File size: 3,408 Bytes
cfb152f | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 | //! GC runtime: gulp every N emits, flow-not-pile (bigpickle gc-runtime.mjs:10-59).
/// Gulp every 2000 messages (gc-runtime.mjs:10).
pub const DEFAULT_GC_EVERY_MESSAGES: u64 = 2000;
/// File-count cap (gc-runtime.mjs:11).
pub const DEFAULT_FILE_CAP_MAX: u64 = 2000;
/// File-count warn threshold (gc-runtime.mjs:12).
pub const DEFAULT_FILE_CAP_WARN_AT: u64 = 1800;
/// Cap status for a file count (gc-runtime.mjs:52-55).
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum CapStatus {
Pass,
Warn,
Fail,
}
impl CapStatus {
/// The upstream string form (`pass` / `warn` / `fail`).
pub fn as_str(self) -> &'static str {
match self {
CapStatus::Pass => "pass",
CapStatus::Warn => "warn",
CapStatus::Fail => "fail",
}
}
}
/// A snapshot of the runtime's counters (gc-runtime.mjs:46-57 `status()`).
pub struct GcStatus {
pub total_received: u64,
pub since_last_gulp: u64,
pub runs: u64,
pub file_count: u64,
pub cap_status: CapStatus,
pub last_gulp_reason: Option<String>,
}
/// The GC runtime (gc-runtime.mjs:14-59).
pub struct GcRuntime {
pub gc_every_messages: u64,
pub file_cap_max: u64,
pub file_cap_warn_at: u64,
pub total_received: u64,
pub since_last_gulp: u64,
pub runs: u64,
pub file_count: u64,
pub last_gulp_reason: Option<String>,
}
impl Default for GcRuntime {
fn default() -> Self {
Self::new()
}
}
impl GcRuntime {
/// New runtime with the canon defaults.
pub fn new() -> Self {
Self {
gc_every_messages: DEFAULT_GC_EVERY_MESSAGES,
file_cap_max: DEFAULT_FILE_CAP_MAX,
file_cap_warn_at: DEFAULT_FILE_CAP_WARN_AT,
total_received: 0,
since_last_gulp: 0,
runs: 0,
file_count: 0,
last_gulp_reason: None,
}
}
/// New runtime with a custom gulp window.
pub fn with_gc_every(gc_every_messages: u64) -> Self {
Self {
gc_every_messages,
..Self::new()
}
}
/// Record one emit; gulp automatically at the window (gc-runtime.mjs:27-35).
pub fn emit(&mut self) -> GcStatus {
self.total_received += 1;
self.since_last_gulp += 1;
self.file_count += 1;
if self.since_last_gulp >= self.gc_every_messages {
self.gulp("auto_threshold");
}
self.status()
}
/// Drain the file count by one gulp window (gc-runtime.mjs:37-44).
pub fn gulp(&mut self, reason: &str) {
self.since_last_gulp = 0;
self.runs += 1;
self.last_gulp_reason = Some(reason.to_string());
self.file_count = self.file_count.saturating_sub(self.gc_every_messages);
}
/// Current counters and cap status (gc-runtime.mjs:46-57).
pub fn status(&self) -> GcStatus {
let cap_status = if self.file_count >= self.file_cap_max {
CapStatus::Fail
} else if self.file_count >= self.file_cap_warn_at {
CapStatus::Warn
} else {
CapStatus::Pass
};
GcStatus {
total_received: self.total_received,
since_last_gulp: self.since_last_gulp,
runs: self.runs,
file_count: self.file_count,
cap_status,
last_gulp_reason: self.last_gulp_reason.clone(),
}
}
}
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