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Fix O(n^2) icache flush

slava 2006-09-26 20:42:29 +00:00
parent 2196f3721b
commit 003d7cc91b
3 changed files with 29 additions and 26 deletions
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1
TODO.FACTOR.txt
View File

@ -5,6 +5,7 @@
- code GC:
- discard the free block at the end of the code heap on save
- minor GC takes too long now
- icache slowdown
+ ui:

40
vm/compiler.c
View File

@ -5,6 +5,16 @@ void init_compiler(CELL size)
new_heap(&compiling,size);
}
INLINE void iterate_code_heap_step(F_COMPILED *compiled, CODE_HEAP_ITERATOR iter)
{
CELL code_start = (CELL)(compiled + 1);
CELL reloc_start = code_start + compiled->code_length;
CELL literal_start = reloc_start + compiled->reloc_length;
CELL words_start = literal_start + compiled->literal_length;
iter(compiled,code_start,reloc_start,literal_start,words_start);
}
void iterate_code_heap(CODE_HEAP_ITERATOR iter)
{
F_BLOCK *scan = (F_BLOCK *)compiling.base;
@ -12,19 +22,7 @@ void iterate_code_heap(CODE_HEAP_ITERATOR iter)
while(scan)
{
if(scan->status != B_FREE)
{
F_COMPILED *compiled = (F_COMPILED *)(scan + 1);
CELL code_start = (CELL)(compiled + 1);
CELL reloc_start = code_start + compiled->code_length;
CELL literal_start = reloc_start + compiled->reloc_length;
CELL words_start = literal_start + compiled->literal_length;
iter(compiled,
code_start,reloc_start,
literal_start,words_start);
}
iterate_code_heap_step((F_COMPILED *)(scan + 1),iter);
scan = next_block(&compiling,scan);
}
}
@ -156,8 +154,6 @@ void finalize_code_block(F_COMPILED *relocating, CELL code_start,
{
CELL words_end = words_start + relocating->words_length;
if(!relocating->finalized)
{
CELL scan;
for(scan = words_start; scan < words_end; scan += CELLS)
@ -167,7 +163,8 @@ void finalize_code_block(F_COMPILED *relocating, CELL code_start,
relocate_code_block(relocating,code_start,reloc_start,
literal_start,words_start);
}
flush_icache(code_start,reloc_start - code_start);
}
void collect_literals_step(F_COMPILED *relocating, CELL code_start,
@ -278,6 +275,8 @@ void primitive_add_compiled_block(void)
void primitive_finalize_compile(void)
{
F_ARRAY *array = untag_array(dpop());
/* set word XT's */
CELL count = untag_fixnum_fast(array->capacity);
CELL i;
for(i = 0; i < count; i++)
@ -287,8 +286,13 @@ void primitive_finalize_compile(void)
word->xt = to_cell(get(AREF(pair,1)));
}
iterate_code_heap(finalize_code_block);
flush_icache(compiling.base,compiling.limit - compiling.base);
/* perform relocation */
for(i = 0; i < count; i++)
{
F_ARRAY *pair = untag_array(get(AREF(array,i)));
CELL xt = to_cell(get(AREF(pair,1)));
iterate_code_heap_step((F_COMPILED*)xt - 1,finalize_code_block);
}
}
void primitive_code_room(void)

2
vm/compiler.h
View File

@ -58,8 +58,6 @@ typedef struct {
void relocate_code_block(F_COMPILED *relocating, CELL code_start,
CELL reloc_start, CELL literal_start, CELL words_start);
void finalize_code_block(F_COMPILED *relocating, CELL code_start,
CELL reloc_start, CELL literal_start, CELL words_start);
void collect_literals(void);
void init_compiler(CELL size);
void primitive_add_compiled_block(void);