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Diffstat (limited to 'src/inc/corjithost.h')
-rw-r--r-- | src/inc/corjithost.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/inc/corjithost.h b/src/inc/corjithost.h new file mode 100644 index 0000000000..8242fab2b8 --- /dev/null +++ b/src/inc/corjithost.h @@ -0,0 +1,48 @@ +// 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 __CORJITHOST_H__ +#define __CORJITHOST_H__ + +// 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. +class ICorJitHost +{ +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. + virtual void* allocateMemory(size_t size, bool usePageAllocator = false) = 0; + + // 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. + virtual void freeMemory(void* block, bool usePageAllocator = false) = 0; + + // Return an integer config value for the given key, if any exists. + virtual int getIntConfigValue( + const wchar_t* name, + int defaultValue + ) = 0; + + // Return a string config value for the given key, if any exists. + virtual const wchar_t* getStringConfigValue( + const wchar_t* name + ) = 0; + + // 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. + virtual void freeStringConfigValue( + const wchar_t* value + ) = 0; +}; + +#endif |