42
#include "drizzled/visibility.h"
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#define pthread_key(T,V) pthread_key_t V
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#define pthread_handler_t void *
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#define pthread_detach_this_thread()
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#define pthread_handler_t EXTERNC void *
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typedef void *(* pthread_handler)(void *);
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/* Test first for RTS or FSU threads */
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#if defined(PTHREAD_SCOPE_GLOBAL) && !defined(PTHREAD_SCOPE_SYSTEM)
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#define HAVE_rts_threads
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extern int my_pthread_create_detached;
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#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C))
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#define PTHREAD_CREATE_DETACHED &my_pthread_create_detached
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#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_GLOBAL
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#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_LOCAL
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#define USE_ALARM_THREAD
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#endif /* defined(PTHREAD_SCOPE_GLOBAL) && !defined(PTHREAD_SCOPE_SYSTEM) */
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#ifndef HAVE_NONPOSIX_SIGWAIT
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#define my_sigwait(A,B) sigwait((A),(B))
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int my_sigwait(const sigset_t *set,int *sig);
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#ifdef HAVE_NONPOSIX_PTHREAD_MUTEX_INIT
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#define pthread_mutex_init(a,b) my_pthread_mutex_init((a),(b))
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extern int my_pthread_mutex_init(pthread_mutex_t *mp,
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const pthread_mutexattr_t *attr);
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#define pthread_cond_init(a,b) my_pthread_cond_init((a),(b))
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extern int my_pthread_cond_init(pthread_cond_t *mp,
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const pthread_condattr_t *attr);
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#endif /* HAVE_NONPOSIX_PTHREAD_MUTEX_INIT */
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#if defined(HAVE_SIGTHREADMASK) && !defined(HAVE_PTHREAD_SIGMASK)
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#define pthread_sigmask(A,B,C) sigthreadmask((A),(B),(C))
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#if !defined(HAVE_SIGWAIT) && !defined(HAVE_rts_threads) && !defined(sigwait) && !defined(alpha_linux_port) && !defined(HAVE_NONPOSIX_SIGWAIT)
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int sigwait(sigset_t *setp, int *sigp); /* Use our implemention */
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We define my_sigset() and use that instead of the system sigset() so that
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we can favor an implementation based on sigaction(). On some systems, such
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as Mac OS X, sigset() results in flags such as SA_RESTART being set, and
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we want to make sure that no such flags are set.
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#if defined(HAVE_SIGACTION) && !defined(my_sigset)
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#define my_sigset(A,B) do { struct sigaction l_s; sigset_t l_set; int l_rc; \
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sigemptyset(&l_set); \
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l_s.sa_handler = (B); \
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l_s.sa_mask = l_set; \
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l_rc= sigaction((A), &l_s, (struct sigaction *) NULL);\
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#elif defined(HAVE_SIGSET) && !defined(my_sigset)
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#define my_sigset(A,B) sigset((A),(B))
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#elif !defined(my_sigset)
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#define my_sigset(A,B) signal((A),(B))
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#ifndef my_pthread_attr_setprio
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#ifdef HAVE_PTHREAD_ATTR_SETPRIO
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#define my_pthread_attr_setprio(A,B) pthread_attr_setprio((A),(B))
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extern void my_pthread_attr_setprio(pthread_attr_t *attr, int priority);
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#if !defined(HAVE_PTHREAD_ATTR_SETSCOPE)
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#define pthread_attr_setscope(A,B)
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#if defined(HAVE_BROKEN_PTHREAD_COND_TIMEDWAIT)
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extern int my_pthread_cond_timedwait(pthread_cond_t *cond,
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pthread_mutex_t *mutex,
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struct timespec *abstime);
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#define pthread_cond_timedwait(A,B,C) my_pthread_cond_timedwait((A),(B),(C))
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#if !defined(HAVE_PTHREAD_KEY_DELETE) && !defined(pthread_key_delete)
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#define pthread_key_delete(A) pthread_dummy(0)
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#ifdef HAVE_CTHREADS_WRAPPER /* For MacOSX */
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#define pthread_cond_destroy(A) pthread_dummy(0)
