Chiebot-Mirror
/
protobuf
mirror of https://github.com/protocolbuffers/protobuf.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

Stored mask in the table pointer.

Browse Source
pull/13171/head
Joshua Haberman 4 years ago
parent a6dc88556d
commit 8ed6b2fe85
5 changed files with 31 additions and 27 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 7
      upb/decode.c
  2. 2
      upb/decode.int.h
  3. 34
      upb/decode_fast.c
  4. 10
      upb/decode_fast.h
  5. 5
      upb/msg.h

7
upb/decode.c
Unescape View File

@ -613,13 +613,13 @@ static decode_parseret decode_field(upb_decstate *d, const char *ptr,
UPB_NOINLINE
const char *fastdecode_generic(upb_decstate *d, const char *ptr, upb_msg *msg,
const upb_msglayout *table, uint64_t hasbits,
intptr_t table, uint64_t hasbits,
uint64_t data) {
decode_parseret ret;
*(uint32_t*)msg |= hasbits >> 16; /* Sync hasbits. */
(void)data;
if (ptr == d->limit) return ptr;
ret = decode_field(d, ptr, msg, table);
ret = decode_field(d, ptr, msg, (const upb_msglayout *)(table >> 8));
if (ret.group_end) return ptr;
return fastdecode_dispatch(d, ret.ptr, msg, table, hasbits);
}
@ -628,7 +628,8 @@ UPB_NOINLINE
static const char *decode_msg(upb_decstate *d, const char *ptr, upb_msg *msg,
const upb_msglayout *layout) {
if (msg) {
ptr = fastdecode_dispatch(d, ptr, msg, layout, 0);
ptr = fastdecode_dispatch(d, ptr, msg,
((intptr_t)layout << 8) | layout->table_mask, 0);
} else {
while (ptr < d->limit) {
decode_parseret ret = decode_field(d, ptr, msg, layout);

2
upb/decode.int.h
Unescape View File

@ -18,7 +18,7 @@ typedef struct upb_decstate {
} upb_decstate;
const char *fastdecode_dispatch(upb_decstate *d, const char *ptr, upb_msg *msg,
const upb_msglayout *table, uint64_t hasbits);
intptr_t table, uint64_t hasbits);
const char *fastdecode_err(upb_decstate *d);

