diff options
| author | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2021-10-29 13:41:24 -0300 |
|---|---|---|
| committer | Roberto Ierusalimschy <roberto@inf.puc-rio.br> | 2021-10-29 13:41:24 -0300 |
| commit | 1fce5bea817de50e055a84c153a975f25bfcf493 (patch) | |
| tree | 294645bf9a85557026d8c99d74c2eac50a74302e /ldo.h | |
| parent | 3699446aaf5c7a07af028b1ae43cf52d2d4dda59 (diff) | |
| download | lua-1fce5bea817de50e055a84c153a975f25bfcf493.tar.gz lua-1fce5bea817de50e055a84c153a975f25bfcf493.tar.bz2 lua-1fce5bea817de50e055a84c153a975f25bfcf493.zip | |
More uniform implementation for tail calls
'luaD_pretailcall' mimics 'luaD_precall', handling call metamethods
and calling C functions directly. That makes the code in the
interpreter loop simpler.
This commit also goes back to emulating the tail call in 'luaD_precall'
with a goto, as C compilers may not do proper tail calls and the C
stack can overflow much sooner than the Lua stack (which grows as the
metamethod is added to it).
Diffstat (limited to 'ldo.h')
| -rw-r--r-- | ldo.h | 2 |
1 files changed, 1 insertions, 1 deletions
| @@ -58,7 +58,7 @@ LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name, | |||
| 58 | LUAI_FUNC void luaD_hook (lua_State *L, int event, int line, | 58 | LUAI_FUNC void luaD_hook (lua_State *L, int event, int line, |
| 59 | int fTransfer, int nTransfer); | 59 | int fTransfer, int nTransfer); |
| 60 | LUAI_FUNC void luaD_hookcall (lua_State *L, CallInfo *ci); | 60 | LUAI_FUNC void luaD_hookcall (lua_State *L, CallInfo *ci); |
| 61 | LUAI_FUNC void luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int n); | 61 | LUAI_FUNC int luaD_pretailcall (lua_State *L, CallInfo *ci, StkId func, int narg1, int delta); |
| 62 | LUAI_FUNC CallInfo *luaD_precall (lua_State *L, StkId func, int nResults); | 62 | LUAI_FUNC CallInfo *luaD_precall (lua_State *L, StkId func, int nResults); |
| 63 | LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults); | 63 | LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults); |
| 64 | LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults); | 64 | LUAI_FUNC void luaD_callnoyield (lua_State *L, StkId func, int nResults); |