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shada: Allocate all hashes on stack

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This commit is contained in:
ZyX
2015-08-08 20:41:39 +03:00
parent fd4d5521a3
commit bcdda63e3a
2 changed files with 45 additions and 53 deletions
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15
src/nvim/lib/khash.h
View File

@@ -653,4 +653,19 @@ typedef const char *kh_cstr_t;
*/
#define KHASH_MAP_INIT_STR(name, khval_t) \
KHASH_INIT(name, kh_cstr_t, khval_t, 1, kh_str_hash_func, kh_str_hash_equal)
/*! @function
@abstract Return a literal for an empty hash table.
@param name Name of the hash table [symbol]
*/
#define KHASH_EMPTY_TABLE(name) \
((kh_##name##_t) { \
.n_buckets = 0, \
.size = 0, \
.n_occupied = 0, \
.upper_bound = 0, \
.flags = NULL, \
.keys = NULL, \
.vals = NULL, \
})
#endif /* __AC_KHASH_H */

73
src/nvim/shada.c
View File

@@ -862,15 +862,6 @@ static inline bool in_strset(const khash_t(strset) *const set, char *str)
return kh_get(strset, set, str) != kh_end(set);
}
/// Check whether buffer is on removable media
///
/// Uses pre-populated set with buffers on removable media named removable_bufs.
///
/// @param[in] buf Buffer to check.
///
/// @return true or false.
#define SHADA_REMOVABLE(buf) in_bufset(removable_bufs, buf)
/// Msgpack callback for writing to ShaDaWriteDef*
static int msgpack_sd_writer_write(void *data, const char *buf, size_t len)
{
@@ -1195,24 +1186,13 @@ static void shada_read(ShaDaReadDef *const sd_reader, const int flags)
}
}
ShadaEntry cur_entry;
khash_t(bufset) *cl_bufs = NULL;
if (srni_flags & kSDReadChanges) {
cl_bufs = kh_init(bufset);
}
khash_t(fnamebufs) *fname_bufs = NULL;
if (srni_flags & (kSDReadUndisableableData
| kSDReadChanges
| kSDReadLocalMarks)) {
fname_bufs = kh_init(fnamebufs);
}
khash_t(strset) *oldfiles_set = NULL;
if (get_old_files) {
oldfiles_set = kh_init(strset);
if (oldfiles_list == NULL) {
khash_t(bufset) cl_bufs = KHASH_EMPTY_TABLE(bufset);
khash_t(fnamebufs) fname_bufs = KHASH_EMPTY_TABLE(fnamebufs);
khash_t(strset) oldfiles_set = KHASH_EMPTY_TABLE(strset);
if (get_old_files && oldfiles_list == NULL) {
oldfiles_list = list_alloc();
set_vim_var_list(VV_OLDFILES, oldfiles_list);
}
}
ShaDaReadResult srni_ret;
while ((srni_ret = shada_read_next_item(sd_reader, &cur_entry, srni_flags, 0))
!= kSDReadStatusFinished) {
@@ -1334,7 +1314,7 @@ static void shada_read(ShaDaReadDef *const sd_reader, const int flags)
}
case kSDItemJump:
case kSDItemGlobalMark: {
buf_T *buf = find_buffer(fname_bufs, cur_entry.data.filemark.fname);
buf_T *buf = find_buffer(&fname_bufs, cur_entry.data.filemark.fname);
if (buf != NULL) {
xfree(cur_entry.data.filemark.fname);
cur_entry.data.filemark.fname = NULL;
@@ -1444,8 +1424,8 @@ static void shada_read(ShaDaReadDef *const sd_reader, const int flags)
}
case kSDItemChange:
case kSDItemLocalMark: {
if (oldfiles_set != NULL
&& !in_strset(oldfiles_set, cur_entry.data.filemark.fname)) {
if (get_old_files && !in_strset(&oldfiles_set,
cur_entry.data.filemark.fname)) {
char *fname = cur_entry.data.filemark.fname;
if (want_marks) {
// Do not bother with allocating memory for the string if already
@@ -1454,7 +1434,7 @@ static void shada_read(ShaDaReadDef *const sd_reader, const int flags)
fname = xstrdup(fname);
}
int kh_ret;
(void) kh_put(strset, oldfiles_set, fname, &kh_ret);
(void) kh_put(strset, &oldfiles_set, fname, &kh_ret);
list_append_allocated_string(oldfiles_list, fname);
if (!want_marks) {
// Avoid free because this string was already used.
@@ -1465,7 +1445,7 @@ static void shada_read(ShaDaReadDef *const sd_reader, const int flags)
shada_free_shada_entry(&cur_entry);
break;
}
buf_T *buf = find_buffer(fname_bufs, cur_entry.data.filemark.fname);
