mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-15 18:12:47 +03:00
436 lines
12 KiB
C
436 lines
12 KiB
C
/* i/n/a.h
|
|
**
|
|
** This file is in the public domain.
|
|
*/
|
|
/** Options.
|
|
**/
|
|
/* U3_MEMORY_DEBUG: add debugging information to heap. Breaks image.
|
|
*/
|
|
# undef U3_MEMORY_DEBUG
|
|
|
|
/* U3_CELLOC_TOGGLE: enable toggling of the custum cell allocator
|
|
* via -g. This slightly slows down the cell allocator even when
|
|
* it's on. Note that toggling -g breaks the image. If
|
|
* U3_MEMORY_DEBUG is on, this should generally be on as well.
|
|
*/
|
|
# undef U3_CELLOC_TOGGLE
|
|
|
|
/** Constants.
|
|
**/
|
|
/* u3a_bits: number of bits in word-addressed pointer. 29 == 2GB.
|
|
*/
|
|
# define u3a_bits 29
|
|
|
|
/* u3a_page: number of bits in word-addressed page. 12 == 16Kbyte page.
|
|
*/
|
|
# define u3a_page 12
|
|
|
|
/* u3a_pages: number of pages in memory.
|
|
*/
|
|
# define u3a_pages (1 << (u3a_bits - u3a_page))
|
|
|
|
/* u3a_words: number of words in memory.
|
|
*/
|
|
# define u3a_words (1 << u3a_bits)
|
|
|
|
/* u3a_bytes: number of bytes in memory.
|
|
*/
|
|
# define u3a_bytes (c3_w)((1 << (2 + u3a_bits)))
|
|
|
|
/* u3a_minimum: minimum number of words in a box.
|
|
*/
|
|
#ifdef U3_MEMORY_DEBUG
|
|
# define u3a_minimum 8
|
|
#else
|
|
# define u3a_minimum 6
|
|
#endif
|
|
|
|
/* u3a_fbox_no: number of free lists per size.
|
|
*/
|
|
# define u3a_fbox_no 27
|
|
|
|
|
|
/** Structures.
|
|
**/
|
|
/* u3a_atom, u3a_cell: logical atom and cell structures.
|
|
*/
|
|
typedef struct {
|
|
c3_w mug_w;
|
|
} u3a_noun;
|
|
|
|
typedef struct {
|
|
c3_w mug_w;
|
|
c3_w len_w;
|
|
c3_w buf_w[0];
|
|
} u3a_atom;
|
|
|
|
typedef struct {
|
|
c3_w mug_w;
|
|
u3_noun hed;
|
|
u3_noun tel;
|
|
} u3a_cell;
|
|
|
|
/* u3a_box: classic allocation box.
|
|
**
|
|
** The box size is also stored at the end of the box in classic
|
|
** bad ass malloc style. Hence a box is:
|
|
**
|
|
** ---
|
|
** siz_w
|
|
** use_w
|
|
** user data
|
|
** siz_w
|
|
** ---
|
|
**
|
|
** Do not attempt to adjust this structure!
|
|
*/
|
|
typedef struct _u3a_box {
|
|
c3_w siz_w; // size of this box
|
|
c3_w use_w; // reference count; free if 0
|
|
# ifdef U3_MEMORY_DEBUG
|
|
c3_w eus_w; // recomputed refcount
|
|
c3_w cod_w; // tracing code
|
|
# endif
|
|
} u3a_box;
|
|
|
|
/* u3a_fbox: free node in heap. Sets minimum node size.
|
|
*/
|
|
typedef struct _u3a_fbox {
|
|
u3a_box box_u;
|
|
u3p(struct _u3a_fbox) pre_p;
|
|
u3p(struct _u3a_fbox) nex_p;
|
|
} u3a_fbox;
|
|
|
|
/* u3a_road: contiguous allocation and execution context.
