void Comm::init(int argc, char** args)
{
if ( is_finalized() )
throw SetupError( FromHere(), "Should not call Comm::initialize() after Comm::finalize()" );
if( !is_initialized() && !is_finalized() ) // then initialize
{
MPI_CHECK_RESULT(MPI_Init,(&argc,&args));
// CFinfo << "MPI (version " << version() << ") -- initiated" << CFendl;
}
m_comm = MPI_COMM_WORLD;
}
void Comm::finalize()
{
if( is_initialized() && !is_finalized() ) // then finalized
{
MPI_CHECK_RESULT(MPI_Finalize,());
// CFinfo << "MPI (version " << version() << ") -- finalized" << CFendl;
}
static void
verify_checksum (int argc, char *argv[])
{
void *addr = NULL;
char *bp, *ep;
logChecksum *master, *checksums;
unsigned short mcsum;
int num_pages;
if (argc != 1)
{
printf ("-ERR usage: vc <file>\n");
return;
}
addr = get_addr (argv[0]);
if (addr == NULL)
{
return;
}
/* set up pointers */
bp = (char *) addr;
ep = bp + SMR_LOG_FILE_DATA_SIZE;
master = (logChecksum *) ep;
checksums = master + 1;
if (is_finalized (master))
{
num_pages = SMR_LOG_NUM_CHECKSUM - 1;
}
else
{
num_pages = master->off;
}
printf ("num_pages:%d\n", num_pages);
mcsum = crc16 ((char *) checksums, sizeof (logChecksum) * num_pages, 0);
if (mcsum != master->checksum)
{
printf ("master checksum error. expected:0x%4x master:0x%4x\n", mcsum,
master->checksum);
}
else
{
printf ("+OK checksum verified. 0x%4x\n", mcsum);
}
if (addr)
{
release_addr (addr);
}
}