threadsafe()
+is unchanged by calls to sqlite3_config().</p>
+
+<p>See the <a href="../threadsafe.html">threading mode</a> documentation for additional information.
+</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>
+
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-13 14:07:11 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-13 14:07:11 +0000
commit	63847496f14c813a5d80efd5b7de0f1294ffe1e3 (patch)
tree	01c7571c7c762ceee70638549a99834fdd7c411b /www/c3ref/threadsafe.html
parent	Initial commit. (diff)
download	sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.tar.xz sqlite3-63847496f14c813a5d80efd5b7de0f1294ffe1e3.zip