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php-src/ext/opcache/ZendAccelerator.h
Xinchen Hui ccd4716ec7 year++
2018-01-02 12:53:31 +08:00

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/*
+----------------------------------------------------------------------+
| Zend OPcache |
+----------------------------------------------------------------------+
| Copyright (c) 1998-2018 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
| Stanislav Malyshev <stas@zend.com> |
| Dmitry Stogov <dmitry@zend.com> |
+----------------------------------------------------------------------+
*/
#ifndef ZEND_ACCELERATOR_H
#define ZEND_ACCELERATOR_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#define ACCELERATOR_PRODUCT_NAME "Zend OPcache"
/* 2 - added Profiler support, on 20010712 */
/* 3 - added support for Optimizer's encoded-only-files mode */
/* 4 - works with the new Optimizer, that supports the file format with licenses */
/* 5 - API 4 didn't really work with the license-enabled file format. v5 does. */
/* 6 - Monitor was removed from ZendPlatform.so, to a module of its own */
/* 7 - Optimizer was embedded into Accelerator */
/* 8 - Standalone Open Source Zend OPcache */
#define ACCELERATOR_API_NO 8
#if ZEND_WIN32
# include "zend_config.w32.h"
#else
#include "zend_config.h"
# include <sys/time.h>
# include <sys/resource.h>
#endif
#if HAVE_UNISTD_H
# include "unistd.h"
#endif
#include "zend_extensions.h"
#include "zend_compile.h"
#include "Optimizer/zend_optimizer.h"
#include "zend_accelerator_hash.h"
#include "zend_accelerator_debug.h"
#ifndef PHPAPI
# ifdef ZEND_WIN32
# define PHPAPI __declspec(dllimport)
# else
# define PHPAPI
# endif
#endif
#ifndef ZEND_EXT_API
# if WIN32|WINNT
# define ZEND_EXT_API __declspec(dllexport)
# elif defined(__GNUC__) && __GNUC__ >= 4
# define ZEND_EXT_API __attribute__ ((visibility("default")))
# else
# define ZEND_EXT_API
# endif
#endif
#ifdef ZEND_WIN32
# ifndef MAXPATHLEN
# include "win32/ioutil.h"
# define MAXPATHLEN PHP_WIN32_IOUTIL_MAXPATHLEN
# endif
# include <direct.h>
#else
# ifndef MAXPATHLEN
# define MAXPATHLEN 4096
# endif
# include <sys/param.h>
#endif
/*** file locking ***/
#ifndef ZEND_WIN32
extern int lock_file;
# if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || (defined(__APPLE__) && defined(__MACH__)/* Darwin */) || defined(__OpenBSD__) || defined(__NetBSD__)
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {start, len, -1, type, whence}
# elif defined(__svr4__)
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {type, whence, start, len}
# elif defined(__linux__) || defined(__hpux) || defined(__GNU__)
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {type, whence, start, len, 0}
# elif defined(_AIX)
# if defined(_LARGE_FILES) || defined(__64BIT__)
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {type, whence, 0, 0, 0, start, len }
# else
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {type, whence, start, len}
# endif
# elif defined(HAVE_FLOCK_BSD)
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {start, len, -1, type, whence}
# elif defined(HAVE_FLOCK_LINUX)
# define FLOCK_STRUCTURE(name, type, whence, start, len) \
struct flock name = {type, whence, start, len}
# else
# error "Don't know how to define struct flock"
# endif
#endif
#if defined(HAVE_OPCACHE_FILE_CACHE) && defined(ZEND_WIN32)
# define ENABLE_FILE_CACHE_FALLBACK 1
#endif
#if ZEND_WIN32
typedef unsigned __int64 accel_time_t;
#else
typedef time_t accel_time_t;
#endif
typedef enum _zend_accel_restart_reason {
ACCEL_RESTART_OOM, /* restart because of out of memory */
ACCEL_RESTART_HASH, /* restart because of hash overflow */
ACCEL_RESTART_USER /* restart scheduled by opcache_reset() */
} zend_accel_restart_reason;
typedef struct _zend_persistent_script {
zend_script script;
zend_long compiler_halt_offset; /* position of __HALT_COMPILER or -1 */
int ping_auto_globals_mask; /* which autoglobals are used by the script */
accel_time_t timestamp; /* the script modification time */
zend_bool corrupted;
zend_bool is_phar;
void *mem; /* shared memory area used by script structures */
size_t size; /* size of used shared memory */
void *arena_mem; /* part that should be copied into process */
size_t arena_size;
/* All entries that shouldn't be counted in the ADLER32
* checksum must be declared in this struct
*/
struct zend_persistent_script_dynamic_members {
time_t last_used;
#ifdef ZEND_WIN32
LONGLONG hits;
#else
zend_ulong hits;
#endif
unsigned int memory_consumption;
unsigned int checksum;
time_t revalidate;
} dynamic_members;
} zend_persistent_script;
typedef struct _zend_accel_directives {
zend_long memory_consumption;
zend_long max_accelerated_files;
double max_wasted_percentage;
char *user_blacklist_filename;
zend_long consistency_checks;
zend_long force_restart_timeout;
zend_bool use_cwd;
zend_bool ignore_dups;
zend_bool validate_timestamps;
