aboutsummaryrefslogtreecommitdiffhomepage
path: root/tools/codegen/core/gen_static_metadata.py
diff options
context:
space:
mode:
Diffstat (limited to 'tools/codegen/core/gen_static_metadata.py')
-rwxr-xr-xtools/codegen/core/gen_static_metadata.py215
1 files changed, 29 insertions, 186 deletions
diff --git a/tools/codegen/core/gen_static_metadata.py b/tools/codegen/core/gen_static_metadata.py
index 0374cf75a1..cf3762dbb8 100755
--- a/tools/codegen/core/gen_static_metadata.py
+++ b/tools/codegen/core/gen_static_metadata.py
@@ -31,12 +31,8 @@
import hashlib
import itertools
-import collections
import os
import sys
-import subprocess
-import re
-import perfection
# configuration: a list of either strings or 2-tuples of strings
# a single string represents a static grpc_mdstr
@@ -44,8 +40,6 @@ import perfection
# also be created)
CONFIG = [
- # metadata strings
- 'host',
'grpc-timeout',
'grpc-internal-encoding-request',
'grpc-payload-bin',
@@ -54,19 +48,12 @@ CONFIG = [
'grpc-accept-encoding',
'user-agent',
':authority',
+ 'host',
'grpc-message',
'grpc-status',
'grpc-tracing-bin',
'grpc-stats-bin',
'',
- # channel arg keys
- 'grpc.wait_for_ready',
- 'grpc.timeout',
- 'grpc.max_request_message_bytes',
- 'grpc.max_response_message_bytes',
- # well known method names
- '/grpc.lb.v1.LoadBalancer/BalanceLoad',
- # metadata elements
('grpc-status', '0'),
('grpc-status', '1'),
('grpc-status', '2'),
@@ -143,26 +130,6 @@ CONFIG = [
('www-authenticate', ''),
]
-METADATA_BATCH_CALLOUTS = [
- ':path',
- ':method',
- ':status',
- ':authority',
- ':scheme',
- 'te',
- 'grpc-message',
- 'grpc-status',
- 'grpc-payload-bin',
- 'grpc-encoding',
- 'grpc-accept-encoding',
- 'content-type',
- 'grpc-internal-encoding-request',
- 'user-agent',
- 'host',
- 'lb-token',
- 'lb-cost-bin',
-]
-
COMPRESSION_ALGORITHMS = [
'identity',
'deflate',
@@ -170,7 +137,7 @@ COMPRESSION_ALGORITHMS = [
]
# utility: mangle the name of a config
-def mangle(elem, name=None):
+def mangle(elem):
xl = {
'-': '_',
':': '',
@@ -195,14 +162,10 @@ def mangle(elem, name=None):
r += put
if r[-1] == '_': r = r[:-1]
return r
- def n(default, name=name):
- if name is None: return 'grpc_%s_' % default
- if name == '': return ''
- return 'grpc_%s_' % name
if isinstance(elem, tuple):
- return '%s%s_%s' % (n('mdelem'), m0(elem[0]), m0(elem[1]))
+ return 'grpc_mdelem_%s_%s' % (m0(elem[0]), m0(elem[1]))
else:
- return '%s%s' % (n('mdstr'), m0(elem))
+ return 'grpc_mdstr_%s' % (m0(elem))
# utility: generate some hash value for a string
def fake_hash(elem):
@@ -218,37 +181,28 @@ def put_banner(files, banner):
print >>f
# build a list of all the strings we need
-all_strs = list()
-all_elems = list()
+all_strs = set()
+all_elems = set()
static_userdata = {}
-# put metadata batch callouts first, to make the check of if a static metadata
-# string is a callout trivial
-for elem in METADATA_BATCH_CALLOUTS:
- if elem not in all_strs:
- all_strs.append(elem)
for elem in CONFIG:
if isinstance(elem, tuple):
