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|
/*
+----------------------------------------------------------------------+
| Thread Safe Resource Manager |
+----------------------------------------------------------------------+
| Copyright (c) 1999-2011, Andi Gutmans, Sascha Schumann, Zeev Suraski |
| This source file is subject to the TSRM license, that is bundled |
| with this package in the file LICENSE |
+----------------------------------------------------------------------+
| Authors: Zeev Suraski <zeev@php.net> |
+----------------------------------------------------------------------+
*/
#ifndef TSRM_H
#define TSRM_H
#if !defined(__CYGWIN__) && defined(WIN32)
# define TSRM_WIN32
# include "Zend/zend_config.w32.h"
#else
# include "main/php_config.h"
#endif
#include "main/php_stdint.h"
#ifdef TSRM_WIN32
# ifdef TSRM_EXPORTS
# define TSRM_API __declspec(dllexport)
# else
# define TSRM_API __declspec(dllimport)
# endif
#elif defined(__GNUC__) && __GNUC__ >= 4
# define TSRM_API __attribute__ ((visibility("default")))
#else
# define TSRM_API
#endif
typedef intptr_t tsrm_intptr_t;
typedef uintptr_t tsrm_uintptr_t;
/* Only compile multi-threading functions if we're in ZTS mode */
#ifdef ZTS
#ifdef TSRM_WIN32
# ifndef TSRM_INCLUDE_FULL_WINDOWS_HEADERS
# define WIN32_LEAN_AND_MEAN
# endif
#else
# include <pthread.h>
#endif
#if SIZEOF_SIZE_T == 4
# define TSRM_ALIGNED_SIZE(size) \
(((size) + INT32_C(15)) & ~INT32_C(15))
#else
# define TSRM_ALIGNED_SIZE(size) \
(((size) + INT64_C(15)) & ~INT64_C(15))
#endif
typedef int ts_rsrc_id;
/* Define THREAD_T and MUTEX_T */
#ifdef TSRM_WIN32
# define THREAD_T DWORD
# define MUTEX_T CRITICAL_SECTION *
#else
# define THREAD_T pthread_t
# define MUTEX_T pthread_mutex_t *
#endif
#include <signal.h>
typedef void (*ts_allocate_ctor)(void *);
typedef void (*ts_allocate_dtor)(void *);
#define THREAD_HASH_OF(thr,ts) (unsigned long)thr%(unsigned long)ts
#ifdef __cplusplus
extern "C" {
#endif
/* startup/shutdown */
TSRM_API int tsrm_startup(int expected_threads, int expected_resources, int debug_level, const char *debug_filename);
TSRM_API void tsrm_shutdown(void);
/* environ lock API */
TSRM_API void tsrm_env_lock(void);
TSRM_API void tsrm_env_unlock(void);
/* allocates a new thread-safe-resource id */
TSRM_API ts_rsrc_id ts_allocate_id(ts_rsrc_id *rsrc_id, size_t size, ts_allocate_ctor ctor, ts_allocate_dtor dtor);
/* Fast resource in reserved (pre-allocated) space */
TSRM_API void tsrm_reserve(size_t size);
TSRM_API ts_rsrc_id ts_allocate_fast_id(ts_rsrc_id *rsrc_id, size_t *offset, size_t size, ts_allocate_ctor ctor, ts_allocate_dtor dtor);
/* fetches the requested resource for the current thread */
TSRM_API void *ts_resource_ex(ts_rsrc_id id, THREAD_T *th_id);
#define ts_resource(id) ts_resource_ex(id, NULL)
/* frees all resources allocated for the current thread */
TSRM_API void ts_free_thread(void);
/* deallocates all occurrences of a given id */
TSRM_API void ts_free_id(ts_rsrc_id id);
/* Debug support */
#define TSRM_ERROR_LEVEL_ERROR 1
