eformat::write Namespace Reference

Classes
class	FullEventFragment
struct	node_t
class	ROBFragment
	forward More...
class	ROSFragment
	forward More...
class	SubDetectorFragment
	forward More...
Typedefs
typedef eformat::write::node_t	node_t
Functions
void	set (node_t &i, const uint32_t *b, size_t l, node_t *n=0)
void	set (node_t &i, const struct iovec &v, node_t *n=0)
void	cat (node_t *n, const struct iovec *v, uint32_t count)
void	cat (node_t *n, uint32_t count)
uint32_t	count (const node_t &list)
uint32_t	count_words (const node_t &list)
uint32_t	copy (const node_t &list, uint32_t *dest, size_t max)
uint32_t	shallow_copy (const node_t &list, struct iovec *dest, uint32_t max)
void	set (node_t &i, const uint32_t *b, size_t l, node_t *n)
void	set (node_t &i, const struct iovec &v, node_t *n)
void	cat (node_t *n, const struct iovec *v, uint32_t count)
void	cat (node_t *n, uint32_t count)
uint32_t	count (const node_t &list)
uint32_t	count_words (const node_t &list)
uint32_t	copy (const node_t &list, uint32_t *dest, size_t max)
uint32_t	shallow_copy (const node_t &list, struct iovec *dest, uint32_t max)

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Typedef Documentation

typedef struct eformat::write::node_t eformat::write::node_t

Defines what is a valid "I/O vector" (a.k.a. iov) node list for eformat

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Function Documentation

void eformat::write::set	(	node_t &	i,
		const uint32_t *	b,
		size_t	l,
		node_t *	n = 0
	)

Sets an IOV base values

Parameters:

	i	the node to be set
	b	the base address to be used by this IOV
	l	the size of the page, in words
	n	the next node this node should point to

Definition at line 16 of file node.cxx.

Referenced by rdbModel::InterRow::addSet(), cat(), eformat::write::FullEventFragment::FullEventFragment(), eformat::write::SubDetectorFragment::operator=(), eformat::write::ROSFragment::operator=(), eformat::write::ROBFragment::operator=(), eformat::write::FullEventFragment::operator=(), EvtGenKine::PhaseSpace(), RecMucTrack::RecMucTrack(), eformat::write::ROBFragment::ROBFragment(), eformat::write::ROSFragment::ROSFragment(), and eformat::write::SubDetectorFragment::SubDetectorFragment().

{ 
  i.base = const_cast<uint32_t*>(b); 
  i.size_word = l; 
  i.next = n;
}

void eformat::write::set	(	node_t &	i,
		const struct iovec &	v,
		node_t *	n = 0
	)

Sets an IOV base values

Parameters:

	i	the node to be set
	v	the I/O vector node to use as basis
	n	the next node this node should point to

Definition at line 23 of file node.cxx.

{ 
  i.base = reinterpret_cast<uint32_t*>(v.iov_base);
  i.size_word = v.iov_len/4; 
  i.next = n;
}

void eformat::write::cat	(	node_t *	n,
		const struct iovec *	v,
		uint32_t	count
	)

Concatenates a set of IOV's to make up a list as required by some eformat::write functionality.

Parameters:

	n	the first node_t of a vector of node_t's. The C array pointed by n should have at least "count" available positions
	v	the first IOV node of a vector
	count	the number of IOV nodes pointed by "v"

Definition at line 30 of file node.cxx.

{
  for (size_t i=0; i<(count-1); ++i) set(n[i], v[i], &n[i+1]);
  set(n[count-1], v[count-1], 0);
}

void eformat::write::cat	(	node_t *	n,
		uint32_t	count
	)

Concatenates an already set vector of eformat::write::node_t to make up a valid list.

Parameters:

	n	the first node_t of a vector of node_t's. The C array pointed by n should have, exactly, "count" available positions
	count	the number of IOV nodes pointed by "v"

Definition at line 36 of file node.cxx.

References genRecEmupikp::i, next, and eformat::write::node_t::next.

{
  for (size_t i=0; i<(count-1); ++i) n[i].next = &n[i+1];
  n[count-1].next = 0;
}

uint32_t eformat::write::count

(

const node_t &

list

)

Counts how many pages I'm made of

Parameters:

list

The top of the list

Definition at line 42 of file node.cxx.

References eformat::write::node_t::next.

Referenced by eformat::write::FullEventFragment::FullEventFragment(), eformat::write::ROSFragment::ROSFragment(), and eformat::write::SubDetectorFragment::SubDetectorFragment().

