/*----------------------------------------------------------------------------*/
/* smdemo0_rcv.c                                                              */
/*----------------------------------------------------------------------------*/

/*----------------------------------------------------------------------------*/
/* This file is part of LibShMem                                              */
/*                                                                            */
/*    LibShMem is free software: you can redistribute it and/or modify it     */
/*    under the terms of the GNU Lesser General Public License as published   */
/*    by the Free Software Foundation, either version 3 of the License, or    */
/*    (at your option) any later version.                                     */
/*                                                                            */
/*    LibShMem is distributed in the hope that it will be useful,             */
/*    but WITHOUT ANY WARRANTY; without even the implied warranty of          */
/*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            */
/*    GNU Lesser General Public License for more details.                     */
/*                                                                            */
/*    You should have received a copy of the GNU Lesser General Public        */
/*    License along with Drummer. If not, see                                 */
/*    <https://www.gnu.org/licenses/>.                                        */
/*----------------------------------------------------------------------------*/



/*----------------------------------------------------------------------------*/
/* Includes                                                                   */
/*----------------------------------------------------------------------------*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <errno.h>

#include <node.h>

#ifndef SM_MODE
#   define SM_MODE 0 /* Utilisation des API sécurisés */
#endif

#include <shmem.h>





#define  LOG_ERROR   10
#define  LOG_WARNING 20
#define  LOG_INFO    30
#define  LOG_TRACE   40





void  Log_Print( int, int, int, char  *, ...);

int main( int, char  **);





void  Log_Print( int  Log_Level, int  Verbose_Level, int  Inst_Id, char  *Format_Str, ...)
{
    va_list   args;
    char     *prompt = "rcv";
    int       fmt_size   = 255;
    char      fmt[fmt_size + 1];


    if( Log_Level <= Verbose_Level)
    {
	va_start( args, Format_Str);

	snprintf( fmt, fmt_size, "%s%02d : %s", prompt, Inst_Id, Format_Str);
	vfprintf( stderr, fmt, args);
	fflush( stderr);

	va_end( args);
    }
}





int main( int  ArgC, char  **ArgV)
{
    int          Inst_Id;
    char        *Heap_Name;
    int          Verbose_Level = 30;

    SMT_Heap    *heap_ptr;
    int          locked;
    SMT_Status   status = SMS_OK;
    char        *chunk_ptr;
    int          chunk_id = 0;
    char         input_str[100];
    size_t       input_size = 99;
    

    if( ArgC != 4)
    {
	Log_Print( LOG_ERROR, Verbose_Level, 0, "Usage: %s Inst_Id Heap_Name Verbose_Level\n", ArgV[0]);
	exit( -1);
    }
    else
    {
	Inst_Id       = atoi( ArgV[1]);
	Heap_Name     =       ArgV[2];
	Verbose_Level = atoi( ArgV[3]);

	Log_Print( LOG_INFO, Verbose_Level, Inst_Id, "Inst_Id: (%d)   Heap_Name: [%s]   Verbose_Level: (%d)...\n",
		   Inst_Id, Heap_Name, Verbose_Level);
	fflush( stderr);
    }



    if( ( status = SM_Library_Open( 0, NULL, ( SMD_OPEN | SMD_DEBUG_ALL))) != SMS_OK)
    {
	Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't open LibShMem (%d) !\n", status);

	exit( -1);
    }

    Log_Print( LOG_TRACE, Verbose_Level, Inst_Id, "LibShMem opened !\n");
    
    if( ( status = SM_Heap_Open( Heap_Name, &heap_ptr, 0, ( SMD_OPEN | SMD_NO_LOCK), &locked)) != SMS_OK)
    {
	Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't open heap (%d) !\n", status);
    }
    else
    {    
	Log_Print( LOG_TRACE, Verbose_Level, Inst_Id, "Heap opened !\n");

	while( ( fgets( input_str, input_size, stdin) != NULL) && ( status == SMS_OK))
	{
	    if( ( chunk_ptr = (char  *)atol( input_str)) == NULL)
	    {
		Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Garbage on stdin [%s], skiping !\n", input_str);
	    }
	    else
	    {
		Log_Print( LOG_TRACE, Verbose_Level, Inst_Id, "Received message: [%s]  Id: (%d)   Address: (%lu)\n", chunk_ptr, chunk_id, chunk_ptr);

		chunk_id++;

		if( ( ( status = SM_Heap_Lock( heap_ptr, SMD_WRITE, &locked)) != SMS_OK) && ( locked == TRUE))
		{
		    Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't lock heap (%d) !\n", status);
		}
		else
		{
		    if( ( status = SM_Chunk_Free( heap_ptr, chunk_ptr)) != SMS_OK)
		    {
			Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't free chunk (%d) !\n", status);
		    }
		    else
		    {
			Log_Print( LOG_TRACE, Verbose_Level, Inst_Id, "Chunk: (%lu) freed !\n", chunk_ptr);

			if( ( status = SM_Heap_Unlock( heap_ptr)) != SMS_OK)
			{
			    Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't unlock heap (%d) !\n", status);
			}
		    }
		}
	    }
	}

	Log_Print( LOG_INFO, Verbose_Level, Inst_Id, "Number of message received: (%d) !\n", chunk_id);
	
	if( ( ( status = SM_Heap_Lock( heap_ptr, SMD_WRITE, &locked)) != SMS_OK)  && ( locked == TRUE))
	{
	    Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't lock heap (%d) !\n", status);
	}
	else
	{
	    if( ( status = SM_Heap_Close( heap_ptr)) != SMS_OK)
	    {
		Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't close heap (%d) !\n", status);
	    }
	    else
	    {
		Log_Print( LOG_TRACE, Verbose_Level, Inst_Id, "Heap closed !\n");
	    }
	}
    }

    if( ( status = SM_Library_Close( SMD_CLOSE)) != SMS_OK)
    {
	Log_Print( LOG_ERROR, Verbose_Level, Inst_Id, "Can't close LibShMem (%d) !\n", status);

	exit( -1);
    }
    else
    {
	Log_Print( LOG_TRACE, Verbose_Level, Inst_Id, "LibShMem closed !\n");
    }

    exit( 0);
}