|
|
*/
|
|
typedef struct _u3a_road {
|
|
u3p(struct _u3a_road) par_p; // parent road
|
|
u3p(struct _u3a_road) kid_p; // child road list
|
|
u3p(struct _u3a_road) nex_p; // sibling road
|
|
|
|
u3p(c3_w) cap_p; // top of transient region
|
|
u3p(c3_w) hat_p; // top of durable region
|
|
u3p(c3_w) mat_p; // bottom of transient region
|
|
u3p(c3_w) rut_p; // bottom of durable region
|
|
u3p(c3_w) ear_p; // original cap if kid is live
|
|
|
|
c3_w fut_w[32]; // futureproof buffer
|
|
|
|
struct { // escape buffer
|
|
union {
|
|
jmp_buf buf;
|
|
c3_w buf_w[256]; // futureproofing
|
|
};
|
|
} esc;
|
|
|
|
struct { // miscellaneous config
|
|
c3_w fag_w; // flag bits
|
|
} how; //
|
|
|
|
struct { // allocation pools
|
|
u3p(u3a_fbox) fre_p[u3a_fbox_no]; // heap by node size log
|
|
u3p(u3a_fbox) cel_p; // custom cell allocator
|
|
c3_w fre_w; // number of free words
|
|
} all;
|
|
|
|
struct { // jet dashboard
|
|
u3p(u3h_root) har_p; // warm state
|
|
u3_noun das; // cold state
|
|
} jed;
|
|
|
|
struct { // namespace
|
|
u3_noun flu; // (list $+(* (unit))), inward
|
|
} ski;
|
|
|
|
struct { // trace stack
|
|
u3_noun tax; // (list ,*)
|
|
u3_noun mer; // emergency buffer to release
|
|
} bug;
|
|
|
|
struct { // profile stack
|
|
c3_d nox_d; // nock steps
|
|
u3_noun don; // (list batt)
|
|
u3_noun day; // doss, only in u3H (moveme)
|
|
} pro;
|
|
|
|
struct { // memoization
|
|
u3p(u3h_root) har_p; // (map (pair term noun) noun)
|
|
} cax;
|
|
} u3a_road;
|
|
typedef u3a_road u3_road;
|
|
|
|
/* u3a_flag: flags for how.fag_w. All arena related.
|
|
*/
|
|
enum u3a_flag {
|
|
u3a_flag_sand = 0x1, // bump allocation (XX not impl)
|
|
};
|
|
|
|
|
|
/** Macros. Should be better commented.
|
|
**/
|
|
/* In and out of the box.
|
|
*/
|
|
# define u3a_boxed(len_w) (len_w + c3_wiseof(u3a_box) + 1)
|
|
# define u3a_boxto(box_v) ( (void *) \
|
|
( ((c3_w *)(void*)(box_v)) + \
|
|
c3_wiseof(u3a_box) ) )
|
|
# define u3a_botox(tox_v) ( (struct _u3a_box *) \
|
|
(void *) \
|
|
( ((c3_w *)(void*)(tox_v)) - \
|
|
c3_wiseof(u3a_box) ) )
|
|
/* Inside a noun.
|
|
*/
|
|
# define u3a_is_cat(som) (((som) >> 31) ? c3n : c3y)
|
|
# define u3a_is_dog(som) (((som) >> 31) ? c3y : c3n)
|
|
|
|
# define u3a_is_pug(som) ((2 == ((som) >> 30)) ? c3y : c3n)
|
|
# define u3a_is_pom(som) ((3 == ((som) >> 30)) ? c3y : c3n)
|
|
# define u3a_to_off(som) ((som) & 0x3fffffff)
|
|
# define u3a_to_ptr(som) (u3a_into(u3a_to_off(som)))
|
|
# define u3a_to_wtr(som) ((c3_w *)u3a_to_ptr(som))
|
|
# define u3a_to_pug(off) (off | 0x80000000)
|
|
# define u3a_to_pom(off) (off | 0xc0000000)
|
|
|
|
# define u3a_is_atom(som) c3o(u3a_is_cat(som), \
|
|
u3a_is_pug(som))
|
|
# define u3a_is_cell(som) u3a_is_pom(som)
|
|
# define u3a_de_twin(dog, dog_w) ((dog & 0xc0000000) | u3a_outa(dog_w))
|
