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  <compounddef id="classgr_1_1host__buffer" kind="class" language="C++" prot="public">
    <compoundname>gr::host_buffer</compoundname>
    <basecompoundref refid="classgr_1_1buffer__single__mapped" prot="public" virt="non-virtual">gr::buffer_single_mapped</basecompoundref>
    <includes refid="host__buffer_8h" local="no">gnuradio/host_buffer.h</includes>
    <sectiondef kind="public-static-attrib">
      <memberdef kind="variable" id="classgr_1_1host__buffer_1a7e38063225722c492eebd3e7bed7046e" prot="public" static="yes" mutable="no">
        <type><ref refid="namespacegr_1a14226de3800846e1cf3b8a8f3eb5997f" kindref="member">buffer_type</ref></type>
        <definition>buffer_type gr::host_buffer::type</definition>
        <argsstring></argsstring>
        <name>type</name>
        <qualifiedname>gr::host_buffer::type</qualifiedname>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="24" column="24" bodyfile="gnuradio-runtime/include/gnuradio/host_buffer.h" bodystart="24" bodyend="-1"/>
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    <sectiondef kind="private-attrib">
      <memberdef kind="variable" id="classgr_1_1host__buffer_1a67c11e548d550c930c29e5af4f8a1741" prot="private" static="no" mutable="no">
        <type>std::unique_ptr&lt; char[]&gt;</type>
        <definition>std::unique_ptr&lt;char[]&gt; gr::host_buffer::d_device_buf</definition>
        <argsstring></argsstring>
        <name>d_device_buf</name>
        <qualifiedname>gr::host_buffer::d_device_buf</qualifiedname>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="98" column="21" bodyfile="gnuradio-runtime/include/gnuradio/host_buffer.h" bodystart="98" bodyend="-1"/>
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        <type>char *</type>
        <definition>char* gr::host_buffer::d_device_base</definition>
        <argsstring></argsstring>
        <name>d_device_base</name>
        <qualifiedname>gr::host_buffer::d_device_base</qualifiedname>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="99" column="10" bodyfile="gnuradio-runtime/include/gnuradio/host_buffer.h" bodystart="99" bodyend="-1"/>
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    <sectiondef kind="public-static-func">
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        <type>void *</type>
        <definition>static void * gr::host_buffer::device_memcpy</definition>
        <argsstring>(void *dest, const void *src, std::size_t count)</argsstring>
        <name>device_memcpy</name>
        <qualifiedname>gr::host_buffer::device_memcpy</qualifiedname>
        <param>
          <type>void *</type>
          <declname>dest</declname>
        </param>
        <param>
          <type>const void *</type>
          <declname>src</declname>
        </param>
        <param>
          <type>std::size_t</type>
          <declname>count</declname>
        </param>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="21" column="17"/>
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        <type>void *</type>
        <definition>static void * gr::host_buffer::device_memmove</definition>
        <argsstring>(void *dest, const void *src, std::size_t count)</argsstring>
        <name>device_memmove</name>
        <qualifiedname>gr::host_buffer::device_memmove</qualifiedname>
        <param>
          <type>void *</type>
          <declname>dest</declname>
        </param>
        <param>
          <type>const void *</type>
          <declname>src</declname>
        </param>
        <param>
          <type>std::size_t</type>
          <declname>count</declname>
        </param>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="22" column="17"/>
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        <type>buffer_sptr</type>
        <definition>static buffer_sptr gr::host_buffer::make_buffer</definition>
        <argsstring>(int nitems, size_t sizeof_item, uint64_t downstream_lcm_nitems, uint32_t downstream_max_out_mult, block_sptr link=block_sptr(), block_sptr buf_owner=block_sptr())</argsstring>
        <name>make_buffer</name>
        <qualifiedname>gr::host_buffer::make_buffer</qualifiedname>
        <param>
          <type>int</type>
          <declname>nitems</declname>
        </param>
        <param>
          <type>size_t</type>
          <declname>sizeof_item</declname>
        </param>
        <param>
          <type>uint64_t</type>
          <declname>downstream_lcm_nitems</declname>