{
  const eformat::write::node_t* current = &list;
  uint32_t retval = 0;
  while (current) {
    ++retval;
    current = current->next;
  }
  return retval;
}

uint32_t eformat::write::count_words

(

const node_t &

list

)

Count how many words I'm made of

Parameters:

list

The top of the list

Definition at line 53 of file node.cxx.

References eformat::write::node_t::next, and eformat::write::node_t::size_word.

{
  const eformat::write::node_t* current = &list;
  uint32_t retval = 0;
  while (current) {
    retval += current->size_word;
    current = current->next;
  }
  return retval;
}

uint32_t eformat::write::copy	(	const node_t &	list,
		uint32_t *	dest,
		size_t	max
	)

Performs a memcpy like operation, concatenating the list given as parameter to a block of memory, as fast as possible.

Parameters:

	list	The top of the list
	dest	The destination block of memory
	max	The number of 32-bit words allocated in "dest"

Returns:

The number of words copied, in total. If the return value was zero, a problem with the total destination size length was detected and the copy operation may have undergone in an incomplete way

Definition at line 64 of file node.cxx.

References eformat::write::node_t::base, eformat::write::node_t::next, and eformat::write::node_t::size_word.

Referenced by Event::RelTable< T1, T2 >::bindRelationNoDup(), eformat::old::convert(), convert_ros(), TrkRecoTrk::copyReps(), EvtSpinAmp::EvtSpinAmp(), IRawDataCnvSvc::Leaf::operator=(), RootCnvSvc::Leaf::operator==(), IRawDataCnvSvc::Leaf::operator==(), and RawDataOutputSvc::putEvent().

{
  const eformat::write::node_t* current = &list;
  uint32_t cpos = 0;
  while (current) {
    if (cpos + current->size_word > max) return 0;
    if (current->size_word > 0 && current->base) {
      memcpy(&dest[cpos], current->base, sizeof(uint32_t)*current->size_word);
      cpos += current->size_word;
    }
    current = current->next;
  }
  return cpos;
}

uint32_t eformat::write::shallow_copy	(	const node_t &	list,
		struct iovec *	dest,
		uint32_t	max
	)

Performs a shallow copy like operation, concatenating the list given as parameter to a vector of iovec nodes. This will only copy pointers and sizes, but not real data.

Parameters:

	list	The top of the list
	dest	The destination vector of iovec nodes
	max	The number of iovec nodes I can use there

Returns:

The number of pages used, in total. If the return value was zero, a problem with the total destination size length was detected and the copy operation may have undergone in an incomplete way

Definition at line 80 of file node.cxx.

References eformat::write::node_t::base, eformat::write::node_t::next, and eformat::write::node_t::size_word.

Referenced by main().

{
  const eformat::write::node_t* current = &list;
  uint32_t cpos = 0;
  while (current) {
    if (cpos > max) return 0;
    if (current->size_word > 0 && current->base) {
      dest[cpos].iov_base = 
        reinterpret_cast<void*>(const_cast<uint32_t*>(current->base));
      dest[cpos].iov_len = sizeof(uint32_t)*current->size_word;
      ++cpos;
    }
    current = current->next;
  }
  return cpos;
}

void eformat::write::set	(	node_t &	i,
		const uint32_t *	b,
		size_t	l,
		node_t *	n = 0
	)

Sets an IOV base values

Parameters:

	i	the node to be set
	b	the base address to be used by this IOV
	l	the size of the page, in words
	n	the next node this node should point to

Definition at line 16 of file node.cxx.

References genRecEmupikp::i.

{ 
  i.base = const_cast<uint32_t*>(b); 
  i.size_word = l; 
  i.next = n;
}

void eformat::write::set	(	node_t &	i,
		const struct iovec &	v,
		node_t *	n = 0
	)

Sets an IOV base values

Parameters:

	i	the node to be set
	v	the I/O vector node to use as basis
	n	the next node this node should point to

Definition at line 23 of file node.cxx.

References genRecEmupikp::i.

{ 
  i.base = reinterpret_cast<uint32_t*>(v.iov_base);
  i.size_word = v.iov_len/4; 
  i.next = n;
}

void eformat::write::cat	(	node_t *	n,
		const struct iovec *	v,
		uint32_t	count
	)

Concatenates a set of IOV's to make up a list as required by some eformat::write functionality.

