PosixLockedPageAllocator Class Reference

Inheritance diagram for PosixLockedPageAllocator:

Public Member Functions
	PosixLockedPageAllocator ()
void *	AllocateLocked (size_t len, bool *lockingSuccess) override
void	FreeLocked (void *addr, size_t len) override
size_t	GetLimit () override
Public Member Functions inherited from LockedPageAllocator
virtual	~LockedPageAllocator ()

Private Attributes
size_t	page_size

Detailed Description

LockedPageAllocator specialized for OSes that don't try to be special snowflakes.

Constructor & Destructor Documentation

PosixLockedPageAllocator()

PosixLockedPageAllocator::PosixLockedPageAllocator

(

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Member Function Documentation

AllocateLocked()

void * PosixLockedPageAllocator::AllocateLocked ( size_t  len, bool *  lockingSuccess  )

overridevirtual

Allocate and lock memory pages. If len is not a multiple of the system page size, it is rounded up. Returns nullptr in case of allocation failure.

If locking the memory pages could not be accomplished it will still return the memory, however the lockingSuccess flag will be false. lockingSuccess is undefined if the allocation fails.

Implements LockedPageAllocator.

FreeLocked()

void PosixLockedPageAllocator::FreeLocked ( void *  addr, size_t  len  )

overridevirtual

Unlock and free memory pages. Clear the memory before unlocking.

Implements LockedPageAllocator.

GetLimit()

size_t PosixLockedPageAllocator::GetLimit ( )

overridevirtual

Get the total limit on the amount of memory that may be locked by this process, in bytes. Return size_t max if there is no limit or the limit is unknown. Return 0 if no memory can be locked at all.

Implements LockedPageAllocator.

Member Data Documentation

page_size

size_t PosixLockedPageAllocator::page_size

private

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The documentation for this class was generated from the following file:

• src/support/lockedpool.cpp