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annotate third_party/luajit/src/lj_clib.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 ** FFI C library loader.
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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 "lj_obj.h"
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7
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8 #if LJ_HASFFI
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9
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10 #include "lj_gc.h"
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11 #include "lj_err.h"
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12 #include "lj_tab.h"
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13 #include "lj_str.h"
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14 #include "lj_udata.h"
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15 #include "lj_ctype.h"
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16 #include "lj_cconv.h"
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17 #include "lj_cdata.h"
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18 #include "lj_clib.h"
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19 #include "lj_strfmt.h"
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20
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21 /* -- OS-specific functions ----------------------------------------------- */
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22
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23 #if LJ_TARGET_DLOPEN
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24
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25 #include <dlfcn.h>
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26 #include <stdio.h>
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27
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28 #if defined(RTLD_DEFAULT) && !defined(NO_RTLD_DEFAULT)
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29 #define CLIB_DEFHANDLE RTLD_DEFAULT
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30 #elif LJ_TARGET_OSX || LJ_TARGET_BSD
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31 #define CLIB_DEFHANDLE ((void *)(intptr_t)-2)
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32 #else
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33 #define CLIB_DEFHANDLE NULL
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34 #endif
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35
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36 LJ_NORET LJ_NOINLINE static void clib_error_(lua_State *L)
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37 {
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38 lj_err_callermsg(L, dlerror());
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39 }
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40
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41 #define clib_error(L, fmt, name) clib_error_(L)
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42
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43 #if LJ_TARGET_CYGWIN
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44 #define CLIB_SOPREFIX "cyg"
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45 #else
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46 #define CLIB_SOPREFIX "lib"
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47 #endif
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48
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49 #if LJ_TARGET_OSX
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50 #define CLIB_SOEXT "%s.dylib"
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51 #elif LJ_TARGET_CYGWIN
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52 #define CLIB_SOEXT "%s.dll"
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53 #else
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54 #define CLIB_SOEXT "%s.so"
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55 #endif
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56
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57 static const char *clib_extname(lua_State *L, const char *name)
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58 {
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59 if (!strchr(name, '/')
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60 #if LJ_TARGET_CYGWIN
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61 && !strchr(name, '\\')
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62 #endif
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63 ) {
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64 if (!strchr(name, '.')) {
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65 name = lj_strfmt_pushf(L, CLIB_SOEXT, name);
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66 L->top--;
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67 #if LJ_TARGET_CYGWIN
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68 } else {
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69 return name;
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70 #endif
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71 }
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72 if (!(name[0] == CLIB_SOPREFIX[0] && name[1] == CLIB_SOPREFIX[1] &&
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73 name[2] == CLIB_SOPREFIX[2])) {
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74 name = lj_strfmt_pushf(L, CLIB_SOPREFIX "%s", name);
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75 L->top--;
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76 }
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77 }
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78 return name;
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79 }
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80
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81 /* Check for a recognized ld script line. */
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82 static const char *clib_check_lds(lua_State *L, const char *buf)
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83 {
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84 char *p, *e;
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85 if ((!strncmp(buf, "GROUP", 5) || !strncmp(buf, "INPUT", 5)) &&
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86 (p = strchr(buf, '('))) {
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87 while (*++p == ' ') ;
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88 for (e = p; *e && *e != ' ' && *e != ')'; e++) ;
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89 return strdata(lj_str_new(L, p, e-p));
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90 }
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91 return NULL;
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92 }
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93
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94 /* Quick and dirty solution to resolve shared library name from ld script. */
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95 static const char *clib_resolve_lds(lua_State *L, const char *name)
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96 {
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97 FILE *fp = fopen(name, "r");
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98 const char *p = NULL;
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99 if (fp) {
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100 char buf[256];
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101 if (fgets(buf, sizeof(buf), fp)) {
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102 if (!strncmp(buf, "/* GNU ld script", 16)) { /* ld script magic? */
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103 while (fgets(buf, sizeof(buf), fp)) { /* Check all lines. */
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104 p = clib_check_lds(L, buf);
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105 if (p) break;
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106 }
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107 } else { /* Otherwise check only the first line. */
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108 p = clib_check_lds(L, buf);
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109 }
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110 }
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111 fclose(fp);
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112 }
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113 return p;
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114 }
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115
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116 static void *clib_loadlib(lua_State *L, const char *name, int global)
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117 {
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118 void *h = dlopen(clib_extname(L, name),
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119 RTLD_LAZY | (global?RTLD_GLOBAL:RTLD_LOCAL));
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120 if (!h) {
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121 const char *e, *err = dlerror();
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122 if (err && *err == '/' && (e = strchr(err, ':')) &&
