Disable resolution stacktraces by default to improve performance

EricRabil · Aug 11, 2022 · 28b6580 · 28b6580
1 parent f57afe6
commit 28b6580
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/Sources/Pwomise/Pwomise.swift b/Sources/Pwomise/Pwomise.swift
@@ -25,6 +25,10 @@ private let dispatch_get_current_queue = dlsym(dlopen(nil, RTLD_GLOBAL), "dispat
  unsafeBitCast($0, to: dispatch_get_current_queue_t.self)
 }
 
+public struct PromiseRuntime {
+ /// Enable this when debugging double-resolve errors to locate the first resolver
+ public static var recordResolutionStackTrace = false
+}
 public class Promise<Output>: CustomDebugStringConvertible {
  internal typealias Pending = PendingPromise<Output, Error>
  public typealias Completion = Result<Output, Error>
@@ -114,7 +118,9 @@ public class Promise<Output>: CustomDebugStringConvertible {
  return
  }
 
- resolutionStackTrace = Thread.callStackSymbols
+ if PromiseRuntime.recordResolutionStackTrace {
+ resolutionStackTrace = Thread.callStackSymbols
+ }
  }
  }