2014-09-04 07:44:53 +04:00
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/* include/g/a.h
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**
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** This file is in the public domain.
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*/
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2014-11-05 03:29:08 +03:00
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/** Tunables.
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**/
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# undef U3_MEMORY_DEBUG
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# ifdef U3_MEMORY_DEBUG
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# define u3_leak_on(x) (u3_Code = x)
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# define u3_leak_off (u3_Code = 0)
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# endif
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2014-09-04 07:44:53 +04:00
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2014-11-05 03:29:08 +03:00
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# define u3_cc_bits U3_OS_LoomBits // 28, max 29
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# define u3_cc_page 12 // 16Kbyte pages
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# define u3_cc_pages (1 << (u3_cc_bits - u3_cc_page)) // 2^16 pages
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# define u3_cc_words (1 << u3_cc_bits)
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# define u3_cc_bytes (c3_w)((1 << (2 + u3_cc_bits)))
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# define u3_Loom ((c3_w *)(void *)U3_OS_LoomBase)
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/** Data structures.
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**/
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/* u3_post: pointer offset into u3_Loom; _p suffix; declare as u3p().
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*/
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typedef c3_w u3_post;
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# define u3p(type) u3_post
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/* u3_noun: tagged pointer.
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**
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** If bit 31 is 0, a u3_noun is a direct 31-bit atom ("cat").
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** If bit 31 is 1 and bit 30 0, an indirect atom ("pug").
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** If bit 31 is 1 and bit 30 1, an indirect cell ("pom").
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**
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** Bits 0-29 are a word offset against u3_Loom (u3_post).
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*/
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typedef c3_w u3_noun;
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/* u3_none - out-of-band noun.
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*/
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# define u3_none (u3_noun)0xffffffff
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/* Informative typedefs. Use if you like.
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*/
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typedef u3_noun u3_atom; // must be atom
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typedef u3_noun u3_term; // @tas
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typedef u3_noun u3_mote; // @tas
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typedef u3_noun u3_cell; // must be cell
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typedef u3_noun u3_trel; // must be triple
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typedef u3_noun u3_qual; // must be quadruple
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typedef u3_noun u3_quin; // must be quintuple
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typedef u3_noun u3_bean; // loobean: 0 == u3_yes, 1 == u3_no
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typedef u3_noun u3_weak; // may be u3_none
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typedef u3_noun (*u3_funk)(u3_noun);
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typedef u3_noun (*u3_funq)(u3_noun, u3_noun);
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/** Typedefs.
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**/
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/* u3_atom, u3_cell: logical atom and cell structures.
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*/
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typedef struct {
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c3_w mug_w;
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} u3_cs_noun;
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typedef struct {
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c3_w mug_w;
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c3_w len_w;
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c3_w buf_w[0];
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} u3_cs_atom;
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typedef struct {
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c3_w mug_w;
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u3_noun hed;
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u3_noun tel;
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} u3_cs_cell;
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/* Inside a noun.
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*/
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# define u3_co_is_cat(som) (((som) >> 31) ? u3_no : u3_yes)
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# define u3_co_is_dog(som) (((som) >> 31) ? u3_yes : u3_no)
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# define u3_co_is_pug(som) ((2 == ((som) >> 30)) ? u3_yes : u3_no)
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# define u3_co_is_pom(som) ((3 == ((som) >> 30)) ? u3_yes : u3_no)
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# define u3_co_to_off(som) ((som) & 0x3fffffff)
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# define u3_co_to_ptr(som) (u3_co_into(u3_co_to_off(som)))
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# define u3_co_to_wtr(som) ((c3_w *)u3_co_to_ptr(som))
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# define u3_co_to_pug(off) (off | 0x80000000)
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# define u3_co_to_pom(off) (off | 0xc0000000)
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# define u3_co_is_atom(som) u3_or(u3_co_is_cat(som), \
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u3_co_is_pug(som))
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# define u3_co_is_cell(som) u3_co_is_pom(som)
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# define u3_co_de_twin(dog, dog_w) ((dog & 0xc0000000) | u3_co_outa(dog_w))
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# define u3_co_h(som) \
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( u3_so(u3_co_is_cell(som)) \
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? ( ((u3_cs_cell *)u3_co_to_ptr(som))->hed )\
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: u3_cm_bail(c3__exit) )
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# define u3_co_t(som) \
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( u3_so(u3_co_is_cell(som)) \
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? ( ((u3_cs_cell *)u3_co_to_ptr(som))->tel )\
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: u3_cm_bail(c3__exit) )
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/* u3_cs_box: classic allocation box.