        </param>
        <param>
          <type>uint32_t</type>
          <declname>downstream_max_out_mult</declname>
        </param>
        <param>
          <type>block_sptr</type>
          <declname>link</declname>
          <defval>block_sptr()</defval>
        </param>
        <param>
          <type>block_sptr</type>
          <declname>buf_owner</declname>
          <defval>block_sptr()</defval>
        </param>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="26" column="24"/>
        <references refid="classgr_1_1buffer__single__mapped_1ae514fe9623fbaa4eba3a5d0ed1d5aead" compoundref="buffer__single__mapped_8h" startline="40" endline="40">gr::buffer_single_mapped::buf_owner</references>
        <references refid="classgr_1_1buffer_1aa749e1b47a6ed898cbf6b7a2fe8e04f6" compoundref="buffer_8h" startline="120" endline="120">gr::buffer::link</references>
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        <type>buffer_sptr</type>
        <definition>static buffer_sptr gr::host_buffer::make_host_buffer</definition>
        <argsstring>(int nitems, std::size_t sizeof_item, uint64_t downstream_lcm_nitems, uint32_t downstream_max_out_mult, block_sptr link, block_sptr buf_owner)</argsstring>
        <name>make_host_buffer</name>
        <qualifiedname>gr::host_buffer::make_host_buffer</qualifiedname>
        <param>
          <type>int</type>
          <declname>nitems</declname>
        </param>
        <param>
          <type>std::size_t</type>
          <declname>sizeof_item</declname>
        </param>
        <param>
          <type>uint64_t</type>
          <declname>downstream_lcm_nitems</declname>
        </param>
        <param>
          <type>uint32_t</type>
          <declname>downstream_max_out_mult</declname>
        </param>
        <param>
          <type>block_sptr</type>
          <declname>link</declname>
        </param>
        <param>
          <type>block_sptr</type>
          <declname>buf_owner</declname>
        </param>
        <briefdescription>
<para>Creates a new <ref refid="classgr_1_1host__buffer" kindref="compound">host_buffer</ref> object. </para>
        </briefdescription>
        <detaileddescription>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>nitems</parametername>
</parameternamelist>
<parameterdescription>
<para></para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>sizeof_item</parametername>
</parameternamelist>
<parameterdescription>
<para></para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>downstream_lcm_nitems</parametername>
</parameternamelist>
<parameterdescription>
<para></para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>downstream_max_out_mult</parametername>
</parameternamelist>
<parameterdescription>
<para></para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>link</parametername>
</parameternamelist>
<parameterdescription>
<para></para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>buf_owner</parametername>
</parameternamelist>
<parameterdescription>
</parameterdescription>
</parameteritem>
</parameterlist>
<simplesect kind="return"><para>pointer to buffer base class </para>
</simplesect>
</para>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="89" column="24"/>
        <references refid="classgr_1_1buffer__single__mapped_1ae514fe9623fbaa4eba3a5d0ed1d5aead" compoundref="buffer__single__mapped_8h" startline="40" endline="40">gr::buffer_single_mapped::buf_owner</references>
        <references refid="classgr_1_1buffer_1aa749e1b47a6ed898cbf6b7a2fe8e04f6" compoundref="buffer_8h" startline="120" endline="120">gr::buffer::link</references>
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    <sectiondef kind="public-func">
      <memberdef kind="function" id="classgr_1_1host__buffer_1a28474b3842d8a18a755a1a755bea14fa" prot="public" static="no" const="no" explicit="no" inline="no" virt="non-virtual">
        <type></type>
        <definition>gr::host_buffer::~host_buffer</definition>
        <argsstring>() override</argsstring>
        <name>~host_buffer</name>
        <qualifiedname>gr::host_buffer::~host_buffer</qualifiedname>
        <briefdescription>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="33" column="5"/>
      </memberdef>
      <memberdef kind="function" id="classgr_1_1host__buffer_1a2fc5781b3554eb1b1a44075ee886bd65" prot="public" static="no" const="no" explicit="no" inline="no" virt="virtual">
        <type>void</type>