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123 (name = clib_resolve_lds(L, strdata(lj_str_new(L, err, e-err))))) {
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124 h = dlopen(name, RTLD_LAZY | (global?RTLD_GLOBAL:RTLD_LOCAL));
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125 if (h) return h;
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126 err = dlerror();
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127 }
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128 if (!err) err = "dlopen failed";
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parents:
diff changeset
129 lj_err_callermsg(L, err);
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parents:
diff changeset
130 }
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parents:
diff changeset
131 return h;
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
132 }
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
133
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MrJuneJune <me@mrjunejune.com>
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diff changeset
134 static void clib_unloadlib(CLibrary *cl)
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parents:
diff changeset
135 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
136 if (cl->handle && cl->handle != CLIB_DEFHANDLE)
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MrJuneJune <me@mrjunejune.com>
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diff changeset
137 dlclose(cl->handle);
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
138 }
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diff changeset
139
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MrJuneJune <me@mrjunejune.com>
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diff changeset
140 static void *clib_getsym(CLibrary *cl, const char *name)
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parents:
diff changeset
141 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
142 void *p = dlsym(cl->handle, name);
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
143 return p;
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
144 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
145
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
146 #elif LJ_TARGET_WINDOWS
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147
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MrJuneJune <me@mrjunejune.com>
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diff changeset
148 #define WIN32_LEAN_AND_MEAN
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diff changeset
149 #include <windows.h>
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150
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
151 #ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
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152 #define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 4
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153 #define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT 2
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154 BOOL WINAPI GetModuleHandleExA(DWORD, LPCSTR, HMODULE*);
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MrJuneJune <me@mrjunejune.com>
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155 #endif
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MrJuneJune <me@mrjunejune.com>
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156
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MrJuneJune <me@mrjunejune.com>
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157 #define CLIB_DEFHANDLE ((void *)-1)
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158
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MrJuneJune <me@mrjunejune.com>
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159 /* Default libraries. */
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MrJuneJune <me@mrjunejune.com>
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diff changeset
160 enum {
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MrJuneJune <me@mrjunejune.com>
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161 CLIB_HANDLE_EXE,
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MrJuneJune <me@mrjunejune.com>
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162 #if !LJ_TARGET_UWP
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MrJuneJune <me@mrjunejune.com>
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163 CLIB_HANDLE_DLL,
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MrJuneJune <me@mrjunejune.com>
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164 CLIB_HANDLE_CRT,
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MrJuneJune <me@mrjunejune.com>
parents:
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165 CLIB_HANDLE_KERNEL32,
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MrJuneJune <me@mrjunejune.com>
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166 CLIB_HANDLE_USER32,
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MrJuneJune <me@mrjunejune.com>
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167 CLIB_HANDLE_GDI32,
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MrJuneJune <me@mrjunejune.com>
parents:
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168 #endif
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MrJuneJune <me@mrjunejune.com>
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169 CLIB_HANDLE_MAX
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MrJuneJune <me@mrjunejune.com>
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170 };
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171
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MrJuneJune <me@mrjunejune.com>
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172 static void *clib_def_handle[CLIB_HANDLE_MAX];
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MrJuneJune <me@mrjunejune.com>
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173
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MrJuneJune <me@mrjunejune.com>
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174 LJ_NORET LJ_NOINLINE static void clib_error(lua_State *L, const char *fmt,
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175 const char *name)
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MrJuneJune <me@mrjunejune.com>
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176 {
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MrJuneJune <me@mrjunejune.com>
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177 DWORD err = GetLastError();
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MrJuneJune <me@mrjunejune.com>
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diff changeset
178 #if LJ_TARGET_XBOXONE
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MrJuneJune <me@mrjunejune.com>
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179 wchar_t wbuf[128];
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MrJuneJune <me@mrjunejune.com>
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diff changeset
180 char buf[128*2];
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
181 if (!FormatMessageW(FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_FROM_SYSTEM,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
182 NULL, err, 0, wbuf, sizeof(wbuf)/sizeof(wchar_t), NULL) ||
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
183 !WideCharToMultiByte(CP_ACP, 0, wbuf, 128, buf, 128*2, NULL, NULL))
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
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184 #else
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
185 char buf[128];
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
186 if (!FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_FROM_SYSTEM,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
187 NULL, err, 0, buf, sizeof(buf), NULL))
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
188 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
189 buf[0] = '\0';
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
190 lj_err_callermsg(L, lj_strfmt_pushf(L, fmt, name, buf));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
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191 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
192
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
193 static int clib_needext(const char *s)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
194 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
195 while (*s) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
196 if (*s == '/' || *s == '\\' || *s == '.') return 0;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
197 s++;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
198 }
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
199 return 1;
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
200 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
201
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
202 static const char *clib_extname(lua_State *L, const char *name)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
203 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
204 if (clib_needext(name)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
