Set the thread pool count to 4 for vts3 tests.
Thread priority is from
https://source.corp.google.com/android/frameworks/native/services/surfaceflinger/main_surfaceflinger.cpp;rcl=e9cdd276a89d512137f22650da0c45ee4b28bd66;l=97
Test: atest VtsHalGraphicsComposer3_TargetTest
BUG: 207005096
Change-Id: Ic37b454c4ae3990fd8cb38fcdd50747083b2528c
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp
index 7a20a53..0d71b68 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp
@@ -1950,5 +1950,41 @@
ALOGE("Failed to stop init.svc.surfaceflinger");
return -1;
}
+
+ android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
+
+ // The binder threadpool we start will inherit sched policy and priority
+ // of (this) creating thread. We want the binder thread pool to have
+ // SCHED_FIFO policy and priority 1 (lowest RT priority)
+ // Once the pool is created we reset this thread's priority back to
+ // original.
+ // This thread policy is based on what we do in the SurfaceFlinger while starting
+ // the thread pool and we need to replicate that for the VTS tests.
+ int newPriority = 0;
+ int origPolicy = sched_getscheduler(0);
+ struct sched_param origSchedParam;
+
+ int errorInPriorityModification = sched_getparam(0, &origSchedParam);
+ if (errorInPriorityModification == 0) {
+ int policy = SCHED_FIFO;
+ newPriority = sched_get_priority_min(policy);
+
+ struct sched_param param;
+ param.sched_priority = newPriority;
+
+ errorInPriorityModification = sched_setscheduler(0, policy, ¶m);
+ }
+
+ // start the thread pool
+ android::ProcessState::self()->startThreadPool();
+
+ // Reset current thread's policy and priority
+ if (errorInPriorityModification == 0) {
+ errorInPriorityModification = sched_setscheduler(0, origPolicy, &origSchedParam);
+ } else {
+ ALOGE("Failed to set VtsHalGraphicsComposer3_TargetTest binder threadpool priority to "
+ "SCHED_FIFO");
+ }
+
return RUN_ALL_TESTS();
}