Per-Domain dynamic objects

include/smp/perdomain.h

struct perdomain_descriptor

struct perdomain_descriptor {
    char                              *name;
    size_t                            size;
    size_t                            align;
    void                              **perdomain_ptrs;
    perdomain_descriptor_constructor  constructor;
};

struct perdomain_descriptor referenced types:

• perdomain_descriptor_constructor

type alias perdomain_descriptor_constructor

typedef void (*perdomain_descriptor_constructor)(void *, size_t);

Defines

PERDOMAIN_DECLARE(__n, __type, __ctor)

#define PERDOMAIN_DECLARE(__n, __type, __ctor)                                 \ extern __type __perdomain_##__n;                                           \ static void __perdomain_ctor_##__n(void *inst, size_t cpu) {               \ if (__ctor)                                                            \ __ctor((__type *) inst, cpu);                                      \ }                                                                          \ static volatile struct perdomain_descriptor __perdomain_desc_##__n         \ __attribute__((section(".kernel_perdomain_desc"))) = {                 \ .name = #__n,                                                      \ .size = sizeof(__type),                                            \ .align = _Alignof(__type),                                         \ .perdomain_ptrs = NULL,                                            \ .constructor = __perdomain_ctor_##__n,                             \ };                                                                         \ __type __perdomain_##__n

PERDOMAIN_PTR_FOR_DOMAIN(name, d)

#define PERDOMAIN_PTR_FOR_DOMAIN(name, d)                                      \ (__perdomain_desc_##name.perdomain_ptrs[d])

PERDOMAIN_READ_FOR_DOMAIN(name, d)

#define PERDOMAIN_READ_FOR_DOMAIN(name, d)                                     \ (*((typeof(__perdomain_##name) *) PERDOMAIN_PTR_FOR_DOMAIN(name, d)))

PERDOMAIN_PTR(name)

#define PERDOMAIN_PTR(name) PERDOMAIN_PTR_FOR_DOMAIN(name, domain_local_id())

PERDOMAIN_READ(name)

#define PERDOMAIN_READ(name)                                                   \ (*((typeof(__perdomain_##name) *) PERDOMAIN_PTR(name)))

PERDOMAIN_WRITE(name, val)

#define PERDOMAIN_WRITE(name, val) (PERDOMAIN_READ(name) = (val))

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