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Tweaked bshrub/bsprout compact code for consistency

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These now take, and use, the staging portion of the bshrub/bsprout. No
more hacky casts.

In theory this risks increasing RAM cost, but it's fortunately not on
the hot-path:

            code          stack
  before:  33380           2984
  after:   33368 (-0.0%)   2984 (+0.0%)
This commit is contained in:
Christopher Haster
2024-01-08 14:53:42 -06:00
parent fa1e7bb98e
commit f209c95dad
1 changed files with 40 additions and 51 deletions
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lfs.c
+40 -51
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@@ -5109,10 +5109,9 @@ static lfs_ssize_t lfsr_bsprout_estimate__(lfs_t *lfs,
static lfs_ssize_t lfsr_bshrub_estimate__(lfs_t *lfs,
const lfsr_bshrub_t *bshrub);
static int lfsr_bsprout_compact__(lfs_t *lfs, lfsr_rbyd_t *rbyd_,
const lfsr_bsprout_t *bsprout, bool shrub);
lfsr_bsprout_t *bsprout, bool shrub);
static int lfsr_bshrub_compact__(lfs_t *lfs, lfsr_rbyd_t *rbyd_,
const lfsr_bshrub_t *bshrub, bool shrub,
lfsr_rbyd_t *shrub_);
lfsr_bshrub_t *bshrub);
// some mdir-related gstate things we need
static void lfsr_fs_flushgdelta(lfs_t *lfs) {
@@ -5284,17 +5283,15 @@ static int lfsr_mdir_commit__(lfs_t *lfs, lfsr_mdir_t *mdir,
// special case for bshrubs, we need to copy these over
if (tag == LFSR_TAG_BSHRUB) {
lfsr_rbyd_t shrub;
lfsr_bshrub_t bshrub;
err = lfsr_data_readshrub(lfs, &data, mdir__,
&shrub);
&bshrub.rbyd);
if (err) {
return err;
}
// compact our bshrub
err = lfsr_bshrub_compact__(lfs, &rbyd_,
(const lfsr_bshrub_t*)&shrub, false,
&shrub);
err = lfsr_bshrub_compact__(lfs, &rbyd_, &bshrub);
if (err) {
return err;
}
@@ -5304,7 +5301,7 @@ static int lfsr_mdir_commit__(lfs_t *lfs, lfsr_mdir_t *mdir,
err = lfsr_rbyd_appendattr(lfs, &rbyd_,
rid - lfs_smax32(start_rid, 0),
LFSR_TAG_BSHRUB, 0, lfsr_data_fromshrub(
&shrub, shrub_buf));
&bshrub.rbyd_, shrub_buf));
if (err) {
return err;
}
@@ -5594,7 +5591,7 @@ static int lfsr_mdir_compact__(lfs_t *lfs, lfsr_mdir_t *mdir_,
if (tag == LFSR_TAG_DATA) {
LFS_ASSERT(weight == 0);
err = lfsr_bsprout_compact__(lfs, &mdir_->rbyd,
(const lfsr_bsprout_t*)&data, false);
&(lfsr_bsprout_t){.data=data}, false);
if (err) {
LFS_ASSERT(err != LFS_ERR_RANGE);
return err;
@@ -5603,17 +5600,15 @@ static int lfsr_mdir_compact__(lfs_t *lfs, lfsr_mdir_t *mdir_,
// found an inlined shrub? we need to compact the shrub as well to
// bring it along with us
} else if (tag == LFSR_TAG_BSHRUB) {
lfsr_rbyd_t shrub;
lfsr_bshrub_t bshrub;
err = lfsr_data_readshrub(lfs, &data, mdir,
&shrub);
&bshrub.rbyd);
if (err) {
return err;
}
// compact our shrub
err = lfsr_bshrub_compact__(lfs, &mdir_->rbyd,
(const lfsr_bshrub_t*)&shrub, false,
&shrub);
err = lfsr_bshrub_compact__(lfs, &mdir_->rbyd, &bshrub);
if (err) {
LFS_ASSERT(err != LFS_ERR_RANGE);
return err;
@@ -5623,7 +5618,7 @@ static int lfsr_mdir_compact__(lfs_t *lfs, lfsr_mdir_t *mdir_,
uint8_t shrub_buf[LFSR_SHRUB_DSIZE];
err = lfsr_rbyd_appendcompactattr(lfs, &mdir_->rbyd,
tag, weight, lfsr_data_fromshrub(
&shrub,
&bshrub.rbyd_,
shrub_buf));
if (err) {
LFS_ASSERT(err != LFS_ERR_RANGE);
@@ -5662,7 +5657,10 @@ static int lfsr_mdir_compact__(lfs_t *lfs, lfsr_mdir_t *mdir_,
}
// inlined sprout?
if (lfsr_ftree_isbsprout(&file->mdir, &file->ftree)) {
if (lfsr_ftree_isbsprout(&file->mdir, &file->ftree)
// only compact once, first compact should stage the new block
&& file->ftree.u.bsprout.data_.u.disk.block
