Zonr Chang | d670be7 | 2012-04-05 15:09:28 +0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2012, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef BCC_EXECUTION_ENGINE_OUTPUT_FILE_H |
| 18 | #define BCC_EXECUTION_ENGINE_OUTPUT_FILE_H |
| 19 | |
| 20 | #include "File.h" |
| 21 | #include "FileBase.h" |
| 22 | |
| 23 | namespace llvm { |
| 24 | class raw_fd_ostream; |
| 25 | } |
| 26 | |
| 27 | namespace bcc { |
| 28 | |
| 29 | class OutputFile : public File<FileBase::kWriteMode> { |
| 30 | typedef File<FileBase::kWriteMode> super; |
| 31 | public: |
| 32 | // Generate a unique temporary filename from pFileTemplate and open it in |
| 33 | // an OutputFile returned. The filename will be pFileTemplate with |
| 34 | // a dot ('.') plus six random characters appended. Return NULL on error. |
| 35 | static OutputFile *CreateTemporary(const std::string &pFileTemplate, |
| 36 | unsigned pFlags); |
| 37 | |
| 38 | OutputFile(const std::string &pFilename, unsigned pFlags = 0); |
| 39 | |
| 40 | ssize_t write(const void *pBuf, size_t count); |
| 41 | |
| 42 | void truncate(); |
| 43 | |
| 44 | // This is similar to the system call dup(). It creates a copy of the file |
| 45 | // descriptor it contains and wrap it in llvm::raw_fd_ostream object. It |
| 46 | // returns a non-NULL object if everything goes well and user should later |
| 47 | // use delete operator to destroy it by itself. |
| 48 | llvm::raw_fd_ostream *dup(); |
| 49 | }; |
| 50 | |
| 51 | } // end namespace bcc |
| 52 | |
| 53 | #endif // BCC_EXECUTION_ENGINE_OUTPUT_FILE_H |