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std::pmr::monotonic_buffer_resource::monotonic_buffer_resource

From cppreference.com
 
 
Dynamic memory management
Uninitialized memory algorithms
Constrained uninitialized memory algorithms
Allocators
Garbage collection support
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)
(C++11)(until C++23)



 
 
monotonic_buffer_resource();
(1) (since C++17)
explicit monotonic_buffer_resource( std::pmr::memory_resource* upstream );
(2) (since C++17)
explicit monotonic_buffer_resource( std::size_t initial_size );
(3) (since C++17)
monotonic_buffer_resource( std::size_t initial_size,
                           std::pmr::memory_resource* upstream );
(4) (since C++17)
monotonic_buffer_resource( void* buffer, std::size_t buffer_size );
(5) (since C++17)
monotonic_buffer_resource( void* buffer, std::size_t buffer_size,
                           std::pmr::memory_resource* upstream );
(6) (since C++17)
monotonic_buffer_resource( const monotonic_buffer_resource& ) = delete;
(7) (since C++17)

Constructs a monotonic_buffer_resource. The constructors not taking an upstream memory resource pointer use the return value of std::pmr::get_default_resource as the upstream memory resource.

1,2) Sets the current buffer to null and the next buffer size to an implementation-defined size.
3,4) Sets the current buffer to null and the next buffer size to a size no smaller than initial_size.
5,6) Sets the current buffer to buffer and the next buffer size to buffer_size (but not less than 1). Then increase the next buffer size by an implementation-defined growth factor (which does not have to be integral).
7) Copy constructor is deleted.

[edit] Parameters

upstream - the upstream memory resource to use; must point to a valid memory resource
initial_size - the minimum size of the first buffer to allocate; must be greater than zero
buffer - the initial buffer to use
buffer_size - the size of the initial buffer; cannot be greater than the number of bytes in buffer