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records/structs are an iota faster to collect.

This commit is contained in:
Abdulaziz Ghuloum 2007-11-21 16:39:16 -05:00
parent eb30e7ab58
commit 91c365d9a6
3 changed files with 3365 additions and 14 deletions
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3326
benchmarks/timelog
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2
scheme/last-revision
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@ -1 +1 @@
1102
1103

45
src/ikarus-collect.c
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@ -1233,21 +1233,46 @@ add_object_proc(gc_t* gc, ikp x)
return y;
}
else if(tagof(fst) == rtd_tag){
/* record */
/* struct / record */
int size = (int) ref(fst, off_rtd_length);
if(size > 4096){
fprintf(stderr, "large rec size=0x%08x\n", size);
if(size & ((1<<align_shift)-1)) {
/* size = n * object_alignment + 4 =>
memreq = n * object_alignment + 8
= (n+1) * object_alignment => aligned */
ikp y = gc_alloc_new_ptr(size+wordsize, gen, gc) + vector_tag;
ref(y, -vector_tag) = fst;
{
int i;
ikp p = y+disp_record_data-vector_tag;
ikp q = x+disp_record_data-vector_tag;
ref(p, 0) = ref(q, 0);
for(i=wordsize; i<size; i+=(2*wordsize)){
ref(p, i) = ref(q, i);
ref(p, i+wordsize) = ref(q, i+wordsize);
}
}
int memreq = align(size + disp_record_data);
ikp y = gc_alloc_new_ptr(memreq, gen, gc) + vector_tag;
ref(y, memreq-vector_tag-wordsize) = 0;
memcpy(y-vector_tag, x-vector_tag, size+wordsize);
ref(x,-vector_tag) = forward_ptr;
ref(x,wordsize-vector_tag) = y;
#if accounting
record_count++;
#endif
return y;
} else {
/* size = n * object_alignment =>
memreq = n * object_alignment + 4 + 4 (pad) */
ikp y = gc_alloc_new_ptr(size+(2*wordsize), gen, gc) + vector_tag;
ref(y, -vector_tag) = fst;
{
int i;
ikp p = y+disp_record_data-vector_tag;
ikp q = x+disp_record_data-vector_tag;
for(i=0; i<size; i+=(2*wordsize)){
ref(p, i) = ref(q, i);
ref(p, i+wordsize) = ref(q, i+wordsize);
}
}
ref(y, size+disp_record_data-vector_tag) = 0;
ref(x,-vector_tag) = forward_ptr;
ref(x,wordsize-vector_tag) = y;
return y;
}
}
else if(fst == code_tag){
ikp entry = x + off_code_data;