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628 lines
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
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<title>The Protothreads Library 1.4: Protothreads</title>
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<link href="doxygen.css" rel="stylesheet" type="text/css">
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<link href="tabs.css" rel="stylesheet" type="text/css">
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</head><body>
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<!-- Generated by Doxygen 1.4.6 -->
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<div class="tabs">
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<ul>
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<li><a href="main.html"><span>Main Page</span></a></li>
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<li><a href="modules.html"><span>Modules</span></a></li>
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<li><a href="annotated.html"><span>Data Structures</span></a></li>
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<li><a href="files.html"><span>Files</span></a></li>
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</ul></div>
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<h1>Protothreads</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
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Protothreads are implemented in a single header file, <a class="el" href="a00013.html">pt.h</a>, which includes the local continuations header file, <a class="el" href="a00011.html">lc.h</a>.
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<p>
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This file in turn includes the actual implementation of local continuations, which typically also is contained in a single header file.
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<p>
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<table border="0" cellpadding="0" cellspacing="0">
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<tr><td></td></tr>
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<tr><td colspan="2"><br><h2>Files</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">file </td><td class="memItemRight" valign="bottom"><a class="el" href="a00013.html">pt.h</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Protothreads implementation. <br></td></tr>
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<p>
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<tr><td colspan="2"><br><h2>Modules</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00016.html">Protothread semaphores</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">This module implements counting semaphores on top of protothreads. <br></td></tr>
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<p>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00017.html">Local continuations</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Local continuations form the basis for implementing protothreads. <br></td></tr>
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<p>
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<tr><td colspan="2"><br><h2>Data Structures</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="a00005.html">pt</a></td></tr>
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<tr><td colspan="2"><br><h2>Initialization</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#ge6bae7dc0225468c8a5ac269df549892">PT_INIT</a>(<a class="el" href="a00005.html">pt</a>)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Initialize a protothread. <a href="#ge6bae7dc0225468c8a5ac269df549892"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Declaration and definition</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g3d4c8bd4aada659eb34f5d2ffd3e7901">PT_THREAD</a>(name_args)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Declaration of a protothread. <a href="#g3d4c8bd4aada659eb34f5d2ffd3e7901"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g2ffbb9e554e08a343ae2f9de4bedfdfc">PT_BEGIN</a>(<a class="el" href="a00005.html">pt</a>)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Declare the start of a protothread inside the C function implementing the protothread. <a href="#g2ffbb9e554e08a343ae2f9de4bedfdfc"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g7b04a0035bef29d905496c23bae066d2">PT_END</a>(<a class="el" href="a00005.html">pt</a>)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Declare the end of a protothread. <a href="#g7b04a0035bef29d905496c23bae066d2"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Blocked wait</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g99e43010ec61327164466aa2d902de45">PT_WAIT_UNTIL</a>(<a class="el" href="a00005.html">pt</a>, condition)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Block and wait until condition is true. <a href="#g99e43010ec61327164466aa2d902de45"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#gad14bbbf092b90aa0a5a4f9169504a8d">PT_WAIT_WHILE</a>(<a class="el" href="a00005.html">pt</a>, cond)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Block and wait while condition is true. <a href="#gad14bbbf092b90aa0a5a4f9169504a8d"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Hierarchical protothreads</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g2f8f70c30b9ee08a103fbd69a4365c4c">PT_WAIT_THREAD</a>(<a class="el" href="a00005.html">pt</a>, thread)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Block and wait until a child protothread completes. <a href="#g2f8f70c30b9ee08a103fbd69a4365c4c"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g9e97a0b4d5cc7764d8e19758f5da53ae">PT_SPAWN</a>(<a class="el" href="a00005.html">pt</a>, child, thread)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Spawn a child protothread and wait until it exits. <a href="#g9e97a0b4d5cc7764d8e19758f5da53ae"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Exiting and restarting</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#gcd3ac045f0a4ae63412e3b3d8780e8ab">PT_RESTART</a>(<a class="el" href="a00005.html">pt</a>)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Restart