diff options
Diffstat (limited to 'llvm/include/llvm/System/Memory.h')
| -rw-r--r-- | llvm/include/llvm/System/Memory.h | 55 |
1 files changed, 29 insertions, 26 deletions
diff --git a/llvm/include/llvm/System/Memory.h b/llvm/include/llvm/System/Memory.h index 52e1f3f14b7..014633c8c55 100644 --- a/llvm/include/llvm/System/Memory.h +++ b/llvm/include/llvm/System/Memory.h @@ -39,33 +39,36 @@ namespace sys { /// @since 1.4 /// @brief An abstraction for memory operations. class Memory { - /// @name Functions - /// @{ - public: - /// This method allocates a block of Read/Write/Execute memory that is - /// suitable for executing dynamically generated code (e.g. JIT). An - /// attempt to allocate \p NumBytes bytes of virtual memory is made. - /// \p NearBlock may point to an existing allocation in which case - /// an attempt is made to allocate more memory near the existing block. - /// - /// On success, this returns a non-null memory block, otherwise it returns - /// a null memory block and fills in *ErrMsg. - /// - /// @brief Allocate Read/Write/Execute memory. - static MemoryBlock AllocateRWX(unsigned NumBytes, - const MemoryBlock *NearBlock, - std::string *ErrMsg = 0); + public: + /// This method allocates a block of Read/Write/Execute memory that is + /// suitable for executing dynamically generated code (e.g. JIT). An + /// attempt to allocate \p NumBytes bytes of virtual memory is made. + /// \p NearBlock may point to an existing allocation in which case + /// an attempt is made to allocate more memory near the existing block. + /// + /// On success, this returns a non-null memory block, otherwise it returns + /// a null memory block and fills in *ErrMsg. + /// + /// @brief Allocate Read/Write/Execute memory. + static MemoryBlock AllocateRWX(unsigned NumBytes, + const MemoryBlock *NearBlock, + std::string *ErrMsg = 0); - /// This method releases a block of Read/Write/Execute memory that was - /// allocated with the AllocateRWX method. It should not be used to - /// release any memory block allocated any other way. - /// - /// On success, this returns false, otherwise it returns true and fills - /// in *ErrMsg. - /// @throws std::string if an error occurred. - /// @brief Release Read/Write/Execute memory. - static bool ReleaseRWX(MemoryBlock &block, std::string *ErrMsg = 0); - /// @} + /// This method releases a block of Read/Write/Execute memory that was + /// allocated with the AllocateRWX method. It should not be used to + /// release any memory block allocated any other way. + /// + /// On success, this returns false, otherwise it returns true and fills + /// in *ErrMsg. + /// @throws std::string if an error occurred. + /// @brief Release Read/Write/Execute memory. + static bool ReleaseRWX(MemoryBlock &block, std::string *ErrMsg = 0); + + + /// InvalidateInstructionCache - Before the JIT can run a block of code + /// that has been emitted it must invalidate the instruction cache on some + /// platforms. + static void InvalidateInstructionCache(const void *Addr, size_t Len); }; } } |