34
upb/decode_fast.c
Unescape View File

@ -7,8 +7,8 @@
/* Must be last. */
#include "upb/port_def.inc"
#define UPB_PARSE_PARAMS \
upb_decstate *d, const char *ptr, upb_msg *msg, const upb_msglayout *table, \
#define UPB_PARSE_PARAMS \
upb_decstate *d, const char *ptr, upb_msg *msg, intptr_t table, \
uint64_t hasbits, uint64_t data
#define UPB_PARSE_ARGS d, ptr, msg, table, hasbits, data
@ -24,15 +24,17 @@ typedef enum {
} upb_card;
UPB_FORCEINLINE
const char *fastdecode_tag_dispatch(upb_decstate *d, const char *ptr, upb_msg *msg,
const upb_msglayout *table, uint64_t hasbits, uint32_t tag) {
const char *fastdecode_tag_dispatch(upb_decstate *d, const char *ptr,
upb_msg *msg, intptr_t table,
uint64_t hasbits, uint32_t tag) {
const upb_msglayout *table_p = (void*)(table >> 8);
uint8_t mask = table;
uint64_t data;
size_t idx;
idx = (tag & table->table_mask);
size_t idx = tag & mask;
__builtin_assume((idx & 7) == 0);
idx >>= 3;
data = table->fasttable[idx].field_data ^ tag;
return table->fasttable[idx].field_parser(UPB_PARSE_ARGS);
data = table_p->fasttable[idx].field_data ^ tag;
return table_p->fasttable[idx].field_parser(UPB_PARSE_ARGS);
}
UPB_FORCEINLINE
@ -42,9 +44,9 @@ uint32_t fastdecode_load_tag(const char* ptr) {
return tag;
}
UPB_NOINLINE
UPB_FORCEINLINE
const char *fastdecode_dispatch(upb_decstate *d, const char *ptr, upb_msg *msg,
const upb_msglayout *table, uint64_t hasbits) {
intptr_t table, uint64_t hasbits) {
if (UPB_UNLIKELY(ptr >= d->fastlimit)) {
if (UPB_LIKELY(ptr == d->limit)) {
*(uint32_t*)msg |= hasbits >> 16; /* Sync hasbits. */
@ -265,9 +267,9 @@ const char *upb_pos_2bt(UPB_PARSE_PARAMS) {
/* message fields *************************************************************/
UPB_NOINLINE static
const char *fastdecode_lendelim_submsg(upb_decstate *d, const char *ptr, upb_msg *msg,
const upb_msglayout *table, uint64_t hasbits, const char* saved_limit) {
UPB_NOINLINE static const char *fastdecode_lendelim_submsg(
upb_decstate *d, const char *ptr, upb_msg *msg, intptr_t table,
uint64_t hasbits, const char *saved_limit) {
size_t len = (uint8_t)ptr[-1];
if (UPB_UNLIKELY(len & 0x80)) {
int i;
@ -308,7 +310,9 @@ static const char *fastdecode_submsg(UPB_PARSE_PARAMS, int tagbytes,
void *end;
uint32_t submsg_idx = data;
submsg_idx >>= 16;
const upb_msglayout *subl = table->submsgs[submsg_idx];
const upb_msglayout *table_p = (void*)(table >> 8);
const upb_msglayout *subl = table_p->submsgs[submsg_idx];
intptr_t subt = (intptr_t)subl << 8 | subl->table_mask;
submsg = fastdecode_getfield_ofs(d, ptr, msg, &data, &hasbits, &arr, &end,
sizeof(upb_msg *), card, true);
@ -344,7 +348,7 @@ again:
ptr += tagbytes + 1;
ptr = fastdecode_lendelim_submsg(d, ptr, child, subl, 0, saved_limit);
ptr = fastdecode_lendelim_submsg(d, ptr, child, subt, 0, saved_limit);
if (UPB_UNLIKELY(ptr != d->limit || d->end_group != 0)) {
return fastdecode_err(d);

10
upb/decode_fast.h
Unescape View File

@ -7,12 +7,12 @@
struct upb_decstate;
const char *fastdecode_generic(struct upb_decstate *d, const char *ptr,
upb_msg *msg, const upb_msglayout *table,
uint64_t hasbits, uint64_t data);
upb_msg *msg, intptr_t table, uint64_t hasbits,
uint64_t data);
#define UPB_PARSE_PARAMS \
struct upb_decstate *d, const char *ptr, upb_msg *msg, \
const upb_msglayout *table, uint64_t hasbits, uint64_t data
#define UPB_PARSE_PARAMS \
struct upb_decstate *d, const char *ptr, upb_msg *msg, intptr_t table, \
uint64_t hasbits, uint64_t data
#define F(card, type, valbytes, tagbytes) \
const char *upb_p##card##type##valbytes##_##tagbytes##bt(UPB_PARSE_PARAMS);

5
upb/msg.h
Unescape View File

@ -50,8 +50,7 @@ struct upb_msglayout;
struct upb_decstate;
typedef const char *_upb_field_parser(struct upb_decstate *d, const char *ptr,
upb_msg *msg,
const struct upb_msglayout *table,
upb_msg *msg, intptr_t table,
uint64_t hasbits, uint64_t data);
typedef struct {
@ -62,7 +61,7 @@ typedef struct {
typedef struct upb_msglayout {
const struct upb_msglayout *const* submsgs;
const upb_msglayout_field *fields;
uint32_t table_mask;
uint8_t table_mask;
/* Must be aligned to sizeof(void*). Doesn't include internal members like
* unknown fields, extension dict, pointer to msglayout, etc. */
uint16_t size;

Write Preview
Loading…
Cancel
Save