px4_work_queue: stack size rounded to page size on posix

platforms/common/px4_work_queue/WorkQueueManager.cpp

@@ -203,10 +203,16 @@ WorkQueueManagerRun(int, char **)
 			}
 
 			// stack size
-#ifndef __PX4_QURT
-			const size_t stacksize = math::max(PTHREAD_STACK_MIN, PX4_STACK_ADJUSTED(wq->stacksize));
-#else
+#if defined(__PX4_QURT)
 			const size_t stacksize = math::max(8 * 1024, PX4_STACK_ADJUSTED(wq->stacksize));
+#elif defined(__PX4_NUTTX)
+			const size_t stacksize = math::max((uint16_t)PTHREAD_STACK_MIN, wq->stacksize);
+#elif defined(__PX4_POSIX)
+			// On posix system , the desired stacksize round to the nearest multiplier of the system pagesize
+			// It is a requirement of the  pthread_attr_setstacksize* function
+			const unsigned int page_size = sysconf(_SC_PAGESIZE);
+			const size_t stacksize_adj = math::max(PTHREAD_STACK_MIN, PX4_STACK_ADJUSTED(wq->stacksize));
+			const size_t stacksize = (stacksize_adj + page_size - (stacksize_adj % page_size));
 #endif
 			int ret_setstacksize = pthread_attr_setstacksize(&attr, stacksize);