mirror of
https://github.com/php/php-src.git
synced 2024-09-21 18:07:23 +00:00
d428bf2d4e
gdb seems to be not always able to fetch the correct context for thread locals. Thus, the "if (TSRMLS_CACHE)" clause causes gdb to show crashes which aren't recognized neither with helgrind nor in release builds. This is reproducable by setting breakpoints on the exact line where PHP has a tsrm_get_ls_cache() call.
212 lines
5.9 KiB
C
212 lines
5.9 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@zend.com> |
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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 "tsrm_config.w32.h"
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#else
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# include <tsrm_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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# include <windows.h>
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# include <shellapi.h>
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#elif defined(GNUPTH)
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# include <pth.h>
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#elif defined(PTHREADS)
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# include <pthread.h>
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#elif defined(TSRM_ST)
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# include <st.h>
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#elif defined(BETHREADS)
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#include <kernel/OS.h>
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#include <TLS.h>
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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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#elif defined(GNUPTH)
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# define THREAD_T pth_t
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# define MUTEX_T pth_mutex_t *
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#elif defined(PTHREADS)
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# define THREAD_T pthread_t
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# define MUTEX_T pthread_mutex_t *
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#elif defined(NSAPI)
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# define THREAD_T SYS_THREAD
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# define MUTEX_T CRITICAL
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#elif defined(PI3WEB)
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# define THREAD_T PIThread *
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# define MUTEX_T PISync *
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#elif defined(TSRM_ST)
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# define THREAD_T st_thread_t
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# define MUTEX_T st_mutex_t
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#elif defined(BETHREADS)
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# define THREAD_T thread_id
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typedef struct {
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sem_id sem;
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int32 ben;
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} beos_ben;
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# define MUTEX_T beos_ben *
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#endif
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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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, char *debug_filename);
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TSRM_API void tsrm_shutdown(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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/* 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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/* frees all resources allocated for all threads except current */
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void ts_free_worker_threads(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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TSRM_API int tsrm_error(int level, const char *format, ...);
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TSRM_API void tsrm_error_set(int level, 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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/* these 3 APIs should only be used by people that fully understand the threading model
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* used by PHP/Zend and the selected SAPI. */
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TSRM_API void *tsrm_new_interpreter_context(void);
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TSRM_API void *tsrm_set_interpreter_context(void *new_ctx);
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TSRM_API void tsrm_free_interpreter_context(void *context);
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TSRM_API void *tsrm_get_ls_cache(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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#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 TSRMLS_FETCH_FROM_CTX(ctx) void ***tsrm_ls = (void ***) ctx
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#define TSRMLS_SET_CTX(ctx) ctx = (void ***) tsrm_get_ls_cache()
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#define TSRMG(id, type, element) (((type) (*((void ***) tsrm_get_ls_cache()))[TSRM_UNSHUFFLE_RSRC_ID(id)])->element)
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#define TSRMG_STATIC(id, type, element) (((type) (*((void ***) TSRMLS_CACHE))[TSRM_UNSHUFFLE_RSRC_ID(id)])->element)
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#define TSRMLS_CACHE_EXTERN() extern TSRM_TLS void *TSRMLS_CACHE
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#define TSRMLS_CACHE_DEFINE() TSRM_TLS void *TSRMLS_CACHE = NULL
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#if ZEND_DEBUG
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#define TSRMLS_CACHE_UPDATE() TSRMLS_CACHE = tsrm_get_ls_cache()
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#else
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#define TSRMLS_CACHE_UPDATE() if (!TSRMLS_CACHE) TSRMLS_CACHE = tsrm_get_ls_cache()
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#endif
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#define TSRMLS_CACHE _tsrm_ls_cache
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/* BC only */
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#define TSRMLS_D void
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#define TSRMLS_DC
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#define TSRMLS_C
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#define TSRMLS_CC
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#define TSRMLS_FETCH()
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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 TSRMLS_FETCH()
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#define TSRMLS_FETCH_FROM_CTX(ctx)
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#define TSRMLS_SET_CTX(ctx)
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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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/* BC only */
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#define TSRMLS_D void
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#define TSRMLS_DC
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#define TSRMLS_C
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#define TSRMLS_CC
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#endif /* ZTS */
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#endif /* TSRM_H */
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