#include <stdint.h>
#include <stdio.h>
#include <pthread.h>
#include <stddef.h>

Data Structures
struct	evfilestruct
	This structure contains information about file opened for either reading or writing. More...

struct	evioBlockHeaderV4_t
	Structure for Sergei Boiarinov's use. More...

Macros
#define	EV_VERSION 6
	Evio format version, not the evio package version #. More...

#define	EV_HDSIZ 8
	Size of block header in 32 bit words. More...

#define	EV_HDSIZ_V6 14

#define	EV_HDSIZ_BYTES 32

#define	EV_HDSIZ_BYTES_V6 56

#define	S_SUCCESS 0

#define	S_FAILURE -1

#define	evio_err_abort(code, text)

#define	S_EVFILE 0x00730000
	evfile.msg Event File I/O More...

#define	S_EVFILE_TRUNC 0x40730001
	Event truncated on read/write. More...

#define	S_EVFILE_BADBLOCK 0x40730002
	Bad block number encountered. More...

#define	S_EVFILE_BADHANDLE 0x80730001
	Bad handle (file/stream not open) More...

#define	S_EVFILE_ALLOCFAIL 0x80730002
	Failed to allocate memory. More...

#define	S_EVFILE_BADFILE 0x80730003
	File format error. More...

#define	S_EVFILE_UNKOPTION 0x80730004
	Unknown option specified. More...

#define	S_EVFILE_UNXPTDEOF 0x80730005
	Unexpected end of file while reading event. More...

#define	S_EVFILE_BADSIZEREQ 0x80730006
	Invalid buffer size request to evIoct. More...

#define	S_EVFILE_BADARG 0x80730007
	Invalid function argument. More...

#define	S_EVFILE_BADMODE 0x80730008
	Wrong mode used in evOpen for this operation. More...

#define	EVIO_SWAP64(x)

#define	EVIO_SWAP32(x)

#define	EVIO_SWAP16(x)

#define	EVIO_TO_64_BITS(low, high)
	Calculate a 64 bit result from 2 32 bit inputs. More...

#define	EVIO_BH_LEN_OFFSET 0
	Offset in bytes from beginning of block header to block length. More...

#define	EVIO_BH_BLKNUM_OFFSET 32
	Offset in bytes from beginning of block header to block number. More...

#define	EVIO_BH_HDRLEN_OFFSET 64
	Offset in bytes from beginning of block header to header length. More...

#define	EVIO_BH_EVCOUNT_OFFSET 96
	Offset in bytes from beginning of block header to event count. More...

#define	EVIO_BH_BITINFO_OFFSET 160
	Offset in bytes from beginning of block header to bitInfo. More...

#define	EVIO_BH_MAGNUM_OFFSET 224
	Offset in bytes from beginning of block header to magic number. More...

Typedefs
typedef struct evfilestruct	EVFILE
	This structure contains information about file opened for either reading or writing. More...

typedef struct evioBlockHeaderV4_t	evioBlockHeaderV4
	Structure for Sergei Boiarinov's use. More...

Functions
void	set_user_frag_select_func (int32_t(*f)(int32_t tag))

int	evioIsLocalHostBigEndian ()
	Is the local host big endian? More...

uint64_t	evioToLongWord (uint32_t word1, uint32_t word2, int needToSwap)
	Take 2, 32 bit words and change that into a 64 bit word, taking endianness and swapping into account. More...

void	evioswap (uint32_t buffer, int tolocal, uint32_t dest)
	Routine to swap the endianness of an evio event (bank). More...

void	evioSwapFileHeaderV6 (uint32_t *header)
	Swap an evio version 6 file header in place (but not the following index arrary, etc). More...

void	evioSwapRecordHeaderV6 (uint32_t *header)
	Swap an evio version 6 record header in place (but not the following index arrary, etc). More...

uint16_t *	swap_int16_t (uint16_t data, unsigned int length, uint16_t dest)
	This routine swaps a buffer of 16 bit integers. More...

uint32_t *	swap_int32_t (uint32_t data, unsigned int length, uint32_t dest)
	This routine swaps a buffer of 32 bit integers. More...

uint64_t *	swap_int64_t (uint64_t data, unsigned int length, uint64_t dest)
	This routine swaps a buffer of 64 bit integers. More...

int	evOpen (char filename, char flags, int *handle)
	This function opens a file for either reading or writing evio format data. More...

int	evOpenBuffer (char buffer, uint32_t bufLen, char flags, int *handle)
	This function allows for either reading or writing evio format data from a buffer. More...

int	evOpenSocket (int sockFd, char flags, int handle)
	This function allows for either reading or writing evio format data from a TCP socket. More...

