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| Current File : //home/ubuntu/node-v16.18.1/test/addons/dlopen-ping-pong/binding.cc |
#include <node.h>
#include <v8.h>
#ifndef _WIN32
#include <dlfcn.h>
extern "C"
__attribute__((visibility("default")))
const char* dlopen_pong(void) {
return "pong";
}
namespace {
using v8::FunctionCallbackInfo;
using v8::Isolate;
using v8::Local;
using v8::Object;
using v8::String;
using v8::Value;
typedef const char* (*ping)(void);
static ping ping_func;
void LoadLibrary(const FunctionCallbackInfo<Value>& args) {
const String::Utf8Value filename(args.GetIsolate(), args[0]);
void* handle = dlopen(*filename, RTLD_LAZY);
if (handle == nullptr) fprintf(stderr, "%s\n", dlerror());
assert(handle != nullptr);
ping_func = reinterpret_cast<ping>(dlsym(handle, "dlopen_ping"));
assert(ping_func != nullptr);
}
void Ping(const FunctionCallbackInfo<Value>& args) {
Isolate* isolate = args.GetIsolate();
assert(ping_func != nullptr);
args.GetReturnValue().Set(String::NewFromUtf8(
isolate, ping_func()).ToLocalChecked());
}
void init(Local<Object> exports) {
NODE_SET_METHOD(exports, "load", LoadLibrary);
NODE_SET_METHOD(exports, "ping", Ping);
}
NODE_MODULE(NODE_GYP_MODULE_NAME, init)
} // anonymous namespace
#endif // _WIN32
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