diff options
Diffstat (limited to 'ext/opcache/zend_shared_alloc.h')
| -rw-r--r-- | ext/opcache/zend_shared_alloc.h | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/ext/opcache/zend_shared_alloc.h b/ext/opcache/zend_shared_alloc.h new file mode 100644 index 0000000000..57ea8d3fdd --- /dev/null +++ b/ext/opcache/zend_shared_alloc.h @@ -0,0 +1,182 @@ +/* + +----------------------------------------------------------------------+ + | Zend OPcache | + +----------------------------------------------------------------------+ + | Copyright (c) 1998-2014 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_SHARED_ALLOC_H +#define ZEND_SHARED_ALLOC_H + +#include "zend.h" +#include "ZendAccelerator.h" + +#if defined(__APPLE__) && defined(__MACH__) /* darwin */ +# ifdef HAVE_SHM_MMAP_POSIX +# define USE_SHM_OPEN 1 +# endif +# ifdef HAVE_SHM_MMAP_ANON +# define USE_MMAP 1 +# endif +#elif defined(__linux__) || defined(_AIX) +# ifdef HAVE_SHM_IPC +# define USE_SHM 1 +# endif +# ifdef HAVE_SHM_MMAP_ANON +# define USE_MMAP 1 +# endif +#elif defined(__sparc) || defined(__sun) +# ifdef HAVE_SHM_MMAP_POSIX +# define USE_SHM_OPEN 1 +# endif +# ifdef HAVE_SHM_IPC +# define USE_SHM 1 +# endif +# if defined(__i386) +# ifdef HAVE_SHM_MMAP_ANON +# define USE_MMAP 1 +# endif +# endif +#else +# ifdef HAVE_SHM_MMAP_POSIX +# define USE_SHM_OPEN 1 +# endif +# ifdef HAVE_SHM_MMAP_ANON +# define USE_MMAP 1 +# endif +# ifdef HAVE_SHM_IPC +# define USE_SHM 1 +# endif +#endif + +#define ALLOC_FAILURE 0 +#define ALLOC_SUCCESS 1 +#define FAILED_REATTACHED 2 +#define SUCCESSFULLY_REATTACHED 4 +#define ALLOC_FAIL_MAPPING 8 + +typedef struct _zend_shared_segment { + size_t size; + size_t pos; /* position for simple stack allocator */ + void *p; +} zend_shared_segment; + +typedef int (*create_segments_t)(size_t requested_size, zend_shared_segment ***shared_segments, int *shared_segment_count, char **error_in); +typedef int (*detach_segment_t)(zend_shared_segment *shared_segment); + +typedef struct { + create_segments_t create_segments; + detach_segment_t detach_segment; + size_t (*segment_type_size)(void); +} zend_shared_memory_handlers; + +typedef struct _handler_entry { + const char *name; + zend_shared_memory_handlers *handler; +} zend_shared_memory_handler_entry; + +typedef struct _zend_shared_memory_state { + int *positions; /* current positions for each segment */ + int shared_free; /* amount of free shared memory */ +} zend_shared_memory_state; + +typedef struct _zend_smm_shared_globals { + /* Shared Memory Manager */ + zend_shared_segment **shared_segments; + /* Number of allocated shared segments */ + int shared_segments_count; + /* Amount of free shared memory */ + size_t shared_free; + /* Amount of shared memory allocated by garbage */ + int wasted_shared_memory; + /* No more shared memory flag */ + zend_bool memory_exhausted; + /* Saved Shared Allocator State */ + zend_shared_memory_state shared_memory_state; + /* Pointer to the application's shared data structures */ + void *app_shared_globals; +} zend_smm_shared_globals; + +extern zend_smm_shared_globals *smm_shared_globals; + +#define ZSMMG(element) (smm_shared_globals->element) + +#define SHARED_ALLOC_REATTACHED (SUCCESS+1) + +int zend_shared_alloc_startup(size_t requested_size); +void zend_shared_alloc_shutdown(void); + +/* allocate shared memory block */ +void *zend_shared_alloc(size_t size); + +/* copy into shared memory */ +void *_zend_shared_memdup(void *p, size_t size, zend_bool free_source TSRMLS_DC); +int zend_shared_memdup_size(void *p, size_t size); + +typedef union _align_test { + void *ptr; + double dbl; + long lng; +} align_test; + +#if ZEND_GCC_VERSION >= 2000 +# define PLATFORM_ALIGNMENT (__alignof__ (align_test)) +#else +# define PLATFORM_ALIGNMENT (sizeof(align_test)) +#endif + +#define ZEND_ALIGNED_SIZE(size) \ + ((size + PLATFORM_ALIGNMENT - 1) & ~(PLATFORM_ALIGNMENT - 1)) + +/* exclusive locking */ +void zend_shared_alloc_lock(TSRMLS_D); +void zend_shared_alloc_unlock(TSRMLS_D); /* returns the allocated size during lock..unlock */ +void zend_shared_alloc_safe_unlock(TSRMLS_D); + +/* old/new mapping functions */ +void zend_shared_alloc_clear_xlat_table(void); +void zend_shared_alloc_register_xlat_entry(const void *old, const void *new); +void *zend_shared_alloc_get_xlat_entry(const void *old); + +size_t zend_shared_alloc_get_free_memory(void); +void zend_shared_alloc_save_state(void); +void zend_shared_alloc_restore_state(void); +const char *zend_accel_get_shared_model(void); + +/* memory write protection */ +void zend_accel_shared_protect(int mode TSRMLS_DC); + +#ifdef USE_MMAP +extern zend_shared_memory_handlers zend_alloc_mmap_handlers; +#endif + +#ifdef USE_SHM +extern zend_shared_memory_handlers zend_alloc_shm_handlers; +#endif + +#ifdef USE_SHM_OPEN +extern zend_shared_memory_handlers zend_alloc_posix_handlers; +#endif + +#ifdef ZEND_WIN32 +extern zend_shared_memory_handlers zend_alloc_win32_handlers; +void zend_shared_alloc_create_lock(void); +void zend_shared_alloc_lock_win32(void); +void zend_shared_alloc_unlock_win32(void); +#endif + +#endif /* ZEND_SHARED_ALLOC_H */ |