SafeMPI::Intracomm::Impl Struct Reference

Public Member Functions
	Impl (const MPI_Comm &c, int m, int n, bool o)
	~Impl ()
int	unique_reserved_tag ()
	Returns a unique tag reserved for long-term use (0<tag<1000) More...
int	unique_tag ()
	Returns a unique tag for temporary use (1023<tag<=4095) More...

Static Public Member Functions
static int	unique_tag_period ()

Public Attributes
MPI_Comm	comm
int	me
int	numproc
bool	owner
int	urtag
int	utag

Constructor & Destructor Documentation

Impl()

SafeMPI::Intracomm::Impl::Impl ( const MPI_Comm &  c, int  m, int  n, bool  o  )

inline

References comm, MADNESS_ASSERT, and MPI_COMM_NULL.

~Impl()

SafeMPI::Intracomm::Impl::~Impl ( )

inline

References comm, SafeMPI::Intracomm::Comm_compare(), SafeMPI::Is_finalized(), SafeMPI::Is_initialized(), MPI_Comm_free(), MPI_COMM_NULL, MPI_COMM_WORLD, and owner.

Member Function Documentation

unique_reserved_tag()

int SafeMPI::Intracomm::Impl::unique_reserved_tag ( )

inline

Returns a unique tag reserved for long-term use (0<tag<1000)

Get a tag from this routine for long-term/repeated use.

Tags in [1000,1023] are statically assigned.

References MADNESS_EXCEPTION, and urtag.

unique_tag()

int SafeMPI::Intracomm::Impl::unique_tag ( )

inline

Returns a unique tag for temporary use (1023<tag<=4095)

These tags are intended for one time use to avoid tag collisions with other messages around the same time period. It simply increments/wraps a counter and returns the next legal value.

So that send and receiver agree on the tag all processes need to call this routine in the same sequence.

References utag.

unique_tag_period()

static int SafeMPI::Intracomm::Impl::unique_tag_period ( )

inlinestatic

Returns

the period of repeat of unique tags produces by unique_tag()

Referenced by SafeMPI::Intracomm::unique_tag_period().

Member Data Documentation

comm

MPI_Comm SafeMPI::Intracomm::Impl::comm

Referenced by Impl(), and ~Impl().

me

int SafeMPI::Intracomm::Impl::me

numproc

int SafeMPI::Intracomm::Impl::numproc

owner

bool SafeMPI::Intracomm::Impl::owner

Referenced by ~Impl().

urtag

int SafeMPI::Intracomm::Impl::urtag

Referenced by unique_reserved_tag().

utag

int SafeMPI::Intracomm::Impl::utag

Referenced by unique_tag().

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The documentation for this struct was generated from the following file:

• safempi.h