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GeezerVison is showing github.com — node-api: provide napi_define_properties fast path · nodejs/node@dbf9e9f

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  • Makefile
  • benchmark/napi/define_properties
    • .gitignore
    • binding.c
    • binding.gyp
    • index.js
  • src
    • js_native_api_v8.cc
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‎Makefile‎

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+1Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1422,6 +1422,7 @@ FORMAT_CPP_FILES ?=
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FORMAT_CPP_FILES += $(LINT_CPP_FILES)
14231423
# C source codes.
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FORMAT_CPP_FILES += $(wildcard \
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benchmark/napi/*/*.c \
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test/js-native-api/*/*.c \
14261427
test/js-native-api/*/*.h \
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test/node-api/*/*.c \
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‎benchmark/napi/define_properties/.gitignore‎

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+1Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1 @@
1+
build/
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‎benchmark/napi/define_properties/binding.c‎

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+104Lines changed: 104 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
1+
#include <node_api.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define NODE_API_CALL(call) \
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do { \
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napi_status status = call; \
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if (status != napi_ok) { \
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fprintf(stderr, #call " failed: %d\n", status); \
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abort(); \
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} \
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} while (0)
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#define ABORT_IF_FALSE(condition) \
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if (!(condition)) { \
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fprintf(stderr, #condition " failed\n"); \
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abort(); \
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}
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static napi_value Runner(napi_env env,
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napi_callback_info info,
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napi_property_attributes attr) {
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napi_value argv[2], undefined, js_array_length, start, end;
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size_t argc = 2;
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napi_valuetype val_type = napi_undefined;
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bool is_array = false;
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uint32_t array_length = 0;
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napi_value* native_array;
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// Validate params and retrieve start and end function.
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NODE_API_CALL(napi_get_cb_info(env, info, &argc, argv, NULL, NULL));
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ABORT_IF_FALSE(argc == 2);
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NODE_API_CALL(napi_typeof(env, argv[0], &val_type));
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ABORT_IF_FALSE(val_type == napi_object);
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NODE_API_CALL(napi_is_array(env, argv[1], &is_array));
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ABORT_IF_FALSE(is_array);
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NODE_API_CALL(napi_get_array_length(env, argv[1], &array_length));
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NODE_API_CALL(napi_get_named_property(env, argv[0], "start", &start));
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NODE_API_CALL(napi_typeof(env, start, &val_type));
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ABORT_IF_FALSE(val_type == napi_function);
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NODE_API_CALL(napi_get_named_property(env, argv[0], "end", &end));
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NODE_API_CALL(napi_typeof(env, end, &val_type));
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ABORT_IF_FALSE(val_type == napi_function);
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NODE_API_CALL(napi_get_undefined(env, &undefined));
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NODE_API_CALL(napi_create_uint32(env, array_length, &js_array_length));
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// Copy objects into a native array.
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native_array = malloc(array_length * sizeof(*native_array));
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for (uint32_t idx = 0; idx < array_length; idx++) {
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NODE_API_CALL(napi_get_element(env, argv[1], idx, &native_array[idx]));
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}
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const napi_property_descriptor desc = {
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"prop", NULL, NULL, NULL, NULL, js_array_length, attr, NULL};
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// Start the benchmark.
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napi_call_function(env, argv[0], start, 0, NULL, NULL);
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for (uint32_t idx = 0; idx < array_length; idx++) {
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NODE_API_CALL(napi_define_properties(env, native_array[idx], 1, &desc));
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}
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// Conclude the benchmark.
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NODE_API_CALL(
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napi_call_function(env, argv[0], end, 1, &js_array_length, NULL));
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free(native_array);
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return undefined;
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}
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static napi_value RunFastPath(napi_env env, napi_callback_info info) {
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return Runner(env, info, napi_writable | napi_enumerable | napi_configurable);
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}
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static napi_value RunSlowPath(napi_env env, napi_callback_info info) {
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return Runner(env, info, napi_writable | napi_enumerable);
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}
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NAPI_MODULE_INIT() {
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napi_property_descriptor props[] = {
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{"runFastPath",
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NULL,
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RunFastPath,
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NULL,
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NULL,
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NULL,
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napi_writable | napi_configurable | napi_enumerable,
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NULL},
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{"runSlowPath",
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NULL,
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RunSlowPath,
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NULL,
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NULL,
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NULL,
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napi_writable | napi_configurable | napi_enumerable,
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NULL},
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};
100+
101+
NODE_API_CALL(napi_define_properties(
102+
env, exports, sizeof(props) / sizeof(*props), props));
103+
return exports;
104+
}
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‎benchmark/napi/define_properties/binding.gyp‎

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+8Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,8 @@
1+
{
2+
'targets': [
3+
{
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'target_name': 'binding',
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'sources': [ 'binding.c' ]
6+
}
7+
]
8+
}
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‎benchmark/napi/define_properties/index.js‎

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+15Lines changed: 15 additions & 0 deletions
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@@ -0,0 +1,15 @@
1+
'use strict';
2+
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const common = require('../../common.js');
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const binding = require(`./build/${common.buildType}/binding`);
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const bench = common.createBenchmark(main, {
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n: [5e6],
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implem: ['runFastPath', 'runSlowPath'],
10+
});
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function main({ n, implem }) {
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const objs = Array(n).fill(null).map((item) => new Object());
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binding[implem](bench, objs);
15+
}
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‎src/js_native_api_v8.cc‎

Copy file name to clipboardExpand all lines: src/js_native_api_v8.cc
+20-9Lines changed: 20 additions & 9 deletions
Original file line numberDiff line numberDiff line change
@@ -1369,16 +1369,27 @@ napi_define_properties(napi_env env,
13691369
}
13701370
} else {
13711371
v8::Local<v8::Value> value = v8impl::V8LocalValueFromJsValue(p->value);
1372+
bool defined_successfully = false;
1373+
1374+
if ((p->attributes & napi_enumerable) &&
1375+
(p->attributes & napi_writable) &&
1376+
(p->attributes & napi_configurable)) {
1377+
// Use a fast path for this type of data property.
1378+
auto define_maybe =
1379+
obj->CreateDataProperty(context, property_name, value);
1380+
defined_successfully = define_maybe.FromMaybe(false);
1381+
} else {
1382+
v8::PropertyDescriptor descriptor(value,
1383+
(p->attributes & napi_writable) != 0);
1384+
descriptor.set_enumerable((p->attributes & napi_enumerable) != 0);
1385+
descriptor.set_configurable((p->attributes & napi_configurable) != 0);
1386+
1387+
auto define_maybe =
1388+
obj->DefineProperty(context, property_name, descriptor);
1389+
defined_successfully = define_maybe.FromMaybe(false);
1390+
}
13721391

1373-
v8::PropertyDescriptor descriptor(value,
1374-
(p->attributes & napi_writable) != 0);
1375-
descriptor.set_enumerable((p->attributes & napi_enumerable) != 0);
1376-
descriptor.set_configurable((p->attributes & napi_configurable) != 0);
1377-
1378-
auto define_maybe =
1379-
obj->DefineProperty(context, property_name, descriptor);
1380-
1381-
if (!define_maybe.FromMaybe(false)) {
1392+
if (!defined_successfully) {
13821393
return napi_set_last_error(env, napi_invalid_arg);
13831394
}
13841395
}

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