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Uses of "likely" in macros active to all users

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The use of 'l_likely' in auxlib macros 'luaL_argcheck' and
'luaL_argexpected' should not be restricted to Lua's own code.
For that, 'l_likely' was renamed to 'luai_likely' to be exported
to external code.
This commit is contained in:
Roberto Ierusalimschy 2021-03-09 12:50:59 -03:00
parent 511d53a826
commit a7b8b27dd3
2 changed files with 15 additions and 12 deletions
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9
lauxlib.h
View File

@ -12,6 +12,7 @@
#include <stddef.h>
#include <stdio.h>
#include "luaconf.h"
#include "lua.h"
@ -122,10 +123,6 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
** ===============================================================
*/
#if !defined(l_likely)
#define l_likely(x) x
#endif
#define luaL_newlibtable(L,l) \
lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
@ -134,10 +131,10 @@ LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
(luaL_checkversion(L), luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
#define luaL_argcheck(L, cond,arg,extramsg) \
((void)(l_likely(cond) || luaL_argerror(L, (arg), (extramsg))))
((void)(luai_likely(cond) || luaL_argerror(L, (arg), (extramsg))))
#define luaL_argexpected(L,cond,arg,tname) \
((void)(l_likely(cond) || luaL_typeerror(L, (arg), (tname))))
((void)(luai_likely(cond) || luaL_typeerror(L, (arg), (tname))))
#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))

18
luaconf.h
View File

@ -665,20 +665,26 @@
** macros to improve jump prediction, used mostly for error handling
** and debug facilities.
*/
#if (defined(LUA_CORE) || defined(LUA_LIB)) && !defined(l_likely)
#if !defined(luai_likely)
#include <stdio.h>
#if defined(__GNUC__)
#define l_likely(x) (__builtin_expect(((x) != 0), 1))
#define l_unlikely(x) (__builtin_expect(((x) != 0), 0))
#define luai_likely(x) (__builtin_expect(((x) != 0), 1))
#define luai_unlikely(x) (__builtin_expect(((x) != 0), 0))
#else
#define l_likely(x) (x)
#define l_unlikely(x) (x)
#define luai_likely(x) (x)
#define luai_unlikely(x) (x)
#endif
#endif
#if defined(LUA_CORE) || defined(LUA_LIB)
/* shorter names for Lua's own use */
#define l_likely(x) luai_likely(x)
#define l_unlikely(x) luai_unlikely(x)
#endif
/* }================================================================== */