int	evRead (int handle, uint32_t *buffer, uint32_t size)
	This routine reads from an evio format file/socket/buffer opened with routines evOpen, evOpenBuffer, or evOpenSocket and returns the next event in the buffer arg. More...

int	evReadAlloc (int handle, uint32_t *buffer, uint32_t buflen)
	This routine reads an evio bank from an evio format file/socket/buffer opened with routines evOpen, evOpenBuffer, or evOpenSocket, allocates a buffer and fills it with the bank. More...

int	evReadNoCopy (int handle, const uint32_t *buffer, uint32_t buflen)
	This routine reads from an evio format file/buffer/socket opened with routines evOpen, evOpenBuffer, or evOpenSocket and returns a pointer to the next event residing in an internal buffer. More...

int	evReadRandom (int handle, const uint32_t *pEvent, uint32_t buflen, uint32_t eventNumber)
	This routine does a random access read from an evio format file/buffer opened with routines evOpen or evOpenBuffer. More...

int	evGetRandomAccessTable (int handle, uint32_t **const table, uint32_t len)
	This routine gets an array of event pointers if the handle was opened in random access mode. More...

int	evWrite (int handle, const uint32_t *buffer)
	This routine writes an evio event to an internal buffer containing evio data. More...

int	evIoctl (int handle, char request, void argp)
	This routine changes various evio parameters used in reading and writing. More...

int	evFlush (int handle)
	This function flushes any remaining internally buffered data to file/socket. More...

int	evClose (int handle)
	This routine flushes any existing evio format data in an internal buffer (written to with evWrite) to the final destination file/socket/buffer opened with routines evOpen, evOpenBuffer, or evOpenSocket. More...

int	evGetBufferLength (int handle, uint32_t *length)
	This routine returns the number of bytes written into a buffer so far when given a handle provided by calling evOpenBuffer. More...

int	evGetFileName (int handle, char *name, size_t maxLength)
	This routine gets the name of the file currently being written to and opened with evOpen, Returned string may NOT be written into. More...

int	evIsLastBlock (uint32_t sixthWord)
	Routine to take the 6th word of a block header and tell whether it's the last block or not. More...

int	evGetDictionary (int handle, char *dictionary, uint32_t len)
	This routine gets the dictionary associated with this handle if there is any. More...

int	evStringsToBuf (uint32_t buffer, int bufLen, char strings, int stringCount, int dataLen)
	This routine writes an array of strings, in evio format, into the given buffer. More...

int	evBufToStrings (char buffer, int bufLen, char *pStrArray, int strCount)
	This routine unpacks/parses an evio format buffer containing strings into an array of strings. More...

int	evIsContainer (int type)
	This routine return true (1) if given type is a container, else returns false (0). More...

const char *	evGetTypename (int type)
	This routine returns a string representation of an evio type. More...

char *	evPerror (int error)
	This routine returns a string describing the given error value. More...

void	evPrintBuffer (uint32_t *p, uint32_t len, int swap)
	Routine to print the contents of a buffer. More...

char *	evStrReplace (char orig, const char replace, const char *with)
	This routine substitutes a given string for a specified substring. More...

char *	evStrReplaceEnvVar (const char *orig)
	This routine finds constructs of the form and replaces it with the value of the ENV environmental variable if it exists or with nothing if it doesn't. More...

char *	evStrFindSpecifiers (const char orig, int specifierCount)
	This routine checks a string for C-style printing integer format specifiers. More...

char *	evStrRemoveSpecifiers (const char *orig)
	This routine checks a string for C-style printing integer format specifiers. More...

int	evGenerateBaseFileName (char origName, char baseName, int count)
	This routine generates a (base) file name from a name containing format specifiers and enviromental variables. More...

char *	evGenerateFileName (EVFILE a, int specifierCount, int runNumber, int splitting, int splitNumber, char runType, uint32_t streamId)

Macro Definition Documentation

#define EV_HDSIZ 8

Size of block header in 32 bit words.

Must never be smaller than 8, but can be set larger.

#define EV_HDSIZ_BYTES 32

#define EV_HDSIZ_BYTES_V6 56

#define EV_HDSIZ_V6 14

Referenced by evIoctl(), evioSwapFileHeaderV6(), and evioSwapRecordHeaderV6().

#define EV_VERSION 6

Evio format version, not the evio package version #.

Referenced by evIsLastBlock().

#define EVIO_BH_BITINFO_OFFSET 160

Offset in bytes from beginning of block header to bitInfo.

#define EVIO_BH_BLKNUM_OFFSET 32

Offset in bytes from beginning of block header to block number.

#define EVIO_BH_EVCOUNT_OFFSET 96

Offset in bytes from beginning of block header to event count.

