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locks: add process-wide lock hold time tracking

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TrackedMutex and TrackedRwLock wrappers that record hold durations
by source location using #[track_caller]. Stats written to
~/.consciousness/lock-stats.json every second, sorted by max hold time.

Re-exported as crate::Mutex so all locks are instrumented. To disable,
swap the re-export back to tokio::sync::Mutex.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>
This commit is contained in:
Kent Overstreet 2026-04-12 20:27:42 -04:00
parent b94e056372
commit f56fc3a7c7
9 changed files with 286 additions and 17 deletions
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12
src/agent/mod.rs
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@ -141,8 +141,8 @@ pub struct Agent {
pub app_config: crate::config::AppConfig,
pub prompt_file: String,
pub session_id: String,
pub context: tokio::sync::Mutex<ContextState>,
pub state: tokio::sync::Mutex<AgentState>,
pub context: crate::Mutex<ContextState>,
pub state: crate::Mutex<AgentState>,
}
/// Mutable agent state — behind its own mutex.
@ -218,8 +218,8 @@ impl Agent {
app_config,
prompt_file,
session_id,
context: tokio::sync::Mutex::new(context),
state: tokio::sync::Mutex::new(AgentState {
context: crate::Mutex::new(context),
state: crate::Mutex::new(AgentState {
tools: agent_tools,
mcp_tools: McpToolAccess::All,
last_prompt_tokens: 0,
@ -255,8 +255,8 @@ impl Agent {
app_config: self.app_config.clone(),
prompt_file: self.prompt_file.clone(),
session_id: self.session_id.clone(),
context: tokio::sync::Mutex::new(ctx),
state: tokio::sync::Mutex::new(AgentState {
context: crate::Mutex::new(ctx),
state: crate::Mutex::new(AgentState {
tools,
mcp_tools: McpToolAccess::None,
last_prompt_tokens: 0,