        <definition>void gr::host_buffer::post_work</definition>
        <argsstring>(int nitems) override</argsstring>
        <name>post_work</name>
        <qualifiedname>gr::host_buffer::post_work</qualifiedname>
        <reimplements refid="classgr_1_1buffer_1a5ac7fb51b1e936dfc2690744c090eb8e">post_work</reimplements>
        <param>
          <type>int</type>
          <declname>nitems</declname>
        </param>
        <briefdescription>
<para>Handles post-general_work() cleanup and data transfer. </para>
        </briefdescription>
        <detaileddescription>
<para>Called directly after call to general_work() completes and is used for data transfer (and perhaps other administrative activities)</para>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>nitems</parametername>
</parameternamelist>
<parameterdescription>
<para>is the number of items produced by the general_work() function. </para>
</parameterdescription>
</parameteritem>
</parameterlist>
</para>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="44" column="10"/>
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        <type>bool</type>
        <definition>bool gr::host_buffer::do_allocate_buffer</definition>
        <argsstring>(size_t final_nitems, size_t sizeof_item) override</argsstring>
        <name>do_allocate_buffer</name>
        <qualifiedname>gr::host_buffer::do_allocate_buffer</qualifiedname>
        <reimplements refid="classgr_1_1buffer__single__mapped_1af2a85b38753e63d23a6bb3b963383384">do_allocate_buffer</reimplements>
        <param>
          <type>size_t</type>
          <declname>final_nitems</declname>
        </param>
        <param>
          <type>size_t</type>
          <declname>sizeof_item</declname>
        </param>
        <briefdescription>
<para>Do actual buffer allocation. Inherited from <ref refid="classgr_1_1buffer__single__mapped" kindref="compound">buffer_single_mapped</ref>. </para>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="49" column="10"/>
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        <type>void *</type>
        <definition>void * gr::host_buffer::write_pointer</definition>
        <argsstring>() override</argsstring>
        <name>write_pointer</name>
        <qualifiedname>gr::host_buffer::write_pointer</qualifiedname>
        <reimplements refid="classgr_1_1buffer_1a23b016f0a5a493e5a73da972a5040222">write_pointer</reimplements>
        <briefdescription>
<para>Return a pointer to the write buffer depending on the context. </para>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="54" column="10"/>
      </memberdef>
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        <type>const void *</type>
        <definition>const void * gr::host_buffer::_read_pointer</definition>
        <argsstring>(unsigned int read_index) override</argsstring>
        <name>_read_pointer</name>
        <qualifiedname>gr::host_buffer::_read_pointer</qualifiedname>
        <reimplements refid="classgr_1_1buffer_1a3db6fc56cd5b5df7f672ecc4288fc5eb">_read_pointer</reimplements>
        <param>
          <type>unsigned int</type>
          <declname>read_index</declname>
        </param>
        <briefdescription>
<para>return pointer to read buffer depending on the context </para>
        </briefdescription>
        <detaileddescription>
<para>The return value points to at least items_available() items. </para>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="61" column="16"/>
      </memberdef>
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        <type>bool</type>
        <definition>bool gr::host_buffer::input_blocked_callback</definition>
        <argsstring>(int items_required, int items_avail, unsigned read_index) override</argsstring>
        <name>input_blocked_callback</name>
        <qualifiedname>gr::host_buffer::input_blocked_callback</qualifiedname>
        <reimplements refid="classgr_1_1buffer__single__mapped_1a24ff84645e8899e705fa991e511ab993">input_blocked_callback</reimplements>
        <param>
          <type>int</type>
          <declname>items_required</declname>
        </param>
        <param>
          <type>int</type>
          <declname>items_avail</declname>
        </param>
        <param>
          <type>unsigned</type>
          <declname>read_index</declname>
        </param>
        <briefdescription>
<para>Callback function that the scheduler will call when it determines that the input is blocked. Override this function if needed. </para>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="67" column="10"/>
