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| <title>clLinkProgram</title> |
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| <meta name="keywords" content="clLinkProgram" /> |
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| <body> |
| <div class="refentry"> |
| <a id="id-1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <a xmlns="http://www.w3.org/1999/xhtml" id="clLinkProgram"></a> |
| <h1> |
| clLinkProgram |
| </h1> |
| <p> |
| Links a set of compiled program objects and libraries for all the devices or a specific device(s) in |
| the OpenCL context and creates a library or executable. |
| </p> |
| </div> |
| <div class="refsynopsisdiv"> |
| <h2></h2> |
| <div class="funcsynopsis"> |
| <table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"> |
| <tr valign="bottom"> |
| <td> |
| <code xmlns="http://www.w3.org/1999/xhtml" class="funcdef"> |
| <a class="link" href="scalarDataTypes.html" target="pagedisplay">cl_program</a> |
| <strong class="fsfunc">clLinkProgram</strong> |
| (</code> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_context</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">context</var>, </td> |
| </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">cl_uint</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_devices</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_device_id</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*device_list</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">char</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*options</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">cl_uint</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">num_input_programs</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td>const <a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="pagedisplay">cl_program</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*input_programs</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">void</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">(CL_CALLBACK *pfn_notify) |
| (<a class="link" href="abstractDataTypes.html" target="pagedisplay">cl_program</a> program, <a class="link" href="scalarDataTypes.html" target="_top">void</a> *user_data)</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">void</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*user_data</var>, </td> |
| </tr> |
| <tr valign="top"> |
| <td> </td> |
| <td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="pagedisplay">cl_int</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*errcode_ret</var><code>)</code></td> |
| </tr> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="parameters"></a> |
| <h2>Parameters</h2> |
| <div class="variablelist"> |
| <dl class="variablelist"> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| context |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Must be a valid OpenCL context. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| device_list |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A pointer to a list of devices that are in <code class="varname">context</code>. |
| If <code class="varname">device_list</code> is a NULL value, the link is performed |
| for all devices associated with <code class="varname">context</code> for which a |
| compiled object is available. If <code class="varname">device_list</code> is a |
| non-NULL value, the compile is performed for devices specified in this |
| list for which a compiled object is available. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| num_devices |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| The number of devices listed in <code class="varname">device_list</code>. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| options |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A pointer to a null-terminated string of characters that describes |
| the link options to be used for building the program executable. See |
| <a class="citerefentry" href="clBuildProgram.html"><span class="citerefentry"><span class="refentrytitle">clBuildProgram</span></span></a> |
| for a list of supported compiler and linker options. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| num_input_programs |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Specifies the number of programs in array referenced by <code class="varname">input_programs</code>. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| input_programs |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| An array of program objects that are compiled binaries or libraries |
| that are to be linked to create the program executable. For each device |
| in <code class="varname">device_list</code> or if <code class="varname">device_list</code> |
| is NULL the list of devices associated with <code class="varname">context</code>, |
| the following cases occur: |
| </p> |
| <div class="itemizedlist"> |
| <ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem" style="list-style-type: disc"> |
| <p> |
| All programs specified by <code class="varname">input_programs</code> |
| contain a compiled binary or library for the device. In this case, |
| a link is performed to generate a program executable for this device. |
| </p> |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| <p> |
| None of the programs contain a compiled binary or library for |
| that device. In this case, no link is performed and there will |
| be no program executable generated for this device. |
| </p> |
| </li> |
| <li class="listitem" style="list-style-type: disc"> |
| <p> |
| All other cases will return a |
| <code class="constant">CL_INVALID_OPERATION</code> error. |
| </p> |
| </li> |
| </ul> |
| </div> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| pfn_notify |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| A function pointer to a notification routine. The notification routine is a |
| callback function that an application can register and which will be called |
| when the program executable has been built (successfully or unsuccessfully). |
| </p> |
| <p> |
| If <code class="varname">pfn_notify</code> is not NULL, |
| <code class="function">clLinkProgram</code> does not need to wait for the linker |
| to complete and can return immediately once the linking operation can |
| begin. Once the linker has completed, the <code class="varname">pfn_notify</code> |
| callback function is called which returns the program object returned |
| by <code class="function">clLinkProgram</code>. The application can query the link |
| status and log for this program object. This callback function may be called |
| asynchronously by the OpenCL implementation. It is the application’s |
| responsibility to ensure that the callback function is thread-safe. |
| </p> |
| <p> |
| If <code class="varname">pfn_notify</code> is NULL, <code class="function">clLinkProgram</code> |
| does not return until the linker has completed. |
| </p> |
| </dd> |
| <dt> |
| <span class="term"> |
| <code class="varname"> |
| user_data |
| </code> |
| </span> |
| </dt> |
| <dd> |
| <p> |
| Will be passed as an argument when <code class="varname">pfn_notify</code> is called. |
| <code class="varname">user_data</code> can be NULL. |
| </p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="notes"></a> |
| <h2>Notes</h2> |
| <p> |
| <code class="function">clLinkProgram</code> creates a new program object which |
| contains the library or executable. |
