1 //===-- llvm/LLVMContext.h - Class for managing "global" state --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file declares LLVMContext, a container of "global" state in LLVM, such
11 // as the global type and constant uniquing tables.
13 //===----------------------------------------------------------------------===//
15 #ifndef LLVM_LLVMCONTEXT_H
16 #define LLVM_LLVMCONTEXT_H
20 class LLVMContextImpl;
21 class MetadataContext;
23 /// This is an important class for using LLVM in a threaded context. It
24 /// (opaquely) owns and manages the core "global" data of LLVM's core
25 /// infrastructure, including the type and constant uniquing tables.
26 /// LLVMContext itself provides no locking guarantees, so you should be careful
27 /// to have one context per thread.
30 LLVMContext(LLVMContext&);
31 void operator=(LLVMContext&);
34 LLVMContextImpl* const pImpl;
35 MetadataContext &getMetadata();
40 /// FOR BACKWARDS COMPATIBILITY - Returns a global context.
41 extern LLVMContext& getGlobalContext();