Truncate a file to a specified length. More...
#include "request-fs.hpp"
Public Types | |
using | on_request_t = std::function< void(truncate _request) > |
The function type of the callback called when the truncate request has completed. | |
Public Types inherited from uv::fs | |
using | uv_t = ::uv_fs_t |
Public Types inherited from uv::request | |
using | uv_t = ::uv_req_t |
using | on_destroy_t = std::function< void(void *_data) > |
The function type of the callback called when the request object is about to be destroyed. | |
Public Member Functions | |
truncate (const truncate &)=default | |
truncate & | operator= (const truncate &)=default |
truncate (truncate &&) noexcept=default | |
truncate & | operator= (truncate &&) noexcept=default |
on_request_t & | on_request () const noexcept |
file | handle () const noexcept |
The file which this truncate request has been running on. More... | |
int64_t | offset () const noexcept |
The offset this trucate request has been performed at. | |
int | run (file &_file, int64_t _offset) |
Run the request. Truncate the _file to a size of _offset bytes. More... | |
operator const uv_t * () const noexcept | |
operator uv_t * () noexcept | |
Public Member Functions inherited from uv::fs | |
fs (const fs &)=default | |
fs & | operator= (const fs &)=default |
fs (fs &&) noexcept=default | |
fs & | operator= (fs &&) noexcept=default |
::uv_fs_type | fs_type () const noexcept |
The tag indicating a subtype of the filesystem request. More... | |
uv::loop | loop () const noexcept |
The libuv loop that started this filesystem request and where completion will be reported. | |
operator const uv_t * () const noexcept | |
operator uv_t * () noexcept | |
Public Member Functions inherited from uv::request | |
request (const request &_that) | |
request & | operator= (const request &_that) |
request (request &&_that) noexcept | |
request & | operator= (request &&_that) noexcept |
void | swap (request &_that) noexcept |
std::uintptr_t | id () const noexcept |
long | nrefs () const noexcept |
The current number of existing references to the same object as this request variable refers to. | |
int | uv_status () const noexcept |
The status value returned by the last executed libuv API function on this request. | |
on_destroy_t & | on_destroy () const noexcept |
::uv_req_type | type () const noexcept |
The tag indicating a libuv type of the request. More... | |
const char * | type_name () const noexcept |
A string containing the name of the request type. | |
void *const & | data () const noexcept |
The pointer to the user-defined arbitrary data. libuv and uvcc does not use this field. | |
void *& | data () noexcept |
int | cancel () noexcept |
Cancel a pending request. More... | |
operator const uv_t * () const noexcept | |
operator uv_t * () noexcept | |
operator bool () const noexcept | |
Equivalent to (uv_status() >= 0) . | |
Truncate a file to a specified length.
Definition at line 751 of file request-fs.hpp.
|
inlinenoexcept |
The file which this truncate request has been running on.
It is guaranteed that it will be a valid instance at least within the request callback.
Definition at line 803 of file request-fs.hpp.
|
inline |
Run the request. Truncate the _file
to a size of _offset
bytes.
uv_fs_ftruncate()
. ftruncate()
. The _offset
value of < 0 means using of the current file position.
_tell()
, _telli64()
. Definition at line 814 of file request-fs.hpp.