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