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feat: add memory usage module (#403)

Adds a module to display system memory and swap usage.
This commit is contained in:
Andrew Houts 2019-09-28 22:55:49 -07:00 committed by Kevin Song
parent 63a45d01f9
commit 0eafb2bde7
7 changed files with 151 additions and 0 deletions

27
Cargo.lock generated
View File

@ -108,6 +108,11 @@ dependencies = [
"constant_time_eq 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "byte-unit"
version = "3.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "c2-chacha"
version = "0.2.2"
@ -242,6 +247,11 @@ dependencies = [
"winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "doc-comment"
version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "either"
version = "1.5.2"
@ -727,6 +737,7 @@ version = "0.19.0"
dependencies = [
"ansi_term 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
"battery 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
"byte-unit 3.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
"chrono 0.4.9 (registry+https://github.com/rust-lang/crates.io-index)",
"clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
"dirs 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
@ -738,6 +749,7 @@ dependencies = [
"pretty_env_logger 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
"rayon 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
"sysinfo 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
"tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
"toml 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
"unicode-segmentation 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@ -769,6 +781,18 @@ dependencies = [
"unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "sysinfo"
version = "0.9.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
"doc-comment 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
"rayon 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
"winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "tempfile"
version = "3.1.0"
@ -959,6 +983,7 @@ dependencies = [
"checksum battery 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6d6fe5630049e900227cd89afce4c1204b88ec8e61a2581bb96fcce26f047b"
"checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
"checksum blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6d530bdd2d52966a6d03b7a964add7ae1a288d25214066fd4b600f0f796400"
"checksum byte-unit 3.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6894a79550807490d9f19a138a6da0f8830e70c83e83402dd23f16fd6c479056"
"checksum c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7d64d04786e0f528460fc884753cf8dddcc466be308f6026f8e355c41a0e4101"
"checksum cc 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)" = "4fc9a35e1f4290eb9e5fc54ba6cf40671ed2a2514c3eeb2b2a908dda2ea5a1be"
"checksum cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "11d43355396e872eefb45ce6342e4374ed7bc2b3a502d1b28e36d6e23c05d1f4"
@ -974,6 +999,7 @@ dependencies = [
"checksum crossbeam-utils 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "f8306fcef4a7b563b76b7dd949ca48f52bc1141aa067d2ea09565f3e2652aa5c"
"checksum dirs 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
"checksum dirs-sys 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "afa0b23de8fd801745c471deffa6e12d248f962c9fd4b4c33787b055599bde7b"
"checksum doc-comment 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "923dea538cea0aa3025e8685b20d6ee21ef99c4f77e954a30febbaac5ec73a97"
"checksum either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5527cfe0d098f36e3f8839852688e63c8fff1c90b2b405aef730615f9a7bcf7b"
"checksum env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "aafcde04e90a5226a6443b7aabdb016ba2f8307c847d524724bd9b346dd1a2d3"
"checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
@ -1040,6 +1066,7 @@ dependencies = [
"checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
"checksum syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)" = "a1393e4a97a19c01e900df2aec855a29f71cf02c402e2f443b8d2747c25c5dbe"
"checksum synstructure 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)" = "73687139bf99285483c96ac0add482c3776528beac1d97d444f6e91f203a2015"
"checksum sysinfo 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d5bd3b813d94552a8033c650691645f8dd5a63d614dddd62428a95d3931ef7b6"
"checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
"checksum termcolor 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "4096add70612622289f2fdcdbd5086dc81c1e2675e6ae58d6c4f62a16c6d7f2f"
"checksum termion 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dde0593aeb8d47accea5392b39350015b5eccb12c0d98044d856983d89548dea"

View File

@ -42,6 +42,8 @@ unicode-segmentation = "1.3.0"
gethostname = "0.2.0"
once_cell = "1.2.0"
chrono = "0.4"
sysinfo = "0.9.5"
byte-unit = "3.0.3"
[dev-dependencies]
tempfile = "3.1.0"