#define TSRM_ERROR_LEVEL_CORE 2
#define TSRM_ERROR_LEVEL_INFO 3
typedef void (*tsrm_thread_begin_func_t)(THREAD_T thread_id);
typedef void (*tsrm_thread_end_func_t)(THREAD_T thread_id);
typedef void (*tsrm_shutdown_func_t)(void);
TSRM_API int tsrm_error(int level, const char *format, ...);
TSRM_API void tsrm_error_set(int level, const char *debug_filename);
/* utility functions */
TSRM_API THREAD_T tsrm_thread_id(void);
TSRM_API MUTEX_T tsrm_mutex_alloc(void);
TSRM_API void tsrm_mutex_free(MUTEX_T mutexp);
TSRM_API int tsrm_mutex_lock(MUTEX_T mutexp);
TSRM_API int tsrm_mutex_unlock(MUTEX_T mutexp);
#ifdef HAVE_SIGPROCMASK
TSRM_API int tsrm_sigmask(int how, const sigset_t *set, sigset_t *oldset);
#endif
TSRM_API void *tsrm_set_new_thread_begin_handler(tsrm_thread_begin_func_t new_thread_begin_handler);
TSRM_API void *tsrm_set_new_thread_end_handler(tsrm_thread_end_func_t new_thread_end_handler);
TSRM_API void *tsrm_set_shutdown_handler(tsrm_shutdown_func_t shutdown_handler);
TSRM_API void *tsrm_get_ls_cache(void);
TSRM_API size_t tsrm_get_ls_cache_tcb_offset(void);
TSRM_API uint8_t tsrm_is_main_thread(void);
TSRM_API uint8_t tsrm_is_shutdown(void);
TSRM_API const char *tsrm_api_name(void);
#ifdef TSRM_WIN32
# define TSRM_TLS __declspec(thread)
#else
# define TSRM_TLS __thread
#endif
#ifndef __has_attribute
# define __has_attribute(x) 0
#endif
#if !__has_attribute(tls_model) || defined(__FreeBSD__)
# define TSRM_TLS_MODEL_ATTR
#elif __PIC__
# define TSRM_TLS_MODEL_ATTR __attribute__((tls_model("initial-exec")))
#else
# define TSRM_TLS_MODEL_ATTR __attribute__((tls_model("local-exec")))
#endif
#define TSRM_SHUFFLE_RSRC_ID(rsrc_id) ((rsrc_id)+1)
#define TSRM_UNSHUFFLE_RSRC_ID(rsrc_id) ((rsrc_id)-1)
#define TSRMG(id, type, element) (TSRMG_BULK(id, type)->element)
#define TSRMG_BULK(id, type) ((type) (*((void ***) tsrm_get_ls_cache()))[TSRM_UNSHUFFLE_RSRC_ID(id)])
#define TSRMG_FAST(offset, type, element) (TSRMG_FAST_BULK(offset, type)->element)
#define TSRMG_FAST_BULK(offset, type) ((type) (((char*) tsrm_get_ls_cache())+(offset)))
#define TSRMG_STATIC(id, type, element) (TSRMG_BULK_STATIC(id, type)->element)
#define TSRMG_BULK_STATIC(id, type) ((type) (*((void ***) TSRMLS_CACHE))[TSRM_UNSHUFFLE_RSRC_ID(id)])
#define TSRMG_FAST_STATIC(offset, type, element) (TSRMG_FAST_BULK_STATIC(offset, type)->element)
#define TSRMG_FAST_BULK_STATIC(offset, type) ((type) (((char*) TSRMLS_CACHE)+(offset)))
#define TSRMLS_CACHE_EXTERN() extern TSRM_TLS void *TSRMLS_CACHE TSRM_TLS_MODEL_ATTR;
#define TSRMLS_CACHE_DEFINE() TSRM_TLS void *TSRMLS_CACHE TSRM_TLS_MODEL_ATTR = NULL;
#define TSRMLS_CACHE_UPDATE() TSRMLS_CACHE = tsrm_get_ls_cache()
#define TSRMLS_CACHE _tsrm_ls_cache
#ifdef __cplusplus
}
#endif
#else /* non ZTS */
#define tsrm_env_lock()
#define tsrm_env_unlock()
#define TSRMG_STATIC(id, type, element)
#define TSRMLS_CACHE_EXTERN()
#define TSRMLS_CACHE_DEFINE()
#define TSRMLS_CACHE_UPDATE()
#define TSRMLS_CACHE
#define TSRM_TLS
#endif /* ZTS */
#endif /* TSRM_H */
|
