shmid_ds.md

# shmid\_ds
## **Overview**
**Related Modules:**
[MEM](MEM.md)
**Description:**
Stores information about a shared memory segment.
## **Summary**
## Data Fields

Variable Name	Description
shm_perm	struct ipc_perm
shm_segsz	size_t
shm_atime	time_t
shm_dtime	time_t
shm_ctime	time_t
shm_cpid	pid_t
shm_lpid	pid_t
shm_nattch	unsigned long
__pad1	unsigned long
__pad2	unsigned long

## **Details**
## **Field Documentation**
## \_\_pad1
```
unsigned long shmid_ds::__pad1
```
**Description:**
Padding field
## \_\_pad2
```
unsigned long shmid_ds::__pad2
```
**Description:**
Padding field
## shm\_atime
```
time_t shmid_ds::shm_atime
```
**Description:**
Time when the last process is attached to this segment
## shm\_cpid
```
pid_t shmid_ds::shm_cpid
```
**Description:**
ID of the process that created this segment
## shm\_ctime
```
time_t shmid_ds::shm_ctime
```
**Description:**
Time when the last process modified this segment
## shm\_dtime
```
time_t shmid_ds::shm_dtime
```
**Description:**
Time when the last process is detached from this segment
## shm\_lpid
```
pid_t shmid_ds::shm_lpid
```
**Description:**
ID of the last process that operated this segment
## shm\_nattch
```
unsigned long shmid_ds::shm_nattch
```
**Description:**
Number of processes attached to this segment
## shm\_perm
```
struct ipc_perm shmid_ds::shm_perm
```
**Description:**
Operation permissions on this segment
## shm\_segsz
```
size_t shmid_ds::shm_segsz
```
**Description:**
Segment size, in bytes