xref: /PHP-7.3/Zend/zend_globals.h (revision bd6eabd6)
1 /*
2    +----------------------------------------------------------------------+
3    | Zend Engine                                                          |
4    +----------------------------------------------------------------------+
5    | Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
6    +----------------------------------------------------------------------+
7    | This source file is subject to version 2.00 of the Zend license,     |
8    | that is bundled with this package in the file LICENSE, and is        |
9    | available through the world-wide-web at the following url:           |
10    | http://www.zend.com/license/2_00.txt.                                |
11    | If you did not receive a copy of the Zend license and are unable to  |
12    | obtain it through the world-wide-web, please send a note to          |
13    | license@zend.com so we can mail you a copy immediately.              |
14    +----------------------------------------------------------------------+
15    | Authors: Andi Gutmans <andi@php.net>                                 |
16    |          Zeev Suraski <zeev@php.net>                                 |
17    +----------------------------------------------------------------------+
18 */
19 
20 #ifndef ZEND_GLOBALS_H
21 #define ZEND_GLOBALS_H
22 
23 
24 #include <setjmp.h>
25 
26 #include "zend_globals_macros.h"
27 
28 #include "zend_stack.h"
29 #include "zend_ptr_stack.h"
30 #include "zend_hash.h"
31 #include "zend_llist.h"
32 #include "zend_objects.h"
33 #include "zend_objects_API.h"
34 #include "zend_modules.h"
35 #include "zend_float.h"
36 #include "zend_multibyte.h"
37 #include "zend_multiply.h"
38 #include "zend_arena.h"
39 
40 /* Define ZTS if you want a thread-safe Zend */
41 /*#undef ZTS*/
42 
43 #ifdef ZTS
44 
45 BEGIN_EXTERN_C()
46 ZEND_API extern int compiler_globals_id;
47 ZEND_API extern int executor_globals_id;
48 END_EXTERN_C()
49 
50 #endif
51 
52 #define SYMTABLE_CACHE_SIZE 32
53 
54 
55 #include "zend_compile.h"
56 
57 /* excpt.h on Digital Unix 4.0 defines function_table */
58 #undef function_table
59 
60 #define ZEND_EARLY_BINDING_COMPILE_TIME 0
61 #define ZEND_EARLY_BINDING_DELAYED      1
62 #define ZEND_EARLY_BINDING_DELAYED_ALL  2
63 
64 typedef struct _zend_vm_stack *zend_vm_stack;
65 typedef struct _zend_ini_entry zend_ini_entry;
66 
67 
68 struct _zend_compiler_globals {
69 	zend_stack loop_var_stack;
70 
71 	zend_class_entry *active_class_entry;
72 
73 	zend_string *compiled_filename;
74 
75 	int zend_lineno;
76 
77 	zend_op_array *active_op_array;
78 
79 	HashTable *function_table;	/* function symbol table */
80 	HashTable *class_table;		/* class table */
81 
82 	HashTable filenames_table;
83 
84 	HashTable *auto_globals;
85 
86 	zend_bool parse_error;
87 	zend_bool in_compilation;
88 	zend_bool short_tags;
89 
90 	zend_bool unclean_shutdown;
91 
92 	zend_bool ini_parser_unbuffered_errors;
93 
94 	zend_llist open_files;
95 
96 	struct _zend_ini_parser_param *ini_parser_param;
97 
98 	uint32_t start_lineno;
99 	zend_bool increment_lineno;
100 
101 	zend_string *doc_comment;
102 	uint32_t extra_fn_flags;
103 
104 	uint32_t compiler_options; /* set of ZEND_COMPILE_* constants */
105 
106 	zend_oparray_context context;
107 	zend_file_context file_context;
108 
109 	zend_arena *arena;
110 
111 	HashTable interned_strings;
112 
113 	const zend_encoding **script_encoding_list;
114 	size_t script_encoding_list_size;
115 	zend_bool multibyte;
116 	zend_bool detect_unicode;
117 	zend_bool encoding_declared;
118 
119 	zend_ast *ast;
120 	zend_arena *ast_arena;
121 
122 	zend_stack delayed_oplines_stack;
123 
124 #ifdef ZTS
125 	zval **static_members_table;
126 	int last_static_member;
127 #endif
128 };
129 
130 
131 struct _zend_executor_globals {
132 	zval uninitialized_zval;
133 	zval error_zval;
134 
135 	/* symbol table cache */
136 	zend_array *symtable_cache[SYMTABLE_CACHE_SIZE];
137 	zend_array **symtable_cache_limit;
138 	zend_array **symtable_cache_ptr;
139 
140 	zend_array symbol_table;		/* main symbol table */
141 
142 	HashTable included_files;	/* files already included */
143 
144 	JMP_BUF *bailout;
145 
146 	int error_reporting;
147 	int exit_status;
148 
149 	HashTable *function_table;	/* function symbol table */
150 	HashTable *class_table;		/* class table */
