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use std::fs::File;
use std::io::{Read, Write};
use std::path::PathBuf;
use error::*;
use error::ErrorKind::*;
use {
ControllIdentifier, ControllerInternal, Controllers, MemoryResources, Resources, Subsystem,
};
#[derive(Debug, Clone)]
pub struct MemController {
base: PathBuf,
path: PathBuf,
}
#[derive(Default, Debug, PartialEq, Eq)]
pub struct OomControl {
pub oom_kill_disable: bool,
pub under_oom: bool,
pub oom_kill: u64,
}
fn parse_oom_control(s: String) -> Result<OomControl> {
let spl = s.split_whitespace().collect::<Vec<_>>();
Ok(OomControl {
oom_kill_disable: spl[1].parse::<u64>().unwrap() == 1,
under_oom: spl[3].parse::<u64>().unwrap() == 1,
oom_kill: spl[5].parse::<u64>().unwrap(),
})
}
#[derive(Default, Debug, PartialEq, Eq)]
pub struct NumaStat {
pub total_pages: u64,
pub total_pages_per_node: Vec<u64>,
pub file_pages: u64,
pub file_pages_per_node: Vec<u64>,
pub anon_pages: u64,
pub anon_pages_per_node: Vec<u64>,
pub unevictable_pages: u64,
pub unevictable_pages_per_node: Vec<u64>,
pub hierarchical_total_pages: u64,
pub hierarchical_total_pages_per_node: Vec<u64>,
pub hierarchical_file_pages: u64,
pub hierarchical_file_pages_per_node: Vec<u64>,
pub hierarchical_anon_pages: u64,
pub hierarchical_anon_pages_per_node: Vec<u64>,
pub hierarchical_unevictable_pages: u64,
pub hierarchical_unevictable_pages_per_node: Vec<u64>,
}
fn parse_numa_stat(s: String) -> Result<NumaStat> {
let nodes = (s.split_whitespace().collect::<Vec<_>>().len() - 8) / 8;
let mut ls = s.lines();
let total_line = ls.next().unwrap();
let file_line = ls.next().unwrap();
let anon_line = ls.next().unwrap();
let unevict_line = ls.next().unwrap();
let hier_total_line = ls.next().unwrap();
let hier_file_line = ls.next().unwrap();
let hier_anon_line = ls.next().unwrap();
let hier_unevict_line = ls.next().unwrap();
Ok(NumaStat {
total_pages: total_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
total_pages_per_node: {
let spl = &total_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
file_pages: file_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
file_pages_per_node: {
let spl = &file_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
anon_pages: anon_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
anon_pages_per_node: {
let spl = &anon_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
unevictable_pages: unevict_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
unevictable_pages_per_node: {
let spl = &unevict_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
hierarchical_total_pages: hier_total_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
hierarchical_total_pages_per_node: {
let spl = &hier_total_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
hierarchical_file_pages: hier_file_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
hierarchical_file_pages_per_node: {
let spl = &hier_file_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
hierarchical_anon_pages: hier_anon_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
hierarchical_anon_pages_per_node: {
let spl = &hier_anon_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
hierarchical_unevictable_pages: hier_unevict_line
.split(|x| x == ' ' || x == '=')
.collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0),
hierarchical_unevictable_pages_per_node: {
let spl = &hier_unevict_line.split(" ").collect::<Vec<_>>()[1..];
spl.iter()
.map(|x| {