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**
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** The box size is also stored at the end of the box in classic
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** bad ass malloc style. Hence a box is:
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**
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** ---
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** siz_w
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** use_w
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** if(debug) cod_w
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** user data
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** siz_w
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** ---
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**
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** Do not attempt to adjust this structure!
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*/
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typedef struct _u3_cs_box {
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c3_w siz_w; // size of this box
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c3_w use_w; // reference count; free if 0
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# ifdef U3_MEMORY_DEBUG
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c3_w eus_w; // recomputed refcount
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c3_w cod_w; // tracing code
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# endif
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} u3_cs_box;
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# define u3_co_boxed(len_w) (len_w + c3_wiseof(u3_cs_box) + 1)
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# define u3_co_boxto(box_v) ( (void *) \
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( ((c3_w *)(void*)(box_v)) + \
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c3_wiseof(u3_cs_box) ) )
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# define u3_co_botox(tox_v) ( (struct _u3_cs_box *) \
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(void *) \
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( ((c3_w *)(void*)(tox_v)) - \
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c3_wiseof(u3_cs_box) ) )
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/* u3_cs_fbox: free node in heap. Sets minimum node size.
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**
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*/
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typedef struct _u3_cs_fbox {
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u3_cs_box box_u;
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u3p(struct _u3_cs_fbox) pre_p;
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u3p(struct _u3_cs_fbox) nex_p;
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} u3_cs_fbox;
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# define u3_cc_minimum 6
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# define u3_cc_fbox_no 28
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/* u3_cs_road: contiguous allocation and execution context.
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**
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** A road is a normal heap-stack system, except that the heap
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** and stack can point in either direction. Therefore, inside
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** a road, we can nest another road in the opposite direction.
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**
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** When the opposite road completes, its heap is left on top of
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** the opposite heap's stack. It's no more than the normal
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** behavior of a stack machine for all subcomputations to push
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** their results, internally durable, on the stack.
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**
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** The performance tradeoff of "leaping" - reversing directions
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** in the road - is that if the outer computation wants to
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** preserve the results of the inner one, not just use them for
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** temporary purposes, it has to copy them.
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**
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** This is a trivial cost in some cases, a prohibitive cost in
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** others. The upside, of course, is that all garbage accrued
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** in the inner computation is discarded at zero cost.
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**
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** The goal of the road system is the ability to *layer* memory
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** models. If you are allocating on a road, you have no idea
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** how deep within a nested road system you are - in other words,
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** you have no idea exactly how durable your result may be.
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** But free space is never fragmented within a road.
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**
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** Roads do not reduce the generality or performance of a memory
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** system, since even the most complex GC system can be nested
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** within a road at no particular loss of performance - a road
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** is just a block of memory. The cost of road allocation is,
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** at least in theory, the branch prediction hits when we try to
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** decide which side of the road we're allocating on. The road
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** system imposes no pointer read or write barriers, of course.
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**
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** The road can point in either direction. If cap > hat, it
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** looks like this ("north"):
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**
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** 0 rut hat ffff
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** | | | |
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** |~~~~~~~~~~~~-------##########################+++++++$~~~~~|
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** | | | |
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** 0 cap mat ffff
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**
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** Otherwise, it looks like this ("south"):
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**
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** 0 mat cap ffff
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** | | | |
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** |~~~~~~~~~~~~$++++++##########################--------~~~~~|
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** | | | |
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** 0 hat rut ffff
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**
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** Legend: - is durable storage (heap); + is temporary storage
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** (stack); ~ is deep storage (immutable); $ is the allocation block;
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** # is free memory.
