first pass at list view, w/ asynchronous offset chain gathering

src/ctrl/ctrl_core.c

@@ -4443,7 +4443,6 @@ ctrl_thread__eval_scope_begin(Arena *arena, CTRL_UserBreakpointList *user_bps, C
   //
   {
     E_InterpretCtx *ctx = &scope->interpret_ctx;
-    ctx->space_read    = ctrl_eval_space_read;
     ctx->primary_space = eval_modules_primary->space;
     ctx->reg_arch      = eval_modules_primary->arch;
     ctx->reg_space     = e_space_make(CTRL_EvalSpaceKind_Entity);

src/eval/eval_core.h

@@ -766,7 +766,6 @@ struct E_BaseCtx
   E_Module *primary_module;
   
   // rjf: space hooks
-  void *space_rw_user_data;
   E_SpaceGenFunction *space_gen;
   E_SpaceRWFunction *space_read;
   E_SpaceRWFunction *space_write;

src/eval/eval_interpret.c

@@ -130,9 +130,9 @@ e_space_read(E_Space space, void *out, Rng1U64 range)
       
       //- rjf: default -> use hooks
       default:
-      if(e_interpret_ctx->space_read != 0)
+      if(e_base_ctx->space_read != 0)
       {
-        result = e_interpret_ctx->space_read(space, out, range);
+        result = e_base_ctx->space_read(space, out, range);
       }break;
     }
   }
@@ -145,13 +145,13 @@ e_space_write(E_Space space, void *in, Rng1U64 range)
 {
   ProfBeginFunction();
   B32 result = 0;
-  if(e_interpret_ctx->space_write != 0)
+  if(e_base_ctx->space_write != 0)
   {
     switch(space.kind)
     {
       default:
       {
-        result = e_interpret_ctx->space_write(space, in, range);
+        result = e_base_ctx->space_write(space, in, range);
       }break;
     }
   }

src/eval/eval_interpret.h

@@ -10,8 +10,6 @@
 typedef struct E_InterpretCtx E_InterpretCtx;
 struct E_InterpretCtx
 {
-  E_SpaceRWFunction *space_read;
-  E_SpaceRWFunction *space_write;
   E_Space primary_space;
   Arch reg_arch;
   E_Space reg_space;

src/eval/eval_types.c

@@ -2573,47 +2573,246 @@ E_TYPE_EXPAND_RANGE_FUNCTION_DEF(array)
 ////////////////////////////////
 //~ rjf: (Built-In Type Hooks) `list` lens
 
-typedef struct E_ListGatherArtifact E_ListGatherArtifact;
-struct E_ListGatherArtifact
-{
-  U64 *node_vaddrs;
-  U64 node_vaddrs_count;
-};
-
 internal AC_Artifact
 e_list_gather_artifact_create(String8 key, B32 *cancel_signal, B32 *retry_out, U64 *gen_out)
 {
+  Temp scratch = scratch_begin(0, 0);
   
