mirror of
https://github.com/boostorg/thread.git
synced 2026-01-23 18:12:12 +00:00
88 lines
1.9 KiB
HTML
88 lines
1.9 KiB
HTML
<html>
|
|
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
|
<meta name="keywords" content="threads, BTL, thread library, C++">
|
|
<title>Boost.Threads, lock_error</title>
|
|
</head>
|
|
|
|
<body bgcolor="#FFFFFF" link="#0000FF" vlink="#800080">
|
|
|
|
<table border="0" cellpadding="7" cellspacing="0" width="100%">
|
|
<tr>
|
|
<td valign="top" width="300">
|
|
<h3><img src="../../../c++boost.gif" alt="C++ Boost" width="277" height="86"></h3>
|
|
</td>
|
|
<td valign="top">
|
|
<h1 align="center">Boost.Threads</h1>
|
|
<h2 align="center">lock_error</h2>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<hr>
|
|
|
|
<p>The <tt>lock_error</tt> class defines an exception type that is thrown by lock operations that
|
|
would deadlock or unlock operations performed by a thread that does not own the lock.</p>
|
|
|
|
<h2>Header</h2>
|
|
|
|
<pre>
|
|
#include <a href="../../../boost/thread/thread.hpp"><boost/thread/thread.hpp></a>
|
|
</pre>
|
|
|
|
<h2>Public Interface</h2>
|
|
|
|
<pre>
|
|
class lock_error : public std::runtime_error
|
|
{
|
|
public:
|
|
lock_error();
|
|
};
|
|
</pre>
|
|
|
|
<h3>Constructor</h3>
|
|
|
|
<pre>
|
|
lock_error();
|
|
</pre>
|
|
|
|
<p>Constructs a <tt>lock_error</tt>.</p>
|
|
|
|
<h2>Example Usage</h2>
|
|
|
|
<pre>
|
|
#include <a href="../../../boost/thread/mutex.hpp"><boost/thread/mutex.hpp></a>
|
|
#include <a href="../../../boost/thread/thread.hpp"><boost/thread/thread.hpp></a>
|
|
#include <iostream>
|
|
|
|
int main(int, char*[])
|
|
{
|
|
boost::mutex mutex;
|
|
boost::mutex::lock lock(mutex);
|
|
try
|
|
{
|
|
boost::mutex::lock deadlock(mutex);
|
|
std::cout << "lock succeeded" << std::endl;
|
|
}
|
|
catch (boost::lock_error& err)
|
|
{
|
|
std::cout << err.what() << " - deadlock occurred." << std::endl;
|
|
}
|
|
}
|
|
</pre>
|
|
|
|
<p>The output is:</p>
|
|
|
|
<pre>
|
|
thread lock error - deadlock occurred.
|
|
</pre>
|
|
|
|
<hr>
|
|
|
|
<p><i>Copyright <a href="mailto:williamkempf@hotmail.com">William E. Kempf</a>
|
|
2001 all rights reserved.</i></p>
|
|
|
|
</body>
|
|
</html>
|