151 	HashTable *zend_constants;	/* constants table */
152 
153 	zval          *vm_stack_top;
154 	zval          *vm_stack_end;
155 	zend_vm_stack  vm_stack;
156 	size_t         vm_stack_page_size;
157 
158 	struct _zend_execute_data *current_execute_data;
159 	zend_class_entry *fake_scope; /* used to avoid checks accessing properties */
160 
161 	zend_long precision;
162 
163 	int ticks_count;
164 
165 	uint32_t persistent_constants_count;
166 	uint32_t persistent_functions_count;
167 	uint32_t persistent_classes_count;
168 
169 	HashTable *in_autoload;
170 	zend_function *autoload_func;
171 	zend_bool full_tables_cleanup;
172 
173 	/* for extended information support */
174 	zend_bool no_extensions;
175 
176 	zend_bool vm_interrupt;
177 	zend_bool timed_out;
178 	zend_long hard_timeout;
179 
180 #ifdef ZEND_WIN32
181 	OSVERSIONINFOEX windows_version_info;
182 #endif
183 
184 	HashTable regular_list;
185 	HashTable persistent_list;
186 
187 	int user_error_handler_error_reporting;
188 	zval user_error_handler;
189 	zval user_exception_handler;
190 	zend_stack user_error_handlers_error_reporting;
191 	zend_stack user_error_handlers;
192 	zend_stack user_exception_handlers;
193 
194 	zend_error_handling_t  error_handling;
195 	zend_class_entry      *exception_class;
196 
197 	/* timeout support */
198 	zend_long timeout_seconds;
199 
200 	int lambda_count;
201 
202 	HashTable *ini_directives;
203 	HashTable *modified_ini_directives;
204 	zend_ini_entry *error_reporting_ini_entry;
205 
206 	zend_objects_store objects_store;
207 	zend_object *exception, *prev_exception;
208 	const zend_op *opline_before_exception;
209 	zend_op exception_op[3];
210 
211 	struct _zend_module_entry *current_module;
212 
213 	zend_bool active;
214 	zend_uchar flags;
215 
216 	zend_long assertions;
217 
218 	uint32_t           ht_iterators_count;     /* number of allocatd slots */
219 	uint32_t           ht_iterators_used;      /* number of used slots */
220 	HashTableIterator *ht_iterators;
221 	HashTableIterator  ht_iterators_slots[16];
222 
223 	void *saved_fpu_cw_ptr;
224 #if XPFPA_HAVE_CW
225 	XPFPA_CW_DATATYPE saved_fpu_cw;
226 #endif
227 
228 	zend_function trampoline;
229 	zend_op       call_trampoline_op;
230 
231 	zend_bool each_deprecation_thrown;
232 
233 	void *reserved[ZEND_MAX_RESERVED_RESOURCES];
234 };
235 
236 #define EG_FLAGS_INITIAL				(0)
237 #define EG_FLAGS_IN_SHUTDOWN			(1<<0)
238 #define EG_FLAGS_OBJECT_STORE_NO_REUSE	(1<<1)
239 
240 struct _zend_ini_scanner_globals {
241 	zend_file_handle *yy_in;
242 	zend_file_handle *yy_out;
243 
244 	unsigned int yy_leng;
245 	unsigned char *yy_start;
246 	unsigned char *yy_text;
247 	unsigned char *yy_cursor;
248 	unsigned char *yy_marker;
249 	unsigned char *yy_limit;
250 	int yy_state;
251 	zend_stack state_stack;
252 
253 	char *filename;
254 	int lineno;
255 
256 	/* Modes are: ZEND_INI_SCANNER_NORMAL, ZEND_INI_SCANNER_RAW, ZEND_INI_SCANNER_TYPED */
257 	int scanner_mode;
258 };
259 
260 typedef enum {
261 	ON_TOKEN,
262 	ON_FEEDBACK,
263 	ON_STOP
264 } zend_php_scanner_event;
265 
266 struct _zend_php_scanner_globals {
267 	zend_file_handle *yy_in;
268 	zend_file_handle *yy_out;
269 
270 	unsigned int yy_leng;
271 	unsigned char *yy_start;
272 	unsigned char *yy_text;
273 	unsigned char *yy_cursor;
274 	unsigned char *yy_marker;
275 	unsigned char *yy_limit;
276 	int yy_state;
277 	zend_stack state_stack;
278 	zend_ptr_stack heredoc_label_stack;
279 	zend_bool heredoc_scan_ahead;
280 	int heredoc_indentation;
281 	zend_bool heredoc_indentation_uses_spaces;
282 
283 	/* original (unfiltered) script */
284 	unsigned char *script_org;
285 	size_t script_org_size;
286 
287 	/* filtered script */
288 	unsigned char *script_filtered;
289 	size_t script_filtered_size;
290 
291 	/* input/output filters */
292 	zend_encoding_filter input_filter;
293 	zend_encoding_filter output_filter;
294 	const zend_encoding *script_encoding;
295 
296 	/* initial string length after scanning to first variable */
297 	int scanned_string_len;
298 
299 	/* hooks */
300 	void (*on_event)(zend_php_scanner_event event, int token, int line, void *context);
301 	void *on_event_context;
302 };
303 
304 #endif /* ZEND_GLOBALS_H */
305 
306 /*
307  * Local variables:
308  * tab-width: 4
309  * c-basic-offset: 4
310  * indent-tabs-mode: t
311  * End:
312  * vim600: sw=4 ts=4 fdm=marker
313  * vim<600: sw=4 ts=4
314  */
315