vmem_create(9) - NetBSD Manual Pages

VMEM_CREATE(9)         NetBSD Kernel Developer's Manual         VMEM_CREATE(9)


NAME
vmem_create -- create a vmem arena
SYNOPSIS
#include <sys/vmem.h> vmem_t * vmem_create(const char *name, vmem_addr_t base, vmem_size_t size, vmem_size_t quantum, vmem_addr_t (*allocfn)(vmem_t *, vmem_size_t, vmem_size_t *, vm_flag_t), void (*freefn)(vmem_t *, vmem_addr_t, vmem_size_t), vmem_t *source, vmem_size_t qcache_max, vm_flag_t flags, int ipl);
DESCRIPTION
vmem_create() creates a new vmem arena. name The string to describe the vmem. base The start address of the initial span. It can be VMEM_ADDR_NULL if no initial span is required. size The size of the initial span. quantum The smallest unit of allocation. allocfn The callback function used to import spans from the backend arena. freefn The callback function used to free spans to the backend arena. source The backend arena. qcache_max The largest size of allocations which can be served by quan- tum cache. It is merely a hint and can be ignored. flags Either of: VM_SLEEP Can sleep until enough resources are available. VM_NOSLEEP Don't sleep. Immediately return NULL if there are not enough resources available. ipl Interrupt level to be blocked for allocating from vmem.
RETURN VALUES
vmem_create() return a pointer to the newly allocated vmem_t. Otherwise, it returns NULL.
SEE ALSO
intro(9), vmem(9) NetBSD 5.1 September 24, 2008 NetBSD 5.1

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