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**
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** Pointer restrictions: pointers stored in + can point anywhere,
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** except to more central pointers in +. (Ie, all pointers from
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** stack to stack must point downward on the stack.) Pointers in
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** - can only point to - or ~; pointers in ~ only point to ~.
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**
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** To "leap" is to create a new inner road in the ### free space.
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** but in the reverse direction, so that when the inner road
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** "falls" (terminates), its durable storage is left on the
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** temporary storage of the outer road.
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**
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** In all cases, the pointer in a u3_noun is a word offset into
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** u3H, the top-level road.
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*/
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typedef struct _u3_cs_road {
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struct _u3_cs_road* par_u; // parent road
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struct _u3_cs_road* kid_u; // child road list
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struct _u3_cs_road* nex_u; // sibling road
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struct _u3_cs_road* now_u; // current road pointer
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u3p(c3_w) cap_p; // top of transient region
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u3p(c3_w) hat_p; // top of durable region
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u3p(c3_w) mat_p; // bottom of transient region
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u3p(c3_w) rut_p; // bottom of durable region
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u3p(c3_w) ear_p; // original cap if kid is live
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c3_w fut_w[32]; // futureproof buffer
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struct { // escape buffer
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union {
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jmp_buf buf;
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c3_w buf_w[256]; // futureproofing
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};
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} esc;
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struct { // miscellaneous config
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c3_w fag_w; // flag bits
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} how; //
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struct { // allocation pools
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u3p(u3_cs_fbox) fre_p[u3_cc_fbox_no]; // heap by node size log
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c3_w fre_w; // number of free words
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} all;
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struct { // jet dashboard
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u3p(u3_ch_root) har_p; // jet index (old style)
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u3_noun das; // dashboard (new style)
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} jed;
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struct { // namespace
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u3_noun flu; // (list $+(* (unit))), inward
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} ski;
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struct { // trace stack
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u3_noun tax; // (list ,*)
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u3_noun mer; // emergency buffer to release
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} bug;
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struct { // profile stack
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c3_d nox_d; // nock steps
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u3_noun don; // ++path
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u3_noun day; // profile data, ++doss
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} pro;
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struct { // memoization
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u3p(u3_ch_root) har_p; // (map (pair term noun) noun)
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} cax;
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} u3_cs_road;
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typedef u3_cs_road u3_road;
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/** Flags.
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**/
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enum u3_cs_flag {
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u3_cs_flag_debug = 0x1, // debug memory
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u3_cs_flag_gc = 0x2, // garbage collect once
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u3_cs_flag_sand = 0x4, // sand mode, bump allocation
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u3_cs_flag_die = 0x8 // process was asked to exit
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};
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/** Macros.
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**/
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# define u3_co_into(x) ((void *)(u3_Loom + (x)))
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# define u3_co_outa(p) (((c3_w*)(void*)(p)) - u3_Loom)
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# define u3to(type, x) ((type *) u3_co_into(x))
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# define u3of(type, x) (u3_co_outa((type *)x))
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# define u3_co_is_north(r) ((r->cap_p > r->hat_p) ? u3_yes : u3_no)
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# define u3_co_is_south(r) ((u3_so(u3_co_is_north(r))) ? u3_no : u3_yes)
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# define u3_co_open(r) ( (u3_yes == u3_co_is_north(r)) \
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? (c3_w)(r->cap_p - r->hat_p) \
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: (c3_w)(r->hat_p - r->cap_p) )
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# define u3_co_north_is_senior(r, dog) \
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u3_say((u3_co_to_off(dog) < r->rut_p) || \
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(u3_co_to_off(dog) >= r->mat_p))
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# define u3_co_north_is_junior(r, dog) \
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u3_say((u3_co_to_off(dog) >= r->cap_p) && \
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(u3_co_to_off(dog) < r->mat_p))
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# define u3_co_north_is_normal(r, dog) \
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u3_and(u3_not(u3_co_north_is_senior(r, dog)), \
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u3_not(u3_co_north_is_junior(r, dog)))
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# define u3_co_south_is_senior(r, dog) \
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u3_say((u3_co_to_off(dog) < r->mat_p) || \
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(u3_co_to_off(dog) >= r->rut_p))
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# define u3_co_south_is_junior(r, dog) \
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u3_say((u3_co_to_off(dog) < r->cap_p) && \
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(u3_co_to_off(dog) >= r->mat_p))
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# define u3_co_south_is_normal(r, dog) \
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u3_and(u3_not(u3_co_south_is_senior(r, dog)), \
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u3_not(u3_co_south_is_junior(r, dog)))
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# define u3_co_is_junior(r, som) \
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( u3_so(u3_co_is_cat(som)) \
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? u3_no \
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: u3_so(u3_co_is_north(r)) \
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? u3_co_north_is_junior(r, som) \
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|
: u3_co_south_is_junior(r, som) )
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|
# define u3_co_is_senior(r, som) \
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|
( u3_so(u3_co_is_cat(som)) \
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? u3_yes \
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|
: u3_so(u3_co_is_north(r)) \
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? u3_co_north_is_senior(r, som) \
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: u3_co_south_is_senior(r, som) )
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/* Word axis macros. For 31-bit axes only.