205 name = lj_strfmt_pushf(L, "%s.dll", name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
206 L->top--;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
207 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
208 return name;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
209 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
210
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
211 static void *clib_loadlib(lua_State *L, const char *name, int global)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
212 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
213 DWORD oldwerr = GetLastError();
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
214 void *h = LJ_WIN_LOADLIBA(clib_extname(L, name));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
215 if (!h) clib_error(L, "cannot load module " LUA_QS ": %s", name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
216 SetLastError(oldwerr);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
217 UNUSED(global);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
218 return h;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
219 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
220
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
221 static void clib_unloadlib(CLibrary *cl)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
222 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
223 if (cl->handle == CLIB_DEFHANDLE) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
224 #if !LJ_TARGET_UWP
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
225 MSize i;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
226 for (i = CLIB_HANDLE_KERNEL32; i < CLIB_HANDLE_MAX; i++) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
227 void *h = clib_def_handle[i];
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
228 if (h) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
229 clib_def_handle[i] = NULL;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
230 FreeLibrary((HINSTANCE)h);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
231 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
232 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
233 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
234 } else if (cl->handle) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
235 FreeLibrary((HINSTANCE)cl->handle);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
236 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
237 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
238
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
239 #if LJ_TARGET_UWP
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
240 EXTERN_C IMAGE_DOS_HEADER __ImageBase;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
241 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
242
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
243 static void *clib_getsym(CLibrary *cl, const char *name)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
244 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
245 void *p = NULL;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
246 if (cl->handle == CLIB_DEFHANDLE) { /* Search default libraries. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
247 MSize i;
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
248 for (i = 0; i < CLIB_HANDLE_MAX; i++) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
249 HINSTANCE h = (HINSTANCE)clib_def_handle[i];
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
250 if (!(void *)h) { /* Resolve default library handles (once). */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
251 #if LJ_TARGET_UWP
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
252 h = (HINSTANCE)&__ImageBase;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
253 #else
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
254 switch (i) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
255 case CLIB_HANDLE_EXE: GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, NULL, &h); break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
256 case CLIB_HANDLE_DLL:
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
257 GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS|GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
258 (const char *)clib_def_handle, &h);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
259 break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
260 case CLIB_HANDLE_CRT:
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
261 GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS|GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
262 (const char *)&_fmode, &h);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
263 break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
264 case CLIB_HANDLE_KERNEL32: h = LJ_WIN_LOADLIBA("kernel32.dll"); break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
265 case CLIB_HANDLE_USER32: h = LJ_WIN_LOADLIBA("user32.dll"); break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
266 case CLIB_HANDLE_GDI32: h = LJ_WIN_LOADLIBA("gdi32.dll"); break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
267 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
268 if (!h) continue;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
269 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
270 clib_def_handle[i] = (void *)h;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
271 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
272 p = (void *)GetProcAddress(h, name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
273 if (p) break;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
274 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
275 } else {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
276 p = (void *)GetProcAddress((HINSTANCE)cl->handle, name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
277 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
278 return p;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
279 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
280
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
281 #else
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
282
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
283 #define CLIB_DEFHANDLE NULL
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
284
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
285 LJ_NORET LJ_NOINLINE static void clib_error(lua_State *L, const char *fmt,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
286 const char *name)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
287 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
288 lj_err_callermsg(L, lj_strfmt_pushf(L, fmt, name, "no support for this OS"));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
289 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
290
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
291 static void *clib_loadlib(lua_State *L, const char *name, int global)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
292 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
293 lj_err_callermsg(L, "no support for loading dynamic libraries for this OS");
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
294 UNUSED(name); UNUSED(global);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
295 return NULL;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
296 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
297
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
298 static void clib_unloadlib(CLibrary *cl)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
299 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
300 UNUSED(cl);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
301 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
302
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
303 static void *clib_getsym(CLibrary *cl, const char *name)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
304 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
305 UNUSED(cl); UNUSED(name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
306 return NULL;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
307 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
308
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
309 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
310
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
311 /* -- C library indexing -------------------------------------------------- */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
312
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
313 #if LJ_TARGET_X86 && LJ_ABI_WIN
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
314 /* Compute argument size for fastcall/stdcall functions. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
315 static CTSize clib_func_argsize(CTState *cts, CType *ct)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
316 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
317 CTSize n = 0;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
318 while (ct->sib) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
319 CType *d;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
320 ct = ctype_get(cts, ct->sib);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