|
|
|
# define u3a_h(som) \
|
|
( _(u3a_is_cell(som)) \
|
|
? ( ((u3a_cell *)u3a_to_ptr(som))->hed )\
|
|
: u3m_bail(c3__exit) )
|
|
|
|
# define u3a_t(som) \
|
|
( _(u3a_is_cell(som)) \
|
|
? ( ((u3a_cell *)u3a_to_ptr(som))->tel )\
|
|
: u3m_bail(c3__exit) )
|
|
|
|
# define u3a_into(x) ((void *)(u3_Loom + (x)))
|
|
# define u3a_outa(p) (((c3_w*)(void*)(p)) - u3_Loom)
|
|
|
|
# define u3a_is_north(r) __(r->cap_p > r->hat_p)
|
|
# define u3a_is_south(r) !u3a_is_north(r)
|
|
|
|
# define u3a_open(r) ( (c3y == u3a_is_north(r)) \
|
|
? (c3_w)(r->cap_p - r->hat_p) \
|
|
: (c3_w)(r->hat_p - r->cap_p) )
|
|
|
|
# define u3a_north_is_senior(r, dog) \
|
|
__((u3a_to_off(dog) < r->rut_p) || \
|
|
(u3a_to_off(dog) >= r->mat_p))
|
|
|
|
# define u3a_north_is_junior(r, dog) \
|
|
__((u3a_to_off(dog) >= r->cap_p) && \
|
|
(u3a_to_off(dog) < r->mat_p))
|
|
|
|
# define u3a_north_is_normal(r, dog) \
|
|
c3a(!(u3a_north_is_senior(r, dog)), \
|
|
!(u3a_north_is_junior(r, dog)))
|
|
|
|
# define u3a_south_is_senior(r, dog) \
|
|
__((u3a_to_off(dog) < r->mat_p) || \
|
|
(u3a_to_off(dog) >= r->rut_p))
|
|
|
|
# define u3a_south_is_junior(r, dog) \
|
|
__((u3a_to_off(dog) < r->cap_p) && \
|
|
(u3a_to_off(dog) >= r->mat_p))
|
|
|
|
# define u3a_south_is_normal(r, dog) \
|
|
c3a(!(u3a_south_is_senior(r, dog)), \
|
|
!(u3a_south_is_junior(r, dog)))
|
|
|
|
# define u3a_is_junior(r, som) \
|
|
( _(u3a_is_cat(som)) \
|
|
? c3n \
|
|
: _(u3a_is_north(r)) \
|
|
? u3a_north_is_junior(r, som) \
|
|
: u3a_south_is_junior(r, som) )
|
|
|
|
# define u3a_is_senior(r, som) \
|
|
( _(u3a_is_cat(som)) \
|
|
? c3y \
|
|
: _(u3a_is_north(r)) \
|
|
? u3a_north_is_senior(r, som) \
|
|
: u3a_south_is_senior(r, som) )
|
|
|
|
|
|
/** Globals.
|
|
**/
|
|
/* u3_Road / u3R: current road (thread-local).
|
|
*/
|
|
c3_global u3_road* u3a_Road;
|
|
# define u3R u3a_Road
|
|
|
|
/* u3_Code: memory code.
|
|
*/
|
|
#ifdef U3_MEMORY_DEBUG
|
|
c3_global c3_w u3_Code;
|
|
#endif
|
|
|
|
# define u3_Loom ((c3_w *)(void *)U3_OS_LoomBase)
|
|
|
|
/** Functions.
|
|
**/
|
|
/** Allocation.
|
|
**/
|
|
/* Word-aligned allocation.
|
|
*/
|
|
/* u3a_walloc(): allocate storage measured in words.
|
|
*/
|
|
void*
|
|
u3a_walloc(c3_w len_w);
|
|
|
|
/* u3a_celloc(): allocate a cell. Faster, sometimes.
|
|
*/
|
|
c3_w*
|
|
u3a_celloc(void);
|
|
|
|
/* u3a_wfree(): free storage.
|
|
*/
|
|
void
|
|
u3a_wfree(void* lag_v);
|
|
|
|
/* u3a_wealloc(): word realloc.
|
|
*/
|
|
void*
|
|
u3a_wealloc(void* lag_v, c3_w len_w);
|
|
|
|
/* C-style aligned allocation - *not* compatible with above.
|
|
*/
|
|
/* u3a_malloc(): aligned storage measured in bytes.
|
|
*/
|
|
void*
|
|
u3a_malloc(size_t len_i);
|
|
|
|
/* u3a_calloc(): aligned storage measured in bytes.