x.split("=").collect::<Vec<_>>()[1]
.parse::<u64>()
.unwrap_or(0)
}).collect()
},
})
}
#[derive(Default, Debug, PartialEq, Eq)]
pub struct MemoryStat {
pub cache: u64,
pub rss: u64,
pub rss_huge: u64,
pub shmem: u64,
pub mapped_file: u64,
pub dirty: u64,
pub writeback: u64,
pub swap: u64,
pub pgpgin: u64,
pub pgpgout: u64,
pub pgfault: u64,
pub pgmajfault: u64,
pub inactive_anon: u64,
pub active_anon: u64,
pub inactive_file: u64,
pub active_file: u64,
pub unevictable: u64,
pub hierarchical_memory_limit: u64,
pub hierarchical_memsw_limit: u64,
pub total_cache: u64,
pub total_rss: u64,
pub total_rss_huge: u64,
pub total_shmem: u64,
pub total_mapped_file: u64,
pub total_dirty: u64,
pub total_writeback: u64,
pub total_swap: u64,
pub total_pgpgin: u64,
pub total_pgpgout: u64,
pub total_pgfault: u64,
pub total_pgmajfault: u64,
pub total_inactive_anon: u64,
pub total_active_anon: u64,
pub total_inactive_file: u64,
pub total_active_file: u64,
pub total_unevictable: u64,
}
fn parse_memory_stat(s: String) -> Result<MemoryStat> {
let sp: Vec<&str> = s
.split_whitespace()
.filter(|x| x.parse::<u64>().is_ok())
.collect();
let mut spl = sp.iter();
Ok(MemoryStat {
cache: spl.next().unwrap().parse::<u64>().unwrap(),
rss: spl.next().unwrap().parse::<u64>().unwrap(),
rss_huge: spl.next().unwrap().parse::<u64>().unwrap(),
shmem: spl.next().unwrap().parse::<u64>().unwrap(),
mapped_file: spl.next().unwrap().parse::<u64>().unwrap(),
dirty: spl.next().unwrap().parse::<u64>().unwrap(),
writeback: spl.next().unwrap().parse::<u64>().unwrap(),
swap: spl.next().unwrap().parse::<u64>().unwrap(),
pgpgin: spl.next().unwrap().parse::<u64>().unwrap(),
pgpgout: spl.next().unwrap().parse::<u64>().unwrap(),
pgfault: spl.next().unwrap().parse::<u64>().unwrap(),
pgmajfault: spl.next().unwrap().parse::<u64>().unwrap(),
inactive_anon: spl.next().unwrap().parse::<u64>().unwrap(),
active_anon: spl.next().unwrap().parse::<u64>().unwrap(),
inactive_file: spl.next().unwrap().parse::<u64>().unwrap(),
active_file: spl.next().unwrap().parse::<u64>().unwrap(),
unevictable: spl.next().unwrap().parse::<u64>().unwrap(),
hierarchical_memory_limit: spl.next().unwrap().parse::<u64>().unwrap(),
hierarchical_memsw_limit: spl.next().unwrap().parse::<u64>().unwrap(),
total_cache: spl.next().unwrap().parse::<u64>().unwrap(),
total_rss: spl.next().unwrap().parse::<u64>().unwrap(),
total_rss_huge: spl.next().unwrap().parse::<u64>().unwrap(),
total_shmem: spl.next().unwrap().parse::<u64>().unwrap(),
total_mapped_file: spl.next().unwrap().parse::<u64>().unwrap(),
total_dirty: spl.next().unwrap().parse::<u64>().unwrap(),
total_writeback: spl.next().unwrap().parse::<u64>().unwrap(),
total_swap: spl.next().unwrap().parse::<u64>().unwrap(),
total_pgpgin: spl.next().unwrap().parse::<u64>().unwrap(),
total_pgpgout: spl.next().unwrap().parse::<u64>().unwrap(),
total_pgfault: spl.next().unwrap().parse::<u64>().unwrap(),
total_pgmajfault: spl.next().unwrap().parse::<u64>().unwrap(),
total_inactive_anon: spl.next().unwrap().parse::<u64>().unwrap(),
total_active_anon: spl.next().unwrap().parse::<u64>().unwrap(),
total_inactive_file: spl.next().unwrap().parse::<u64>().unwrap(),
total_active_file: spl.next().unwrap().parse::<u64>().unwrap(),
total_unevictable: spl.next().unwrap().parse::<u64>().unwrap(),
})
}
#[derive(Debug)]
pub struct MemSwap {
pub fail_cnt: u64,
pub limit_in_bytes: u64,
pub usage_in_bytes: u64,
pub max_usage_in_bytes: u64,
}