- if elem[0] not in all_strs:
- all_strs.append(elem[0])
- if elem[1] not in all_strs:
- all_strs.append(elem[1])
- if elem not in all_elems:
- all_elems.append(elem)
+ all_strs.add(elem[0])
+ all_strs.add(elem[1])
+ all_elems.add(elem)
else:
- if elem not in all_strs:
- all_strs.append(elem)
+ all_strs.add(elem)
compression_elems = []
for mask in range(1, 1<<len(COMPRESSION_ALGORITHMS)):
val = ','.join(COMPRESSION_ALGORITHMS[alg]
for alg in range(0, len(COMPRESSION_ALGORITHMS))
if (1 << alg) & mask)
elem = ('grpc-accept-encoding', val)
- if val not in all_strs:
- all_strs.append(val)
- if elem not in all_elems:
- all_elems.append(elem)
+ all_strs.add(val)
+ all_elems.add(elem)
compression_elems.append(elem)
static_userdata[elem] = 1 + (mask | 1)
+all_strs = sorted(list(all_strs), key=mangle)
+all_elems = sorted(list(all_elems), key=mangle)
# output configuration
args = sys.argv[1:]
@@ -325,52 +279,15 @@ print >>H
print >>C, '#include "src/core/lib/transport/static_metadata.h"'
print >>C
-print >>C, '#include "src/core/lib/slice/slice_internal.h"'
-print >>C
-
-str_ofs = 0
-id2strofs = {}
-for i, elem in enumerate(all_strs):
- id2strofs[i] = str_ofs
- str_ofs += len(elem);
-def slice_def(i):
- return '{.refcount = &grpc_static_metadata_refcounts[%d], .data.refcounted = {g_bytes+%d, %d}}' % (i, id2strofs[i], len(all_strs[i]))
-
-# validate configuration
-for elem in METADATA_BATCH_CALLOUTS:
- assert elem in all_strs
print >>H, '#define GRPC_STATIC_MDSTR_COUNT %d' % len(all_strs)
-print >>H, 'extern const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT];'
+print >>H, 'extern grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];'
for i, elem in enumerate(all_strs):
print >>H, '/* "%s" */' % elem
- print >>H, '#define %s (grpc_static_slice_table[%d])' % (mangle(elem).upper(), i)
-print >>H
-print >>C, 'static uint8_t g_bytes[] = {%s};' % (','.join('%d' % ord(c) for c in ''.join(all_strs)))
-print >>C
-print >>C, 'static void static_ref(void *unused) {}'
-print >>C, 'static void static_unref(grpc_exec_ctx *exec_ctx, void *unused) {}'
-print >>C, 'static const grpc_slice_refcount_vtable static_sub_vtable = {static_ref, static_unref, grpc_slice_default_eq_impl, grpc_slice_default_hash_impl};';
-print >>H, 'extern const grpc_slice_refcount_vtable grpc_static_metadata_vtable;';
-print >>C, 'const grpc_slice_refcount_vtable grpc_static_metadata_vtable = {static_ref, static_unref, grpc_static_slice_eq, grpc_static_slice_hash};';
-print >>C, 'static grpc_slice_refcount static_sub_refcnt = {&static_sub_vtable, &static_sub_refcnt};';
-print >>H, 'extern grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT];'
-print >>C, 'grpc_slice_refcount grpc_static_metadata_refcounts[GRPC_STATIC_MDSTR_COUNT] = {'
-for i, elem in enumerate(all_strs):
- print >>C, ' {&grpc_static_metadata_vtable, &static_sub_refcnt},'
-print >>C, '};'
-print >>C
-print >>H, '#define GRPC_IS_STATIC_METADATA_STRING(slice) \\'
