Revert "fixing line endings"

This reverts commit dc75469e78.
This commit is contained in:
Dennis Luxen
2014-08-15 18:53:00 +02:00
parent dc75469e78
commit 5efa9664db
131 changed files with 0 additions and 21457 deletions
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#ifndef OSMIUM_DETAIL_MMAP_VECTOR_ANON_HPP
#define OSMIUM_DETAIL_MMAP_VECTOR_ANON_HPP
/*
This file is part of Osmium (http://osmcode.org/libosmium).
Copyright 2013,2014 Jochen Topf <jochen@topf.org> and others (see README).
Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#ifdef __linux__
#include <cstddef>
#include <osmium/index/detail/typed_mmap.hpp>
#include <osmium/index/detail/mmap_vector_base.hpp>
namespace osmium {
namespace detail {
/**
* This class looks and behaves like STL vector, but uses mmap internally.
*/
template <typename T>
class mmap_vector_anon : public mmap_vector_base<T, mmap_vector_anon> {
public:
mmap_vector_anon() :
mmap_vector_base<T, osmium::detail::mmap_vector_anon>(
-1,
osmium::detail::mmap_vector_size_increment,
0,
osmium::detail::typed_mmap<T>::map(osmium::detail::mmap_vector_size_increment)) {
}
void reserve(size_t new_capacity) {
if (new_capacity > this->capacity()) {
this->data(osmium::detail::typed_mmap<T>::remap(this->data(), this->capacity(), new_capacity));
this->m_capacity = new_capacity;
}
}
}; // class mmap_vector_anon
} // namespace detail
} // namespace osmium
#endif // __linux__
#endif // OSMIUM_DETAIL_MMAP_VECTOR_ANON_HPP
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#ifndef OSMIUM_DETAIL_MMAP_VECTOR_BASE_HPP
#define OSMIUM_DETAIL_MMAP_VECTOR_BASE_HPP
/*
This file is part of Osmium (http://osmcode.org/libosmium).
Copyright 2013,2014 Jochen Topf <jochen@topf.org> and others (see README).
Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include <cstddef>
#include <new>
#include <stdexcept>
#include <osmium/index/detail/typed_mmap.hpp>
namespace osmium {
namespace detail {
constexpr size_t mmap_vector_size_increment = 1024 * 1024;
/**
* This is a base class for implementing classes that look like
* STL vector but use mmap internally. This class can not be used
* on it's own. Use the derived classes mmap_vector_anon or
* mmap_vector_file.
*/
template <typename T, template <typename> class TDerived>
class mmap_vector_base {
protected:
int m_fd;
size_t m_capacity;
size_t m_size;
T* m_data;
explicit mmap_vector_base(int fd, size_t capacity, size_t size, T* data) :
m_fd(fd),
m_capacity(capacity),
m_size(size),
m_data(data) {
}
explicit mmap_vector_base(int fd, size_t capacity, size_t size) :
m_fd(fd),
m_capacity(capacity),
m_size(size),
m_data(osmium::detail::typed_mmap<T>::grow_and_map(capacity, m_fd)) {
}
void data(T* data) {
m_data = data;
}
public:
typedef T value_type;
typedef T& reference;
typedef const T& const_reference;
typedef T* pointer;
typedef const T* const_pointer;
typedef T* iterator;
typedef const T* const_iterator;
~mmap_vector_base() {
osmium::detail::typed_mmap<T>::unmap(m_data, m_capacity);
}
size_t capacity() const {
return m_capacity;
}
size_t size() const {
return m_size;
}
bool empty() const {
return m_size == 0;
}
const T* data() const {
return m_data;
}
T* data() {
return m_data;
}
T& operator[](size_t n) {
return m_data[n];
}
T at(size_t n) const {
if (n >= m_size) {
throw std::out_of_range("out of range");
}
return m_data[n];
}
void clear() {
m_size = 0;
}
void shrink_to_fit() {
// XXX do something here
}
void push_back(const T& value) {
if (m_size >= m_capacity) {
resize(m_size+1);
}
m_data[m_size] = value;
++m_size;
}
void resize(size_t new_size) {
if (new_size > this->capacity()) {
static_cast<TDerived<T>*>(this)->reserve(new_size + osmium::detail::mmap_vector_size_increment);
}
if (new_size > this->size()) {
new (this->data() + this->size()) T[new_size - this->size()];
}
this->m_size = new_size;
}
iterator begin() {
return m_data;
}
iterator end() {
return m_data + m_size;
}
const_iterator begin() const {
return m_data;
}
const_iterator end() const {
return m_data + m_size;
}
const_iterator cbegin() {
return m_data;
}
const_iterator cend() {
return m_data + m_size;
}
}; // class mmap_vector_base
} // namespace detail
} // namespace osmium
#endif // OSMIUM_DETAIL_MMAP_VECTOR_BASE_HPP
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#ifndef OSMIUM_DETAIL_MMAP_VECTOR_FILE_HPP
#define OSMIUM_DETAIL_MMAP_VECTOR_FILE_HPP
/*
This file is part of Osmium (http://osmcode.org/libosmium).
