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Diffstat (limited to 'Zend/zend_signal.h')
| -rw-r--r-- | Zend/zend_signal.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/Zend/zend_signal.h b/Zend/zend_signal.h new file mode 100644 index 0000000..02d6495 --- /dev/null +++ b/Zend/zend_signal.h @@ -0,0 +1,108 @@ +/* + +----------------------------------------------------------------------+ + | Zend Signal Handling | + +----------------------------------------------------------------------+ + | Copyright (c) 2008 The PHP Group | + +----------------------------------------------------------------------+ + | This source file is subject to version 3.01 of the PHP license, | + | that is bundled with this package in the file LICENSE, and is | + | available through the world-wide-web at the following url: | + | http://www.php.net/license/3_01.txt | + | If you did not receive a copy of the PHP license and are unable to | + | obtain it through the world-wide-web, please send a note to | + | license@php.net so we can mail you a copy immediately. | + +----------------------------------------------------------------------+ + | Authors: Lucas Nealan <lucas@php.net> | + | Arnaud Le Blanc <lbarnaud@php.net> | + +----------------------------------------------------------------------+ + + */ + +/* $Id$ */ + +#ifndef ZEND_SIGNAL_H +#define ZEND_SIGNAL_H + +#ifdef HAVE_SIGNAL_H +#include <signal.h> +#endif + +#ifndef NSIG +#define NSIG 65 +#endif + +#ifndef ZEND_SIGNAL_QUEUE_SIZE +#define ZEND_SIGNAL_QUEUE_SIZE 32 +#endif + +/* Signal structs */ +typedef struct _zend_signal_entry_t { + int flags; /* sigaction style flags */ + void* handler; /* signal handler or context */ +} zend_signal_entry_t; + +typedef struct _zend_signal_t { + int signo; + siginfo_t *siginfo; + void* context; +} zend_signal_t; + +typedef struct _zend_signal_queue_t { + zend_signal_t zend_signal; + struct _zend_signal_queue_t *next; +} zend_signal_queue_t; + +/* Signal Globals */ +typedef struct _zend_signal_globals_t { + int depth; + int blocked; /* 0==TRUE, -1==FALSE */ + int running; /* in signal handler execution */ + int active; /* internal signal handling is enabled */ + int initialized; /* memory initialized */ + zend_bool check; /* check for replaced handlers on shutdown */ + zend_signal_entry_t handlers[NSIG]; + zend_signal_queue_t pstorage[ZEND_SIGNAL_QUEUE_SIZE], *phead, *ptail, *pavail; /* pending queue */ +} zend_signal_globals_t; + +#ifdef ZTS +# define SIGG(v) TSRMG(zend_signal_globals_id, zend_signal_globals_t *, v) +BEGIN_EXTERN_C() +ZEND_API extern int zend_signal_globals_id; +END_EXTERN_C() +# define ZEND_SIGNAL_BLOCK_INTERRUPUTIONS() if (EXPECTED(zend_signal_globals_id)) { SIGG(depth)++; } +# define ZEND_SIGNAL_UNBLOCK_INTERRUPTIONS() if (EXPECTED(zend_signal_globals_id) && UNEXPECTED((--SIGG(depth))==SIGG(blocked))) { zend_signal_handler_unblock(TSRMLS_C); } +#else /* ZTS */ +# define SIGG(v) (zend_signal_globals.v) +extern ZEND_API zend_signal_globals_t zend_signal_globals; +# define ZEND_SIGNAL_BLOCK_INTERRUPUTIONS() SIGG(depth)++; +# define ZEND_SIGNAL_UNBLOCK_INTERRUPTIONS() if (UNEXPECTED((--SIGG(depth))==SIGG(blocked))) { zend_signal_handler_unblock(TSRMLS_C); } +#endif /* not ZTS */ + +# define SIGNAL_BEGIN_CRITICAL() sigset_t oldmask; \ + zend_sigprocmask(SIG_BLOCK, &global_sigmask, &oldmask); +# define SIGNAL_END_CRITICAL() zend_sigprocmask(SIG_SETMASK, &oldmask, NULL); + +void zend_signal_handler_defer(int signo, siginfo_t *siginfo, void *context); +ZEND_API void zend_signal_handler_unblock(); +void zend_signal_activate(TSRMLS_D); +void zend_signal_deactivate(TSRMLS_D); +void zend_signal_startup(); +void zend_signal_shutdown(TSRMLS_D); +ZEND_API int zend_signal(int signo, void (*handler)(int) TSRMLS_DC); +ZEND_API int zend_sigaction(int signo, const struct sigaction *act, struct sigaction *oldact TSRMLS_DC); + +#ifdef ZTS +#define zend_sigprocmask(signo, set, oldset) tsrm_sigmask((signo), (set), (oldset)) +#else +#define zend_sigprocmask(signo, set, oldset) sigprocmask((signo), (set), (oldset)) +#endif + +#endif /* ZEND_SIGNAL_H */ + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * indent-tabs-mode: t + * End: + */ |