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        <type>bool</type>
        <definition>bool gr::host_buffer::output_blocked_callback</definition>
        <argsstring>(int output_multiple, bool force) override</argsstring>
        <name>output_blocked_callback</name>
        <qualifiedname>gr::host_buffer::output_blocked_callback</qualifiedname>
        <reimplements refid="classgr_1_1buffer__single__mapped_1ac9f70c0b7e5e983f824673595c04634b">output_blocked_callback</reimplements>
        <param>
          <type>int</type>
          <declname>output_multiple</declname>
        </param>
        <param>
          <type>bool</type>
          <declname>force</declname>
        </param>
        <briefdescription>
<para>Callback function that the scheduler will call when it determines that the output is blocked. </para>
        </briefdescription>
        <detaileddescription>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="75" column="10"/>
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    <sectiondef kind="private-func">
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        <type></type>
        <definition>gr::host_buffer::host_buffer</definition>
        <argsstring>(int nitems, size_t sizeof_item, uint64_t downstream_lcm_nitems, uint32_t downstream_max_out_mult, block_sptr link, block_sptr buf_owner)</argsstring>
        <name>host_buffer</name>
        <qualifiedname>gr::host_buffer::host_buffer</qualifiedname>
        <param>
          <type>int</type>
          <declname>nitems</declname>
        </param>
        <param>
          <type>size_t</type>
          <declname>sizeof_item</declname>
        </param>
        <param>
          <type>uint64_t</type>
          <declname>downstream_lcm_nitems</declname>
        </param>
        <param>
          <type>uint32_t</type>
          <declname>downstream_max_out_mult</declname>
        </param>
        <param>
          <type>block_sptr</type>
          <declname>link</declname>
        </param>
        <param>
          <type>block_sptr</type>
          <declname>buf_owner</declname>
        </param>
        <briefdescription>
<para>constructor is private. Use the static make_host_buffer function to create instances. </para>
        </briefdescription>
        <detaileddescription>
<para>Allocate a buffer that holds at least <computeroutput>nitems</computeroutput> of size <computeroutput>sizeof_item</computeroutput>.</para>
<para><parameterlist kind="param"><parameteritem>
<parameternamelist>
<parametername>nitems</parametername>
</parameternamelist>
<parameterdescription>
<para>is the minimum number of items the buffer will hold. </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>sizeof_item</parametername>
</parameternamelist>
<parameterdescription>
<para>is the size of an item in bytes. </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>downstream_lcm_nitems</parametername>
</parameternamelist>
<parameterdescription>
<para>is the least common multiple of the items to read by downstream blocks </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>downstream_max_out_mult</parametername>
</parameternamelist>
<parameterdescription>
<para>is the maximum output multiple of all downstream blocks </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>link</parametername>
</parameternamelist>
<parameterdescription>
<para>is the block that writes to this buffer. </para>
</parameterdescription>
</parameteritem>
<parameteritem>
<parameternamelist>
<parametername>buf_owner</parametername>
</parameternamelist>
<parameterdescription>
<para>if the block that owns the buffer which may or may not be the same as the block that writes to this buffer</para>
</parameterdescription>
</parameteritem>
</parameterlist>
The total size of the buffer will be rounded up to a system dependent boundary. This is typically the system page size, but under MS windows is 64KB. </para>
        </detaileddescription>
        <inbodydescription>
        </inbodydescription>
        <location file="gnuradio-runtime/include/gnuradio/host_buffer.h" line="121" column="5"/>
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    </briefdescription>
    <detaileddescription>
    </detaileddescription>
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        <label>gr::buffer</label>
        <link refid="classgr_1_1buffer"/>
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