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Annotation of embedaddon/php/Zend/zend_signal.h, revision 1.1

1.1     ! misho       1: /*
        !             2:   +----------------------------------------------------------------------+
        !             3:   | Zend Signal Handling                                                 |
        !             4:   +----------------------------------------------------------------------+
        !             5:   | Copyright (c) 2008 The PHP Group                                     |
        !             6:   +----------------------------------------------------------------------+
        !             7:   | This source file is subject to version 3.01 of the PHP license,      |
        !             8:   | that is bundled with this package in the file LICENSE, and is        |
        !             9:   | available through the world-wide-web at the following url:           |
        !            10:   | http://www.php.net/license/3_01.txt                                  |
        !            11:   | If you did not receive a copy of the PHP license and are unable to   |
        !            12:   | obtain it through the world-wide-web, please send a note to          |
        !            13:   | license@php.net so we can mail you a copy immediately.               |
        !            14:   +----------------------------------------------------------------------+
        !            15:   | Authors: Lucas Nealan <lucas@php.net>                                |
        !            16:   |          Arnaud Le Blanc <lbarnaud@php.net>                          |
        !            17:   +----------------------------------------------------------------------+
        !            18: 
        !            19:  */
        !            20: 
        !            21: /* $Id$ */
        !            22: 
        !            23: #ifndef ZEND_SIGNAL_H
        !            24: #define ZEND_SIGNAL_H
        !            25: 
        !            26: #ifdef HAVE_SIGNAL_H
        !            27: #include <signal.h>
        !            28: #endif
        !            29: 
        !            30: #ifndef NSIG
        !            31: #define NSIG 65
        !            32: #endif
        !            33: 
        !            34: #ifndef ZEND_SIGNAL_QUEUE_SIZE
        !            35: #define ZEND_SIGNAL_QUEUE_SIZE 32
        !            36: #endif
        !            37: 
        !            38: /* Signal structs */
        !            39: typedef struct _zend_signal_entry_t {
        !            40:        int   flags;          /* sigaction style flags */
        !            41:        void* handler;      /* signal handler or context */
        !            42: } zend_signal_entry_t;
        !            43: 
        !            44: typedef struct _zend_signal_t {
        !            45:        int signo;
        !            46:        siginfo_t *siginfo;
        !            47:        void* context;
        !            48: } zend_signal_t;
        !            49: 
        !            50: typedef struct _zend_signal_queue_t {
        !            51:        zend_signal_t zend_signal;
        !            52:        struct _zend_signal_queue_t *next;
        !            53: } zend_signal_queue_t;
        !            54: 
        !            55: /* Signal Globals */
        !            56: typedef struct _zend_signal_globals_t {
        !            57:        int depth;
        !            58:        int blocked;            /* 0==TRUE, -1==FALSE */
        !            59:        int running;            /* in signal handler execution */
        !            60:        int active;             /* internal signal handling is enabled */
        !            61:        int initialized;        /* memory initialized */
        !            62:        zend_bool check;        /* check for replaced handlers on shutdown */
        !            63:        zend_signal_entry_t handlers[NSIG];
        !            64:        zend_signal_queue_t pstorage[ZEND_SIGNAL_QUEUE_SIZE], *phead, *ptail, *pavail; /* pending queue */
        !            65: } zend_signal_globals_t;
        !            66: 
        !            67: #ifdef ZTS
        !            68: # define SIGG(v) TSRMG(zend_signal_globals_id, zend_signal_globals_t *, v)
        !            69: BEGIN_EXTERN_C()
        !            70: ZEND_API extern int zend_signal_globals_id;
        !            71: END_EXTERN_C()
        !            72: # define ZEND_SIGNAL_BLOCK_INTERRUPUTIONS() if (EXPECTED(zend_signal_globals_id)) { SIGG(depth)++; }
        !            73: # define ZEND_SIGNAL_UNBLOCK_INTERRUPTIONS() if (EXPECTED(zend_signal_globals_id) && UNEXPECTED((--SIGG(depth))==SIGG(blocked))) { zend_signal_handler_unblock(TSRMLS_C); }
        !            74: #else /* ZTS */
        !            75: # define SIGG(v) (zend_signal_globals.v)
        !            76: extern ZEND_API zend_signal_globals_t zend_signal_globals;
        !            77: # define ZEND_SIGNAL_BLOCK_INTERRUPUTIONS()  SIGG(depth)++;
        !            78: # define ZEND_SIGNAL_UNBLOCK_INTERRUPTIONS() if (UNEXPECTED((--SIGG(depth))==SIGG(blocked))) { zend_signal_handler_unblock(TSRMLS_C); }
        !            79: #endif /* not ZTS */
        !            80: 
        !            81: # define SIGNAL_BEGIN_CRITICAL()       sigset_t oldmask; \
        !            82:        zend_sigprocmask(SIG_BLOCK, &global_sigmask, &oldmask);
        !            83: # define SIGNAL_END_CRITICAL()         zend_sigprocmask(SIG_SETMASK, &oldmask, NULL);
        !            84: 
        !            85: void zend_signal_handler_defer(int signo, siginfo_t *siginfo, void *context);
        !            86: ZEND_API void zend_signal_handler_unblock();
        !            87: void zend_signal_activate(TSRMLS_D);
        !            88: void zend_signal_deactivate(TSRMLS_D);
        !            89: void zend_signal_startup();
        !            90: void zend_signal_shutdown(TSRMLS_D);
        !            91: ZEND_API int zend_signal(int signo, void (*handler)(int) TSRMLS_DC);
        !            92: ZEND_API int zend_sigaction(int signo, const struct sigaction *act, struct sigaction *oldact TSRMLS_DC);
        !            93: 
        !            94: #ifdef ZTS
        !            95: #define zend_sigprocmask(signo, set, oldset) tsrm_sigmask((signo), (set), (oldset))
        !            96: #else
        !            97: #define zend_sigprocmask(signo, set, oldset) sigprocmask((signo), (set), (oldset))
        !            98: #endif
        !            99: 
        !           100: #endif /* ZEND_SIGNAL_H */
        !           101: 
        !           102: /*
        !           103:  * Local variables:
        !           104:  * tab-width: 4
        !           105:  * c-basic-offset: 4
        !           106:  * indent-tabs-mode: t
        !           107:  * End:
        !           108:  */