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TSRM
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TSRM.h
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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__) || defined(__MUSL__) || defined(__HAIKU__) # 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_MAIN_CACHE_EXTERN() extern TSRM_TLS void *TSRMLS_CACHE TSRM_TLS_MODEL_ATTR; #define TSRMLS_MAIN_CACHE_DEFINE() TSRM_TLS void *TSRMLS_CACHE TSRM_TLS_MODEL_ATTR = NULL; #define TSRMLS_CACHE_EXTERN() extern TSRM_TLS void *TSRMLS_CACHE; #define TSRMLS_CACHE_DEFINE() TSRM_TLS void *TSRMLS_CACHE = 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_MAIN_CACHE_EXTERN() #define TSRMLS_MAIN_CACHE_DEFINE() #define TSRMLS_CACHE_EXTERN() #define TSRMLS_CACHE_DEFINE() #define TSRMLS_CACHE_UPDATE() #define TSRMLS_CACHE #define TSRM_TLS #endif /* ZTS */ #endif /* TSRM_H */