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Diffstat (limited to 'include/llvm/System/Path.h')
| -rw-r--r-- | include/llvm/System/Path.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/llvm/System/Path.h b/include/llvm/System/Path.h index 303235d..1178d68 100644 --- a/include/llvm/System/Path.h +++ b/include/llvm/System/Path.h @@ -544,6 +544,29 @@ namespace sys { /// @brief Removes the file or directory from the filesystem. bool eraseFromDisk(bool destroy_contents = false, std::string *Err = 0) const; + + + /// MapInFilePages - This is a low level system API to map in the file + /// that is currently opened as FD into the current processes' address + /// space for read only access. This function may return null on failure + /// or if the system cannot provide the following constraints: + /// 1) The pages must be valid after the FD is closed, until + /// UnMapFilePages is called. + /// 2) Any padding after the end of the file must be zero filled, if + /// present. + /// 3) The pages must be contiguous. + /// + /// This API is not intended for general use, clients should use + /// MemoryBuffer::getFile instead. + static const char *MapInFilePages(int FD, uint64_t FileSize); + + /// UnMapFilePages - Free pages mapped into the current process by + /// MapInFilePages. + /// + /// This API is not intended for general use, clients should use + /// MemoryBuffer::getFile instead. + static void UnMapFilePages(const char *Base, uint64_t FileSize); + /// @} /// @name Data /// @{ |