#define EVIO_BH_HDRLEN_OFFSET 64

Offset in bytes from beginning of block header to header length.

#define EVIO_BH_LEN_OFFSET 0

Offset in bytes from beginning of block header to block length.

#define EVIO_BH_MAGNUM_OFFSET 224

Offset in bytes from beginning of block header to magic number.

#define evio_err_abort	(	code,
		text
	)

Value:

do { \
    fprintf (stderr, "%s at \"%s\":%d: %s\n", \
        text, __FILE__, __LINE__, strerror (code)); \
    exit (-1); \
} while (0)

#define S_EVFILE 0x00730000

evfile.msg Event File I/O

Referenced by evPerror().

#define S_EVFILE_ALLOCFAIL 0x80730002

Failed to allocate memory.

Referenced by evGenerateBaseFileName(), evGetDictionary(), evIoctl(), and evPerror().

#define S_EVFILE_BADARG 0x80730007

Invalid function argument.

Referenced by evBufToStrings(), evGenerateBaseFileName(), evGetDictionary(), evGetRandomAccessTable(), evIoctl(), evOpen(), evOpenBuffer(), evOpenSocket(), evPerror(), evRead(), evReadNoCopy(), evReadRandom(), and evStringsToBuf().

#define S_EVFILE_BADBLOCK 0x40730002

Bad block number encountered.

Referenced by evPerror().

#define S_EVFILE_BADFILE 0x80730003

File format error.

Referenced by evPerror(), evReadNoCopy(), and evReadRandom().

#define S_EVFILE_BADHANDLE 0x80730001

Bad handle (file/stream not open)

Referenced by evClose(), evFlush(), evGetBufferLength(), evGetDictionary(), evGetFileName(), evGetRandomAccessTable(), evIoctl(), evPerror(), evRead(), evReadAlloc(), evReadNoCopy(), and evReadRandom().

#define S_EVFILE_BADMODE 0x80730008

Wrong mode used in evOpen for this operation.

Referenced by evGetFileName(), evGetRandomAccessTable(), evPerror(), evRead(), evReadNoCopy(), and evReadRandom().

#define S_EVFILE_BADSIZEREQ 0x80730006

Invalid buffer size request to evIoct.

Referenced by evIoctl(), and evPerror().

#define S_EVFILE_TRUNC 0x40730001

Event truncated on read/write.

Referenced by evGetFileName(), evPerror(), evRead(), and evStringsToBuf().

#define S_EVFILE_UNKOPTION 0x80730004

Unknown option specified.

Referenced by evIoctl(), and evPerror().

#define S_EVFILE_UNXPTDEOF 0x80730005

Unexpected end of file while reading event.

Referenced by evPerror().

#define S_FAILURE -1

Referenced by evBufToStrings(), evClose(), evGenerateBaseFileName(), evGetFileName(), evPerror(), and evReadRandom().

#define S_SUCCESS 0

Referenced by evBufToStrings(), evClose(), evFlush(), evGenerateBaseFileName(), evGetBufferLength(), evGetDictionary(), evGetFileName(), evGetRandomAccessTable(), evIoctl(), evOpenFake(), evPerror(), evRead(), evReadNoCopy(), evReadRandom(), and evStringsToBuf().

Typedef Documentation

typedef struct evfilestruct EVFILE

This structure contains information about file opened for either reading or writing.

typedef struct evioBlockHeaderV4_t evioBlockHeaderV4

Structure for Sergei Boiarinov's use.

Function Documentation

int evGenerateBaseFileName	(	char *	origName,
		char **	baseName,
		int *	count
	)

This routine generates a (base) file name from a name containing format specifiers and enviromental variables.

The given name may contain up to 2, C-style integer format specifiers (such as %03d, or x). If more than 2 are found, an error is returned.

If no "0" precedes any integer between the "%" and the "d" or "x" of the format specifier, it will be added automatically in order to avoid spaces in the final, generated file name. In the evGenerateFileName(EVFILE *, int, int, int, int, char *, uint32_t) routine, the first occurrence will be substituted with the given runNumber value. If the file is being split, the second will be substituted with the split number.

The file name may contain characters of the form which will be substituted with the value of the associated environmental variable or a blank string if none is found.

Parameters

origName	file name to modify
baseName	pointer which gets filled with resulting file name
count	pointer to int filled with number of format specifiers found

Returns: S_SUCCESS if successful; S_FAILURE if bad format specifiers or more that 2 specifiers found; S_EVFILE_BADARG if args are null or origName is invalid; S_EVFILE_ALLOCFAIL if out-of-memory

References evStrFindSpecifiers(), evStrReplaceEnvVar(), S_EVFILE_ALLOCFAIL, S_EVFILE_BADARG, S_FAILURE, and S_SUCCESS.

char* evGenerateFileName	(	EVFILE *	a,
		int	specifierCount,
		int	runNumber,
		int	splitting,
		int	splitNumber,
		char *	runType,
		uint32_t	streamId
	)

This method generates a complete file name from the previously determined baseFileName obtained from calling evGenerateBaseFileName(char *, char **, int *) and stored in the evOpen handle.