#[derive(Debug)]
pub struct Memory {
pub fail_cnt: u64,
pub limit_in_bytes: u64,
pub usage_in_bytes: u64,
pub max_usage_in_bytes: u64,
pub move_charge_at_immigrate: u64,
pub numa_stat: NumaStat,
pub oom_control: OomControl,
pub soft_limit_in_bytes: u64,
pub stat: MemoryStat,
pub swappiness: u64,
pub use_hierarchy: u64,
}
#[derive(Debug)]
pub struct Tcp {
pub fail_cnt: u64,
pub limit_in_bytes: u64,
pub usage_in_bytes: u64,
pub max_usage_in_bytes: u64,
}
#[derive(Debug)]
pub struct Kmem {
pub fail_cnt: u64,
pub limit_in_bytes: u64,
pub usage_in_bytes: u64,
pub max_usage_in_bytes: u64,
pub slabinfo: String,
}
impl ControllerInternal for MemController {
fn control_type(&self) -> Controllers {
Controllers::Mem
}
fn get_path(&self) -> &PathBuf {
&self.path
}
fn get_path_mut(&mut self) -> &mut PathBuf {
&mut self.path
}
fn get_base(&self) -> &PathBuf {
&self.base
}
fn apply(&self, res: &Resources) -> Result<()> {
let memres: &MemoryResources = &res.memory;
if memres.update_values {
let _ = self.set_limit(memres.memory_hard_limit);
let _ = self.set_soft_limit(memres.memory_soft_limit);
let _ = self.set_kmem_limit(memres.kernel_memory_limit);
let _ = self.set_memswap_limit(memres.memory_swap_limit);
let _ = self.set_tcp_limit(memres.kernel_tcp_memory_limit);
let _ = self.set_swappiness(memres.swappiness);
}
Ok(())
}
}
impl MemController {
pub fn new(oroot: PathBuf) -> Self {
let mut root = oroot;
root.push(Self::controller_type().to_string());
Self {
base: root.clone(),
path: root,
}
}
pub fn memory_stat(&self) -> Memory {
Memory {
fail_cnt: self
.open_path("memory.failcnt", false)
.and_then(read_u64_from)
.unwrap_or(0),
limit_in_bytes: self
.open_path("memory.limit_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
usage_in_bytes: self
.open_path("memory.usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
max_usage_in_bytes: self
.open_path("memory.max_usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
move_charge_at_immigrate: self
.open_path("memory.move_charge_at_immigrate", false)
.and_then(read_u64_from)
.unwrap_or(0),
numa_stat: self
.open_path("memory.numa_stat", false)
.and_then(read_string_from)
.and_then(parse_numa_stat)
.unwrap_or(NumaStat::default()),
oom_control: self
.open_path("memory.oom_control", false)
.and_then(read_string_from)
.and_then(parse_oom_control)
.unwrap_or(OomControl::default()),
soft_limit_in_bytes: self
.open_path("memory.soft_limit_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
stat: self
.open_path("memory.stat", false)
.and_then(read_string_from)
.and_then(parse_memory_stat)
.unwrap_or(MemoryStat::default()),
swappiness: self
.open_path("memory.swappiness", false)
.and_then(read_u64_from)
.unwrap_or(0),
use_hierarchy: self
.open_path("memory.use_hierarchy", false)
.and_then(read_u64_from)
.unwrap_or(0),
}
}
pub fn kmem_stat(&self) -> Kmem {
Kmem {
fail_cnt: self
.open_path("memory.kmem.failcnt", false)
.and_then(read_u64_from)
.unwrap_or(0),
limit_in_bytes: self
.open_path("memory.kmem.limit_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
usage_in_bytes: self
.open_path("memory.kmem.usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
max_usage_in_bytes: self
.open_path("memory.kmem.max_usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
slabinfo: self
.open_path("memory.kmem.slabinfo", false)
.and_then(read_string_from)
.unwrap_or("".to_string()),
}
}
pub fn kmem_tcp_stat(&self) -> Tcp {
Tcp {
fail_cnt: self
