Add support for pinning EventLoops
This can be used to help tune realtime performance.
Change-Id: I88031fe65d298b769742bb638a716d29fc965ffd
diff --git a/aos/events/shm_event_loop.cc b/aos/events/shm_event_loop.cc
index b2ccca6..ce34ad1 100644
--- a/aos/events/shm_event_loop.cc
+++ b/aos/events/shm_event_loop.cc
@@ -811,6 +811,10 @@
}
aos::SetCurrentThreadName(name_.substr(0, 16));
+ const cpu_set_t default_affinity = DefaultAffinity();
+ if (!CPU_EQUAL(&affinity_, &default_affinity)) {
+ ::aos::SetCurrentThreadAffinity(affinity_);
+ }
// Now, all the callbacks are setup. Lock everything into memory and go RT.
if (priority_ != 0) {
::aos::InitRT();
@@ -880,6 +884,13 @@
priority_ = priority;
}
+void ShmEventLoop::SetRuntimeAffinity(const cpu_set_t &cpuset) {
+ if (is_running()) {
+ LOG(FATAL) << "Cannot set affinity while running.";
+ }
+ affinity_ = cpuset;
+}
+
void ShmEventLoop::set_name(const std::string_view name) {
name_ = std::string(name);
UpdateTimingReport();