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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
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