55 lines
3.6 KiB
HTML
55 lines
3.6 KiB
HTML
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<meta name="DC.Title" content="Calling functions that are not threadsafe" />
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<meta name="abstract" content="The most common programming error when writing a threaded application is the use of APIs or system services that are not thread safe." />
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<title>Calling functions that are not threadsafe</title>
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<body id="rzahwnsf-nsfco"><a name="rzahwnsf-nsfco"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Calling functions that are not threadsafe</h1>
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<div><p>The most common programming error when writing a threaded application
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is the use of APIs or system services that are not thread safe.</p>
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<div class="section"><p>An application needs to be aware of each API that it calls and
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whether the provider classifies it as thread safe. If the API or system-provided
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service is thread safe, it must use only other threadsafe APIs or system services
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in its implementation.</p>
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</div>
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<div class="section"><p>This is especially problematic when your application calls user-written
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code that is outside of your control. You cannot validate this code for thread
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safety. If the user code is not threadsafe and you call it within your application's
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own process context, you might damage the application data, or
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the application might halt.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzahwcomco.htm" title="Several programming errors often occur when writing multithreaded applications.">Common multithreaded programming errors</a></div>
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</div>
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<div class="relref"><strong>Related reference</strong><br />
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<div><a href="rzahwceeco.htm" title="You must evaluate existing C applications for thread safety before calling them in a multithreaded job. If your C program is not threadsafe, techniques are available for calling programs that are not threadsafe from multithreaded jobs.">Threads considerations for C language</a></div>
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</div>
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</div>
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</body>
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</html>
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