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#define pthread_mutex_destroy(A) pthread_dummy(0)
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#define pthread_attr_delete(A) pthread_dummy(0)
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#define pthread_condattr_delete(A) pthread_dummy(0)
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#define pthread_attr_setstacksize(A,B) pthread_dummy(0)
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#define pthread_equal(A,B) ((A) == (B))
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#define pthread_cond_timedwait(a,b,c) pthread_cond_wait((a),(b))
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#define pthread_attr_init(A) pthread_attr_create(A)
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#define pthread_attr_destroy(A) pthread_attr_delete(A)
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#define pthread_attr_setdetachstate(A,B) pthread_dummy(0)
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#define pthread_create(A,B,C,D) pthread_create((A),*(B),(C),(D))
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#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C))
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#define pthread_kill(A,B) pthread_dummy((A) ? 0 : ESRCH)
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#undef pthread_detach_this_thread
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#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(&tmp); }
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#ifdef HAVE_DARWIN5_THREADS
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#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C))
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#define pthread_kill(A,B) pthread_dummy((A) ? 0 : ESRCH)
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#define pthread_condattr_init(A) pthread_dummy(0)
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#define pthread_condattr_destroy(A) pthread_dummy(0)
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#undef pthread_detach_this_thread
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#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(tmp); }
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#if (defined(HAVE_PTHREAD_ATTR_CREATE) && !defined(HAVE_SIGWAIT))
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/* This is set on AIX_3_2 and Siemens unix (and DEC OSF/1 3.2 too) */
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#define pthread_key_create(A,B) \
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pthread_keycreate(A,(B) ?\
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(pthread_destructor_t) (B) :\
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(pthread_destructor_t) pthread_dummy)
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#define pthread_attr_init(A) pthread_attr_create(A)
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#define pthread_attr_destroy(A) pthread_attr_delete(A)
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#define pthread_attr_setdetachstate(A,B) pthread_dummy(0)
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#define pthread_create(A,B,C,D) pthread_create((A),*(B),(C),(D))
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#ifndef pthread_sigmask
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#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C))
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#define pthread_kill(A,B) pthread_dummy((A) ? 0 : ESRCH)
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#undef pthread_detach_this_thread
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#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(&tmp); }
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#define HAVE_PTHREAD_KILL
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#if defined(HAVE_POSIX1003_4a_MUTEX) && !defined(DONT_REMAP_PTHREAD_FUNCTIONS)
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#undef pthread_mutex_trylock
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#define pthread_mutex_trylock(a) my_pthread_mutex_trylock((a))
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int my_pthread_mutex_trylock(pthread_mutex_t *mutex);
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#if !defined(HAVE_PTHREAD_YIELD_ONE_ARG) && !defined(HAVE_PTHREAD_YIELD_ZERO_ARG)
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/* no pthread_yield() available */
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#ifdef HAVE_SCHED_YIELD
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#ifndef set_timespec_nsec
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#define set_timespec_nsec(ABSTIME,NSEC) \
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boost::posix_time::ptime mytime(boost::posix_time::microsec_clock::local_time());\
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boost::posix_time::ptime epoch(boost::gregorian::date(1970,1,1));\
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uint64_t t_mark= (mytime-epoch).total_microseconds();\
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uint64_t now= t_mark + (NSEC/100); \
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uint64_t now= my_getsystime() + (NSEC/100); \
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(ABSTIME).tv_sec= (time_t) (now / 10000000UL); \
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(ABSTIME).tv_nsec= (long) (now % 10000000UL * 100 + ((NSEC) % 100)); \
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#endif /* !set_timespec_nsec */
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#endif /* HAVE_TIMESPEC_TS_SEC */
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/* safe_mutex adds checking to mutex for easier debugging */
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typedef struct st_safe_mutex_t
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pthread_mutex_t global,mutex;
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int safe_mutex_init(safe_mutex_t *mp, const pthread_mutexattr_t *attr,
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const char *file, uint32_t line);
