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   BEA Tuxedo FML Function Reference

Fneeded(), Fneeded32() - compute size needed for buffer

#include <stdio.h> 
#include "fml.h" 
 
long 
Fneeded(FLDOCC F, FLDLEN V) 
 
#include "fml32.h" 
 
long 
Fneeded32(FLDOCC32 F, FLDLEN32 V)

Fneeded() is used to determine the space that must be allocated for a fielded buffer. The F argument is the number of fields, and the V argument is the space for all field values, in bytes.

Fneeded32() is used with 32-bit FML.

A thread in a multithreaded application may issue a call to Fneeded() or Fneeded32() while running in any context state, including TPINVALIDCONTEXT.

This function returns -1 on error and sets Ferror to indicate the error condition.

Under the following conditions, Fneeded() fails and sets Ferror to:

[FEINVAL]

"invalid argument to function"
One of the arguments to the function invoked was invalid (for example, number of fields is less than 0, V is 0 or total size is greater than 65534).

Introduction to FML Functions, Falloc, Falloc32(3fml), Fielded, Fielded32(3fml), Finit, Finit32(3fml), Fsizeof, Fsizeof32(3fml), Funused, Funused32(3fml), Fused, Fused32(3fml)