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annotate third_party/luajit/src/lj_vmevent.c @ 279:b3b547563ec7

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Add Google connector service and agent wiki Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code. Co-authored-by: Copilot <[email protected]> Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
author MrJuneJune <me@mrjunejune.com>
date Mon, 17 Aug 2026 22:22:36 -0700
parents 94705b5986b3
children
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178
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1 /*
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2 ** VM event handling.
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
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4 */
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5
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6 #include <stdio.h>
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7
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8 #define lj_vmevent_c
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9 #define LUA_CORE
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10
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11 #include "lj_obj.h"
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12 #include "lj_str.h"
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13 #include "lj_tab.h"
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14 #include "lj_state.h"
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15 #include "lj_dispatch.h"
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16 #include "lj_vm.h"
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17 #include "lj_vmevent.h"
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18
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19 ptrdiff_t lj_vmevent_prepare(lua_State *L, VMEvent ev)
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20 {
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21 global_State *g = G(L);
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22 GCstr *s = lj_str_newlit(L, LJ_VMEVENTS_REGKEY);
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23 cTValue *tv = lj_tab_getstr(tabV(registry(L)), s);
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24 if (tvistab(tv)) {
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25 int hash = VMEVENT_HASH(ev);
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26 tv = lj_tab_getint(tabV(tv), hash);
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27 if (tv && tvisfunc(tv)) {
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28 lj_state_checkstack(L, LUA_MINSTACK);
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29 setfuncV(L, L->top++, funcV(tv));
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30 if (LJ_FR2) setnilV(L->top++);
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31 return savestack(L, L->top);
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32 }
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33 }
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34 g->vmevmask &= ~VMEVENT_MASK(ev); /* No handler: cache this fact. */
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35 return 0;
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36 }
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37
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38 void lj_vmevent_call(lua_State *L, ptrdiff_t argbase)
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39 {
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40 global_State *g = G(L);
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41 uint8_t oldmask = g->vmevmask;
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42 uint8_t oldh = hook_save(g);
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43 int status;
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44 g->vmevmask = 0; /* Disable all events. */
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45 hook_vmevent(g);
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46 status = lj_vm_pcall(L, restorestack(L, argbase), 0+1, 0);
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47 if (LJ_UNLIKELY(status)) {
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48 /* Really shouldn't use stderr here, but where else to complain? */
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49 L->top--;
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50 fputs("VM handler failed: ", stderr);
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51 fputs(tvisstr(L->top) ? strVdata(L->top) : "?", stderr);
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52 fputc('\n', stderr);
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53 }
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54 hook_restore(g, oldh);
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55 if (g->vmevmask != VMEVENT_NOCACHE)
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56 g->vmevmask = oldmask; /* Restore event mask, but not if not modified. */
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57 }
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58