.open_path("memory.kmem.tcp.failcnt", false)
.and_then(read_u64_from)
.unwrap_or(0),
limit_in_bytes: self
.open_path("memory.kmem.tcp.limit_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
usage_in_bytes: self
.open_path("memory.kmem.tcp.usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
max_usage_in_bytes: self
.open_path("memory.kmem.tcp.max_usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
}
}
pub fn memswap(&self) -> MemSwap {
MemSwap {
fail_cnt: self
.open_path("memory.memsw.failcnt", false)
.and_then(read_u64_from)
.unwrap_or(0),
limit_in_bytes: self
.open_path("memory.memsw.limit_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
usage_in_bytes: self
.open_path("memory.memsw.usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
max_usage_in_bytes: self
.open_path("memory.memsw.max_usage_in_bytes", false)
.and_then(read_u64_from)
.unwrap_or(0),
}
}
pub fn reset_fail_count(&self) -> Result<()> {
self.open_path("memory.failcnt", true)
.and_then(|mut file| {
file.write_all("0".to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn reset_kmem_fail_count(&self) -> Result<()> {
self.open_path("memory.kmem.failcnt", true)
.and_then(|mut file| {
file.write_all("0".to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn reset_tcp_fail_count(&self) -> Result<()> {
self.open_path("memory.kmem.tcp.failcnt", true)
.and_then(|mut file| {
file.write_all("0".to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn reset_memswap_fail_count(&self) -> Result<()> {
self.open_path("memory.memsw.failcnt", true)
.and_then(|mut file| {
file.write_all("0".to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn set_limit(&self, limit: u64) -> Result<()> {
self.open_path("memory.limit_in_bytes", true)
.and_then(|mut file| {
file.write_all(limit.to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn set_kmem_limit(&self, limit: u64) -> Result<()> {
self.open_path("memory.kmem.limit_in_bytes", true)
.and_then(|mut file| {
file.write_all(limit.to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn set_memswap_limit(&self, limit: u64) -> Result<()> {
self.open_path("memory.memsw.limit_in_bytes", true)
.and_then(|mut file| {
file.write_all(limit.to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn set_tcp_limit(&self, limit: u64) -> Result<()> {
self.open_path("memory.kmem.tcp.limit_in_bytes", true)
.and_then(|mut file| {
file.write_all(limit.to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn set_soft_limit(&self, limit: u64) -> Result<()> {
self.open_path("memory.soft_limit_in_bytes", true)
.and_then(|mut file| {
file.write_all(limit.to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
pub fn set_swappiness(&self, swp: u64) -> Result<()> {
self.open_path("memory.swappiness", true)
.and_then(|mut file| {
file.write_all(swp.to_string().as_ref())
.map_err(|e| Error::with_cause(WriteFailed, e))
})
}
}
impl ControllIdentifier for MemController {
fn controller_type() -> Controllers {
Controllers::Mem
}
}
impl<'a> From<&'a Subsystem> for &'a MemController {
fn from(sub: &'a Subsystem) -> &'a MemController {
unsafe {
match sub {
Subsystem::Mem(c) => c,
_ => {
assert_eq!(1, 0);
::std::mem::uninitialized()
}
}
}
}
}
fn read_u64_from(mut file: File) -> Result<u64> {
let mut string = String::new();
match file.read_to_string(&mut string) {
Ok(_) => string.trim().parse().map_err(|e| Error::with_cause(ParseError, e)),
Err(e) => Err(Error::with_cause(ReadFailed, e)),
}
}
