Compress GC retain/release logging

Author: mjm

Sources/Relay/GarbageCollector.swift

@@ -54,8 +54,8 @@ class GarbageCollector {
 
             #if swift(>=5.3)
             if #available(iOS 14.0, macOS 10.16, tvOS 14.0, watchOS 7.0, *) {
-                logger.debug("GC Refcount: \(self.roots[id]?.refCount ?? 0, privacy: .public) \(operation.request.node.params.name, privacy: .public)\(operation.request.variables)")
-                logger.info("GC Release: \(operation.request.node.params.name, privacy: .public)\(operation.request.variables)")
+                let previousRefCount = self.roots[id]?.refCount ?? 0
+                logger.info("GC Release: \(operation.request.node.params.name, privacy: .public)\(operation.request.variables)  [\(previousRefCount) -> \(previousRefCount - 1)]")
             }
             #endif
             os_signpost(.event, log: log, name: "release operation", signpostID: signpostID)
@@ -73,8 +73,8 @@ class GarbageCollector {
 
         #if swift(>=5.3)
         if #available(iOS 14.0, macOS 10.16, tvOS 14.0, watchOS 7.0, *) {
-            logger.debug("GC Refcount: \(self.roots[id]?.refCount ?? 0, privacy: .public) \(operation.request.node.params.name, privacy: .public)\(operation.request.variables)")
-            logger.info("GC Retain:  \(operation.request.node.params.name, privacy: .public)\(operation.request.variables)")
+            let previousRefCount = self.roots[id]?.refCount ?? 0
+            logger.info("GC Retain:  \(operation.request.node.params.name, privacy: .public)\(operation.request.variables)  [\(previousRefCount) -> \(previousRefCount + 1)]")
         }
         #endif
         os_signpost(.event, log: log, name: "retain operation", signpostID: signpostID)