A special case of out_of_memory errors thrown when a low-level allocator with a fixed size runs out of memory.
For example, thrown by fixed_block_allocator or static_allocator.
It is derived from out_of_memory but does not provide its own handler.
The type of the handler called in the constructor of out_of_memory.
When an out of memory situation is encountered and the exception class created, this handler gets called. It is especially useful if exception support is disabled. It gets the allocator_info and the amount of memory that was tried to be allocated.
- Required Behavior:
- It can log the error, throw a different exception derived from
std::bad_alloc or abort the program. If it returns, this exception object will be created and thrown.
- Default Behavior:
- On a hosted implementation it logs the error on
stderr and continues execution, leading to this exception being thrown. On a freestanding implementation it does nothing.
- It is different from
std::new_handler; it will not be called in a loop trying to allocate memory or something like that. Its only job is to report the error.
|const char* what
- A static NTBS that describes the error. It does not contain any specific information since there is no memory for formatting.
h as the new handler in an atomic operation. A
nullptr sets the default handler.
- The previous handler. This is never
- The current handler. This is never
- The amount of memory that was tried to be allocated. This is the value passed in the constructor.