shithub: lua9

ref: 58417631c1338bce2a8f63ffb68a462a31794995
dir: /lib9.c/

#include <u.h>
#include <lib9.h>
#include <lua.h>
#include <lauxlib.h>
#include <lualib.h>
#include "llib9.h"
#include "utils.h"

static int
lfork(lua_State *L)
{
	char err[128];

	if(lua_isfunction(L, 1) == 0)
		return luaL_argerror(L, 1, "expected a function");
	switch(rfork(RFFDG|RFREND|RFPROC)){
	case -1:
		errstr(err, sizeof err);
		lua_pushfstring(L, "fork failed: %s", err);
		return lua_error(L);
	case 0:
		break;
	default:
		lua_call(L, 0, 0);
	}
	return 0;
}


static const struct luaL_Reg lib9 [] = {
	{ "fork", lfork },
	{ NULL, NULL }
};

int
openlib9(lua_State *L)
{
	luaL_newlib(L, lib9);
	pushglobal(L, "OREAD", 0);
	pushglobal(L, "OWRITE", 1);
	return 1;
}