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Merge pull request #19498 from arjunroy/hpack_parser_on_hdr_v2

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Codegen optimizations for hpack_parser on_hdr().
pull/18410/head
Arjun Roy 5 years ago committed by GitHub
parent ce282e7d7e 80d1aec021
commit 920bacf11d
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 44 additions and 52 deletions
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  1. 68
      src/core/ext/transport/chttp2/transport/hpack_parser.cc

68
src/core/ext/transport/chttp2/transport/hpack_parser.cc
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@ -622,10 +622,7 @@ static const uint8_t inverse_base64[256] = {
255,
};
/* emission helpers */
static grpc_error* on_hdr(grpc_chttp2_hpack_parser* p, grpc_mdelem md,
int add_to_table) {
if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
static void GPR_ATTRIBUTE_NOINLINE on_hdr_log(grpc_mdelem md) {
char* k = grpc_slice_to_c_string(GRPC_MDKEY(md));
char* v = nullptr;
if (grpc_is_binary_header_internal(GRPC_MDKEY(md))) {
@ -641,14 +638,21 @@ static grpc_error* on_hdr(grpc_chttp2_hpack_parser* p, grpc_mdelem md,
grpc_slice_is_interned(GRPC_MDVALUE(md)));
gpr_free(k);
gpr_free(v);
}
/* emission helpers */
template <bool do_add>
static grpc_error* on_hdr(grpc_chttp2_hpack_parser* p, grpc_mdelem md) {
if (GRPC_TRACE_FLAG_ENABLED(grpc_http_trace)) {
on_hdr_log(md);
}
if (add_to_table) {
GPR_ASSERT(GRPC_MDELEM_STORAGE(md) == GRPC_MDELEM_STORAGE_INTERNED ||
if (do_add) {
GPR_DEBUG_ASSERT(GRPC_MDELEM_STORAGE(md) == GRPC_MDELEM_STORAGE_INTERNED ||
GRPC_MDELEM_STORAGE(md) == GRPC_MDELEM_STORAGE_STATIC);
grpc_error* err = grpc_chttp2_hptbl_add(&p->table, md);
if (err != GRPC_ERROR_NONE) return err;
if (GPR_UNLIKELY(err != GRPC_ERROR_NONE)) return err;
}
if (p->on_header == nullptr) {
if (GPR_UNLIKELY(p->on_header == nullptr)) {
GRPC_MDELEM_UNREF(md);
return GRPC_ERROR_CREATE_FROM_STATIC_STRING("on_header callback not set");
}
@ -765,7 +769,7 @@ static grpc_error* finish_indexed_field(grpc_chttp2_hpack_parser* p,
}
GRPC_MDELEM_REF(md);
GRPC_STATS_INC_HPACK_RECV_INDEXED();
grpc_error* err = on_hdr(p, md, 0);
grpc_error* err = on_hdr<false>(p, md);
if (err != GRPC_ERROR_NONE) return err;
return parse_begin(p, cur, end);
}
@ -798,11 +802,9 @@ static grpc_error* finish_lithdr_incidx(grpc_chttp2_hpack_parser* p,
grpc_mdelem md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
GPR_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX();
grpc_error* err =
on_hdr(p,
grpc_mdelem_from_slices(grpc_slice_ref_internal(GRPC_MDKEY(md)),
take_string(p, &p->value, true)),
1);
grpc_error* err = on_hdr<true>(
p, grpc_mdelem_from_slices(grpc_slice_ref_internal(GRPC_MDKEY(md)),
take_string(p, &p->value, true)));
if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
return parse_begin(p, cur, end);
}
@ -813,10 +815,8 @@ static grpc_error* finish_lithdr_incidx_v(grpc_chttp2_hpack_parser* p,
const uint8_t* end) {
GRPC_STATS_INC_HPACK_RECV_LITHDR_INCIDX_V();
grpc_error* err =
on_hdr(p,
grpc_mdelem_from_slices(take_string(p, &p->key, true),
take_string(p, &p->value, true)),
1);
on_hdr<true>(p, grpc_mdelem_from_slices(take_string(p, &p->key, true),
take_string(p, &p->value, true)));
if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
return parse_begin(p, cur, end);
}
@ -865,11 +865,9 @@ static grpc_error* finish_lithdr_notidx(grpc_chttp2_hpack_parser* p,
grpc_mdelem md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
GPR_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX();
grpc_error* err =
on_hdr(p,
grpc_mdelem_from_slices(grpc_slice_ref_internal(GRPC_MDKEY(md)),
take_string(p, &p->value, false)),
0);
grpc_error* err = on_hdr<false>(
p, grpc_mdelem_from_slices(grpc_slice_ref_internal(GRPC_MDKEY(md)),
take_string(p, &p->value, false)));
if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
return parse_begin(p, cur, end);
}
@ -879,11 +877,9 @@ static grpc_error* finish_lithdr_notidx_v(grpc_chttp2_hpack_parser* p,
const uint8_t* cur,
const uint8_t* end) {
GRPC_STATS_INC_HPACK_RECV_LITHDR_NOTIDX_V();
grpc_error* err =
on_hdr(p,
grpc_mdelem_from_slices(take_string(p, &p->key, true),
take_string(p, &p->value, false)),
0);
grpc_error* err = on_hdr<false>(
p, grpc_mdelem_from_slices(take_string(p, &p->key, true),
take_string(p, &p->value, false)));
if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
return parse_begin(p, cur, end);
}
@ -932,11 +928,9 @@ static grpc_error* finish_lithdr_nvridx(grpc_chttp2_hpack_parser* p,
grpc_mdelem md = grpc_chttp2_hptbl_lookup(&p->table, p->index);
GPR_ASSERT(!GRPC_MDISNULL(md)); /* handled in string parsing */
GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX();
grpc_error* err =
on_hdr(p,
grpc_mdelem_from_slices(grpc_slice_ref_internal(GRPC_MDKEY(md)),
take_string(p, &p->value, false)),
0);
grpc_error* err = on_hdr<false>(
p, grpc_mdelem_from_slices(grpc_slice_ref_internal(GRPC_MDKEY(md)),
take_string(p, &p->value, false)));
if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
return parse_begin(p, cur, end);
}
@ -946,11 +940,9 @@ static grpc_error* finish_lithdr_nvridx_v(grpc_chttp2_hpack_parser* p,
const uint8_t* cur,
const uint8_t* end) {
GRPC_STATS_INC_HPACK_RECV_LITHDR_NVRIDX_V();
grpc_error* err =
on_hdr(p,
grpc_mdelem_from_slices(take_string(p, &p->key, true),
take_string(p, &p->value, false)),
0);
grpc_error* err = on_hdr<false>(
p, grpc_mdelem_from_slices(take_string(p, &p->key, true),
take_string(p, &p->value, false)));
if (err != GRPC_ERROR_NONE) return parse_error(p, cur, end, err);
return parse_begin(p, cur, end);
}

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