zend_bool revalidate_path;
zend_bool save_comments;
zend_bool fast_shutdown;
zend_bool protect_memory;
zend_bool file_override_enabled;
zend_bool inherited_hack;
zend_bool enable_cli;
zend_bool validate_permission;
#ifndef ZEND_WIN32
zend_bool validate_root;
#endif
zend_ulong revalidate_freq;
zend_ulong file_update_protection;
char *error_log;
#ifdef ZEND_WIN32
char *mmap_base;
#endif
char *memory_model;
zend_long log_verbosity_level;
zend_long optimization_level;
zend_long opt_debug_level;
zend_long max_file_size;
zend_long interned_strings_buffer;
char *restrict_api;
#ifndef ZEND_WIN32
char *lockfile_path;
#endif
#ifdef HAVE_OPCACHE_FILE_CACHE
char *file_cache;
zend_bool file_cache_only;
zend_bool file_cache_consistency_checks;
#endif
#if ENABLE_FILE_CACHE_FALLBACK
zend_bool file_cache_fallback;
#endif
#ifdef HAVE_HUGE_CODE_PAGES
zend_bool huge_code_pages;
#endif
} zend_accel_directives;
typedef struct _zend_accel_globals {
/* copy of CG(function_table) used for compilation scripts into cache */
/* initially it contains only internal functions */
HashTable function_table;
int internal_functions_count;
int counted; /* the process uses shared memory */
zend_bool enabled;
zend_bool locked; /* thread obtained exclusive lock */
HashTable bind_hash; /* prototype and zval lookup table */
zend_accel_directives accel_directives;
zend_string *cwd; /* current working directory or NULL */
zend_string *include_path; /* current value of "include_path" directive */
char include_path_key[32]; /* key of current "include_path" */
char cwd_key[32]; /* key of current working directory */
int include_path_key_len;
int include_path_check;
int cwd_key_len;
int cwd_check;
int auto_globals_mask;
time_t request_time;
time_t last_restart_time; /* used to synchronize SHM and in-process caches */
char system_id[32];
HashTable xlat_table;
#ifndef ZEND_WIN32
zend_ulong root_hash;
#endif
/* preallocated shared-memory block to save current script */
void *mem;
void *arena_mem;
zend_persistent_script *current_persistent_script;
/* cache to save hash lookup on the same INCLUDE opcode */
const zend_op *cache_opline;
zend_persistent_script *cache_persistent_script;
/* preallocated buffer for keys */
int key_len;
char key[MAXPATHLEN * 8];
} zend_accel_globals;
typedef struct _zend_accel_shared_globals {
/* Cache Data Structures */
zend_ulong hits;
zend_ulong misses;
zend_ulong blacklist_misses;
zend_ulong oom_restarts; /* number of restarts because of out of memory */
zend_ulong hash_restarts; /* number of restarts because of hash overflow */
zend_ulong manual_restarts; /* number of restarts scheduled by opcache_reset() */
zend_accel_hash hash; /* hash table for cached scripts */
/* Directives & Maintenance */
time_t start_time;
time_t last_restart_time;
time_t force_restart_time;
zend_bool accelerator_enabled;
zend_bool restart_pending;
zend_accel_restart_reason restart_reason;
zend_bool cache_status_before_restart;
#ifdef ZEND_WIN32
LONGLONG mem_usage;
LONGLONG restart_in;
#endif
zend_bool restart_in_progress;
/* Interned Strings Support */
char *interned_strings_start;
char *interned_strings_top;
char *interned_strings_end;
char *interned_strings_saved_top;
HashTable interned_strings;
} zend_accel_shared_globals;
extern zend_bool accel_startup_ok;
#if ENABLE_FILE_CACHE_FALLBACK
extern zend_bool fallback_process;
#endif
extern zend_accel_shared_globals *accel_shared_globals;
#define ZCSG(element) (accel_shared_globals->element)
#ifdef ZTS
# define ZCG(v) ZEND_TSRMG(accel_globals_id, zend_accel_globals *, v)
extern int accel_globals_id;
# ifdef COMPILE_DL_OPCACHE
ZEND_TSRMLS_CACHE_EXTERN()
# endif
#else
# define ZCG(v) (accel_globals.v)
extern zend_accel_globals accel_globals;
#endif
extern char *zps_api_failure_reason;
void accel_shutdown(void);
int accel_post_deactivate(void);
void zend_accel_schedule_restart(zend_accel_restart_reason reason);
void zend_accel_schedule_restart_if_necessary(zend_accel_restart_reason reason);
accel_time_t zend_get_file_handle_timestamp(zend_file_handle *file_handle, size_t *size);
int validate_timestamp_and_record(zend_persistent_script *persistent_script, zend_file_handle *file_handle);
int validate_timestamp_and_record_ex(zend_persistent_script *persistent_script, zend_file_handle *file_handle);
int zend_accel_invalidate(const char *filename, int filename_len, zend_bool force);
int accelerator_shm_read_lock(void);
void accelerator_shm_read_unlock(void);
char *accel_make_persistent_key(const char *path, int path_length, int *key_len);
zend_op_array *persistent_compile_file(zend_file_handle *file_handle, int type);
#define IS_ACCEL_INTERNED(str) \
((char*)(str) >= ZCSG(interned_strings_start) && (char*)(str) < ZCSG(interned_strings_end))
zend_string *accel_new_interned_string(zend_string *str);
#endif /* ZEND_ACCELERATOR_H */
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