| 771 | |
| 772 | |
| 773 | LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs, |
| 774 | int *nresults) { |
| 775 | int status; |
| 776 | lua_lock(L); |
| 777 | if (L->status == LUA_OK) { /* may be starting a coroutine */ |
| 778 | if (L->ci != &L->base_ci) /* not in base level? */ |
| 779 | return resume_error(L, "cannot resume non-suspended coroutine", nargs); |
| 780 | else if (L->top - (L->ci->func + 1) == nargs) /* no function? */ |
| 781 | return resume_error(L, "cannot resume dead coroutine", nargs); |
| 782 | } |
| 783 | else if (L->status != LUA_YIELD) /* ended with errors? */ |
| 784 | return resume_error(L, "cannot resume dead coroutine", nargs); |
| 785 | L->nCcalls = (from) ? getCcalls(from) : 0; |
| 786 | luai_userstateresume(L, nargs); |
| 787 | api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs); |
| 788 | status = luaD_rawrunprotected(L, resume, &nargs); |
| 789 | /* continue running after recoverable errors */ |
| 790 | status = precover(L, status); |
| 791 | if (l_likely(!errorstatus(status))) |
| 792 | lua_assert(status == L->status); /* normal end or yield */ |
| 793 | else { /* unrecoverable error */ |
| 794 | L->status = cast_byte(status); /* mark thread as 'dead' */ |
| 795 | luaD_seterrorobj(L, status, L->top); /* push error message */ |
| 796 | L->ci->top = L->top; |
| 797 | } |
| 798 | *nresults = (status == LUA_YIELD) ? L->ci->u2.nyield |
| 799 | : cast_int(L->top - (L->ci->func + 1)); |
| 800 | lua_unlock(L); |
| 801 | return status; |
| 802 | } |
| 803 | |
| 804 | |
| 805 | LUA_API int lua_isyieldable (lua_State *L) { |
no test coverage detected