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Diffstat (limited to 'utils/process/system.hpp')
| -rw-r--r-- | utils/process/system.hpp | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/utils/process/system.hpp b/utils/process/system.hpp new file mode 100644 index 000000000000..a794876f3579 --- /dev/null +++ b/utils/process/system.hpp @@ -0,0 +1,66 @@ +// Copyright 2010 The Kyua Authors. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of Google Inc. nor the names of its contributors +// may be used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +/// \file utils/process/system.hpp +/// Indirection to perform system calls. +/// +/// The indirections exposed in this file are provided to allow unit-testing of +/// particular system behaviors (e.g. failures). The caller of a routine in +/// this library is allowed, for testing purposes only, to explicitly replace +/// the pointers in this file with custom functions to inject a particular +/// behavior into the library code. +/// +/// Do not include this header from other header files. +/// +/// It may be nice to go one step further and completely abstract the library +/// functions in here to provide exception-based error reporting. + +#if !defined(UTILS_PROCESS_SYSTEM_HPP) +#define UTILS_PROCESS_SYSTEM_HPP + +extern "C" { +#include <unistd.h> +} + +namespace utils { +namespace process { +namespace detail { + + +extern int (*syscall_dup2)(const int, const int); +extern pid_t (*syscall_fork)(void); +extern int (*syscall_open)(const char*, const int, ...); +extern int (*syscall_pipe)(int[2]); +extern pid_t (*syscall_waitpid)(const pid_t, int*, const int); + + +} // namespace detail +} // namespace process +} // namespace utils + +#endif // !defined(UTILS_PROCESS_SYSTEM_HPP) |