:orphan:
# PetscSegBufferGetSize
get currently used size of a `PetscSegBuffer` 
## Synopsis
```
PetscErrorCode PetscSegBufferGetSize(PetscSegBuffer seg, size_t *usedsize)
```
Not Collective


## Input Parameter

- ***seg -*** `PetscSegBuffer` object



## Output Parameter

- ***usedsize -*** number of used units





## See Also
 `PetscSegBuffer`, `PetscSegBufferExtractAlloc()`, `PetscSegBufferExtractTo()`, `PetscSegBufferCreate()`, `PetscSegBufferGet()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/utils/segbuffer.c.html#PetscSegBufferGetSize">src/sys/utils/segbuffer.c</A>


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