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cc0748f509
Upcoming changes to node-gyp will turn on `-fvisibility=hidden` on macOS. Ensure that public symbols that are dlsym'd have default visibility. Refs: https://github.com/nodejs/node/pull/28647 Refs: https://github.com/nodejs/node-gyp/pull/1828 PR-URL: https://github.com/nodejs/node/pull/28717 Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Anna Henningsen <anna@addaleax.net>
54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
#include <node.h>
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#include <v8.h>
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#ifndef _WIN32
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#include <dlfcn.h>
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extern "C"
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__attribute__((visibility("default")))
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const char* dlopen_pong(void) {
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return "pong";
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}
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namespace {
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using v8::FunctionCallbackInfo;
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using v8::Isolate;
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using v8::Local;
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using v8::Object;
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using v8::NewStringType;
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using v8::String;
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using v8::Value;
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typedef const char* (*ping)(void);
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static ping ping_func;
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void LoadLibrary(const FunctionCallbackInfo<Value>& args) {
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const String::Utf8Value filename(args.GetIsolate(), args[0]);
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void* handle = dlopen(*filename, RTLD_LAZY);
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if (handle == nullptr) fprintf(stderr, "%s\n", dlerror());
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assert(handle != nullptr);
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ping_func = reinterpret_cast<ping>(dlsym(handle, "dlopen_ping"));
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assert(ping_func != nullptr);
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}
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void Ping(const FunctionCallbackInfo<Value>& args) {
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Isolate* isolate = args.GetIsolate();
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assert(ping_func != nullptr);
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args.GetReturnValue().Set(String::NewFromUtf8(
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isolate, ping_func(), NewStringType::kNormal).ToLocalChecked());
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}
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void init(Local<Object> exports) {
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NODE_SET_METHOD(exports, "load", LoadLibrary);
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NODE_SET_METHOD(exports, "ping", Ping);
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}
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NODE_MODULE(NODE_GYP_MODULE_NAME, init)
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} // anonymous namespace
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#endif // _WIN32
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