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<!-- ================================ SYNOPSIS -->
<refnamediv id="clEnqueueBarrierWithWaitList">
A synchronization point that enqueues a barrier operation.
<refsynopsisdiv xmlns:xlink=""><title></title>
<link xlink:href="scalarDataTypes.html">cl_int</link>
<link xlink:href="abstractDataTypes.html">cl_command_queue</link>
<link xlink:href="abstractDataTypes.html">cl_uint</link>
<link xlink:href="abstractDataTypes.html">cl_event</link>
<link xlink:href="abstractDataTypes.html">cl_event</link>
<!-- ================================ PARAMETERS -->
<!-- -->
<refsect1 id="parameters">
<term> <varname> command_queue </varname> </term>
A valid command queue.
Specify events that need to complete before this particular command can be executed.
If <varname>event_wait_list</varname> is NULL,
<varname>num_events_in_wait_list</varname> must be 0. If
<varname>event_wait_list</varname> is not NULL, the list of events
pointed to by <varname>event_wait_list</varname> must be valid
and <varname>num_events_in_wait_list</varname> must be greater
than 0. The events specified in <varname>event_wait_list</varname>
act as synchronization points. The context associated with events in
<varname>event_wait_list</varname> and <varname>command_queue</varname> must
be the same. The memory associated with <varname>event_wait_list</varname>
can be reused or freed after the function returns.
If <varname>event_wait_list</varname> is NULL, then this particular command
waits until all previous enqueued commands to command_queue have completed.
<term> <varname> event </varname> </term>
Returns an event object that identifies this particular command. Event
objects are unique and can be used to identify this barrier command
later on. <varname>event</varname> can be NULL in which case it
will not be possible for the application to query the status of
this command or queue a wait for this command to complete. If the
<varname>event_wait_list</varname> and the <varname>event</varname>
arguments are not NULL, the <varname>event</varname> argument should not
refer to an element of the <varname>event_wait_list</varname> array.
<!-- ================================ NOTES -->
<refsect1 id="notes"><title>Notes</title>
Enqueues a barrier command which waits for either a list of events to complete,
or if the list is empty it waits for all commands previously enqueued in
<varname>command_queue</varname> to complete before it completes. This command blocks
command execution, that is, any following commands enqueued after it do not execute
until it completes. This command returns an <varname>event</varname> which can be
waited on, i.e. this event can be waited on to insure that all events either in the
<varname>event_wait_list</varname> or all previously enqueued commands, queued before
this command to <varname>command_queue</varname>, have completed.
<!-- ================================ ERRORS -->
<refsect1 id="errors"><title>Errors</title>
Returns <errorname>CL_SUCCESS</errorname> if the function was successfully executed.
Otherwise, it returns one of the following errors:
<itemizedlist mark="disc">
<errorname>CL_INVALID_COMMAND_QUEUE</errorname> if <varname>command_queue</varname>
is not a valid command-queue.
if <varname>event_wait_list</varname> is NULL and
<varname>num_events_in_wait_list</varname> &gt; 0,
or <varname>event_wait_list</varname> is not NULL and
<varname>num_events_in_wait_list</varname> is 0, or if event objects in
<varname>event_wait_list</varname> are not valid events.
<errorname>CL_OUT_OF_RESOURCES</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the device.
<errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate
resources required by the OpenCL implementation on the host.
<!-- ================================ EXAMPLE -->
<refsect2 id="example1">
<informaltable frame="none">
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Example goes here - it will be set in "code" type with white space preserved.
<!-- ================================ SPECIFICATION -->
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<refsect1 id="specification"><title>Specification</title>
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<olink uri="clEnqueueBarrierWithWaitList">OpenCL Specification</olink>
<!-- ================================ ALSO SEE -->
<refsect1 id="seealso"><title>Also see</title>
<!-- ================================ COPYRIGHT -->
<!-- Content included from -->
<refsect3 id="Copyright"><title></title>
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<para />
<!-- 21-Oct-2011 -->