Merge branch 'configure-sleep-sem-threhold' into 'master'

make sleep semaphore threshold configurable

See merge request i4/manycore/emper!378

emper/sleep_strategy/SemaphoreWorkerSleepStrategy.hpp

@@ -160,7 +160,12 @@ class AbstractSemaphoreWorkerSleepStrategy
 		 * reviewed and potentially changed to '-1'.
 		 * skipWakeupThreshold = 0;
 		 */
-		const typename Sem::CounterType skipWakeupThreshold = workerCount;
+		typename Sem::CounterType skipWakeupThreshold;
+		if constexpr (callerEnvironment == CallerEnvironment::ANYWHERE) {
+			skipWakeupThreshold = workerCount;
+		} else {
+			skipWakeupThreshold = EMPER_SLEEP_SEM_THRESHOLD;
+		}
 
 		auto semValue = wakeupSem.getValue();
 		return semValue <= skipWakeupThreshold;

meson.build

@@ -89,6 +89,7 @@ else
 endif
 
 
+conf_data.set('EMPER_SLEEP_SEM_THRESHOLD', get_option('sleep_sem_threshold'))
 conf_data.set('EMPER_WORKER_SLEEP', get_option('worker_sleep'))
 conf_data.set('EMPER_WORKER_WAKEUP_STRATEGY', get_option('worker_wakeup_strategy'))
 conf_data.set('EMPER_WORKER_IGNORE_WAKEUP_HINT', get_option('worker_ignore_wakeup_hint'))

meson_options.txt

+option(
+  'sleep_sem_threshold',
+  type: 'combo',
+  choices: ['0', 'workerCount'],
+  value: 'workerCount',
+  description: 'Threshold skipping the notification'
+)
 option(
   'use_bundled_deps',
   type: 'combo',