Port EnsureSufficientExecutionStack/TryEnsureSufficientExecutionStack

- Port EnsureSufficientExecutionStack to Unix by switching it to the same implementation as what we use for CoreCLR. It is piggy backing on stackbounds that the runtime keeps track of.
- Add TryEnsureSufficientExecutionStack since it was added as public method for CoreCLR (see https://github.com/dotnet/coreclr/pull/7077/)

[tfs-changeset: 1626388]

1 files changed, 13 insertions, 0 deletions

diff --git a/src/Native/Runtime/thread.inl b/src/Native/Runtime/thread.inl
index ec7cf53c8..9c33ae3f7 100644
--- a/src/Native/Runtime/thread.inl
+++ b/src/Native/Runtime/thread.inl
@@ -17,3 +17,16 @@ inline void Thread::SetupHackPInvokeTunnel()
     m_pHackPInvokeTunnel = m_pTransitionFrame;
 }
 #endif // DACCESS_COMPILE
+
+inline bool Thread::IsWithinStackBounds(PTR_VOID p)
+{
+    ASSERT((m_pStackLow != 0) && (m_pStackHigh != 0));
+    return (m_pStackLow <= p) && (p < m_pStackHigh);
+}
+
+inline void Thread::GetStackBounds(PTR_VOID * ppStackLow, PTR_VOID * ppStackHigh)
+{
+    ASSERT((m_pStackLow != 0) && (m_pStackHigh != 0));
+    *ppStackLow = m_pStackLow;
+    *ppStackHigh = m_pStackHigh;
+}