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Merge pull request #34217 from bfredl/shadajump

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refactor(shada): expand macros taking macros and code fragments
This commit is contained in:
bfredl
2025-06-09 09:54:30 +02:00
committed by GitHub
parent f2e60d000e 680d3770b1
commit 811e12cebc
1 changed files with 138 additions and 100 deletions
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236
src/nvim/shada.c
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@@ -877,51 +877,38 @@ static inline bool marks_equal(const pos_T a, const pos_T b)
return (a.lnum == b.lnum) && (a.col == b.col);
}
#define MERGE_JUMPS(jumps_size, jumps, jumps_type, timestamp_attr, mark_attr, \
entry, fname_cond, free_func, fin_func, \
idxadj_func, afterfree_func) \
do { \
const int jl_len = (int)(jumps_size); \
int i; \
for (i = jl_len; i > 0; i--) { \
const jumps_type jl_entry = (jumps)[i - 1]; \
if (jl_entry.timestamp_attr <= (entry).timestamp) { \
if (marks_equal(jl_entry.mark_attr, (entry).data.filemark.mark) \
&& (fname_cond)) { \
i = -1; \
} \
break; \
} \
} \
if (i > 0) { \
if (jl_len == JUMPLISTSIZE) { \
free_func((jumps)[0]); \
i--; \
if (i > 0) { \
memmove(&(jumps)[0], &(jumps)[1], sizeof((jumps)[1]) * (size_t)i); \
} \
} else if (i != jl_len) { \
memmove(&(jumps)[i + 1], &(jumps)[i], \
sizeof((jumps)[0]) * (size_t)(jl_len - i)); \
} \
} else if (i == 0) { \
if (jl_len == JUMPLISTSIZE) { \
i = -1; \
} else if (jl_len > 0) { \
memmove(&(jumps)[1], &(jumps)[0], sizeof((jumps)[0]) * (size_t)jl_len); \
} \
} \
if (i != -1) { \
(jumps)[i] = fin_func(entry); \
if (jl_len < JUMPLISTSIZE) { \
(jumps_size)++; \
} \
idxadj_func(i); \
} else { \
shada_free_shada_entry(&(entry)); \
afterfree_func(entry); \
} \
} while (0)
/// adjust "jumps_arr" to make space to insert an item just before the item at "i"
/// (or after the last if i == jl_len)
///
/// Higher incidies indicate newer items. If the list is full, discard the oldest item
/// (or don't insert the considered item if it is older)
///
/// @return the actual position a new item should be inserted or -1 if it shouldn't be inserted
static int marklist_insert(void *jumps_arr, size_t jump_size, int jl_len, int i)
{
char *jumps = (char *)jumps_arr; // for pointer maffs
if (i > 0) {
if (jl_len == JUMPLISTSIZE) {
i--;
if (i > 0) {
// delete oldest item to make room for new element
memmove(jumps, jumps + jump_size, jump_size * (size_t)i);
}
} else if (i != jl_len) {
// insert at position i, move newer items out of the way
memmove(jumps + (size_t)(i + 1) * jump_size, jumps + (size_t)i * jump_size,
jump_size * (size_t)(jl_len - i));
}
} else if (i == 0) {
if (jl_len == JUMPLISTSIZE) {
return -1; // don't insert, older than the entire list
} else if (jl_len > 0) {
// insert i as the oldest item
memmove(jumps + jump_size, jumps, jump_size * (size_t)jl_len);
}
}