|
|
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|
*/
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|
|
/* u3_ax_dep(): number of axis bits.
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|
|
|
*/
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|
# define u3_ax_dep(a_w) (c3_bits_word(a_w) - 1)
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|
/* u3_ax_cap(): root axis, 2 or 3.
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|
|
|
*/
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# define u3_ax_cap(a_w) (0x2 | (a_w >> (u3_ax_dep(a_w) - 1)))
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|
/* u3_ax_mas(): remainder after cap.
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|
|
|
*/
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|
|
# define u3_ax_mas(a_w) \
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|
( (a_w & ~(1 << u3_ax_dep(a_w))) | (1 << (u3_ax_dep(a_w) - 1)) )
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|
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|
/* u3_ax_peg(): connect two axes.
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|
|
|
*/
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|
|
# define u3_ax_peg(a_w, b_w) \
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|
|
( (a_w << u3_ax_dep(b_w)) | (b_w &~ (1 << u3_ax_dep(b_w))) )
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|
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|
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|
|
/* Conventional axes for gate call.
|
|
|
|
*/
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|
|
# define u3_cv_pay 3 // payload
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|
|
# define u3_cv_sam 6 // sample
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|
|
# define u3_cv_sam_1 6
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|
|
# define u3_cv_sam_2 12
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|
# define u3_cv_sam_3 13
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|
|
# define u3_cv_sam_4 24
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|
|
# define u3_cv_sam_5 25
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|
|
# define u3_cv_sam_6 26
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|
|
# define u3_cv_sam_12 52
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|
|
# define u3_cv_sam_13 53
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|
|
# define u3_cv_sam_7 27
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|
|
# define u3_cv_con 7 // context
|
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|
# define u3_cv_con_2 14 // context
|
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|
|
# define u3_cv_con_3 15 // context
|
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|
|
# define u3_cv_con_sam 30 // sample in gate context
|
|
|
|
# define u3_cv_noc 2 // deprecated
|
|
|
|
# define u3_cv_bat 2 // battery
|
|
|
|
|
|
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|
|
/** Globals.
|
|
|
|
**/
|
|
|
|
/* u3_Road / u3R: current road (thread-local).
|
|
|
|
*/
|
|
|
|
c3_global u3_road* u3_Road;
|
|
|
|
# define u3R u3_Road
|
|
|
|
|
|
|
|
/* u3_Code: memory code.
|
|
|
|
*/
|
|
|
|
#ifdef U3_MEMORY_DEBUG
|
|
|
|
c3_global c3_w u3_Code;
|
|
|
|
#endif
|
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|
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|
|
/** Functions.
|
|
|
|
**/
|
2014-09-04 07:44:53 +04:00
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|
/** Allocation.
|
|
|
|
**/
|
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|
|
/* Basic allocation.
|
|
|
|
*/
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_walloc(): allocate storage measured in words.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
void*
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_walloc(c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_malloc(): allocate storage measured in bytes.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
void*
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_malloc(c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_free(): free storage.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
void
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_free(void* lag_v);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_wealloc(): word realloc.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
void*
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_wealloc(void* lag_v, c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_realloc(): byte realloc.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
void*
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_realloc(void* lag_v, c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
|
|
|
|
|
|
|
/* Reference and arena control.
