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u3: refactors _ce_loom_blit_north(), replacing loop with a single read

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This commit is contained in:
Joe Bryan 2022-11-03 00:30:31 -04:00
parent 0959bb60f3
commit 0682cc2864
1 changed files with 3 additions and 8 deletions
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11
pkg/urbit/noun/events.c
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@ -754,16 +754,11 @@ _ce_patch_apply(u3_ce_patch* pat_u)
static void
_ce_loom_blit_north(c3_i fid_i, c3_w pgs_w)
{
c3_w i_w;
c3_w* ptr_w;
size_t off_i;
size_t len_i = (size_t)pgs_w << (u3a_page + 2);
ssize_t ret_i;
for ( i_w = 0; i_w < pgs_w; i_w++ ) {
off_i = (size_t)i_w << (u3a_page + 2);
ptr_w = u3_Loom + (i_w << u3a_page);
if ( pag_siz_i != (ret_i = c3_pread(fid_i, ptr_w, pag_siz_i, off_i)) ) {
if ( pgs_w ) {
if ( len_i != (ret_i = c3_pread(fid_i, u3_Loom, len_i, 0)) ) {
if ( 0 < ret_i ) {
fprintf(stderr, "loom: blit north partial read: %zu\r\n",
(size_t)ret_i);