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_SUPPORT_OUTPUT_FILE_H
18 #define BCC_SUPPORT_OUTPUT_FILE_H
19 
20 #include "bcc/Support/File.h"
21 #include "bcc/Support/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   OutputFile(const std::string &pFilename, unsigned pFlags = 0);
33 
34   ssize_t write(const void *pBuf, size_t count);
35 
36   void truncate();
37 
38   // This is similar to the system call dup(). It creates a copy of the file
39   // descriptor it contains and wrap it in llvm::raw_fd_ostream object. It
40   // returns a non-NULL object if everything goes well and user should later
41   // use delete operator to destroy it by itself.
42   llvm::raw_fd_ostream *dup();
43 };
44 
45 } // end namespace bcc
46 
47 #endif  // BCC_SUPPORT_OUTPUT_FILE_H
48