|
|
|
|
*/
|
2014-10-01 10:34:30 +04:00
|
|
|
/* u3_ca_gain(): gain a reference count in normal space.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_weak
|
|
|
|
u3_ca_gain(u3_weak som);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-10-01 10:34:30 +04:00
|
|
|
/* u3_ca_take(): gain, copying juniors.
|
|
|
|
*/
|
|
|
|
u3_noun
|
|
|
|
u3_ca_take(u3_noun som);
|
|
|
|
|
2014-10-31 00:40:05 +03:00
|
|
|
/* u3_ca_left(): true of junior if preserved.
|
|
|
|
*/
|
|
|
|
c3_o
|
|
|
|
u3_ca_left(u3_noun som);
|
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_lose(): lose a reference.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
void
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_lose(u3_weak som);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-10-24 04:35:26 +04:00
|
|
|
/* u3_ca_wash(): wash all lazy mugs in subtree. RETAIN.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
u3_ca_wash(u3_noun som);
|
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_use(): reference count.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
c3_w
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_use(u3_noun som);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-10-09 06:20:57 +04:00
|
|
|
/* u3_ca_mark_ptr(): mark a pointer for gc. Produce size.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
c3_w
|
2014-10-09 06:20:57 +04:00
|
|
|
u3_ca_mark_ptr(void* ptr_v);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-10-09 06:20:57 +04:00
|
|
|
/* u3_ca_mark_noun(): mark a noun for gc. Produce size.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
c3_w
|
2014-10-09 06:20:57 +04:00
|
|
|
u3_ca_mark_noun(u3_noun som);
|
|
|
|
|
|
|
|
/* u3_ca_sweep(): sweep a fully marked road.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
u3_ca_sweep(c3_c* cap_c);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-16 03:56:37 +04:00
|
|
|
/* u3_ca_sane(): check allocator sanity.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
u3_ca_sane(void);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-10-11 09:32:58 +04:00
|
|
|
/* u3_ca_detect(): axis (som) is referenced from (fum).
|
|
|
|
**
|
|
|
|
** (som) and (fum) are both RETAINED.
|
|
|
|
*/
|
|
|
|
c3_d
|
|
|
|
u3_ca_detect(u3_noun fum, u3_noun som);
|
|
|
|
|
2014-10-10 05:27:02 +04:00
|
|
|
/* u3_ca_lush(): leak push.
|
|
|
|
*/
|
|
|
|
c3_w
|
|
|
|
u3_ca_lush(c3_w lab_w);
|
|
|
|
|
|
|
|
/* u3_ca_lop(): leak pop.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
u3_ca_lop(c3_w lab_w);
|
|
|
|
|
2014-10-31 00:40:05 +03:00
|
|
|
/* u3_ca_print_memory: print memory amount.
|
|
|
|
*/
|
|
|
|
void
|
|
|
|
u3_ca_print_memory(c3_c* cap_c, c3_w wor_w);
|
|
|
|
|
2014-09-04 07:44:53 +04:00
|
|
|
/* Atoms from proto-atoms.
|
|
|
|
*/
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_slab(): create a length-bounded proto-atom.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
c3_w*
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_slab(c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_slaq(): u3_ca_slaq() with a defined blocksize.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
|
|
|
c3_w*
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_ca_slaq(c3_g met_g, c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_malt(): measure and finish a proto-atom.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_noun
|
|
|
|
u3_ca_malt(c3_w* sal_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_moot(): finish a pre-measured proto-atom; dangerous.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_noun
|
|
|
|
u3_ca_moot(c3_w* sal_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
2014-09-06 00:13:24 +04:00
|
|
|
/* u3_ca_mint(): finish a measured proto-atom.
|
2014-09-04 07:44:53 +04:00
|
|
|
*/
|
2014-09-06 00:13:24 +04:00
|
|
|
u3_noun
|
|
|
|
u3_ca_mint(c3_w* sal_w, c3_w len_w);
|
2014-09-04 07:44:53 +04:00
|
|
|
|
|
|
|
|