View File

@ -97,6 +97,7 @@ prompt_order = [
"golang",
"java",
"nix_shell",
"memory_usage",
"aws",
"env_var",
"cmd_duration",
@ -571,6 +572,36 @@ impure_msg = "impure shell"
pure_msg = "pure shell"
```
## Memory Usage
The `memory_usage` module shows current system memory and swap usage.
By default the swap usage is displayed if the total system swap is non-zero.
### Options
| Variable | Default | Description |
| ----------------- | ------------------------ | ------------------------------------------------------------- |
| `show_percentage` | `false` | Display memory usage as a percentage of the available memory. |
| `show_swap` | when total swap non-zero | Display swap usage. |
| `threshold` | `75` | Hide the memory usage unless it exceeds this percentage. |
| `symbol` | `"🐏 "` | The symbol used before displaying the memory usage. |
| `style` | `"bold dimmed white"` | The style for the module. |
| `disabled` | `false` | Disables the `memory_usage` module. |
### Example
```toml
# ~/.config/starship.toml
[memory_usage]
show_percentage = true
show_swap = true
threshold = -1
icon = " "
style = "bold dimmed green"
```
## Java
The `java` module shows the currently installed version of Java.

View File

@ -21,6 +21,7 @@ pub const ALL_MODULES: &[&str] = &[
"java",
"jobs",
"line_break",
"memory_usage",
"nix_shell",
"nodejs",
"package",

View File

@ -0,0 +1,87 @@
use ansi_term::Color;
use super::{Context, Module};
use byte_unit::{Byte, ByteUnit};
use sysinfo::{RefreshKind, SystemExt};
/// Creates a module with system memory usage information
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
const DEFAULT_THRESHOLD: i64 = 75;
const DEFAULT_SHOW_PERCENTAGE: bool = false;
const RAM_CHAR: &str = "🐏 ";
let mut module = context.new_module("memory_usage");
let module_style = module
.config_value_style("style")
.unwrap_or_else(|| Color::White.bold().dimmed());
let system = sysinfo::System::new_with_specifics(RefreshKind::new().with_system());
let used_memory_kib = system.get_used_memory();
let total_memory_kib = system.get_total_memory();
let used_swap_kib = system.get_used_swap();
let total_swap_kib = system.get_total_swap();
let percent_mem_used = (used_memory_kib as f64 / total_memory_kib as f64) * 100.;
let percent_swap_used = (used_swap_kib as f64 / total_swap_kib as f64) * 100.;
let threshold = module
.config_value_i64("threshold")
.unwrap_or(DEFAULT_THRESHOLD);
if percent_mem_used.round() < threshold as f64 {
return None;
}
let show_percentage = module
.config_value_bool("show_percentage")
.unwrap_or(DEFAULT_SHOW_PERCENTAGE);
let (display_mem, display_swap) = if show_percentage {
(
format!("{:.0}%", percent_mem_used),
format!("{:.0}%", percent_swap_used),
)
} else {
fn format_kib(n_kib: u64) -> String {
let byte = Byte::from_unit(n_kib as f64, ByteUnit::KiB)
.unwrap_or_else(|_| Byte::from_bytes(0));
let mut display_bytes = byte.get_appropriate_unit(true).format(0);
display_bytes.retain(|c| c != ' ');
display_bytes
}
(
format!(
"{}/{}",
format_kib(used_memory_kib),
format_kib(total_memory_kib)
),
format!(
"{}/{}",
format_kib(used_swap_kib),
format_kib(total_swap_kib)
),
)
};
let show_swap = module
.config_value_bool("show_swap")
.unwrap_or(total_swap_kib != 0);
module.new_segment("symbol", RAM_CHAR);
module.set_style(module_style);
if show_swap {
module.new_segment(
"memory_usage",
&format!("{} | {}", display_mem, display_swap),
);
} else {
module.new_segment("memory_usage", &display_mem);
}
module.get_prefix().set_value("");
Some(module)
}

View File

@ -12,6 +12,7 @@ mod hostname;
mod java;
mod jobs;
mod line_break;
mod memory_usage;
mod nix_shell;
mod nodejs;
mod package;
@ -52,6 +53,7 @@ pub fn handle<'a>(module: &str, context: &'a Context) -> Option<Module<'a>> {
"nix_shell" => nix_shell::module(context),
"hostname" => hostname::module(context),
"time" => time::module(context),
"memory_usage" => memory_usage::module(context),
_ => {
eprintln!("Error: Unknown module {}. Use starship module --list to list out all supported modules.", module);

View File

@ -26,6 +26,7 @@ const DEFAULT_PROMPT_ORDER: &[&str] = &[
"golang",
"java",
"nix_shell",
"memory_usage",
"aws",
"env_var",
"cmd_duration",