321 if (ctype_isfield(ct->info)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
322 d = ctype_rawchild(cts, ct);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
323 n += ((d->size + 3) & ~3);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
324 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
325 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
326 return n;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
327 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
328 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
329
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
330 /* Get redirected or mangled external symbol. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
331 static const char *clib_extsym(CTState *cts, CType *ct, GCstr *name)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
332 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
333 if (ct->sib) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
334 CType *ctf = ctype_get(cts, ct->sib);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
335 if (ctype_isxattrib(ctf->info, CTA_REDIR))
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
336 return strdata(gco2str(gcref(ctf->name)));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
337 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
338 return strdata(name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
339 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
340
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
341 /* Index a C library by name. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
342 TValue *lj_clib_index(lua_State *L, CLibrary *cl, GCstr *name)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
343 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
344 TValue *tv = lj_tab_setstr(L, cl->cache, name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
345 if (LJ_UNLIKELY(tvisnil(tv))) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
346 CTState *cts = ctype_cts(L);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
347 CType *ct;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
348 CTypeID id = lj_ctype_getname(cts, &ct, name, CLNS_INDEX);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
349 if (!id)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
350 lj_err_callerv(L, LJ_ERR_FFI_NODECL, strdata(name));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
351 if (ctype_isconstval(ct->info)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
352 CType *ctt = ctype_child(cts, ct);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
353 lj_assertCTS(ctype_isinteger(ctt->info) && ctt->size <= 4,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
354 "only 32 bit const supported"); /* NYI */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
355 if ((ctt->info & CTF_UNSIGNED) && (int32_t)ct->size < 0)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
356 setnumV(tv, (lua_Number)(uint32_t)ct->size);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
357 else
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
358 setintV(tv, (int32_t)ct->size);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
359 } else {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
360 const char *sym = clib_extsym(cts, ct, name);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
361 #if LJ_TARGET_WINDOWS
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
362 DWORD oldwerr = GetLastError();
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
363 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
364 void *p = clib_getsym(cl, sym);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
365 GCcdata *cd;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
366 lj_assertCTS(ctype_isfunc(ct->info) || ctype_isextern(ct->info),
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
367 "unexpected ctype %08x in clib", ct->info);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
368 #if LJ_TARGET_X86 && LJ_ABI_WIN
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
369 /* Retry with decorated name for fastcall/stdcall functions. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
370 if (!p && ctype_isfunc(ct->info)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
371 CTInfo cconv = ctype_cconv(ct->info);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
372 if (cconv == CTCC_FASTCALL || cconv == CTCC_STDCALL) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
373 CTSize sz = clib_func_argsize(cts, ct);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
374 const char *symd = lj_strfmt_pushf(L,
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
375 cconv == CTCC_FASTCALL ? "@%s@%d" : "_%s@%d",
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
376 sym, sz);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
377 L->top--;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
378 p = clib_getsym(cl, symd);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
379 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
380 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
381 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
382 if (!p)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
383 clib_error(L, "cannot resolve symbol " LUA_QS ": %s", sym);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
384 #if LJ_TARGET_WINDOWS
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
385 SetLastError(oldwerr);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
386 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
387 cd = lj_cdata_new(cts, id, CTSIZE_PTR);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
388 *(void **)cdataptr(cd) = p;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
389 setcdataV(L, tv, cd);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
390 lj_gc_anybarriert(L, cl->cache);
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391 }
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392 }
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393 return tv;
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394 }
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395
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396 /* -- C library management ------------------------------------------------ */
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397
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398 /* Create a new CLibrary object and push it on the stack. */
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399 static CLibrary *clib_new(lua_State *L, GCtab *mt)
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400 {
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401 GCtab *t = lj_tab_new(L, 0, 0);
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402 GCudata *ud = lj_udata_new(L, sizeof(CLibrary), t);
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403 CLibrary *cl = (CLibrary *)uddata(ud);
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404 cl->cache = t;
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405 ud->udtype = UDTYPE_FFI_CLIB;
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406 /* NOBARRIER: The GCudata is new (marked white). */
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407 setgcref(ud->metatable, obj2gco(mt));
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408 setudataV(L, L->top++, ud);
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409 return cl;
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410 }
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411
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412 /* Load a C library. */
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413 void lj_clib_load(lua_State *L, GCtab *mt, GCstr *name, int global)
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414 {
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415 void *handle = clib_loadlib(L, strdata(name), global);
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416 CLibrary *cl = clib_new(L, mt);
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417 cl->handle = handle;
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418 }
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419
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420 /* Unload a C library. */
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421 void lj_clib_unload(CLibrary *cl)
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422 {
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423 clib_unloadlib(cl);
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424 cl->handle = NULL;
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425 }
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426
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427 /* Create the default C library object. */
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428 void lj_clib_default(lua_State *L, GCtab *mt)
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429 {
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430 CLibrary *cl = clib_new(L, mt);
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431 cl->handle = CLIB_DEFHANDLE;
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432 }
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433
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434 #endif