-print >>H, ' ((slice).refcount != NULL && (slice).refcount->vtable == &grpc_static_metadata_vtable)'
+ print >>H, '#define %s (&grpc_static_mdstr_table[%d])' % (mangle(elem).upper(), i)
print >>H
-print >>C, 'const grpc_slice grpc_static_slice_table[GRPC_STATIC_MDSTR_COUNT] = {'
-for i, elem in enumerate(all_strs):
- print >>C, slice_def(i) + ','
-print >>C, '};'
+print >>C, 'grpc_mdstr grpc_static_mdstr_table[GRPC_STATIC_MDSTR_COUNT];'
print >>C
-print >>H, '#define GRPC_STATIC_METADATA_INDEX(static_slice) \\'
-print >>H, ' ((int)((static_slice).refcount - grpc_static_metadata_refcounts))'
-print >>H
print >>D, '# hpack fuzzing dictionary'
for i, elem in enumerate(all_strs):
@@ -380,12 +297,13 @@ for i, elem in enumerate(all_elems):
[len(elem[1])] + [ord(c) for c in elem[1]]))
print >>H, '#define GRPC_STATIC_MDELEM_COUNT %d' % len(all_elems)
-print >>H, 'extern grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];'
+print >>H, 'extern grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];'
print >>H, 'extern uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT];'
for i, elem in enumerate(all_elems):
print >>H, '/* "%s": "%s" */' % elem
- print >>H, '#define %s (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[%d], GRPC_MDELEM_STORAGE_STATIC))' % (mangle(elem).upper(), i)
+ print >>H, '#define %s (&grpc_static_mdelem_table[%d])' % (mangle(elem).upper(), i)
print >>H
+print >>C, 'grpc_mdelem grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT];'
print >>C, 'uintptr_t grpc_static_mdelem_user_data[GRPC_STATIC_MDELEM_COUNT] = {'
print >>C, ' %s' % ','.join('%d' % static_userdata.get(elem, 0) for elem in all_elems)
print >>C, '};'
@@ -401,92 +319,17 @@ def md_idx(m):
if m == m2:
return i
-def offset_trials(mink):
- yield 0
- for i in range(1, 100):
- for mul in [-1, 1]:
- yield mul * i
-
-def perfect_hash(keys, name):
- p = perfection.hash_parameters(keys)
- def f(i, p=p):
- i += p.offset
- x = i % p.t
- y = i / p.t
- return x + p.r[y]
- return {
- 'PHASHRANGE': p.t - 1 + max(p.r),
- 'PHASHNKEYS': len(p.slots),
- 'pyfunc': f,
- 'code': """
-static const int8_t %(name)s_r[] = {%(r)s};
-static uint32_t %(name)s_phash(uint32_t i) {
- i %(offset_sign)s= %(offset)d;
- uint32_t x = i %% %(t)d;
- uint32_t y = i / %(t)d;
- uint32_t h = x;
- if (y < GPR_ARRAY_SIZE(%(name)s_r)) {
- uint32_t delta = (uint32_t)%(name)s_r[y];
- h += delta;
- }
- return h;
-}
- """ % {
- 'name': name,
- 'r': ','.join('%d' % (r if r is not None else 0) for r in p.r),
- 't': p.t,
- 'offset': abs(p.offset),
- 'offset_sign': '+' if p.offset > 0 else '-'
- }
- }
-
-
-elem_keys = [str_idx(elem[0]) * len(all_strs) + str_idx(elem[1]) for elem in all_elems]
-elem_hash = perfect_hash(elem_keys, "elems")
-print >>C, elem_hash['code']
-
-keys = [0] * int(elem_hash['PHASHRANGE'])
-idxs = [255] * int(elem_hash['PHASHNKEYS'])
-for i, k in enumerate(elem_keys):
- h = elem_hash['pyfunc'](k)
- assert keys[h] == 0
- keys[h] = k
- idxs[h] = i
-print >>C, 'static const uint16_t elem_keys[] = {%s};' % ','.join('%d' % k for k in keys)