+  //- rjf: unpack key
+  E_Space space = {0};
+  U64 base_off = 0;
+  U64 member_element_off = 0;
+  U64 member_size = 0;
+  E_SpaceRWFunction *space_read = 0;
+  {
+    U64 key_read_off = 0;
+    key_read_off += str8_deserial_read_struct(key, key_read_off, &space);
+    key_read_off += str8_deserial_read_struct(key, key_read_off, &base_off);
+    key_read_off += str8_deserial_read_struct(key, key_read_off, &member_element_off);
+    key_read_off += str8_deserial_read_struct(key, key_read_off, &member_size);
+    key_read_off += str8_deserial_read_struct(key, key_read_off, &space_read);
+  }
+  
+  //- rjf: gather chain
+  typedef struct HitOffsetNode HitOffsetNode;
+  struct HitOffsetNode
+  {
+    HitOffsetNode *next;
+    U64 off;
+  };
+  typedef struct OffsetChunk OffsetChunk;
+  struct OffsetChunk
+  {
+    OffsetChunk *next;
+    U64 *v;
+    U64 count;
+    U64 cap;
+  };
+  OffsetChunk *first_chunk = 0;
+  OffsetChunk *last_chunk = 0;
+  U64 total_count = 0;
+  {
+    U64 hit_slots_count = 4096;
+    HitOffsetNode **hit_slots = push_array(scratch.arena, HitOffsetNode *, hit_slots_count);
+    for(U64 off = base_off, next_off = 0;; off = next_off)
+    {
+      //- rjf: see if we've cycled
+      B32 hit_cycle = 0;
+      {
+        U64 hash = u64_hash_from_str8(str8_struct(&off));
+        U64 slot_idx = hash%hit_slots_count;
+        for(HitOffsetNode *n = hit_slots[slot_idx]; n != 0; n = n->next)
+        {
+          if(n->off == off)
+          {
+            hit_cycle = 1;
+            break;
+          }
+        }
+      }
+      
+      //- rjf: terminate loop
+      B32 terminated = (hit_cycle || off == 0);
+      if(terminated)
+      {
+        break;
+      }
+      
+      //- rjf: another node -> push offset to chunk list
+      OffsetChunk *chunk = last_chunk;
+      if(chunk == 0 || chunk->count >= chunk->cap)
+      {
+        chunk = push_array(scratch.arena, OffsetChunk, 1);
+        SLLQueuePush(first_chunk, last_chunk, chunk);
+        chunk->cap = 1024;
+        chunk->v = push_array_no_zero(scratch.arena, U64, chunk->cap);
+      }
+      chunk->v[chunk->count] = off;
+      chunk->count += 1;
+      total_count += 1;
+      
+      //- rjf: read next offset, advance
+      if(!space_read(space, &next_off, r1u64(off + member_element_off, off + member_element_off + member_size)))
+      {
+        break;
+      }
+    }
+  }
+  
+  //- rjf: flatten
+  Arena *arena = 0;
+  U64 node_offs_count = 0;
+  U64 *node_offs = 0;
+  if(total_count != 0)
+  {
+    arena = arena_alloc();
+    node_offs_count = total_count;
+    node_offs = push_array_no_zero(arena, U64, node_offs_count);
+    {
+      U64 idx = 0;
+      for EachNode(n, OffsetChunk, first_chunk)
+      {
+        MemoryCopy(node_offs + idx, n->v, n->count * sizeof(n->v[0]));
+        idx += n->count;
+      }
+    }
+  }
+  
+  //- rjf: package
+  AC_Artifact artifact = {0};
+  {
+    artifact.u64[0] = (U64)arena;
+    artifact.u64[1] = (U64)node_offs;
+    artifact.u64[2] = node_offs_count;
+  }
+  
+  scratch_end(scratch);
+  return artifact;
 }
 
 internal void
 e_list_gather_artifact_destroy(AC_Artifact artifact)
 {
-  
+  Arena *arena = (Arena *)artifact.u64[0];
+  if(arena != 0)
+  {
+    arena_release(arena);
+  }
 }
 
-E_TYPE_EXPAND_INFO_FUNCTION_DEF(list)
+typedef struct E_ListIRExt E_ListIRExt;
+struct E_ListIRExt
 {
-  E_Type *type = e_type_from_key(eval.irtree.type_key);
+  U64 *offs;
+  U64 offs_count;
+};
+
+E_TYPE_IREXT_FUNCTION_DEF(list)
+{
+  E_IRExt result = {0};
+  E_Type *type = e_type_from_key(irtree->type_key);
   String8 next_link_member_name = str8_lit("next");
   if(type->args != 0 && type->count > 0)
   {
     next_link_member_name = type->args[0]->string;
   }
-  E_TypeKey node_type_key = e_type_key_unwrap(eval.irtree.type_key, E_TypeUnwrapFlag_All);
+  E_TypeKey node_type_key = e_type_key_unwrap(irtree->type_key, E_TypeUnwrapFlag_All);
   E_Member next_link_member = e_type_member_from_key_name__cached(node_type_key, next_link_member_name);
+  E_TypeExpandInfo info = {0, 0};
   if(next_link_member.kind != E_MemberKind_DataField)
   {
     // TODO(rjf): error reporting
   }
   else
   {
+    Temp scratch = scratch_begin(&arena, 1);
+    Access *access = access_open();
     
