void LJ_FASTCALL lj_profile_hook_leave(global_State *g) { ProfileState *ps = &profile_state; if (ps->g) { profile_lock(ps); hook_leave(g); profile_unlock(ps); } else { hook_leave(g); } }
/* Call a hook. */ static void callhook(lua_State *L, int event, BCLine line) { global_State *g = G(L); lua_Hook hookf = g->hookf; if (hookf && !hook_active(g)) { lua_Debug ar; lj_trace_abort(g); /* Abort recording on any hook call. */ ar.event = event; ar.currentline = line; ar.i_ci = cast_int((L->base-1) - L->stack); /* Top frame, nextframe=NULL. */ lj_state_checkstack(L, 1+LUA_MINSTACK); hook_enter(g); hookf(L, &ar); lua_assert(hook_active(g)); hook_leave(g); } }
/* Unwind until stop frame. Optionally cleanup frames. */ static void *err_unwind(lua_State *L, void *stopcf, int errcode) { TValue *frame = L->base-1; void *cf = L->cframe; while (cf) { int32_t nres = cframe_nres(cframe_raw(cf)); if (nres < 0) { /* C frame without Lua frame? */ TValue *top = restorestack(L, -nres); if (frame < top) { /* Frame reached? */ if (errcode) { L->cframe = cframe_prev(cf); L->base = frame+1; unwindstack(L, top); } return cf; } } if (frame <= tvref(L->stack)) break; switch (frame_typep(frame)) { case FRAME_LUA: /* Lua frame. */ case FRAME_LUAP: frame = frame_prevl(frame); break; case FRAME_C: /* C frame. */ #if LJ_UNWIND_EXT if (errcode) { L->cframe = cframe_prev(cf); L->base = frame_prevd(frame) + 1; unwindstack(L, frame); } else if (cf != stopcf) { cf = cframe_prev(cf); frame = frame_prevd(frame); break; } return NULL; /* Continue unwinding. */ #else UNUSED(stopcf); cf = cframe_prev(cf); frame = frame_prevd(frame); break; #endif case FRAME_CP: /* Protected C frame. */ if (cframe_canyield(cf)) { /* Resume? */ if (errcode) { L->cframe = NULL; L->status = (uint8_t)errcode; } return cf; } if (errcode) { L->cframe = cframe_prev(cf); L->base = frame_prevd(frame) + 1; unwindstack(L, frame); } return cf; case FRAME_CONT: /* Continuation frame. */ case FRAME_VARG: /* Vararg frame. */ frame = frame_prevd(frame); break; case FRAME_PCALL: /* FF pcall() frame. */ case FRAME_PCALLH: /* FF pcall() frame inside hook. */ if (errcode) { if (errcode == LUA_YIELD) { frame = frame_prevd(frame); break; } if (frame_typep(frame) == FRAME_PCALL) hook_leave(G(L)); L->cframe = cf; L->base = frame_prevd(frame) + 1; unwindstack(L, L->base); } return (void *)((intptr_t)cf | CFRAME_UNWIND_FF); } } /* No C frame. */ if (errcode) { L->cframe = NULL; L->base = tvref(L->stack)+1; unwindstack(L, L->base); if (G(L)->panic) G(L)->panic(L); exit(EXIT_FAILURE); } return L; /* Anything non-NULL will do. */ }