signum is now platform independent

lualib-src/lualib-core.c

@@ -1,5 +1,6 @@
 #include <unistd.h>
 #include <assert.h>
+#include <signal.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <stddef.h>
@@ -182,6 +183,53 @@ ltimercancel(lua_State *L)
 	return 1;
 }
 
+static int
+lsignalmap(lua_State *L)
+{
+	size_t i;
+	lua_newtable(L);
+	struct signal {
+		const char *name;
+		int signum;
+	} signals[] = {
+		{"SIGINT", SIGINT},
+		{"SIGILL", SIGILL},
+		{"SIGABRT", SIGABRT},
+		{"SIGFPE", SIGFPE},
+		{"SIGSEGV", SIGSEGV},
+		{"SIGTERM", SIGTERM},
+		{"SIGHUP", SIGHUP},
+		{"SIGQUIT", SIGQUIT},
+		{"SIGTRAP", SIGTRAP},
+		{"SIGKILL", SIGKILL},
+		{"SIGBUS", SIGBUS},
+		{"SIGSYS", SIGSYS},
+		{"SIGPIPE", SIGPIPE},
+		{"SIGALRM", SIGALRM},
+		{"SIGURG", SIGURG},
+		{"SIGSTOP", SIGSTOP},
+		{"SIGTSTP", SIGTSTP},
+		{"SIGCONT", SIGCONT},
+		{"SIGCHLD", SIGCHLD},
+		{"SIGTTIN", SIGTTIN},
+		{"SIGTTOU", SIGTTOU},
+		{"SIGPOLL", SIGPOLL},
+		{"SIGXCPU", SIGXCPU},
+		{"SIGXFSZ", SIGXFSZ},
+		{"SIGVTALRM", SIGVTALRM},
+		{"SIGPROF", SIGPROF},
+		{"SIGUSR1", SIGUSR1},
+		{"SIGUSR2", SIGUSR2},
+	};
+	for (i = 0; i < sizeof(signals) / sizeof(signals[0]); i++) {
+		lua_pushinteger(L, signals[i].signum);
+		lua_setfield(L, -2, signals[i].name);
+		lua_pushstring(L, signals[i].name);
+		lua_seti(L, -2, signals[i].signum);
+	}
+	return 1;
+}
+
 static int
 lsignal(lua_State *L)
 {
@@ -527,6 +575,7 @@ luaopen_core_c(lua_State *L)
 		{"dispatch", ldispatch},
 		{"timeout", ltimeout},
 		{"timercancel", ltimercancel},
+		{"signalmap", lsignalmap},
 		{"signal", lsignal},
 		{"genid", lgenid},
 		{"tostring", ltostring},

lualib/core.lua

@@ -35,49 +35,8 @@ end
 
 --signal
 local signal = c.signal
+local signal_map = c.signalmap()
 local signal_dispatch = {}
-local signal_map = {}
-do
-	local sig_list = {
-		SIGINT		= 2,	-- Interactive attention signal.
-		SIGILL		= 4,	-- Illegal instruction.
-		SIGABRT		= 6,	-- Abnormal termination.
-		SIGFPE		= 8,	-- Erroneous arithmetic operation.
-		SIGSEGV		= 11,	-- Invalid access to storage.
-		SIGTERM		= 15,	-- Termination request.
-
-		--Historical signals specified by POSIX.
-		SIGHUP	 	= 1,	-- Hangup.
-		SIGQUIT	 	= 3,	-- Quit.
-		SIGTRAP	 	= 5,	-- Trace/breakpoint trap.
-		SIGKILL	 	= 9,	-- Killed.
-		SIGBUS	 	= 10,	-- Bus error.
-		SIGSYS	 	= 12,	-- Bad system call.
-		SIGPIPE	 	= 13,	-- Broken pipe.
-		SIGALRM	 	= 14,	-- Alarm clock.
-
-		--New(er) POSIX signals (1003.1-2008, 1003.1-2013).
-
-		SIGURG		= 16,	-- Urgent data is available at a socket.
-		SIGSTOP		= 17,	-- Stop, unblockable.
-		SIGTSTP		= 18,	-- Keyboard stop.
-		SIGCONT		= 19,	-- Continue.
-		SIGCHLD		= 20,	-- Child terminated or stopped.
-		SIGTTIN		= 21,	-- Background read from control terminal.
-		SIGTTOU		= 22,	-- Background write to control terminal.
-		SIGPOLL		= 23,	-- Pollable event occurred (System V).
-		SIGXCPU		= 24,	-- CPU time limit exceeded.
-		SIGXFSZ		= 25,	-- File size limit exceeded.
-		SIGVTALRM	= 26,	-- Virtual timer expired.
-		SIGPROF		= 27,	-- Profiling timer expired.
-		SIGUSR1		= 30,	-- User-defined signal 1.
-		SIGUSR2		= 31,	-- User-defined signal 2.
-	}
-	for k, v in pairs(sig_list) do
-		signal_map[k] = v
-		signal_map[v] = k
-	end
-end
 
 --coroutine
 --state migrate(RUN (WAIT->READY)/SLEEP RUN)