+    // rjf: evaluate first offset
+    E_OpList oplist = e_oplist_from_irtree(scratch.arena, irtree->root);
+    String8 bytecode = e_bytecode_from_oplist(scratch.arena, &oplist);
+    E_Interpretation base_off_interpret = e_interpret(bytecode);
+    
+    // rjf: get artifact
+#pragma pack(push, 1)
+    struct
+    {
+      E_Space space;
+      U64 base_off;
+      U64 member_element_off;
+      U64 member_size;
+      E_SpaceRWFunction *space_read;
+    }
+    key_data =
+    {
+      base_off_interpret.space,
+      base_off_interpret.value.u64,
+      next_link_member.off,
+      e_type_byte_size_from_key(next_link_member.type_key),
+      e_base_ctx->space_read,
+    };
+#pragma pack(pop)
+    AC_Artifact gather_artifact = ac_artifact_from_key(access, str8_struct(&key_data), e_list_gather_artifact_create, e_list_gather_artifact_destroy, 0);
+    U64 *offs = (U64 *)gather_artifact.u64[1];
+    U64 offs_count = gather_artifact.u64[2];
+    
+    // rjf: fill info from artifact
+    E_ListIRExt *ext = push_array(arena, E_ListIRExt, 1);
+    ext->offs = offs;
+    ext->offs_count = offs_count;
+    result.user_data = ext;
+    
+    access_close(access);
+    scratch_end(scratch);
   }
-  E_TypeExpandInfo info = {0, 0};
+  return result;
+}
+
+E_TYPE_EXPAND_INFO_FUNCTION_DEF(list)
+{
+  E_ListIRExt *ext = (E_ListIRExt *)eval.irtree.user_data;
+  U64 count = 0;
+  if(ext != 0)
+  {
+    count = ext->offs_count;
+  }
+  E_TypeExpandInfo info = {0, count};
   return info;
 }
 
+E_TYPE_ACCESS_FUNCTION_DEF(list)
+{
+  E_IRTreeAndType result = {&e_irnode_nil};
+  E_ListIRExt *ext = (E_ListIRExt *)lhs_irtree->user_data;
+  if(ext != 0 && expr->kind == E_ExprKind_ArrayIndex)
+  {
+    Temp scratch = scratch_begin(&arena, 1);
+    
+    // rjf: compute index
+    E_Expr *rhs_expr = expr->last;
+    E_IRTreeAndType rhs_irtree = e_push_irtree_and_type_from_expr(scratch.arena, overridden, &e_default_identifier_resolution_rule, 0, 0, rhs_expr);
+    E_OpList rhs_oplist = e_oplist_from_irtree(scratch.arena, rhs_irtree.root);
+    String8 rhs_bytecode = e_bytecode_from_oplist(scratch.arena, &rhs_oplist);
+    E_Interpretation rhs_interpret = e_interpret(rhs_bytecode);
+    U64 idx = rhs_interpret.value.u64;
+    
+    // rjf: get offset
+    U64 off = 0;
+    if(idx < ext->offs_count)
+    {
+      off = ext->offs[idx];
+    }
+    
+    // rjf: generate IR tree to compute this offset w/ the node type
+    result.root = e_irtree_const_u(arena, off);
+    result.type_key = e_type_key_unwrap(lhs_irtree->type_key, E_TypeUnwrapFlag_AllDecorative);
+    result.mode = E_Mode_Offset;
+    
+    scratch_end(scratch);
+  }
+  return result;
+}
+
 E_TYPE_EXPAND_RANGE_FUNCTION_DEF(list)
 {
   U64 read_range_count = dim_1u64(idx_range);

