sources/native/native_channels.c

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/*
** Copyright 2009-2011, helixis.org
** All rights reserved.
**
** 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 helixis.org 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.
*/

/*
** INCLUDES
*/

#include "hlx/core.h"
#include "helixis_internal.h"

#if !defined(HLX_BUILD_WITH_PARALLEL_THREADING)

#ifdef __cplusplus
extern "C"      {
#endif

/*
** EXTERNALS
*/

extern hlx_api gl_api;

/*
** GLOBALS
*/

static _hlx_channel_manager gl_channel_manager;

/*
** FUNCTIONS
*/

static hlx_list_node*                   _hlx_get_channel_by_hash(unsigned long id)
{
        hlx_list_node*                  it;

        for (it = gl_channel_manager.channels.first; it; it = it->next)
                if (((_hlx_channel*)it->data)->hash_code == id)
                        return (it);
        return (0);
}

HLX_CHAN_WRITE_GENERATOR(short, short, s)
HLX_CHAN_READ_GENERATOR(short, short, s)

HLX_CHAN_WRITE_GENERATOR(int, int, i)
HLX_CHAN_READ_GENERATOR(int, int, i)

HLX_CHAN_WRITE_GENERATOR(char, char, c)
HLX_CHAN_READ_GENERATOR(char, char, c)

HLX_CHAN_WRITE_GENERATOR(float, float, f)
HLX_CHAN_READ_GENERATOR(float, float, f)

HLX_CHAN_WRITE_GENERATOR(ptr, void *, p)
HLX_CHAN_READ_GENERATOR(ptr, void *, p)

hlx_channel_errors              hlx_chan_create(unsigned long id)
{
        _hlx_channel            *chan;
        hlx_list_node           *node;

        node = _hlx_get_channel_by_hash(id);
        if (node != 0)
                return (CHAN_ERROR_ALREADY_EXISTS);
        if ((chan = gl_api.malloc_entry(sizeof(_hlx_channel))) == 0)
                return (CHAN_ERROR_MEMORY_EXHAUSTED);
        chan->hash_code = id;
        chan->status = HLX_CHAN_AVAILABLE;
        if (hlx_list_push_back(&gl_channel_manager.channels, chan) == 0)
        {
                gl_api.free_entry(chan);
                return (CHAN_ERROR_MEMORY_EXHAUSTED);
        }
        return (CHAN_ERROR_SUCCESS);
}

void    _init_channel_manager(void)
{
        hlx_list_construct(&gl_channel_manager.channels);
}

void    _destroy_channel_manager(void)
{
        hlx_list_node*                  it;

        for (it = gl_channel_manager.channels.first; it; it = it->next)
                gl_api.free_entry(((_hlx_channel*)it->data));
        hlx_list_destruct(&gl_channel_manager.channels);
}

#endif /* HLX_BUILD_WITH_KERNEL_THREAD */

#ifdef __cplusplus
}
#endif

/*
** END OF FILE
*/