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stream: make memory_file properly copyable and movable

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2023-12-06 11:02:12 +01:00
parent 5a4194c9ba
commit 9967b41eae
1 changed files with 118 additions and 1 deletions
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119
include/stdex/stream.hpp
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@ -3204,8 +3204,10 @@ namespace stdex
m_reserved(size), m_reserved(size),
m_manage(true) m_manage(true)
{ {
if (!m_data) if (!m_data) {
m_state = state_t::fail;
throw std::bad_alloc(); throw std::bad_alloc();
}
#if SET_FILE_OP_TIMES #if SET_FILE_OP_TIMES
m_ctime = m_atime = m_mtime = time_point::now(); m_ctime = m_atime = m_mtime = time_point::now();
#endif #endif
@ -3266,6 +3268,121 @@ namespace stdex
/// ///
inline memory_file(_In_ const stdex::sstring& filename, _In_ int mode) : memory_file(filename.c_str(), mode) {} inline memory_file(_In_ const stdex::sstring& filename, _In_ int mode) : memory_file(filename.c_str(), mode) {}
///
/// Copies content from another file
///
/// \param[in] other Other file
///
memory_file(_In_ const memory_file& other) :
basic_file(other),
m_data(reinterpret_cast<uint8_t*>(malloc(other.m_size))),
m_offset(other.m_offset),
m_size(other.m_size),
m_reserved(other.m_size),
m_manage(true)
#if SET_FILE_OP_TIMES
, m_ctime(other.m_ctime)
, m_atime(other.m_atime)
, m_mtime(other.m_mtime)
#endif
{
if (!m_data) {
m_state = state_t::fail;
throw std::bad_alloc();
}
memcpy(m_data, other.m_data, other.m_size);
}
///
/// Copies content from another file
///
/// \param[in] other Other file
///
memory_file& operator=(_In_ const memory_file& other)
{
if (this != std::addressof(other)) {
*static_cast<basic_file*>(this) = other;
if (m_manage && m_data)
free(m_data);
m_data = reinterpret_cast<uint8_t*>(malloc(other.m_size));
if (!m_data) {
m_state = state_t::fail;
throw std::bad_alloc();
}
memcpy(m_data, other.m_data, other.m_size);
m_offset = other.m_offset;
m_size = other.m_size;
m_reserved = other.m_size;
m_manage = true;
#if SET_FILE_OP_TIMES
m_ctime = other.m_ctime;
m_atime = other.m_atime;
m_mtime = other.m_mtime;
#endif
}
return *this;
}
///
/// Moves content from another file
///
/// \param[in] other Other file
///
memory_file(_Inout_ memory_file&& other) noexcept :
basic_file(std::move(other)),
m_data(other.m_data),
m_offset(other.m_offset),
m_size(other.m_size),
m_reserved(other.m_reserved),
m_manage(other.m_manage)
#if SET_FILE_OP_TIMES
, m_ctime(other.m_ctime)
, m_atime(other.m_atime)
, m_mtime(other.m_mtime)
#endif
{
other.m_state = state_t::ok;
other.m_data = nullptr;
other.m_offset = 0;
other.m_size = 0;
other.m_reserved = 0;
other.m_manage = true;
#if SET_FILE_OP_TIMES
other.m_ctime = other.m_atime = other.m_mtime = time_point::now();
#endif
}
///
/// Moves content from another file
///
/// \param[in] other Other file
///
memory_file& operator=(_Inout_ memory_file&& other) noexcept
{
if (this != std::addressof(other)) {
*static_cast<basic_file*>(this) = std::move(other);
if (m_manage && m_data)
free(m_data);
m_data = other.m_data;
other.m_data = nullptr;
m_offset = other.m_offset;
other.m_offset = 0;
m_size = other.m_size;
other.m_size = 0;
m_reserved = other.m_reserved;
other.m_reserved = 0;
m_manage = other.m_manage;
other.m_manage = true;
#if SET_FILE_OP_TIMES
m_ctime = other.m_ctime;
m_atime = other.m_atime;
m_mtime = other.m_mtime;
other.m_ctime = other.m_atime = other.m_mtime = time_point::now();
#endif
}
return *this;
}
virtual ~memory_file() virtual ~memory_file()
{ {
if (m_manage && m_data) if (m_manage && m_data)