the protothread. <a href="#gcd3ac045f0a4ae63412e3b3d8780e8ab"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g905451249dca72ce0385bf2a9ff178ee">PT_EXIT</a>(<a class="el" href="a00005.html">pt</a>)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Exit the protothread. <a href="#g905451249dca72ce0385bf2a9ff178ee"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Calling a protothread</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#gfa82b860a64b67d25ab3abc21811896f">PT_SCHEDULE</a>(f)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Schedule a protothread. <a href="#gfa82b860a64b67d25ab3abc21811896f"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Yielding from a protothread</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g155cba6121323726d02c00284428fed6">PT_YIELD</a>(<a class="el" href="a00005.html">pt</a>)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Yield from the current protothread. <a href="#g155cba6121323726d02c00284428fed6"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#ge3c821e3a388615528efda9d23c7d115">PT_YIELD_UNTIL</a>(<a class="el" href="a00005.html">pt</a>, cond)</td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">Yield from the protothread until a condition occurs. <a href="#ge3c821e3a388615528efda9d23c7d115"></a><br></td></tr>
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<tr><td colspan="2"><br><h2>Defines</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g7b5319b5b65761a845fcd1500fde4cdc"></a><!-- doxytag: member="pt::PT_WAITING" ref="g7b5319b5b65761a845fcd1500fde4cdc" args="" -->
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g7b5319b5b65761a845fcd1500fde4cdc">PT_WAITING</a> 0</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ge469332907e0617d72d5e2dd4297119d"></a><!-- doxytag: member="pt::PT_YIELDED" ref="ge469332907e0617d72d5e2dd4297119d" args="" -->
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#ge469332907e0617d72d5e2dd4297119d">PT_YIELDED</a> 1</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="gcfae9053e5c107a1aed6b228c917d2ea"></a><!-- doxytag: member="pt::PT_EXITED" ref="gcfae9053e5c107a1aed6b228c917d2ea" args="" -->
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#gcfae9053e5c107a1aed6b228c917d2ea">PT_EXITED</a> 2</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="g9ff1e8936a8a26bff54c05f8a989b93b"></a><!-- doxytag: member="pt::PT_ENDED" ref="g9ff1e8936a8a26bff54c05f8a989b93b" args="" -->
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#define </td><td class="memItemRight" valign="bottom"><a class="el" href="a00014.html#g9ff1e8936a8a26bff54c05f8a989b93b">PT_ENDED</a> 3</td></tr>
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</table>
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<hr><h2>Define Documentation</h2>
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<a class="anchor" name="g2ffbb9e554e08a343ae2f9de4bedfdfc"></a><!-- doxytag: member="pt.h::PT_BEGIN" ref="g2ffbb9e554e08a343ae2f9de4bedfdfc" args="(pt)" --><p>
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<table class="mdTable" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top">#define PT_BEGIN </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a> </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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<p>
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Declare the start of a protothread inside the C function implementing the protothread.
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<p>
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This macro is used to declare the starting point of a protothread. It should be placed at the start of the function in which the protothread runs. All C statements above the <a class="el" href="a00014.html#g2ffbb9e554e08a343ae2f9de4bedfdfc">PT_BEGIN()</a> invokation will be executed each time the protothread is scheduled.<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
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</dl>
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<p>
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Definition at line <a class="el" href="a00022.html#l00115">115</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
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<a class="anchor" name="g7b04a0035bef29d905496c23bae066d2"></a><!-- doxytag: member="pt.h::PT_END" ref="g7b04a0035bef29d905496c23bae066d2" args="(pt)" --><p>
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<td class="md" nowrap valign="top">#define PT_END </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a> </td>
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<td class="mdname1" valign="top" nowrap> </td>
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<td class="md" valign="top"> ) </td>
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Declare the end of a protothread.
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<p>
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This macro is used for declaring that a protothread ends. It must always be used together with a matching <a class="el" href="a00014.html#g2ffbb9e554e08a343ae2f9de4bedfdfc">PT_BEGIN()</a> macro.<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
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Definition at line <a class="el" href="a00022.html#l00127">127</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
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<a class="anchor" name="g905451249dca72ce0385bf2a9ff178ee"></a><!-- doxytag: member="pt.h::PT_EXIT" ref="g905451249dca72ce0385bf2a9ff178ee" args="(pt)" --><p>
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<td class="md" nowrap valign="top">#define PT_EXIT </td>
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<td class="md" valign="top">( </td>
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<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a> </td>
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<td class="md" valign="top"> ) </td>
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Exit the protothread.