buf_T *buf = find_buffer(&fname_bufs, cur_entry.data.filemark.fname);
if (buf == NULL) {
shada_free_shada_entry(&cur_entry);
break;
@@ -1483,7 +1463,7 @@ static void shada_read(ShaDaReadDef *const sd_reader, const int flags)
}
} else {
int kh_ret;
(void) kh_put(bufset, cl_bufs, (uintptr_t) buf, &kh_ret);
(void) kh_put(bufset, &cl_bufs, (uintptr_t) buf, &kh_ret);
if (force) {
if (buf->b_changelistlen == JUMPLISTSIZE) {
free_fmark(buf->b_changelist[0]);
@@ -1562,25 +1542,21 @@ shada_read_main_cycle_end:
hms_dealloc(&hms[i]);
}
}
if (cl_bufs != NULL) {
if (cl_bufs.n_occupied) {
FOR_ALL_TAB_WINDOWS(tp, wp) {
(void) tp;
if (in_bufset(cl_bufs, wp->w_buffer)) {
if (in_bufset(&cl_bufs, wp->w_buffer)) {
wp->w_changelistidx = wp->w_buffer->b_changelistlen;
}
}
kh_destroy(bufset, cl_bufs);
}
if (fname_bufs != NULL) {
kh_dealloc(bufset, &cl_bufs);
const char *key;
kh_foreach_key(fname_bufs, key, {
kh_foreach_key(&fname_bufs, key, {
xfree((void *) key);
})
kh_destroy(fnamebufs, fname_bufs);
}
if (oldfiles_set != NULL) {
kh_destroy(strset, oldfiles_set);
}
kh_dealloc(fnamebufs, &fname_bufs);
kh_dealloc(strset, &oldfiles_set);
}
/// Get the ShaDa file name to use
@@ -2181,7 +2157,7 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
}
const bool limit_reg_lines = max_reg_lines >= 0;
const bool dump_registers = (max_reg_lines != 0);
khash_t(bufset) *const removable_bufs = kh_init(bufset);
khash_t(bufset) removable_bufs = KHASH_EMPTY_TABLE(bufset);
const size_t max_kbyte = (size_t) max_kbyte_i;
const size_t num_marked_files = (size_t) get_shada_parameter('\'');
const bool dump_global_marks = get_shada_parameter('f') != 0;
@@ -2218,7 +2194,7 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
FOR_ALL_BUFFERS(buf) {
if (buf->b_ffname != NULL && shada_removable((char *) buf->b_ffname)) {
int kh_ret;
(void) kh_put(bufset, removable_bufs, (uintptr_t) buf, &kh_ret);
(void) kh_put(bufset, &removable_bufs, (uintptr_t) buf, &kh_ret);
}
}
@@ -2251,7 +2227,7 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
if (find_shada_parameter('%') != NULL) {
size_t buf_count = 0;
FOR_ALL_BUFFERS(buf) {
if (buf->b_ffname != NULL && !SHADA_REMOVABLE(buf)) {
if (buf->b_ffname != NULL && !in_bufset(&removable_bufs, buf)) {
buf_count++;
}
}
@@ -2269,7 +2245,7 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
};
size_t i = 0;
FOR_ALL_BUFFERS(buf) {
if (buf->b_ffname == NULL || SHADA_REMOVABLE(buf)) {
if (buf->b_ffname == NULL || in_bufset(&removable_bufs, buf)) {
continue;
}
buflist_entry.data.buffer_list.buffers[i] = (struct buffer_list_buffer) {
@@ -2410,7 +2386,7 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
? NULL
: buflist_findnr(fm.fmark.fnum));
if (buf != NULL
? SHADA_REMOVABLE(buf)
? in_bufset(&removable_bufs, buf)
: fm.fmark.fnum != 0) {
continue;
}
@@ -2458,7 +2434,8 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
fname = (const char *) fm.fname;
} else {
const buf_T *const buf = buflist_findnr(fm.fmark.fnum);
if (buf == NULL || buf->b_ffname == NULL || SHADA_REMOVABLE(buf)) {
if (buf == NULL || buf->b_ffname == NULL
|| in_bufset(&removable_bufs, buf)) {
continue;
}
fname = (const char *) buf->b_ffname;
@@ -2517,7 +2494,7 @@ static ShaDaWriteResult shada_write(ShaDaWriteDef *const sd_writer,
// Initialize buffers
if (num_marked_files > 0) {
FOR_ALL_BUFFERS(buf) {
if (buf->b_ffname == NULL || SHADA_REMOVABLE(buf)) {
if (buf->b_ffname == NULL || in_bufset(&removable_bufs, buf)) {
continue;
}
const void *local_marks_iter = NULL;
@@ -2927,7 +2904,7 @@ shada_write_main_cycle_end:
shada_write_exit:
kh_dealloc(file_marks, &wms->file_marks);
kh_destroy(bufset, removable_bufs);
kh_dealloc(bufset, &removable_bufs);
msgpack_packer_free(packer);
kh_dealloc(strset, &wms->dumped_variables);
xfree(wms);