[Darwin] Subscription pool logging should note associated device (#36787)

Author: jtung-apple

src/darwin/Framework/CHIP/MTRDevice_Concrete.mm

@@ -814,6 +814,7 @@ - (void)_ensureSubscriptionForExistingDelegates:(NSString *)reason
         if ([self _deviceUsesThread]) {
             MTR_LOG(" => %@ - device is a thread device, scheduling in pool", self);
             mtr_weakify(self);
+            NSString * description = [NSString stringWithFormat:@"MTRDevice setDelegate first subscription / controller resume (%p)", self];
             [self _scheduleSubscriptionPoolWork:^{
                 mtr_strongify(self);
                 VerifyOrReturn(self);
@@ -827,7 +828,7 @@ - (void)_ensureSubscriptionForExistingDelegates:(NSString *)reason
                     std::lock_guard lock(self->_lock);
                     [self _clearSubscriptionPoolWork];
                 }];
-            } inNanoseconds:0 description:@"MTRDevice setDelegate first subscription"];
+            } inNanoseconds:0 description:description];
         } else {
             [_deviceController asyncDispatchToMatterQueue:^{
                 std::lock_guard lock(self->_lock);
@@ -1350,7 +1351,8 @@ - (void)_handleResubscriptionNeededWithDelayOnDeviceQueue:(NSNumber *)resubscrip
     if (deviceUsesThread) {
         std::lock_guard lock(_lock);
         // For Thread-enabled devices, schedule the _triggerResubscribeWithReason call to run in the subscription pool
-        [self _scheduleSubscriptionPoolWork:resubscriptionBlock inNanoseconds:resubscriptionDelayNs description:@"ReadClient resubscription"];
+        NSString * description = [NSString stringWithFormat:@"ReadClient resubscription (%p)", self];
+        [self _scheduleSubscriptionPoolWork:resubscriptionBlock inNanoseconds:resubscriptionDelayNs description:description];
     } else {
         // For non-Thread-enabled devices, just call the resubscription block after the specified time
         dispatch_after(dispatch_time(DISPATCH_TIME_NOW, resubscriptionDelayNs), self.queue, resubscriptionBlock);
@@ -1467,7 +1469,8 @@ - (void)_doHandleSubscriptionReset:(NSNumber * _Nullable)retryDelay
     int64_t resubscriptionDelayNs = static_cast<int64_t>(secondsToWait * NSEC_PER_SEC);
     if ([self _deviceUsesThread]) {
         // For Thread-enabled devices, schedule the _reattemptSubscriptionNowIfNeededWithReason call to run in the subscription pool
-        [self _scheduleSubscriptionPoolWork:resubscriptionBlock inNanoseconds:resubscriptionDelayNs description:@"MTRDevice resubscription"];
+        NSString * description = [NSString stringWithFormat:@"MTRDevice resubscription (%p)", self];
+        [self _scheduleSubscriptionPoolWork:resubscriptionBlock inNanoseconds:resubscriptionDelayNs description:description];
     } else {
         // For non-Thread-enabled devices, just call the resubscription block after the specified time
         dispatch_after(dispatch_time(DISPATCH_TIME_NOW, resubscriptionDelayNs), self.queue, resubscriptionBlock);