Parameters:

	n	the first node_t of a vector of node_t's. The C array pointed by n should have at least "count" available positions
	v	the first IOV node of a vector
	count	the number of IOV nodes pointed by "v"

Definition at line 30 of file node.cxx.

References genRecEmupikp::i, and set().

{
  for (size_t i=0; i<(count-1); ++i) set(n[i], v[i], &n[i+1]);
  set(n[count-1], v[count-1], 0);
}

void eformat::write::cat	(	node_t *	n,
		uint32_t	count
	)

Concatenates an already set vector of eformat::write::node_t to make up a valid list.

Parameters:

	n	the first node_t of a vector of node_t's. The C array pointed by n should have, exactly, "count" available positions
	count	the number of IOV nodes pointed by "v"

Definition at line 36 of file node.cxx.

References genRecEmupikp::i, eformat::write::node_t::next, and next.

{
  for (size_t i=0; i<(count-1); ++i) n[i].next = &n[i+1];
  n[count-1].next = 0;
}

uint32_t eformat::write::count

(

const node_t &

list

)

Counts how many pages I'm made of

Parameters:

list

The top of the list

Definition at line 42 of file node.cxx.

References eformat::write::node_t::next.

Referenced by eformat::write::FullEventFragment::FullEventFragment(), eformat::write::ROSFragment::ROSFragment(), and eformat::write::SubDetectorFragment::SubDetectorFragment().

{
  const eformat::write::node_t* current = &list;
  uint32_t retval = 0;
  while (current) {
    ++retval;
    current = current->next;
  }
  return retval;
}

uint32_t eformat::write::count_words

(

const node_t &

list

)

Count how many words I'm made of

Parameters:

list

The top of the list

Definition at line 53 of file node.cxx.

References eformat::write::node_t::next, and eformat::write::node_t::size_word.

{
  const eformat::write::node_t* current = &list;
  uint32_t retval = 0;
  while (current) {
    retval += current->size_word;
    current = current->next;
  }
  return retval;
}

uint32_t eformat::write::copy	(	const node_t &	list,
		uint32_t *	dest,
		size_t	max
	)

Performs a memcpy like operation, concatenating the list given as parameter to a block of memory, as fast as possible.

Parameters:

	list	The top of the list
	dest	The destination block of memory
	max	The number of 32-bit words allocated in "dest"

Returns:

The number of words copied, in total. If the return value was zero, a problem with the total destination size length was detected and the copy operation may have undergone in an incomplete way

Definition at line 64 of file node.cxx.

References eformat::write::node_t::base, eformat::write::node_t::next, and eformat::write::node_t::size_word.

Referenced by Event::RelTable< T1, T2 >::bindRelationNoDup(), eformat::old::convert(), convert_ros(), TrkRecoTrk::copyReps(), EvtSpinAmp::EvtSpinAmp(), IRawDataCnvSvc::Leaf::operator=(), IRawDataCnvSvc::Leaf::operator==(), RootCnvSvc::Leaf::operator==(), and RawDataOutputSvc::putEvent().

{
  const eformat::write::node_t* current = &list;
  uint32_t cpos = 0;
  while (current) {
    if (cpos + current->size_word > max) return 0;
    if (current->size_word > 0 && current->base) {
      memcpy(&dest[cpos], current->base, sizeof(uint32_t)*current->size_word);
      cpos += current->size_word;
    }
    current = current->next;
  }
  return cpos;
}

uint32_t eformat::write::shallow_copy	(	const node_t &	list,
		struct iovec *	dest,
		uint32_t	max
	)

Performs a shallow copy like operation, concatenating the list given as parameter to a vector of iovec nodes. This will only copy pointers and sizes, but not real data.

Parameters:

	list	The top of the list
	dest	The destination vector of iovec nodes
	max	The number of iovec nodes I can use there

Returns:

The number of pages used, in total. If the return value was zero, a problem with the total destination size length was detected and the copy operation may have undergone in an incomplete way

Definition at line 80 of file node.cxx.

References eformat::write::node_t::base, eformat::write::node_t::next, and eformat::write::node_t::size_word.

Referenced by main().

{
  const eformat::write::node_t* current = &list;
  uint32_t cpos = 0;
  while (current) {
    if (cpos > max) return 0;
    if (current->size_word > 0 && current->base) {
      dest[cpos].iov_base = 
        reinterpret_cast<void*>(const_cast<uint32_t*>(current->base));
      dest[cpos].iov_len = sizeof(uint32_t)*current->size_word;
      ++cpos;
    }
    current = current->next;
  }
  return cpos;
}

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