1 files changed, 55 insertions, 0 deletions
diff --git a/src/ToolBox/superpmi/superpmi-shared/icorjithostimpl.h b/src/ToolBox/superpmi/superpmi-shared/icorjithostimpl.h
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index 0000000000..8bd09e5331
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+++ b/src/ToolBox/superpmi/superpmi-shared/icorjithostimpl.h
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#ifndef _ICorJitHostImpl
+#define _ICorJitHostImpl
+
+// ICorJitHost
+//
+// ICorJitHost provides the interface that the JIT uses to access some functionality that
+// would normally be provided by the operating system. This is intended to allow for
+// host-specific policies re: memory allocation, configuration value access, etc. It is
+// expected that the `ICorJitHost` value provided to `jitStartup` lives at least as
+// long as the JIT itself.
+
+// ICorJitHostImpl: declare for implementation all the members of the ICorJitHost interface (which are
+// specified as pure virtual methods). This is done once, here, and all implementations share it,
+// to avoid duplicated declarations. This file is #include'd within all the ICorJitHost implementation
+// classes.
+//
+// NOTE: this file is in exactly the same order, with exactly the same whitespace, as the ICorJitHost
+// interface declaration (with the "virtual" and "= 0" syntax removed). This is to make it easy to compare
+// against the interface declaration.
+
+public:
+    // Allocate memory of the given size in bytes. All bytes of the returned block
+    // must be initialized to zero. If `usePageAllocator` is true, the implementation
+    // should use an allocator that deals in OS pages if one exists.
+    void* allocateMemory(size_t size, bool usePageAllocator = false);
+
+    // Frees memory previous obtained by a call to `ICorJitHost::allocateMemory`. The
+    // value of the `usePageAllocator` parameter must match the value that was
+    // provided to the call to used to allocate the memory.
+    void freeMemory(void* block, bool usePageAllocator = false);
+
+    // Return an integer config value for the given key, if any exists.
+    int getIntConfigValue(
+        const wchar_t* name, 
+        int defaultValue
+        );
+
+    // Return a string config value for the given key, if any exists.
+    const wchar_t* getStringConfigValue(
+        const wchar_t* name
+        );
+
+    // Free a string ConfigValue returned by the runtime.
+    // JITs using the getStringConfigValue query are required
+    // to return the string values to the runtime for deletion.
+    // This avoids leaking the memory in the JIT.
+    void freeStringConfigValue(
+        const wchar_t* value
+        );
+
+#endif