diff options
Diffstat (limited to 'utility')
-rw-r--r-- | utility/Android.mk | 3 | ||||
-rw-r--r-- | utility/CMakeLists.txt | 1 | ||||
-rw-r--r-- | utility/FullIo.cpp | 80 | ||||
-rw-r--r-- | utility/FullIo.hpp | 68 | ||||
-rw-r--r-- | utility/Utility.cpp | 13 | ||||
-rw-r--r-- | utility/Utility.h | 19 |
6 files changed, 182 insertions, 2 deletions
diff --git a/utility/Android.mk b/utility/Android.mk index 09f3de7..168c423 100644 --- a/utility/Android.mk +++ b/utility/Android.mk @@ -34,7 +34,8 @@ LOCAL_PATH := $(call my-dir) common_src_files := \ Tokenizer.cpp \ Utility.cpp \ - NaiveTokenizer.cpp + NaiveTokenizer.cpp \ + FullIo.cpp \ common_module := libpfw_utility common_module_tags := optional diff --git a/utility/CMakeLists.txt b/utility/CMakeLists.txt index 9f81027..5386f5b 100644 --- a/utility/CMakeLists.txt +++ b/utility/CMakeLists.txt @@ -29,6 +29,7 @@ add_library(pfw_utility STATIC Tokenizer.cpp Utility.cpp + FullIo.cpp NaiveTokenizer.cpp) # '-fPIC' needed for linking against shared libraries (e.g. libparameter) diff --git a/utility/FullIo.cpp b/utility/FullIo.cpp new file mode 100644 index 0000000..59765b5 --- /dev/null +++ b/utility/FullIo.cpp @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2015, Intel Corporation + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. 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. + * + * 3. Neither the name of the copyright holder 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 HOLDER 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. + */ + +#include "FullIo.hpp" + +#include <cerrno> +#include <unistd.h> + +namespace utility +{ + +/** Workaround c++ `void *` arithmetic interdiction. */ +template <class Ptr> +Ptr *add(Ptr *ptr, size_t count) { + return (char *)ptr + count; +} + +template <class Buff> +static bool fullAccess(ssize_t (&accessor)(int, Buff, size_t), + bool (&accessFailed)(ssize_t), + int fd, Buff buf, size_t count) { + size_t done = 0; // Bytes already access in previous iterations + while (done < count) { + ssize_t accessed = accessor(fd, add(buf, done), count - done); + if (accessFailed(accessed)) { + return false; + } + done += accessed; + } + return true; +} + +static bool accessFailed(ssize_t accessRes) { + return accessRes == -1 and errno != EAGAIN and errno != EINTR; +} + +bool fullWrite(int fd, const void *buf, size_t count) { + return fullAccess(::write, accessFailed, fd, buf, count); +} + +static bool readFailed(ssize_t readRes) { + if (readRes == 0) { // read should not return 0 (EOF) + errno = 0; + return true; + } + return accessFailed(readRes); +} +bool fullRead(int fd, void *buf, size_t count) { + return fullAccess(::read, readFailed, fd, buf, count); +} + +} // namespace utility + diff --git a/utility/FullIo.hpp b/utility/FullIo.hpp new file mode 100644 index 0000000..353551d --- /dev/null +++ b/utility/FullIo.hpp @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2015, Intel Corporation + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. 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. + * + * 3. Neither the name of the copyright holder 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 HOLDER 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. + */ + +#pragma once + +#include <cstddef> + +namespace utility +{ + +/** Write *completely* a buffer in a file descriptor. + * + * A wrapper around unistd::write that resumes write on incomplete access + * and EAGAIN/EINTR error. + * + * @see man 2 write for the parameters. + * + * @return true if the buffer could be completely written, + * false on failure (see write's man errno section). + */ +bool fullWrite(int fd, const void *buf, size_t count); + +/** Fill a buffer from a file descriptor. + * + * A wrapper around unistd::read that resumes read on incomplete access + * and EAGAIN/EINTR error. + * + * @see man 2 read for the parameters. + * + * @return true if the buffer could be completely fill, + * false on failure (see read's man errno section). + * + * If the buffer could not be filled due to an EOF, return false but set + * errno to 0. + * @TODO Add a custom strerror to prevent logging "success" (`sterror(0)`) on + * EOF errors ? + */ +bool fullRead(int fd, void *buf, size_t count); + +} // namespace utility + diff --git a/utility/Utility.cpp b/utility/Utility.cpp index dc0bce1..e5f689a 100644 --- a/utility/Utility.cpp +++ b/utility/Utility.cpp @@ -32,6 +32,7 @@ #include <sstream> #include <iterator> +#include <stdint.h> using std::string; @@ -72,3 +73,15 @@ void CUtility::asString(const std::map<std::string, std::string>& mapStr, CUtility::asString(listKeysValues, strOutput, strItemSeparator); } +void CUtility::appendTitle(string& strTo, const string& strTitle) +{ + strTo += "\n" + strTitle + "\n"; + + uint32_t uiLength = strTitle.size(); + + while (uiLength--) { + + strTo += "="; + } + strTo += "\n"; +} diff --git a/utility/Utility.h b/utility/Utility.h index 51f796f..93acd82 100644 --- a/utility/Utility.h +++ b/utility/Utility.h @@ -33,6 +33,7 @@ #include <string> #include <list> #include <map> +#include <sstream> class CUtility { @@ -62,5 +63,21 @@ public: std::string& strOutput, const std::string& strItemSeparator = ", ", const std::string& strKeyValueSeparator = ":"); -}; + /** Utility to easily convert a builtin type into string + * + * FIXME: Should be replaced by std::to_string after C++11 introduction + */ + template <class T> + static std::string toString(T uiValue) + { + std::ostringstream ostr; + + ostr << uiValue; + + return ostr.str(); + } + + /** Utility to underline */ + static void appendTitle(std::string& strTo, const std::string& strTitle); +}; |