return i;
}
/// Read data from ShaDa file
///
@@ -1122,24 +1109,38 @@ static void shada_read(FileDescriptor *const sd_reader, const int flags)
break;
}
} else {
#define SDE_TO_XFMARK(entry) fm
#define ADJUST_IDX(i) \
if (curwin->w_jumplistidx >= (i) \
&& curwin->w_jumplistidx + 1 <= curwin->w_jumplistlen) { \
curwin->w_jumplistidx++; \
int i;
for (i = curwin->w_jumplistlen; i > 0; i--) {
const xfmark_T jl_entry = curwin->w_jumplist[i - 1];
if (jl_entry.fmark.timestamp <= cur_entry.timestamp) {
if (marks_equal(jl_entry.fmark.mark, cur_entry.data.filemark.mark)
&& (buf == NULL
? (jl_entry.fname != NULL && strcmp(fm.fname, jl_entry.fname) == 0)
: fm.fmark.fnum == jl_entry.fmark.fnum)) {
i = -1;
}
#define DUMMY_AFTERFREE(entry)
MERGE_JUMPS(curwin->w_jumplistlen, curwin->w_jumplist, xfmark_T,
fmark.timestamp, fmark.mark, cur_entry,
(buf == NULL
? (jl_entry.fname != NULL
&& strcmp(fm.fname, jl_entry.fname) == 0)
: fm.fmark.fnum == jl_entry.fmark.fnum),
free_xfmark, SDE_TO_XFMARK, ADJUST_IDX, DUMMY_AFTERFREE);
#undef SDE_TO_XFMARK
#undef ADJUST_IDX
#undef DUMMY_AFTERFREE
break;
}
}
if (i > 0 && curwin->w_jumplistlen == JUMPLISTSIZE) {
free_xfmark(curwin->w_jumplist[0]);
}
i = marklist_insert(curwin->w_jumplist, sizeof(*curwin->w_jumplist),
curwin->w_jumplistlen, i);
if (i != -1) {
curwin->w_jumplist[i] = fm;
if (curwin->w_jumplistlen < JUMPLISTSIZE) {
curwin->w_jumplistlen++;
}
if (curwin->w_jumplistidx >= i && curwin->w_jumplistidx + 1 <= curwin->w_jumplistlen) {
curwin->w_jumplistidx++;
}
} else {
shada_free_shada_entry(&cur_entry);
}
}
// Do not free shada entry: its allocated memory was saved above.
break;
}
@@ -1203,18 +1204,30 @@ static void shada_read(FileDescriptor *const sd_reader, const int flags)
}
} else {
set_put(ptr_t, &cl_bufs, buf);
#define SDE_TO_FMARK(entry) fm
#define AFTERFREE(entry) (entry).data.filemark.fname = NULL
#define DUMMY_IDX_ADJ(i)
MERGE_JUMPS(buf->b_changelistlen, buf->b_changelist, fmark_T,
timestamp, mark, cur_entry, true,
free_fmark, SDE_TO_FMARK, DUMMY_IDX_ADJ, AFTERFREE);
#undef SDE_TO_FMARK
#undef AFTERFREE
#undef DUMMY_IDX_ADJ
int i;
for (i = buf->b_changelistlen; i > 0; i--) {
const fmark_T jl_entry = buf->b_changelist[i - 1];
if (jl_entry.timestamp <= cur_entry.timestamp) {
if (marks_equal(jl_entry.mark, cur_entry.data.filemark.mark)) {
i = -1;
}
// Do not free shada entry: except for fname, its allocated memory (i.e.
// additional_data attribute contents if non-NULL) was saved above.
break;
}
}
if (i > 0 && buf->b_changelistlen == JUMPLISTSIZE) {
free_fmark(buf->b_changelist[0]);
}
i = marklist_insert(buf->b_changelist, sizeof(*buf->b_changelist), buf->b_changelistlen, i);
if (i != -1) {
buf->b_changelist[i] = fm;
if (buf->b_changelistlen < JUMPLISTSIZE) {
buf->b_changelistlen++;
}
} else {
xfree(fm.additional_data);
}
}
// only free fname part of shada entry, as additional_data was saved or freed above.
