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109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| Zend Signal Handling |
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+----------------------------------------------------------------------+
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| Copyright (c) 2008 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Lucas Nealan <lucas@php.net> |
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| Arnaud Le Blanc <lbarnaud@php.net> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#ifndef ZEND_SIGNAL_H
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#define ZEND_SIGNAL_H
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifndef NSIG
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#define NSIG 65
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#endif
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#ifndef ZEND_SIGNAL_QUEUE_SIZE
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#define ZEND_SIGNAL_QUEUE_SIZE 64
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#endif
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/* Signal structs */
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typedef struct _zend_signal_entry_t {
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int flags; /* sigaction style flags */
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void* handler; /* signal handler or context */
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} zend_signal_entry_t;
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typedef struct _zend_signal_t {
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int signo;
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siginfo_t *siginfo;
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void* context;
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} zend_signal_t;
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typedef struct _zend_signal_queue_t {
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zend_signal_t zend_signal;
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struct _zend_signal_queue_t *next;
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} zend_signal_queue_t;
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/* Signal Globals */
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typedef struct _zend_signal_globals_t {
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int depth;
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int blocked; /* 1==TRUE, 0==FALSE */
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int running; /* in signal handler execution */
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int active; /* internal signal handling is enabled */
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zend_bool check; /* check for replaced handlers on shutdown */
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zend_signal_entry_t handlers[NSIG];
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zend_signal_queue_t pstorage[ZEND_SIGNAL_QUEUE_SIZE], *phead, *ptail, *pavail; /* pending queue */
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} zend_signal_globals_t;
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#ifdef ZTS
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# define SIGG(v) ZEND_TSRMG(zend_signal_globals_id, zend_signal_globals_t *, v)
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BEGIN_EXTERN_C()
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ZEND_API extern int zend_signal_globals_id;
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END_EXTERN_C()
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# define ZEND_SIGNAL_BLOCK_INTERRUPUTIONS() if (EXPECTED(zend_signal_globals_id)) { SIGG(depth)++; }
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# define ZEND_SIGNAL_UNBLOCK_INTERRUPTIONS() if (EXPECTED(zend_signal_globals_id) && UNEXPECTED(((SIGG(depth)--) == SIGG(blocked)))) { zend_signal_handler_unblock(); }
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#else /* ZTS */
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# define SIGG(v) (zend_signal_globals.v)
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extern ZEND_API zend_signal_globals_t zend_signal_globals;
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# define ZEND_SIGNAL_BLOCK_INTERRUPUTIONS() SIGG(depth)++;
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# define ZEND_SIGNAL_UNBLOCK_INTERRUPTIONS() if (((SIGG(depth)--) == SIGG(blocked))) { zend_signal_handler_unblock(); }
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#endif /* not ZTS */
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# define SIGNAL_BEGIN_CRITICAL() sigset_t oldmask; \
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zend_sigprocmask(SIG_BLOCK, &global_sigmask, &oldmask);
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# define SIGNAL_END_CRITICAL() zend_sigprocmask(SIG_SETMASK, &oldmask, NULL);
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void zend_signal_handler_defer(int signo, siginfo_t *siginfo, void *context);
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ZEND_API void zend_signal_handler_unblock();
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void zend_signal_activate(void);
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void zend_signal_deactivate(void);
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void zend_signal_startup();
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void zend_signal_init();
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void zend_signal_shutdown(void);
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ZEND_API int zend_signal(int signo, void (*handler)(int));
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ZEND_API int zend_sigaction(int signo, const struct sigaction *act, struct sigaction *oldact);
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#ifdef ZTS
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#define zend_sigprocmask(signo, set, oldset) tsrm_sigmask((signo), (set), (oldset))
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#else
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#define zend_sigprocmask(signo, set, oldset) sigprocmask((signo), (set), (oldset))
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#endif
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#endif /* ZEND_SIGNAL_H */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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*/
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