Ck::IO::Manager Class Reference

Class to mediate IO operations between Charm++ application code and underlying filesystems. More...

#include <ckio.h>

Inheritance diagram for Ck::IO::Manager:

[legend]

Collaboration diagram for Ck::IO::Manager:

[legend]

Public Member Functions
	Manager ()
void	prepareOutput (const char *name, size_t bytes, CkCallback ready, CkCallback complete, Options opts=Options())
	Application-facing methods, invoked locally on the calling PE.
void	write (Token token, const char *data, size_t bytes, size_t offset)
void	prepareInput (const char *name, CkCallback ready, Options opts=Options())
void	read (Token token, void *data, size_t bytes, size_t offset, CkCallback complete)
void	write_forwardData (Token token, const char *data, size_t bytes, size_t offset)
	Internal methods, used for interaction among IO managers across the system.
void	write_dataWritten (Token token, size_t bytes)
Data Fields
	Manager_SDAG_CODE
Private Member Functions
int	lastActivePE (const Options &opts)
Private Attributes
int	filesOpened
Token	nextToken
std::map< Token, FileInfo >	files
CkCallback	nextReady

---

Detailed Description

Class to mediate IO operations between Charm++ application code and underlying filesystems.

Tokens are passed to

• ready callbacks, which the application then passes to the local methods when initiating operations.

Definition at line 105 of file ckio.h.

---

Constructor & Destructor Documentation

Ck::IO::Manager::Manager

(

)

Definition at line 7 of file ckio.C.

---

Member Function Documentation

void Ck::IO::Manager::prepareOutput	(	const char *	name,
		size_t	bytes,
		CkCallback	ready,
		CkCallback	complete,
		Options	opts = Options()
	)

Application-facing methods, invoked locally on the calling PE.

Definition at line 12 of file ckio.C.

void Ck::IO::Manager::write	(	Token	token,
		const char *	data,
		size_t	bytes,
		size_t	offset
	)

Definition at line 18 of file ckio.C.

References Ck::IO::Options::basePE, files, min(), opts, Ck::IO::Options::peStripe, and Ck::IO::Options::skipPEs.

void Ck::IO::Manager::prepareInput	(	const char *	name,
		CkCallback	ready,
		Options	opts = Options()
	)

Definition at line 90 of file ckio.C.

void Ck::IO::Manager::read	(	Token	token,
		void *	data,
		size_t	bytes,
		size_t	offset,
		CkCallback	complete
	)

Definition at line 94 of file ckio.C.

void Ck::IO::Manager::write_forwardData	(	Token	token,
		const char *	data,
		size_t	bytes,
		size_t	offset
	)

Internal methods, used for interaction among IO managers across the system.

Definition at line 31 of file ckio.C.

References Ck::IO::buffer::array, Ck::IO::buffer::bytes_filled_so_far, Converse::CkMyPe(), errno, Ck::IO::buffer::expect(), files, Ck::IO::buffer::insertData(), Ck::IO::buffer::isFull(), and min().

void Ck::IO::Manager::write_dataWritten	(	Token	token,
		size_t	bytes
	)

Definition at line 81 of file ckio.C.

References Converse::CkMyPe(), and files.

int Ck::IO::Manager::lastActivePE

(

const Options &

opts

)

[inline, private]

Definition at line 133 of file ckio.h.

References Ck::IO::Options::activePEs, Ck::IO::Options::basePE, and Ck::IO::Options::skipPEs.

---

Field Documentation

Ck::IO::Manager::Manager_SDAG_CODE

Definition at line 109 of file ckio.h.

int Ck::IO::Manager::filesOpened [private]

Definition at line 128 of file ckio.h.

Token Ck::IO::Manager::nextToken [private]

Definition at line 129 of file ckio.h.

std::map<Token, FileInfo> Ck::IO::Manager::files [private]

Definition at line 130 of file ckio.h.

Referenced by write(), write_dataWritten(), and write_forwardData().

CkCallback Ck::IO::Manager::nextReady [private]

Definition at line 131 of file ckio.h.

---

The documentation for this class was generated from the following files:

• libs/ck-libs/io/ckio.h
• libs/ck-libs/io/ckio.C