---
name: "ck_hs_stat"
section: "3"
platform: "linux"
package: "libck-dev"
version: "0.7.2-6"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/ck_hs_stat"
---

# ck\_hs\_stat(3)

get hash set status

## NAME

**ck\_hs\_stat** – get hash set status

## LIBRARY

Concurrency Kit (libck, -lck)

## SYNOPSIS

**#include \<ck\_hs.h\>**

*void*\

**ck\_hs\_stat**(*ck\_hs\_t \*hs*, *struct ck\_hs\_stat \*st*);

## DESCRIPTION

The **ck\_hs\_stat**(*3*) function will store various hash set statistics in the object pointed to by *st*. The ck\_hs\_stat structure is defined as follows:

```
struct ck_hs_stat {
	unsigned long tombstones;   /* Current number of tombstones in hash set. */
	unsigned long n_entries;    /* Current number of keys in hash set. */
	unsigned int probe_maximum; /* Longest read-side probe sequence. */
};
```

## RETURN VALUES

**ck\_hs\_stat**(*3*) has no return value.

## ERRORS

Behavior is undefined if *hs* is uninitialized. Behavior is undefined if this function is called by a non-writer thread.

## SEE ALSO

[ck\_hs\_init(3)](/ck_hs_init/3.md), [ck\_hs\_move(3)](/ck_hs_move/3.md), [ck\_hs\_destroy(3)](/ck_hs_destroy/3.md), [CK\_HS\_HASH(3)](/CK_HS_HASH/3.md), [ck\_hs\_iterator\_init(3)](/ck_hs_iterator_init/3.md), [ck\_hs\_next(3)](/ck_hs_next/3.md), [ck\_hs\_get(3)](/ck_hs_get/3.md), [ck\_hs\_put(3)](/ck_hs_put/3.md), [ck\_hs\_put\_unique(3)](/ck_hs_put_unique/3.md), [ck\_hs\_set(3)](/ck_hs_set/3.md), [ck\_hs\_fas(3)](/ck_hs_fas/3.md), [ck\_hs\_remove(3)](/ck_hs_remove/3.md), [ck\_hs\_grow(3)](/ck_hs_grow/3.md), [ck\_hs\_gc(3)](/ck_hs_gc/3.md), [ck\_hs\_rebuild(3)](/ck_hs_rebuild/3.md), [ck\_hs\_count(3)](/ck_hs_count/3.md), [ck\_hs\_reset(3)](/ck_hs_reset/3.md), [ck\_hs\_reset\_size(3)](/ck_hs_reset_size/3.md)

Additional information available at http://concurrencykit.org/