xfree(cur_entry.data.filemark.fname);
break;
}
@@ -1761,16 +1774,6 @@ static inline ShaDaWriteResult shada_read_when_writing(FileDescriptor *const sd_
*wms_entry = pfs_entry; \
} while (0)
#define FREE_POSSIBLY_FREED_SHADA_ENTRY(entry) \
do { \
if ((entry).can_free_entry) { \
shada_free_shada_entry(&(entry).data); \
} \
} while (0)
#define SDE_TO_PFSDE(entry) \
((PossiblyFreedShadaEntry) { .can_free_entry = true, .data = (entry) })
while ((srni_ret = shada_read_next_item(sd_reader, &entry, srni_flags,
max_kbyte))
!= kSDReadStatusFinished) {
@@ -1952,27 +1955,62 @@ static inline ShaDaWriteResult shada_read_when_writing(FileDescriptor *const sd_
}
}
} else {
#define AFTERFREE_DUMMY(entry)
#define DUMMY_IDX_ADJ(i)
MERGE_JUMPS(filemarks->changes_size, filemarks->changes,
PossiblyFreedShadaEntry, data.timestamp,
data.data.filemark.mark, entry, true,
FREE_POSSIBLY_FREED_SHADA_ENTRY, SDE_TO_PFSDE,
DUMMY_IDX_ADJ, AFTERFREE_DUMMY);
int i;
for (i = (int)filemarks->changes_size; i > 0; i--) {
const PossiblyFreedShadaEntry jl_entry = filemarks->changes[i - 1];
if (jl_entry.data.timestamp <= (entry).timestamp) {
if (marks_equal(jl_entry.data.data.filemark.mark, entry.data.filemark.mark)) {
i = -1;
}
break;
}
}
if (i > 0 && filemarks->changes_size == JUMPLISTSIZE) {
if (filemarks->changes[0].can_free_entry) {
shada_free_shada_entry(&filemarks->changes[0].data);
}
}
i = marklist_insert(filemarks->changes, sizeof(*filemarks->changes),
(int)filemarks->changes_size, i);
if (i != -1) {
filemarks->changes[i] = (PossiblyFreedShadaEntry) { .can_free_entry = true,
.data = entry };
if (filemarks->changes_size < JUMPLISTSIZE) {
filemarks->changes_size++;
}
} else {
shada_free_shada_entry(&(entry));
}
}
break;
}
case kSDItemJump:
MERGE_JUMPS(wms->jumps_size, wms->jumps, PossiblyFreedShadaEntry,
data.timestamp, data.data.filemark.mark, entry,
strcmp(jl_entry.data.data.filemark.fname,
entry.data.filemark.fname) == 0,
FREE_POSSIBLY_FREED_SHADA_ENTRY, SDE_TO_PFSDE,
DUMMY_IDX_ADJ, AFTERFREE_DUMMY);
#undef FREE_POSSIBLY_FREED_SHADA_ENTRY
#undef SDE_TO_PFSDE
#undef DUMMY_IDX_ADJ
#undef AFTERFREE_DUMMY
;
int i;
for (i = (int)wms->jumps_size; i > 0; i--) {
const PossiblyFreedShadaEntry jl_entry = wms->jumps[i - 1];
if (jl_entry.data.timestamp <= entry.timestamp) {
if (marks_equal(jl_entry.data.data.filemark.mark, entry.data.filemark.mark)
&& strcmp(jl_entry.data.data.filemark.fname, entry.data.filemark.fname) == 0) {
i = -1;
}
break;
}
}
if (i > 0 && wms->jumps_size == JUMPLISTSIZE) {
if (wms->jumps[0].can_free_entry) {
shada_free_shada_entry(&wms->jumps[0].data);
}
}
i = marklist_insert(wms->jumps, sizeof(*wms->jumps), (int)wms->jumps_size, i);
if (i != -1) {
wms->jumps[i] = (PossiblyFreedShadaEntry) { .can_free_entry = true, .data = entry };
if (wms->jumps_size < JUMPLISTSIZE) {
wms->jumps_size++;
}
} else {
shada_free_shada_entry(&(entry));
}
break;
}
}