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#include <node_api.h>
#include <stdio.h>
#include <stdlib.h>
#define NODE_API_CALL(call) \
do { \
napi_status status = call; \
if (status != napi_ok) { \
fprintf(stderr, #call " failed: %d\n", status); \
abort(); \
} \
} while (0)
#define ABORT_IF_FALSE(condition) \
if (!(condition)) { \
fprintf(stderr, #condition " failed\n"); \
abort(); \
}
static void Finalize(node_api_basic_env env, void* data, void* hint) {
delete[] static_cast<uint8_t*>(data);
}
static napi_value CreateExternalBuffer(napi_env env, napi_callback_info info) {
napi_value argv[2], undefined, start, end;
size_t argc = 2;
int32_t n = 0;
napi_valuetype val_type = napi_undefined;
// Validate params and retrieve start and end function.
NODE_API_CALL(napi_get_cb_info(env, info, &argc, argv, nullptr, nullptr));
ABORT_IF_FALSE(argc == 2);
NODE_API_CALL(napi_typeof(env, argv[0], &val_type));
ABORT_IF_FALSE(val_type == napi_object);
NODE_API_CALL(napi_typeof(env, argv[1], &val_type));
ABORT_IF_FALSE(val_type == napi_number);
NODE_API_CALL(napi_get_named_property(env, argv[0], "start", &start));
NODE_API_CALL(napi_typeof(env, start, &val_type));
ABORT_IF_FALSE(val_type == napi_function);
NODE_API_CALL(napi_get_named_property(env, argv[0], "end", &end));
NODE_API_CALL(napi_typeof(env, end, &val_type));
ABORT_IF_FALSE(val_type == napi_function);
NODE_API_CALL(napi_get_value_int32(env, argv[1], &n));
NODE_API_CALL(napi_get_undefined(env, &undefined));
constexpr uint32_t kBufferLen = 32;
// Start the benchmark.
napi_call_function(env, argv[0], start, 0, nullptr, nullptr);
for (int32_t idx = 0; idx < n; idx++) {
napi_handle_scope scope;
uint8_t* buffer = new uint8_t[kBufferLen];
napi_value jsbuffer;
NODE_API_CALL(napi_open_handle_scope(env, &scope));
NODE_API_CALL(napi_create_external_buffer(
env, kBufferLen, buffer, Finalize, nullptr, &jsbuffer));
NODE_API_CALL(napi_close_handle_scope(env, scope));
}
// Conclude the benchmark.
napi_value end_argv[] = {argv[1]};
NODE_API_CALL(napi_call_function(env, argv[0], end, 1, end_argv, nullptr));
return undefined;
}
NAPI_MODULE_INIT() {
napi_property_descriptor props[] = {
{"createExternalBuffer",
nullptr,
CreateExternalBuffer,
nullptr,
nullptr,
nullptr,
static_cast<napi_property_attributes>(napi_writable | napi_configurable |
napi_enumerable),
nullptr},
};
NODE_API_CALL(napi_define_properties(
env, exports, sizeof(props) / sizeof(*props), props));
return exports;
}