fn read_string_from(mut file: File) -> Result<String> {
let mut string = String::new();
match file.read_to_string(&mut string) {
Ok(_) => Ok(string.trim().to_string()),
Err(e) => Err(Error::with_cause(ReadFailed, e)),
}
}
#[cfg(test)]
mod tests {
use memory::{
parse_memory_stat, parse_numa_stat, parse_oom_control, MemoryStat, NumaStat, OomControl,
};
static GOOD_VALUE: &str = "\
total=51189 N0=51189 N1=123
file=50175 N0=50175 N1=123
anon=1014 N0=1014 N1=123
unevictable=0 N0=0 N1=123
hierarchical_total=1628573 N0=1628573 N1=123
hierarchical_file=858151 N0=858151 N1=123
hierarchical_anon=770402 N0=770402 N1=123
hierarchical_unevictable=20 N0=20 N1=123
";
static GOOD_OOMCONTROL_VAL: &str = "\
oom_kill_disable 0
under_oom 1
oom_kill 1337
";
static GOOD_MEMORYSTAT_VAL: &str = "\
cache 178880512
rss 4206592
rss_huge 0
shmem 106496
mapped_file 7491584
dirty 114688
writeback 49152
swap 0
pgpgin 213928
pgpgout 169220
pgfault 87064
pgmajfault 202
inactive_anon 0
active_anon 4153344
inactive_file 84779008
active_file 94273536
unevictable 0
hierarchical_memory_limit 9223372036854771712
hierarchical_memsw_limit 9223372036854771712
total_cache 4200333312
total_rss 2927677440
total_rss_huge 0
total_shmem 590061568
total_mapped_file 1086164992
total_dirty 1769472
total_writeback 602112
total_swap 0
total_pgpgin 5267326291
total_pgpgout 5265586647
total_pgfault 9947902469
total_pgmajfault 25132
total_inactive_anon 585981952
total_active_anon 2928996352
total_inactive_file 1272135680
total_active_file 2338816000
total_unevictable 81920
";
#[test]
fn test_parse_numa_stat() {
let ok = parse_numa_stat(GOOD_VALUE.to_string()).unwrap();
assert_eq!(
ok,
NumaStat {
total_pages: 51189,
total_pages_per_node: vec![51189, 123],
file_pages: 50175,
file_pages_per_node: vec![50175, 123],
anon_pages: 1014,
anon_pages_per_node: vec![1014, 123],
unevictable_pages: 0,
unevictable_pages_per_node: vec![0, 123],
hierarchical_total_pages: 1628573,
hierarchical_total_pages_per_node: vec![1628573, 123],
hierarchical_file_pages: 858151,
hierarchical_file_pages_per_node: vec![858151, 123],
hierarchical_anon_pages: 770402,
hierarchical_anon_pages_per_node: vec![770402, 123],
hierarchical_unevictable_pages: 20,
hierarchical_unevictable_pages_per_node: vec![20, 123],
}
);
}
#[test]
fn test_parse_oom_control() {
let ok = parse_oom_control(GOOD_OOMCONTROL_VAL.to_string()).unwrap();
assert_eq!(
ok,
OomControl {
oom_kill_disable: false,
under_oom: true,
oom_kill: 1337,
}
);
}
#[test]
fn test_parse_memory_stat() {
let ok = parse_memory_stat(GOOD_MEMORYSTAT_VAL.to_string()).unwrap();
assert_eq!(
ok,
MemoryStat {
cache: 178880512,
rss: 4206592,
rss_huge: 0,
shmem: 106496,
mapped_file: 7491584,
dirty: 114688,
writeback: 49152,
swap: 0,
pgpgin: 213928,
pgpgout: 169220,
pgfault: 87064,
pgmajfault: 202,
inactive_anon: 0,
active_anon: 4153344,
inactive_file: 84779008,
active_file: 94273536,
unevictable: 0,
hierarchical_memory_limit: 9223372036854771712,
hierarchical_memsw_limit: 9223372036854771712,
total_cache: 4200333312,
total_rss: 2927677440,
total_rss_huge: 0,
total_shmem: 590061568,
total_mapped_file: 1086164992,
total_dirty: 1769472,
total_writeback: 602112,
total_swap: 0,
total_pgpgin: 5267326291,
total_pgpgout: 5265586647,
total_pgfault: 9947902469,
total_pgmajfault: 25132,
total_inactive_anon: 585981952,
total_active_anon: 2928996352,
total_inactive_file: 1272135680,
total_active_file: 2338816000,
total_unevictable: 81920,
}
);
}
}