Tizen Native API  10.0
Public Attributes
process_memory_info_s Struct Reference
Runtime information

Public Attributes

int vsz
int rss
int pss
int shared_clean
int shared_dirty
int private_clean
int private_dirty

Detailed Description

Structure for memory information per process.

Since :
2.4

This structure provides detailed memory usage information for specific processes. The information is collected from /proc/[pid]/stat and /proc/[pid]/smaps files. All values are reported in kibibytes (KiB).

Memory metrics:

  • vsz (Virtual Memory Size): Total virtual memory used by process, collected from /proc/[pid]/stat field 23 (virtual memory size in bytes) and converted to KiB
  • rss (Resident Set Size): Non-swapped physical memory used by process, collected from /proc/[pid]/smaps RSS sum
  • pss (Proportional Set Size): RSS adjusted for shared pages (each shared page's size is divided by the number of processes sharing it), collected from /proc/[pid]/smaps PSS sum
  • shared_clean: Memory mapped to files that hasn't been modified and shared with other processes (e.g., shared libraries), collected from /proc/[pid]/smaps Shared_Clean sum
  • shared_dirty: Memory mapped to files that has been modified and shared with other processes, collected from /proc/[pid]/smaps Shared_Dirty sum
  • private_clean: Process-private memory mapped to files that hasn't been modified, collected from /proc/[pid]/smaps Private_Clean sum
  • private_dirty: Process-private anonymous memory that has been modified (heap, stack, dynamically allocated memory), collected from /proc/[pid]/smaps Private_Dirty sum

Member Data Documentation

int process_memory_info_s::private_clean

Not modified and available only to that process (KiB)

int process_memory_info_s::private_dirty

Modified and available only to that process (KiB)

int process_memory_info_s::pss

Proportional set size (KiB)

int process_memory_info_s::rss

Resident set size (KiB)

int process_memory_info_s::shared_clean

Not modified and mapped by other processes (KiB)

int process_memory_info_s::shared_dirty

Modified and mapped by other processes (KiB)

int process_memory_info_s::vsz

Virtual memory size (KiB)