common-node-startup.cc

#include <stdio.h>
#include <uv.h>

void Init() {
	printf("Init\n");
}

struct old_module {
	int version;
	void *aPointer;
	const char *filename;
	void (*entry_point)(void);
	const char *module_name;
};

struct new_module {
	int version;
	int something;
	void *aPointer;
	const char *filename;
	void (*entry_point)(void);
	void *anotherPointer;
	const char *module_name;
	void *yetAnotherPointer;
	void *andAnotherPointer;
};

// 0.10
extern "C" {
	__attribute__((visibility("default")))
	struct old_module hello_module = {
		.version = 11,
		.aPointer = __null,
		.filename = "../hello.cc",
		.entry_point = Init,
		.module_name = "hello"
	};
}

// 0.12
extern "C" {
	static struct new_module _module = {
		.version = 14 /* 46 for 4.0.0 */,
		.something = 0,
		.aPointer = __null,
		.filename = "../hello.cc",
		.entry_point = Init,
		.anotherPointer = __null,
		.module_name = "hello",
		.yetAnotherPointer = __null,
		.andAnotherPointer = __null
	};
	void node_module_register(void *module) __attribute__((weak));
	static void _register_hello(void) __attribute__((constructor));
	static void _register_hello(void) {
		if (node_module_register) {

			// Key off the libuv version to decide whether it's a version 4
			// module or one below that
			if (uv_version() >= 0x10703) {
				_module.version = 46;
			}
			node_module_register(&_module);
		}
	}
}