/*

   BLIS
   An object-based framework for developing high-performance BLAS-like
   libraries.

   Copyright (C) 2014, The University of Texas at Austin

   Redistribution and use in source and binary forms, with or without
   modification, are permitted provided that the following conditions are
   met:
    - Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    - Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    - Neither the name of The University of Texas at Austin nor the names
      of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/


/*
// -- Control tree node definition --

struct cntl_s
{
	// Basic fields (usually required).
	opid_t         family;
	bszid_t        bszid;
	void*          var_func;
	struct cntl_s* sub_node;

	// Optional fields (needed only by some operations such as packm).
	// NOTE: first field of params must be a uint64_t containing the size
	// of the struct.
	void*          params;

	// Internal fields that track "cached" data.
	mem_t          pack_mem;
};
typedef struct cntl_s cntl_t;
*/


// -- Control tree prototypes --

cntl_t* bli_cntl_create_node
     (
       opid_t  family,
       bszid_t bszid,
       void*   var_func,
       void*   params,
       cntl_t* sub_node
     );

void bli_cntl_free_node
     (
       cntl_t* cntl
     );

void bli_cntl_clear_node
     (
       cntl_t* cntl
     );

// -----------------------------------------------------------------------------

void bli_cntl_free
     (
       cntl_t* cntl,
       thrinfo_t* thread
     );

void bli_cntl_free_w_thrinfo
     (
       cntl_t* cntl,
       thrinfo_t* thread
     );

void bli_cntl_free_wo_thrinfo
     (
       cntl_t* cntl
     );

cntl_t* bli_cntl_copy
     (
       cntl_t* cntl
     );

void bli_cntl_mark_family
     (
       opid_t  family,
       cntl_t* cntl
     );

// -----------------------------------------------------------------------------

dim_t bli_cntl_calc_num_threads_in
     (
       rntm_t* rntm,
       cntl_t* cntl
     );

// -----------------------------------------------------------------------------

// cntl_t query (fields only)

static opid_t bli_cntl_family( cntl_t* cntl )
{
	return cntl->family;
}

static bszid_t bli_cntl_bszid( cntl_t* cntl )
{
	return cntl->bszid;
}

static void* bli_cntl_var_func( cntl_t* cntl )
{
	return cntl->var_func;
}

static cntl_t* bli_cntl_sub_node( cntl_t* cntl )
{
	return cntl->sub_node;
}

static void* bli_cntl_params( cntl_t* cntl )
{
	return cntl->params;
}

static uint64_t bli_cntl_params_size( cntl_t* cntl )
{
	// The first 64 bytes is always the size of the params structure.
	return *( ( uint64_t* )(cntl->params) );
}

static mem_t* bli_cntl_pack_mem( cntl_t* cntl )
{
	return &(cntl->pack_mem);
}

// cntl_t query (complex)

static bool_t bli_cntl_is_leaf( cntl_t* cntl )
{
	return ( bool_t )
	       ( bli_cntl_sub_node( cntl ) == NULL );
}

static bool_t bli_cntl_does_part( cntl_t* cntl )
{
	return ( bool_t )
	       ( bli_cntl_bszid( cntl ) != BLIS_NO_PART );
}

// cntl_t modification

static void bli_cntl_set_family( opid_t family, cntl_t* cntl )
{
	cntl->family = family;
}

static void bli_cntl_set_bszid( bszid_t bszid, cntl_t* cntl )
{
	cntl->bszid = bszid;
}

static void bli_cntl_set_var_func( void* var_func, cntl_t* cntl )
{
	cntl->var_func = var_func;
}

static void bli_cntl_set_sub_node( cntl_t* sub_node, cntl_t* cntl )
{
	cntl->sub_node = sub_node;
}

static void bli_cntl_set_params( void* params, cntl_t* cntl )
{
	cntl->params = params;
}

static void bli_cntl_set_pack_mem( mem_t* pack_mem, cntl_t* cntl )
{
	cntl->pack_mem = *pack_mem;
}