src/lib_rdi_make/rdi_make.c

@@ -1179,6 +1179,7 @@ rdim_bake_params_concat_in_place(RDIM_BakeParams *dst, RDIM_BakeParams *src)
 {
   // rjf: join top-level info (deduplicate - throw away conflicts)
   {
+    dst->subset_flags |= src->subset_flags;
     if(dst->top_level_info.arch == RDI_Arch_NULL)
     {
       dst->top_level_info.arch = src->top_level_info.arch;

src/mule/mule_main.cpp

@@ -569,6 +569,18 @@ type_coverage_eval_tests(void)
   
   Linked_List list = {&list, &list, 0};
   
+  struct SLLNode
+  {
+    SLLNode *next;
+    int x;
+  };
+  SLLNode node6 = {0, 6};
+  SLLNode node5 = {&node6, 5};
+  SLLNode node4 = {&node5, 4};
+  SLLNode node3 = {&node4, 3};
+  SLLNode node2 = {&node3, 2};
+  SLLNode node1 = {&node2, 1};
+  
   Alias1 a1 = has_enums.kind;
   Alias2 a2 = has_enums.flags;
   Alias3 a3 = has_enums;

src/raddbg/raddbg_core.c

@@ -12511,6 +12511,7 @@ rd_frame(void)
         {str8_lit("range1"),      0, 0, 0,        0, 0, {0}},
         {str8_lit("array"),       0, 0, 1,        0, 0, {E_TYPE_EXPAND_INFO_FUNCTION_NAME(array), E_TYPE_EXPAND_RANGE_FUNCTION_NAME(array)}},
         {str8_lit("slice"),       0, 0, 1,        E_TYPE_IREXT_FUNCTION_NAME(slice), E_TYPE_ACCESS_FUNCTION_NAME(slice), {E_TYPE_EXPAND_INFO_FUNCTION_NAME(slice), E_TYPE_EXPAND_RANGE_FUNCTION_NAME(slice)}},
+        {str8_lit("list"),        0, 0, 1,        E_TYPE_IREXT_FUNCTION_NAME(list), E_TYPE_ACCESS_FUNCTION_NAME(list), {E_TYPE_EXPAND_INFO_FUNCTION_NAME(list), E_TYPE_EXPAND_RANGE_FUNCTION_NAME(list)}},
         {str8_lit("text"),        0, 0, 0,        0, 0, {0}, RD_VIEW_UI_FUNCTION_NAME(text),              EV_EXPAND_RULE_INFO_FUNCTION_NAME(text)},
         {str8_lit("disasm"),      0, 0, 0,        0, 0, {0}, RD_VIEW_UI_FUNCTION_NAME(disasm),            EV_EXPAND_RULE_INFO_FUNCTION_NAME(disasm)},
         {str8_lit("memory"),      0, 0, 0,        0, 0, {0}, RD_VIEW_UI_FUNCTION_NAME(memory),            EV_EXPAND_RULE_INFO_FUNCTION_NAME(memory)},
@@ -12685,8 +12686,6 @@ rd_frame(void)
     E_InterpretCtx *interpret_ctx = push_array(scratch.arena, E_InterpretCtx, 1);
     {
       E_InterpretCtx *ctx = interpret_ctx;
-      ctx->space_read        = rd_eval_space_read;
-      ctx->space_write       = rd_eval_space_write;
       ctx->primary_space     = eval_modules_primary->space;
       ctx->reg_arch          = eval_modules_primary->arch;
       ctx->reg_space         = rd_eval_space_from_ctrl_entity(thread, CTRL_EvalSpaceKind_Entity);