-print >>C, 'static const uint8_t elem_idxs[] = {%s};' % ','.join('%d' % i for i in idxs)
-print >>C
-
-print >>H, 'grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b);'
-print >>C, 'grpc_mdelem grpc_static_mdelem_for_static_strings(int a, int b) {'
-print >>C, ' if (a == -1 || b == -1) return GRPC_MDNULL;'
-print >>C, ' uint32_t k = (uint32_t)(a * %d + b);' % len(all_strs)
-print >>C, ' uint32_t h = elems_phash(k);'
-print >>C, ' return elem_keys[h] == k ? GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[elem_idxs[h]], GRPC_MDELEM_STORAGE_STATIC) : GRPC_MDNULL;'
-print >>C, '}'
+print >>H, 'extern const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT*2];'
+print >>C, 'const uint8_t grpc_static_metadata_elem_indices[GRPC_STATIC_MDELEM_COUNT*2] = {'
+print >>C, ','.join('%d' % str_idx(x) for x in itertools.chain.from_iterable([a,b] for a, b in all_elems))
+print >>C, '};'
print >>C
-print >>C, 'grpc_mdelem_data grpc_static_mdelem_table[GRPC_STATIC_MDELEM_COUNT] = {'
-for a, b in all_elems:
- print >>C, '{%s,%s},' % (slice_def(str_idx(a)), slice_def(str_idx(b)))
+print >>H, 'extern const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT];'
+print >>C, 'const char *const grpc_static_metadata_strings[GRPC_STATIC_MDSTR_COUNT] = {'
+print >>C, '%s' % ',\n'.join(' "%s"' % s for s in all_strs)
print >>C, '};'
-
-print >>H, 'typedef enum {'
-for elem in METADATA_BATCH_CALLOUTS:
- print >>H, ' %s,' % mangle(elem, 'batch').upper()
-print >>H, ' GRPC_BATCH_CALLOUTS_COUNT'
-print >>H, '} grpc_metadata_batch_callouts_index;'
-print >>H
-print >>H, 'typedef union {'
-print >>H, ' struct grpc_linked_mdelem *array[GRPC_BATCH_CALLOUTS_COUNT];'
-print >>H, ' struct {'
-for elem in METADATA_BATCH_CALLOUTS:
- print >>H, ' struct grpc_linked_mdelem *%s;' % mangle(elem, '').lower()
-print >>H, ' } named;'
-print >>H, '} grpc_metadata_batch_callouts;'
-print >>H
-print >>H, '#define GRPC_BATCH_INDEX_OF(slice) \\'
-print >>H, ' (GRPC_IS_STATIC_METADATA_STRING((slice)) ? (grpc_metadata_batch_callouts_index)GPR_CLAMP(GRPC_STATIC_METADATA_INDEX((slice)), 0, GRPC_BATCH_CALLOUTS_COUNT) : GRPC_BATCH_CALLOUTS_COUNT)'
-print >>H
+print >>C
print >>H, 'extern const uint8_t grpc_static_accept_encoding_metadata[%d];' % (1 << len(COMPRESSION_ALGORITHMS))
print >>C, 'const uint8_t grpc_static_accept_encoding_metadata[%d] = {' % (1 << len(COMPRESSION_ALGORITHMS))
@@ -494,7 +337,7 @@ print >>C, '0,%s' % ','.join('%d' % md_idx(elem) for elem in compression_elems)
print >>C, '};'
print >>C
-print >>H, '#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (GRPC_MAKE_MDELEM(&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]], GRPC_MDELEM_STORAGE_STATIC))'
+print >>H, '#define GRPC_MDELEM_ACCEPT_ENCODING_FOR_ALGORITHMS(algs) (&grpc_static_mdelem_table[grpc_static_accept_encoding_metadata[(algs)]])'
print >>H, '#endif /* GRPC_CORE_LIB_TRANSPORT_STATIC_METADATA_H */'
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-30 18:31:32 +0000