| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #ifndef BIN_FDUTILS_H_ |
| #define BIN_FDUTILS_H_ |
| |
| #include "bin/builtin.h" |
| #include "platform/globals.h" |
| |
| |
| namespace dart { |
| namespace bin { |
| |
| class FDUtils { |
| public: |
| static bool SetCloseOnExec(intptr_t fd); |
| |
| static bool SetNonBlocking(intptr_t fd); |
| static bool SetBlocking(intptr_t fd); |
| |
| // Checks whether the file descriptor is blocking. If the function |
| // returns true the value pointed to by is_blocking will be set to |
| // the blocking state of the file descriptor. If the function |
| // returns false the system call for checking the file descriptor |
| // failed and the value pointed to by is_blocking is not modified. |
| static bool IsBlocking(intptr_t fd, bool* is_blocking); |
| |
| static intptr_t AvailableBytes(intptr_t fd); |
| |
| // Reads the requested number of bytes from a file descriptor. This |
| // function will only return on short reads if an error occours in |
| // which case it returns -1 and errno is still valid. The file |
| // descriptor must be in blocking mode. |
| static ssize_t ReadFromBlocking(int fd, void* buffer, size_t count); |
| |
| // Writes the requested number of bytes to a file descriptor. This |
| // function will only return on short writes if an error occours in |
| // which case it returns -1 and errno is still valid. The file |
| // descriptor must be in blocking mode. |
| static ssize_t WriteToBlocking(int fd, const void* buffer, size_t count); |
| |
| private: |
| DISALLOW_ALLOCATION(); |
| DISALLOW_IMPLICIT_CONSTRUCTORS(FDUtils); |
| }; |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // BIN_FDUTILS_H_ |