Reduce stack usage for overflow checks
This reduces the stack space reserved for overflow checks to 12K, split
into an 8K gap and a 4K protected region. GC needs over 8K when running
in a stack overflow situation.
Also prevents signal runaway by detecting a signal inside code that
resulted from a signal handler invokation. And adds a max signal count to
the SignalTest to prevent it running forever.
Also reduces the number of iterations for the InterfaceTest as this was
taking (almost) forever with the --trace option on run-test.
Bug: 15435566
Change-Id: Id4fd46f22d52d42a9eb431ca07948673e8fda694
diff --git a/runtime/entrypoints/entrypoint_utils.cc b/runtime/entrypoints/entrypoint_utils.cc
index 4755b9e..a0e35f8 100644
--- a/runtime/entrypoints/entrypoint_utils.cc
+++ b/runtime/entrypoints/entrypoint_utils.cc
@@ -212,6 +212,11 @@
bool explicit_overflow_check = Runtime::Current()->ExplicitStackOverflowChecks();
self->ResetDefaultStackEnd(!explicit_overflow_check); // Return to default stack size.
+
+ // And restore protection if implicit checks are on.
+ if (!explicit_overflow_check) {
+ self->ProtectStack();
+ }
}
void CheckReferenceResult(mirror::Object* o, Thread* self) {