#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
typedef struct _zend_signal_entry_t {
int flags;
void* handler;
} 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;
typedef struct _zend_signal_globals_t {
int depth;
int blocked;
int running;
int active;
int initialized;
zend_bool check;
zend_signal_entry_t handlers[NSIG];
zend_signal_queue_t pstorage[ZEND_SIGNAL_QUEUE_SIZE], *phead, *ptail, *pavail;
} 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
# 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
# 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