Copyright 2013,2014 Jochen Topf <jochen@topf.org> and others (see README).
Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include <cstddef>
#include <osmium/index/detail/typed_mmap.hpp>
#include <osmium/index/detail/mmap_vector_base.hpp>
#include <osmium/index/detail/tmpfile.hpp>
namespace osmium {
namespace detail {
/**
* This class looks and behaves like STL vector, but mmap's a file internally.
*/
template <typename T>
class mmap_vector_file : public mmap_vector_base<T, mmap_vector_file> {
public:
explicit mmap_vector_file() :
mmap_vector_base<T, osmium::detail::mmap_vector_file>(
osmium::detail::create_tmp_file(),
osmium::detail::mmap_vector_size_increment,
0) {
}
explicit mmap_vector_file(int fd) :
mmap_vector_base<T, osmium::detail::mmap_vector_file>(
fd,
osmium::detail::typed_mmap<T>::file_size(fd) == 0 ? osmium::detail::mmap_vector_size_increment : osmium::detail::typed_mmap<T>::file_size(fd),
osmium::detail::typed_mmap<T>::file_size(fd)) {
}
void reserve(size_t new_capacity) {
if (new_capacity > this->capacity()) {
osmium::detail::typed_mmap<T>::unmap(this->data(), this->capacity());
osmium::detail::typed_mmap<T>::grow_file(new_capacity, this->m_fd);
osmium::detail::typed_mmap<T>::map(new_capacity, this->m_fd);
this->m_capacity = new_capacity;
}
}
}; // class mmap_vector_file
} // namespace detail
} // namespace osmium
#endif // OSMIUM_DETAIL_MMAP_VECTOR_FILE_HPP
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#ifndef OSMIUM_DETAIL_TMPFILE_HPP
#define OSMIUM_DETAIL_TMPFILE_HPP
/*
This file is part of Osmium (http://osmcode.org/libosmium).
Copyright 2013,2014 Jochen Topf <jochen@topf.org> and others (see README).
Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include <cerrno>
#include <cstdio>
#include <system_error>
namespace osmium {
namespace detail {
/**
* Create and open a temporary file. It is removed after opening.
*
* @return File descriptor of temporary file.
* @exception std::system_error if something went wrong.
*/
inline int create_tmp_file() {
FILE* file = ::tmpfile();
if (!file) {
throw std::system_error(errno, std::system_category(), "tempfile failed");
}
return fileno(file);
}
} // namespace detail
} // namespace osmium
#endif // OSMIUM_DETAIL_TMPFILE
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#ifndef OSMIUM_DETAIL_TYPED_MMAP_HPP
#define OSMIUM_DETAIL_TYPED_MMAP_HPP
/*
This file is part of Osmium (http://osmcode.org/libosmium).
Copyright 2013,2014 Jochen Topf <jochen@topf.org> and others (see README).
Boost Software License - Version 1.0 - August 17th, 2003
Permission is hereby granted, free of charge, to any person or organization
obtaining a copy of the software and accompanying documentation covered by
this license (the "Software") to use, reproduce, display, distribute,
execute, and transmit the Software, and to prepare derivative works of the
Software, and to permit third-parties to whom the Software is furnished to
do so, all subject to the following:
The copyright notices in the Software and this entire statement, including
the above license grant, this restriction and the following disclaimer,
must be included in all copies of the Software, in whole or in part, and
all derivative works of the Software, unless such copies or derivative
works are solely in the form of machine-executable object code generated by
a source language processor.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include <cerrno>
#include <cstddef>
#include <stdexcept>
#include <system_error>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
// for bsd systems
#ifndef MAP_ANONYMOUS
# define MAP_ANONYMOUS MAP_ANON
#endif
namespace osmium {
/**
* @brief Namespace for Osmium internal use
*/
namespace detail {
/**
* This is a helper class for working with memory mapped files and
* anonymous shared memory. It wraps the necessary system calls
* adding:
* - error checking: all functions throw exceptions where needed
* - internal casts and size calculations allow use with user defined
* type T instead of void*
*
* This class only contains static functions. It should never be
* instantiated.