All occurrences of the string "%s" in the baseFileName will be substituted with the value of the runType arg or nothing if the runType is null.

If evio data is to be split up into multiple files (split > 0), numbers are used to distinguish between the split files with splitNumber. If baseFileName contains C-style int format specifiers (specifierCount > 0), then the first occurrence will be substituted with the given runNumber value. If the file is being split, the second will be substituted with the splitNumber. If 2 specifiers exist and the file is not being split, no substitutions are made. If no specifier for the splitNumber exists, it is tacked onto the end of the file name. It returns the final file name or NULL if error. Free the result if non-NULL.

If multiple streams of data, each writing a file, end up with the same file name, they can be differentiated by a stream id number. If the id is > 0, the string, ".strm" is appended to the very end of the file followed by the id number (e.g. filename.strm1). This is done after the run type, run number, split numbers, and env vars have been inserted into the file name.

Parameters

a	evio handle (contains file name to use as a basis for the generated file name)
specifierCount	number of C-style int format specifiers in file name arg
runNumber	CODA run number
splitting	is file being split (split > 0)? 1 - yes, 0 - no
splitNumber	number of the split file
runType	run type name
streamId	streamId number (100 > id > -1)

Returns: NULL if error; generated file name (free if non-NULL)

References evfilestruct::baseFileName, EV_WRITEFILE, evStrRemoveSpecifiers(), evStrReplace(), and evfilestruct::rw.

int evIsLastBlock ( uint32_t sixthWord )

Routine to take the 6th word of a block header and tell whether it's the last block or not.

Parameters

sixthWord 6th word of an evio block header

Returns: 1 of this is the last block, else 0

References EV_LASTBLOCK_MASK, EV_LASTBLOCK_MASK_V6, and EV_VERSION.

void evPrintBuffer	(	uint32_t *	p,
		uint32_t	len,
		int	swap
	)

Routine to print the contents of a buffer.

Parameters

p	pointer to buffer
len	number of 32-bit words to print out
swap	swap if true

References EVIO_SWAP32.

char* evStrFindSpecifiers	(	const char *	orig,
		int *	specifierCount
	)

This routine checks a string for C-style printing integer format specifiers.

More specifically, it checks for nd and nx where n can be multiple digits. It makes sure that there is at least one digit between % and x/d and that the first digit is a "0" so that generated filenames contain no white space. It returns the modified string or NULL if error. Free the result if non-NULL. It also returns the number of valid specifiers found in the orig argument.

Parameters

orig	string to be checked/modified
specifierCount	pointer to int which gets filled with the number of valid format specifiers in the orig arg

Returns: resulting string which is NULL if there is a problem and needs to be freed if not NULL.

References evStrReplace().

Referenced by evGenerateBaseFileName().

char* evStrRemoveSpecifiers ( const char * orig )

This routine checks a string for C-style printing integer format specifiers.

More specifically, it checks for nd and nx where n can be multiple digits. It removes all such specifiers and returns the modified string or NULL if error. Free the result if non-NULL.

Parameters

orig	string to be checked/modified

Returns: resulting string which is NULL if there is a problem and needs to be freed if not NULL.

Referenced by evGenerateFileName().

char* evStrReplace	(	char *	orig,
		const char *	replace,
		const char *	with
	)

This routine substitutes a given string for a specified substring.

Free the result if non-NULL.

Parameters

orig	string to modify
replace	substring in orig arg to replace
with	string to substitute for replace arg

Returns: resulting string which is NULL if there is a problem and needs to be freed if not NULL.

Referenced by evGenerateFileName(), evStrFindSpecifiers(), and evStrReplaceEnvVar().

char* evStrReplaceEnvVar ( const char * orig )

This routine finds constructs of the form and replaces it with the value of the ENV environmental variable if it exists or with nothing if it doesn't.

Simple enough to do without regular expressions. Free the result if non-NULL.

Parameters

orig	string to modify

Returns: resulting string which is NULL if there is a problem and needs to be freed if not NULL.

References evStrReplace().

Referenced by evGenerateBaseFileName().

void set_user_frag_select_func ( int32_t(*)(int32_t tag) f )

Data Structures

Macros

Typedefs

Functions

Macro Definition Documentation

Typedef Documentation

Function Documentation