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<p>
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This macro causes the protothread to exit. If the protothread was spawned by another protothread, the parent protothread will become unblocked and can continue to run.<p>
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<dl compact><dt><b>Parameters:</b></dt><dd>
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<table border="0" cellspacing="2" cellpadding="0">
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<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
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Definition at line <a class="el" href="a00022.html#l00246">246</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
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||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="ge6bae7dc0225468c8a5ac269df549892"></a><!-- doxytag: member="pt.h::PT_INIT" ref="ge6bae7dc0225468c8a5ac269df549892" args="(pt)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_INIT </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a> </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Initialize a protothread.
|
||
|
|
<p>
|
||
|
|
Initializes a protothread. Initialization must be done prior to starting to execute the protothread.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure.</td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="a00014.html#g9e97a0b4d5cc7764d8e19758f5da53ae">PT_SPAWN()</a> </dd></dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00080">80</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="gcd3ac045f0a4ae63412e3b3d8780e8ab"></a><!-- doxytag: member="pt.h::PT_RESTART" ref="gcd3ac045f0a4ae63412e3b3d8780e8ab" args="(pt)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_RESTART </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a> </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Restart the protothread.
|
||
|
|
<p>
|
||
|
|
This macro will block and cause the running protothread to restart its execution at the place of the <a class="el" href="a00014.html#g2ffbb9e554e08a343ae2f9de4bedfdfc">PT_BEGIN()</a> call.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00229">229</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="gfa82b860a64b67d25ab3abc21811896f"></a><!-- doxytag: member="pt.h::PT_SCHEDULE" ref="gfa82b860a64b67d25ab3abc21811896f" args="(f)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_SCHEDULE </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top">f </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Schedule a protothread.
|
||
|
|
<p>
|
||
|
|
This function shedules a protothread. The return value of the function is non-zero if the protothread is running or zero if the protothread has exited.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>f</em> </td><td>The call to the C function implementing the protothread to be scheduled </td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00271">271</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="g9e97a0b4d5cc7764d8e19758f5da53ae"></a><!-- doxytag: member="pt.h::PT_SPAWN" ref="g9e97a0b4d5cc7764d8e19758f5da53ae" args="(pt, child, thread)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_SPAWN </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a>, <tr>
|
||
|
|
<td class="md" nowrap align="right"></td>
|
||
|
|
<td class="md"></td>
|
||
|
|
<td class="md" nowrap>child, <tr>
|
||
|
|
<td class="md" nowrap align="right"></td>
|
||
|
|
<td class="md"></td>
|
||
|
|
<td class="md" nowrap>thread </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Spawn a child protothread and wait until it exits.
|
||
|
|
<p>
|
||
|
|
This macro spawns a child protothread and waits until it exits. The macro can only be used within a protothread.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>child</em> </td><td>A pointer to the child protothread's control structure. </td></tr>
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>thread</em> </td><td>The child protothread with arguments </td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00206">206</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="g3d4c8bd4aada659eb34f5d2ffd3e7901"></a><!-- doxytag: member="pt.h::PT_THREAD" ref="g3d4c8bd4aada659eb34f5d2ffd3e7901" args="(name_args)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_THREAD </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top">name_args </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Declaration of a protothread.
|
||
|
|
<p>
|
||
|
|
This macro is used to declare a protothread. All protothreads must be declared with this macro.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>name_args</em> </td><td>The name and arguments of the C function implementing the protothread. </td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00100">100</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="g2f8f70c30b9ee08a103fbd69a4365c4c"></a><!-- doxytag: member="pt.h::PT_WAIT_THREAD" ref="g2f8f70c30b9ee08a103fbd69a4365c4c" args="(pt, thread)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_WAIT_THREAD </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a>, <tr>
|
||
|
|
<td class="md" nowrap align="right"></td>
|
||
|
|
<td class="md"></td>
|
||
|
|
<td class="md" nowrap>thread </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Block and wait until a child protothread completes.
|
||
|
|
<p>
|
||
|
|
This macro schedules a child protothread. The current protothread will block until the child protothread completes.<p>
|
||
|
|
<dl compact><dt><b>Note:</b></dt><dd>The child protothread must be manually initialized with the <a class="el" href="a00014.html#ge6bae7dc0225468c8a5ac269df549892">PT_INIT()</a> function before this function is used.</dd></dl>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>thread</em> </td><td>The child protothread with arguments</td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
<dl compact><dt><b>See also:</b></dt><dd><a class="el" href="a00014.html#g9e97a0b4d5cc7764d8e19758f5da53ae">PT_SPAWN()</a> </dd></dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00192">192</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="g99e43010ec61327164466aa2d902de45"></a><!-- doxytag: member="pt.h::PT_WAIT_UNTIL" ref="g99e43010ec61327164466aa2d902de45" args="(pt, condition)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_WAIT_UNTIL </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a>, <tr>
|
||
|
|
<td class="md" nowrap align="right"></td>
|
||
|
|
<td class="md"></td>
|
||
|
|
<td class="md" nowrap>condition </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Block and wait until condition is true.