| <a class="citerefentry" href="clLinkProgram.html"><span class="citerefentry"><span class="refentrytitle">clLinkProgram</span></span></a> |
| creates a new program object which contains the library or executable. |
| The library or executable binary can be queried using |
| <a class="citerefentry" href="clGetProgramInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetProgramInfo</span></span></a>(<code class="varname">program</code>, |
| <code class="constant">CL_PROGRAM_BINARIES</code>, ...) and can be specified to |
| <a class="citerefentry" href="clCreateProgramWithBinary.html"><span class="citerefentry"><span class="refentrytitle">clCreateProgramWithBinary</span></span></a> |
| to create a new program object. |
| </p> |
| <p> |
| The devices associated with the returned program object will be the list of devices |
| specified by <code class="varname">device_list</code> or if <code class="varname">device_list</code> |
| is NULL it will be the list of devices associated with <code class="varname">context</code>. |
| </p> |
| <p> |
| The linking operation can begin if the context, list of devices, input programs and |
| linker options specified are all valid and appropriate host and device resources |
| needed to perform the link are available. If the linking operation can begin, |
| <code class="function">clLinkProgram</code> returns a valid non-zero program object. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="errors"></a> |
| <h2>Errors</h2> |
| <p> |
| If <code class="varname">pfn_notify</code> is NULL, the <code class="varname">errcode_ret</code> will |
| be set to <code class="constant">CL_SUCCESS</code> if the link operation was successful and |
| <code class="constant">CL_LINK_FAILURE</code> if there is a failure to link the compiled |
| binaries and/or libraries. |
| </p> |
| <p> |
| If <code class="varname">pfn_notify</code> is not NULL, <code class="function">clLinkProgram</code> |
| does not have to wait until the linker to complete and can return |
| <code class="constant">CL_SUCCESS</code> in <code class="varname">errcode_ret</code> if the linking |
| operation can begin. The <code class="varname">pfn_notify</code> callback function will |
| return a <code class="constant">CL_SUCCESS</code> or <code class="constant">CL_LINK_FAILURE</code> |
| if the linking operation was successful or not. |
| </p> |
| <p> |
| Otherwise <code class="function">clLinkProgram</code> returns a NULL program object with an |
| appropriate error in <code class="varname">errcode_ret</code>. The application should query |
| the linker status of this program object to check if the link was successful or not. |
| The list of errors that can be returned are: |
| </p> |
| <div class="itemizedlist"> |
| <ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_CONTEXT</span> if <code class="varname">context</code> is not a valid context. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">device_list</code> |
| is NULL and <code class="varname">num_devices</code> is greater than zero, or if |
| <code class="varname">device_list</code> is not NULL and <code class="varname">num_devices</code> |
| is zero. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">num_input_programs</code> |
| is zero and <code class="varname">input_programs</code> is NULL or if |
| <code class="varname">num_input_programs</code> is zero and <code class="varname">input_programs</code> |
| is not NULL or if <code class="varname">num_input_programs</code> is not zero and |
| <code class="varname">input_programs</code> is NULL. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_PROGRAM</span> if programs specified in |
| <code class="varname">input_programs</code> are not valid program objects. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">pfn_notify</code> is |
| NULL but <code class="varname">user_data</code> is not NULL. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_DEVICE</span> if OpenCL devices listed in |
| <code class="varname">device_list</code> are not in the list of devices associated with |
| <code class="varname">context</code>. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_LINKER_OPTIONS</span> if the linker options specified by |
| <code class="varname">options</code> are invalid |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_OPERATION</span> if the compilation |
| or build of a program executable for any of the devices |
| listed in <code class="varname">device_list</code> by a previous call to |
| <a class="citerefentry" href="clCompileProgram.html"><span class="citerefentry"><span class="refentrytitle">clCompileProgram</span></span></a> |
| or <a class="citerefentry" href="clBuildProgram.html"><span class="citerefentry"><span class="refentrytitle">clBuildProgram</span></span></a> |
| for <code class="varname">program</code> has not completed. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_OPERATION</span> if the rules for devices containing |
| compiled binaries or libraries as described in <code class="varname">input_programs</code> |
| argument above are not followed. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_INVALID_OPERATION</span> if the one or more of the programs specified in |
| <code class="varname">input_programs</code> requires independent forward progress of |
| sub-groups but one or more of |
| the devices listed in |
| <code class="varname">device_list</code> does not return |
| <code class="constant">CL_TRUE</code> for the |
| <code class="constant">CL_DEVICE_SUBGROUP_INDEPENDENT_FORWARD_PROGRESS</code> query. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_LINKER_NOT_AVAILABLE</span> if a linker is not |
| available i.e. <code class="constant">CL_DEVICE_LINKER_AVAILABLE</code> specified |
| in the table of allowed values for <code class="varname">param_name</code> for |
| <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a> |
| is set to <code class="constant">CL_FALSE</code>. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_LINK_PROGRAM_FAILURE</span> if there is a failure to link the |
| compiled binaries and/or libraries. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_RESOURCES</span> if there is a failure to allocate |
| resources required by the OpenCL implementation on the device. |
| </li> |
| <li class="listitem" style="list-style-type: disc"><span class="errorname">CL_OUT_OF_HOST_MEMORY</span> if there is a failure to allocate |
| resources required by the OpenCL implementation on the host. |
| </li> |
| </ul> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="specification"></a> |
| <h2>Specification</h2> |
| <p> |
| <img src="pdficon_small1.gif" /> |
| |
| <a href="https://www.khronos.org/registry/cl/specs/opencl-2.1.pdf#page=205" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="clGetDeviceInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetDeviceInfo</span></span></a> |
| </p> |
| </div> |
| <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2015 The Khronos Group Inc. |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and/or associated documentation files (the |
| "Materials"), to deal in the Materials without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
| permit persons to whom the Materials are furnished to do so, subject to |
| the condition that this copyright notice and permission notice shall be included |
| in all copies or substantial portions of the Materials. |
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