std::experimental::pmr::monotonic_buffer_resource:: do_allocate
|
virtual
void
*
do_allocate
(
std::
size_t
bytes,
std::
size_t
alignment
)
;
|
(library fundamentals TS) | |
Allocates storage.
If the current buffer has sufficient unused space to fit a block with the specified size and alignment, allocates the return block from the current buffer.
Otherwise, this function allocates a new buffer by calling
upstream_resource()->allocate(n, m)
, where
n
is not less than the greater of
bytes
and the
next buffer size
and
m
is not less than
alignment
. It sets the new buffer as the
current buffer
, increases the
next buffer size
by an implementation-defined growth factor (which is not necessarily integral), and then allocates the return block from the newly allocated buffer.
Return value
A pointer to allocated storage of at least bytes bytes in size, aligned to the specified alignment if such alignment is supported, and to alignof ( std:: max_align_t ) otherwise.
Exceptions
Throws nothing unless calling
allocate()
on the upstream memory resource throws.
See also
|
allocates memory
(public member function of
std::experimental::pmr::memory_resource
)
|
|
|
[virtual]
|
allocates memory
(virtual protected member function of
std::experimental::pmr::memory_resource
)
|