|
|
*/
|
|
void*
|
|
u3a_calloc(size_t num_i, size_t len_i);
|
|
|
|
/* u3a_realloc(): aligned realloc in bytes.
|
|
*/
|
|
void*
|
|
u3a_realloc(void* lag_v, size_t len_i);
|
|
|
|
/* u3a_realloc2(): gmp-shaped realloc.
|
|
*/
|
|
void*
|
|
u3a_realloc2(void* lag_v, size_t old_i, size_t new_i);
|
|
|
|
/* u3a_free(): free for aligned malloc.
|
|
*/
|
|
void
|
|
u3a_free(void* tox_v);
|
|
|
|
/* u3a_free2(): gmp-shaped free.
|
|
*/
|
|
void
|
|
u3a_free2(void* tox_v, size_t siz_i);
|
|
|
|
/* Reference and arena control.
|
|
*/
|
|
/* u3a_gain(): gain a reference count in normal space.
|
|
*/
|
|
u3_weak
|
|
u3a_gain(u3_weak som);
|
|
|
|
/* u3a_take(): gain, copying juniors.
|
|
*/
|
|
u3_noun
|
|
u3a_take(u3_noun som);
|
|
|
|
/* u3a_left(): true of junior if preserved.
|
|
*/
|
|
c3_o
|
|
u3a_left(u3_noun som);
|
|
|
|
/* u3a_lose(): lose a reference.
|
|
*/
|
|
void
|
|
u3a_lose(u3_weak som);
|
|
|
|
/* u3a_wash(): wash all lazy mugs in subtree. RETAIN.
|
|
*/
|
|
void
|
|
u3a_wash(u3_noun som);
|
|
|
|
/* u3a_use(): reference count.
|
|
*/
|
|
c3_w
|
|
u3a_use(u3_noun som);
|
|
|
|
/* u3a_luse(): check refcount sanity.
|
|
*/
|
|
void
|
|
u3a_luse(u3_noun som);
|
|
|
|
/* u3a_mark_ptr(): mark a pointer for gc. Produce size.
|
|
*/
|
|
c3_w
|
|
u3a_mark_ptr(void* ptr_v);
|
|
|
|
/* u3a_mark_mptr(): mark a u3_malloc-allocated ptr for gc.
|
|
*/
|
|
c3_w
|
|
u3a_mark_mptr(void* ptr_v);
|
|
|
|
/* u3a_mark_noun(): mark a noun for gc. Produce size.
|
|
*/
|
|
c3_w
|
|
u3a_mark_noun(u3_noun som);
|
|
|
|
/* u3a_sweep(): sweep a fully marked road.
|
|
*/
|
|
c3_w
|
|
u3a_sweep(void);
|
|
|
|
/* u3a_sane(): check allocator sanity.
|
|
*/
|
|
void
|
|
u3a_sane(void);
|
|
|
|
/* u3a_lush(): leak push.
|
|
*/
|
|
c3_w
|
|
u3a_lush(c3_w lab_w);
|
|
|
|
/* u3a_lop(): leak pop.
|
|
*/
|
|
void
|
|
u3a_lop(c3_w lab_w);
|
|
|
|
/* u3a_print_memory: print memory amount.
|
|
*/
|
|
void
|
|
u3a_print_memory(c3_c* cap_c, c3_w wor_w);
|
|
|
|
/* Atoms from proto-atoms.
|
|
*/
|
|
/* u3a_slab(): create a length-bounded proto-atom.
|
|
*/
|
|
c3_w*
|
|
u3a_slab(c3_w len_w);
|
|
|
|
/* u3a_slaq(): u3a_slab() with a defined blocksize.
|
|
*/
|
|
c3_w*
|
|
u3a_slaq(c3_g met_g, c3_w len_w);
|
|
|
|
/* u3a_malt(): measure and finish a proto-atom.
|
|
*/
|
|
u3_noun
|
|
u3a_malt(c3_w* sal_w);
|
|
|
|
/* u3a_moot(): finish a pre-measured proto-atom; dangerous.
|
|
*/
|
|
u3_noun
|
|
u3a_moot(c3_w* sal_w);
|
|
|
|
/* u3a_mint(): finish a measured proto-atom.
|
|
*/
|
|
u3_noun
|
|
u3a_mint(c3_w* sal_w, c3_w len_w);
|
|
|
|
|