Initial population of CoreRT Runtime files.

1 files changed, 53 insertions, 0 deletions

diff --git a/src/Native/Runtime/GcStressControl.h b/src/Native/Runtime/GcStressControl.h
new file mode 100644
index 000000000..a24cbc31c
--- /dev/null
+++ b/src/Native/Runtime/GcStressControl.h
@@ -0,0 +1,53 @@
+//
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+#ifndef __GcStressControl_h__
+#define __GcStressControl_h__
+
+
+enum HijackType { htLoop, htCallsite };
+bool ShouldHijackForGcStress(UIntNative CallsiteIP, HijackType ht);
+
+
+enum GcStressThrottleMode {
+        gcstm_TriggerAlways     = 0x0000,   // trigger a GC every time we hit a GC safe point
+        gcstm_TriggerOnFirstHit = 0x0001,   // trigger a GC the first time a GC safe point is hit
+        gcstm_TriggerRandom     = 0x0002,   // trigger a GC randomly, as defined by GcStressFreqCallsite/GcStressFreqLoop/GcStressSeed
+};
+
+struct CallsiteCountEntry
+{
+    UIntNative callsiteIP;
+    UIntNative countHit;
+    UIntNative countForced;
+    HijackType ht;
+};
+
+typedef DPTR(CallsiteCountEntry) PTR_CallsiteCountEntry;
+
+class CallsiteCountTraits: public NoRemoveSHashTraits< DefaultSHashTraits < CallsiteCountEntry > >
+{
+public:
+    typedef UIntNative key_t;
+
+    static UIntNative GetKey(const CallsiteCountEntry & e) { return e.callsiteIP; }
+
+    static count_t Hash(UIntNative k)
+    { return (count_t) k; }
+
+    static bool Equals(UIntNative k1, UIntNative k2)
+    { return k1 == k2; }
+
+    static CallsiteCountEntry Null() 
+    { CallsiteCountEntry e; e.callsiteIP = 0; return e; }
+
+    static bool IsNull(const CallsiteCountEntry & e)
+    { return e.callsiteIP == 0; }
+};
+
+typedef SHash < CallsiteCountTraits > CallsiteCountSHash;
+typedef DPTR(CallsiteCountSHash) PTR_CallsiteCountSHash;
+
+
+#endif // __GcStressControl_h__