!= mdir_->rbyd.blocks[0]) {
err = lfsr_bsprout_compact__(lfs, &mdir_->rbyd,
&file->ftree.u.bsprout, true);
if (err) {
@@ -5671,10 +5669,12 @@ static int lfsr_mdir_compact__(lfs_t *lfs, lfsr_mdir_t *mdir_,
}
// inlined shrub?
} else if (lfsr_ftree_isbshrub(&file->mdir, &file->ftree)) {
} else if (lfsr_ftree_isbshrub(&file->mdir, &file->ftree)
// only compact once, first compact should stage the new block
&& file->ftree.u.bshrub.rbyd_.blocks[0]
!= mdir_->rbyd.blocks[0]) {
err = lfsr_bshrub_compact__(lfs, &mdir_->rbyd,
&file->ftree.u.bshrub, true,
NULL);
&file->ftree.u.bshrub);
if (err) {
LFS_ASSERT(err != LFS_ERR_RANGE);
return err;
@@ -6873,20 +6873,22 @@ static lfs_ssize_t lfsr_bsprout_estimate__(lfs_t *lfs,
}
static int lfsr_bsprout_compact__(lfs_t *lfs, lfsr_rbyd_t *rbyd_,
const lfsr_bsprout_t *bsprout, bool shrub) {
// only compact once, first compact should stage the new block
if (shrub && bsprout->data_.u.disk.block == rbyd_->blocks[0]) {
return 0;
}
lfsr_bsprout_t *bsprout, bool orphan) {
// write out bsprout
int err = lfsr_rbyd_appendcompactattr(lfs, rbyd_,
(shrub) ? LFSR_TAG_SHRUB(DATA) : LFSR_TAG_DATA, 0,
(orphan) ? LFSR_TAG_SHRUB(DATA) : LFSR_TAG_DATA, 0,
bsprout->data);
if (err) {
return err;
}
// this is a bit tricky since we don't know the tag size,
// but we have just enough info
bsprout->data_ = LFSR_DATA_DISK(
rbyd_->blocks[0],
rbyd_->eoff - lfsr_bsprout_size(bsprout),
lfsr_bsprout_size(bsprout));
// stage any opened inlined files with their new location so we
// can update these later if our commit is a success
for (lfsr_openedmdir_t *opened = lfs->opened[
@@ -6896,12 +6898,7 @@ static int lfsr_bsprout_compact__(lfs_t *lfs, lfsr_rbyd_t *rbyd_,
lfsr_file_t *file = (lfsr_file_t*)opened;
if (lfsr_ftree_isbsprout(&file->mdir, &file->ftree)
&& lfsr_bsprout_cmp(&file->ftree.u.bsprout, bsprout) == 0) {
// this is a bit tricky since we don't know the tag size,
// but we have just enough info
file->ftree.u.bsprout.data_ = LFSR_DATA_DISK(
rbyd_->blocks[0],
rbyd_->eoff - lfsr_bsprout_size(bsprout),
lfsr_bsprout_size(bsprout));
file->ftree.u.bsprout.data_ = bsprout->data_;
}
}
@@ -6956,24 +6953,24 @@ static lfs_ssize_t lfsr_bshrub_estimate__(lfs_t *lfs,
}
static int lfsr_bshrub_compact__(lfs_t *lfs, lfsr_rbyd_t *rbyd_,
const lfsr_bshrub_t *bshrub, bool shrub,
lfsr_rbyd_t *shrub_) {
// only compact once, first compact should stage the new block
if (shrub && bshrub->rbyd_.blocks[0] == rbyd_->blocks[0]) {
return 0;
}
lfsr_bshrub_t *bshrub) {
// save our current trunk/weight
lfs_size_t trunk = rbyd_->trunk;
lfsr_srid_t weight = rbyd_->weight;
// compact our bshrub
int err = lfsr_rbyd_appendshrub(lfs, rbyd_,
&bshrub->rbyd);
int err = lfsr_rbyd_appendshrub(lfs, rbyd_, &bshrub->rbyd);
if (err) {
return err;
}
// revert rbyd trunk/weight
bshrub->rbyd_.blocks[0] = rbyd_->blocks[0];
bshrub->rbyd_.trunk = rbyd_->trunk;
bshrub->rbyd_.weight = rbyd_->weight;
rbyd_->trunk = trunk;
rbyd_->weight = weight;
// stage any opened shrubs with their new location so we can
// update these later if our commit is a success
//
@@ -6985,17 +6982,9 @@ static int lfsr_bshrub_compact__(lfs_t *lfs, lfsr_rbyd_t *rbyd_,
lfsr_file_t *file = (lfsr_file_t*)opened;
if (lfsr_ftree_isbshrub(&file->mdir, &file->ftree)
&& lfsr_bshrub_cmp(&file->ftree.u.bshrub, bshrub) == 0) {
file->ftree.u.bshrub.rbyd_ = *rbyd_;
file->ftree.u.bshrub.rbyd_ = bshrub->rbyd_;
}
}
// revert rbyd trunk/weight
if (shrub_) {
shrub_->trunk = rbyd_->trunk;
shrub_->weight = rbyd_->weight;
}
rbyd_->trunk = trunk;
rbyd_->weight = weight;
return 0;
}