Mercurial > prosody-hg
diff util-src/poll.c @ 10921:6eb5d2bb11af
util-src: Use the luaL_pushfail API added in Lua 5.4 to highlight all failure conditions
Actually just an alias of pushnil, but it does make it more obvious
where the failure conditions are, which is good for readability.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 07 Jun 2020 02:25:56 +0200 |
| parents | 46a7792fdac5 |
| children | 898554323338 |
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--- a/util-src/poll.c Sun Jun 07 02:14:55 2020 +0200 +++ b/util-src/poll.c Sun Jun 07 02:25:56 2020 +0200 @@ -37,6 +37,9 @@ #if (LUA_VERSION_NUM == 501) #define luaL_setmetatable(L, tname) luaL_getmetatable(L, tname); lua_setmetatable(L, -2) #endif +#if (LUA_VERSION_NUM < 504) +#define luaL_pushfail lua_pushnil +#endif /* * Structure to keep state for each type of API @@ -67,7 +70,7 @@ int wantwrite = lua_toboolean(L, 4); if(fd < 0) { - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(EBADF)); lua_pushinteger(L, EBADF); return 3; @@ -84,7 +87,7 @@ if(ret < 0) { ret = errno; - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(ret)); lua_pushinteger(L, ret); return 3; @@ -96,14 +99,14 @@ #else if(fd > FD_SETSIZE) { - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(EBADF)); lua_pushinteger(L, EBADF); return 3; } if(FD_ISSET(fd, &state->all)) { - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(EEXIST)); lua_pushinteger(L, EEXIST); return 3; @@ -160,7 +163,7 @@ } else { ret = errno; - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(ret)); lua_pushinteger(L, ret); return 3; @@ -169,7 +172,7 @@ #else if(!FD_ISSET(fd, &state->all)) { - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(ENOENT)); lua_pushinteger(L, ENOENT); return 3; @@ -218,7 +221,7 @@ } else { ret = errno; - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(ret)); lua_pushinteger(L, ret); return 3; @@ -227,7 +230,7 @@ #else if(!FD_ISSET(fd, &state->all)) { - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(ENOENT)); lua_pushinteger(L, ENOENT); return 3; @@ -314,18 +317,20 @@ #endif if(ret == 0) { + /* Is this an error? */ lua_pushnil(L); lua_pushstring(L, "timeout"); return 2; } else if(ret < 0 && errno == EINTR) { + /* Is this an error? */ lua_pushnil(L); lua_pushstring(L, "signal"); return 2; } else if(ret < 0) { ret = errno; - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(ret)); lua_pushinteger(L, ret); return 3; @@ -399,7 +404,7 @@ int epoll_fd = epoll_create1(EPOLL_CLOEXEC); if(epoll_fd <= 0) { - lua_pushnil(L); + luaL_pushfail(L); lua_pushstring(L, strerror(errno)); lua_pushinteger(L, errno); return 3;