|
||
|
|
<p>
|
||
|
|
This macro blocks the protothread until the specified condition is true.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>condition</em> </td><td>The condition. </td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00148">148</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="gad14bbbf092b90aa0a5a4f9169504a8d"></a><!-- doxytag: member="pt.h::PT_WAIT_WHILE" ref="gad14bbbf092b90aa0a5a4f9169504a8d" args="(pt, cond)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_WAIT_WHILE </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a>, <tr>
|
||
|
|
<td class="md" nowrap align="right"></td>
|
||
|
|
<td class="md"></td>
|
||
|
|
<td class="md" nowrap>cond </td>
|
||
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<td class="mdname1" valign="top" nowrap> </td>
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||
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<td class="md" valign="top"> ) </td>
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||
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<td class="md" nowrap></td>
|
||
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</tr>
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||
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</table>
|
||
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</td>
|
||
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</tr>
|
||
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</table>
|
||
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|
<table cellspacing="5" cellpadding="0" border="0">
|
||
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<tr>
|
||
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<td>
|
||
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||
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</td>
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||
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<td>
|
||
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||
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<p>
|
||
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|
Block and wait while condition is true.
|
||
|
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<p>
|
||
|
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This function blocks and waits while condition is true. See <a class="el" href="a00014.html#g99e43010ec61327164466aa2d902de45">PT_WAIT_UNTIL()</a>.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>cond</em> </td><td>The condition. </td></tr>
|
||
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</table>
|
||
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</dl>
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||
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||
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<p>
|
||
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Definition at line <a class="el" href="a00022.html#l00167">167</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
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</tr>
|
||
|
|
</table>
|
||
|
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<a class="anchor" name="g155cba6121323726d02c00284428fed6"></a><!-- doxytag: member="pt.h::PT_YIELD" ref="g155cba6121323726d02c00284428fed6" args="(pt)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
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<tr>
|
||
|
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<td class="mdRow">
|
||
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<table cellpadding="0" cellspacing="0" border="0">
|
||
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<tr>
|
||
|
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<td class="md" nowrap valign="top">#define PT_YIELD </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a> </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Yield from the current protothread.
|
||
|
|
<p>
|
||
|
|
This function will yield the protothread, thereby allowing other processing to take place in the system.<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00290">290</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<a class="anchor" name="ge3c821e3a388615528efda9d23c7d115"></a><!-- doxytag: member="pt.h::PT_YIELD_UNTIL" ref="ge3c821e3a388615528efda9d23c7d115" args="(pt, cond)" --><p>
|
||
|
|
<table class="mdTable" cellpadding="2" cellspacing="0">
|
||
|
|
<tr>
|
||
|
|
<td class="mdRow">
|
||
|
|
<table cellpadding="0" cellspacing="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td class="md" nowrap valign="top">#define PT_YIELD_UNTIL </td>
|
||
|
|
<td class="md" valign="top">( </td>
|
||
|
|
<td class="md" nowrap valign="top"><a class="el" href="a00005.html">pt</a>, <tr>
|
||
|
|
<td class="md" nowrap align="right"></td>
|
||
|
|
<td class="md"></td>
|
||
|
|
<td class="md" nowrap>cond </td>
|
||
|
|
<td class="mdname1" valign="top" nowrap> </td>
|
||
|
|
<td class="md" valign="top"> ) </td>
|
||
|
|
<td class="md" nowrap></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
</td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<table cellspacing="5" cellpadding="0" border="0">
|
||
|
|
<tr>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
</td>
|
||
|
|
<td>
|
||
|
|
|
||
|
|
<p>
|
||
|
|
Yield from the protothread until a condition occurs.
|
||
|
|
<p>
|
||
|
|
<dl compact><dt><b>Parameters:</b></dt><dd>
|
||
|
|
<table border="0" cellspacing="2" cellpadding="0">
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>pt</em> </td><td>A pointer to the protothread control structure. </td></tr>
|
||
|
|
<tr><td valign="top"></td><td valign="top"><em>cond</em> </td><td>The condition.</td></tr>
|
||
|
|
</table>
|
||
|
|
</dl>
|
||
|
|
This function will yield the protothread, until the specified condition evaluates to true.
|
||
|
|
<p>
|
||
|
|
Definition at line <a class="el" href="a00022.html#l00310">310</a> of file <a class="el" href="a00022.html">pt.h</a>. </td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<hr size="1"><address style="align: right;"><small>Generated on Mon Oct 2 10:06:29 2006 for The Protothreads Library 1.4 by
|
||
|
|
<a href="http://www.doxygen.org/index.html">
|
||
|
|
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
|
||
|
|
</body>
|
||
|
|
</html>
|