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    <p>The simple thing to do is read a little. The following list contains some stuff to look at and research.</p> <ol> <li>Spend time reading the <a href="http://www.opengroup.org/onlinepubs/9699919799/" rel="noreferrer">Open Group Base Specification</a> particularly the <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html" rel="noreferrer">General Information</a> section and the <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_09" rel="noreferrer">subsection on threads</a>. This is the basis information for multithreading under most UN*X-alike systems.</li> <li>Learn the <a href="http://koti.mbnet.fi/niclasw/MutexSemaphore.html" rel="noreferrer">difference between a mutex and a semaphore</a></li> <li>Realize that everything that is shared <em>MUST</em> be protected. This applies to global variables, <code>static</code> variables, and any shared dynamically allocated memory.</li> <li>Replace global state flags with <a href="http://en.wikipedia.org/wiki/Condition_variables" rel="noreferrer">condition variables</a>. These are implemented using <a href="http://www.opengroup.org/onlinepubs/9699919799/functions/pthread_cond_destroy.html" rel="noreferrer"><code>pthread_cond_init</code></a> and related functions.</li> </ol> <p>Once you understand the basics, learn about the common problems so that you can identify them <em>when</em> they occur:</p> <ul> <li><a href="http://www.justsoftwaresolutions.co.uk/threading/acquiring-multiple-locks-without-deadlock.html" rel="noreferrer">Lock inversion deadlocks</a></li> <li><a href="http://www.embedded.com/story/OEG20020321S0023" rel="noreferrer">Priority inversion</a> - if you are interested in a real life scenario, then <a href="http://research.microsoft.com/en-us/um/people/mbj/mars_pathfinder/mars_pathfinder.html" rel="noreferrer">read this snippet about the Mars Pathfinder</a></li> </ul>
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    1. COWow, i basically hadn't heard about anything that you listed here! Starting to read.
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    2. COThere is a lot of information out there. If you want more booklike things, give the notes at https://computing.llnl.gov/tutorials/pthreads/ a read or buy "UNIX Systems Programming" (http://www.amazon.com/UNIX-Systems-Programming-Communication-Concurrency/dp/0130424110/)
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