---
name: "vrb_space_len"
section: "3"
platform: "linux"
package: "libvrb0-dev"
version: "0.5.1-5.1"
release: "Debian 7 (Wheezy)"
platforms: ["linux"]
url: "https://new.carta.tech/vrb_space_len"
---

# vrb\_space\_len(3)

return the length of space

## NAME

vrb\_space\_len - return the length of space

## LIBRARY

**-lvrb**

## SYNOPSIS

**#include \<vrb.h\>**

*size\_t* **vrb\_space\_len***(vrb\_p* **vrb***);*

## DESCRIPTION

**vrb\_space\_len** returns the total length of space available in the given virtual ring buffer. This is the maximum space the caller may store into the buffer from the pointer returned by **[vrb\_space\_ptr(3)](/vrb_space_ptr/3.md).**

## ARGUMENTS

*vrb\_p* **vrb**\
 specifies the virtual ring buffer to obtain the length of available space in. If a NULL or invalid pointer is given, results are unpredictable and are likely to be disasterous.

## RETURN VALUE

*size\_t*\
 The length of available space in the virtual ring buffer is returned.

## SEE ALSO

[**vrb**(3)](/vrb/3.md), [**vrb\_capacity**(3)](/vrb_capacity/3.md), [**vrb\_data\_len**(3)](/vrb_data_len/3.md), [**vrb\_data\_ptr**(3)](/vrb_data_ptr/3.md), [**vrb\_destroy**(3)](/vrb_destroy/3.md), [**vrb\_get**(3)](/vrb_get/3.md), [**vrb\_get\_min**(3)](/vrb_get_min/3.md), [**vrb\_give**(3)](/vrb_give/3.md), [**vrb\_init**(3)](/vrb_init/3.md), [**vrb\_init\_opt**(3)](/vrb_init_opt/3.md), [**vrb\_is\_empty**(3)](/vrb_is_empty/3.md), [**vrb\_is\_full**(3)](/vrb_is_full/3.md), [**vrb\_is\_not\_empty**(3)](/vrb_is_not_empty/3.md), [**vrb\_is\_not\_full**(3)](/vrb_is_not_full/3.md), [**vrb\_move**(3)](/vrb_move/3.md), [**vrb\_new**(3)](/vrb_new/3.md), [**vrb\_new\_opt**(3)](/vrb_new_opt/3.md), [**vrb\_put**(3)](/vrb_put/3.md), [**vrb\_put\_all**(3)](/vrb_put_all/3.md), [**vrb\_read**(3)](/vrb_read/3.md), [**vrb\_read\_min**(3)](/vrb_read_min/3.md), [**vrb\_resize**(3)](/vrb_resize/3.md), [**vrb\_space\_ptr**(3)](/vrb_space_ptr/3.md), [**vrb\_take**(3)](/vrb_take/3.md), [**vrb\_uninit**(3)](/vrb_uninit/3.md), [**vrb\_write**(3)](/vrb_write/3.md), [**vrb\_write\_min**(3)](/vrb_write_min/3.md)