Summary
Creates a shared region that can be used with multiple IOBuffer objects.
Declaration
#include <zircon/syscalls-next.h>
zx_status_t zx_iob_create_shared_region(uint64_t options,
uint64_t size,
zx_handle_t* out);
Description
Creates a shared region that can be used with multiple IOBuffer objects.
options
must be zero. size
must be a multiple of the page size.
Return value
On success, ZX_OK
is returned and out
will be populated with a new handle.
Errors
ZX_ERR_ACCESS_DENIED
The proess does not have permissions to create shared IOBuffer
regions.
ZX_ERR_INVALID_ARGS
options
was nonzero (there are no non-default options supported at
this time), or size
was zero or not a multiple of the page size.
ZX_ERR_NO_MEMORY
Failure due to lack of memory to allocate the shared region.