*
* @tparam T Type of objects we want to store.
*/
template <typename T>
class typed_mmap {
public:
/**
* Create anonymous private memory mapping with enough space for size
* objects of type T.
*
* Note that no constructor is called for any of the objects in this memory!
*
* @param size Number of objects of type T that should fit into this memory
* @return Pointer to mapped memory
* @exception std::system_error If mmap(2) failed
*/
static T* map(size_t size) {
void* addr = ::mmap(nullptr, sizeof(T) * size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wold-style-cast"
if (addr == MAP_FAILED) {
throw std::system_error(errno, std::system_category(), "mmap failed");
}
#pragma GCC diagnostic pop
return reinterpret_cast<T*>(addr);
}
/**
* Create shared memory mapping of a file with enough space for size
* objects of type T. The file must already have at least the
* required size.
*
* Note that no constructor is called for any of the objects in this memory!
*
* @param size Number of objects of type T that should fit into this memory
* @param fd File descriptor
* @param write True if data should be writable
* @return Pointer to mapped memory
* @exception std::system_error If mmap(2) failed
*/
static T* map(size_t size, int fd, bool write = false) {
int prot = PROT_READ;
if (write) {
prot |= PROT_WRITE;
}
void* addr = ::mmap(nullptr, sizeof(T) * size, prot, MAP_SHARED, fd, 0);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wold-style-cast"
if (addr == MAP_FAILED) {
throw std::system_error(errno, std::system_category(), "mmap failed");
}
#pragma GCC diagnostic pop
return reinterpret_cast<T*>(addr);
}
// mremap(2) is only available on linux systems
#ifdef __linux__
/**
* Grow memory mapping created with map().
*
* Note that no constructor is called for any of the objects in this memory!
*
* @param data Pointer to current mapping (as returned by typed_mmap())
* @param old_size Number of objects currently stored in this memory
* @param new_size Number of objects we want to have space for
* @exception std::system_error If mremap(2) call failed
*/
static T* remap(T* data, size_t old_size, size_t new_size) {
void* addr = ::mremap(reinterpret_cast<void*>(data), sizeof(T) * old_size, sizeof(T) * new_size, MREMAP_MAYMOVE);
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wold-style-cast"
if (addr == MAP_FAILED) {
throw std::system_error(errno, std::system_category(), "mremap failed");
}
#pragma GCC diagnostic pop
return reinterpret_cast<T*>(addr);
}
#endif
/**
* Release memory from map() call.
*
* Note that no destructor is called for the objects in this memory!
*
* @param data Pointer to the data
* @param size Number of objects of type T stored
* @exception std::system_error If munmap(2) call failed
*/
static void unmap(T* data, size_t size) {
if (::munmap(reinterpret_cast<void*>(data), sizeof(T) * size) != 0) {
throw std::system_error(errno, std::system_category(), "munmap failed");
}
}
/**
* Get number of objects of type T that would fit into a file.
*
* @param fd File descriptor
* @return Number of objects of type T in this file
* @exception std::system_error If fstat(2) call failed
* @exception std::length_error If size of the file isn't a multiple of sizeof(T)
*/
static size_t file_size(int fd) {
struct stat s;
if (fstat(fd, &s) < 0) {
throw std::system_error(errno, std::system_category(), "fstat failed");
}
if (s.st_size % sizeof(T) != 0) {
throw std::length_error("file size has to be multiple of object size");
}
return s.st_size / sizeof(T);
}
/**
* Grow file so there is enough space for at least new_size objects
* of type T. If the file is large enough already, nothing is done.
* The file is never shrunk.
*
* @param new_size Number of objects of type T that should fit into this file
* @param fd File descriptor
* @exception std::system_error If ftruncate(2) call failed
*/
static void grow_file(size_t new_size, int fd) {
if (file_size(fd) < new_size) {
if (::ftruncate(fd, sizeof(T) * new_size) < 0) {
throw std::system_error(errno, std::system_category(), "ftruncate failed");
}
}
}
/**
* Grow file to given size (if it is smaller) and mmap it.
*
* @param size Number of objects of type T that should fit into this file
* @param fd File descriptor
* @exception Errors thrown by grow_file() or map()
*/
static T* grow_and_map(size_t size, int fd) {
grow_file(size, fd);
return map(size, fd, true);
}
}; // class typed_mmap
} // namespace detail
} // namespace osmium
#endif // OSMIUM_DETAIL_TYPED_MMAP_HPP