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int safe_mutex_lock(safe_mutex_t *mp, bool try_lock, const char *file, uint32_t line);
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int safe_mutex_unlock(safe_mutex_t *mp,const char *file, uint32_t line);
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int safe_mutex_destroy(safe_mutex_t *mp,const char *file, uint32_t line);
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int safe_cond_wait(pthread_cond_t *cond, safe_mutex_t *mp,const char *file,
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int safe_cond_timedwait(pthread_cond_t *cond, safe_mutex_t *mp,
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struct timespec *abstime, const char *file, uint32_t line);
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void safe_mutex_global_init(void);
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void safe_mutex_end(void);
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/* Wrappers if safe mutex is actually used */
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#define safe_mutex_assert_owner(mp)
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#define safe_mutex_assert_not_owner(mp)
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#if defined(MY_PTHREAD_FASTMUTEX)
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typedef struct st_my_pthread_fastmutex_t
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pthread_mutex_t mutex;
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} my_pthread_fastmutex_t;
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void fastmutex_global_init(void);
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int my_pthread_fastmutex_init(my_pthread_fastmutex_t *mp,
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const pthread_mutexattr_t *attr);
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int my_pthread_fastmutex_lock(my_pthread_fastmutex_t *mp);
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#undef pthread_mutex_init
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#undef pthread_mutex_lock
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#undef pthread_mutex_unlock
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#undef pthread_mutex_destroy
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#undef pthread_mutex_wait
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#undef pthread_mutex_timedwait
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#undef pthread_mutex_t
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#undef pthread_cond_wait
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#undef pthread_cond_timedwait
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#undef pthread_mutex_trylock
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#define pthread_mutex_init(A,B) my_pthread_fastmutex_init((A),(B))
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#define pthread_mutex_lock(A) my_pthread_fastmutex_lock(A)
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#define pthread_mutex_unlock(A) pthread_mutex_unlock(&(A)->mutex)
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#define pthread_mutex_destroy(A) pthread_mutex_destroy(&(A)->mutex)
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#define pthread_cond_wait(A,B) pthread_cond_wait((A),&(B)->mutex)
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#define pthread_cond_timedwait(A,B,C) pthread_cond_timedwait((A),&(B)->mutex,(C))
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#define pthread_mutex_trylock(A) pthread_mutex_trylock(&(A)->mutex)
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#define pthread_mutex_t my_pthread_fastmutex_t
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#endif /* defined(MY_PTHREAD_FASTMUTEX) */
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/* READ-WRITE thread locking */
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#ifdef HAVE_BROKEN_RWLOCK /* For OpenUnix */
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#undef HAVE_PTHREAD_RWLOCK_RDLOCK
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#undef HAVE_RWLOCK_INIT
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#if defined(USE_MUTEX_INSTEAD_OF_RW_LOCKS)
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/* use these defs for simple mutex locking */
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#define rw_lock_t pthread_mutex_t
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#define my_rwlock_init(A,B) pthread_mutex_init((A),(B))
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#define rw_rdlock(A) pthread_mutex_lock((A))
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#define rw_wrlock(A) pthread_mutex_lock((A))
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#define rw_tryrdlock(A) pthread_mutex_trylock((A))
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#define rw_trywrlock(A) pthread_mutex_trylock((A))
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#define rw_unlock(A) pthread_mutex_unlock((A))
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#define rwlock_destroy(A) pthread_mutex_destroy((A))
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#elif defined(HAVE_PTHREAD_RWLOCK_RDLOCK)
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#define rw_lock_t pthread_rwlock_t
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#define my_rwlock_init(A,B) pthread_rwlock_init((A),(B))
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#define rw_rdlock(A) pthread_rwlock_rdlock(A)
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#define rw_wrlock(A) pthread_rwlock_wrlock(A)
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#define rw_tryrdlock(A) pthread_rwlock_tryrdlock((A))
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#define rw_trywrlock(A) pthread_rwlock_trywrlock((A))
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#define rw_unlock(A) pthread_rwlock_unlock(A)
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#define rwlock_destroy(A) pthread_rwlock_destroy(A)
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#elif defined(HAVE_RWLOCK_INIT)
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#ifdef HAVE_RWLOCK_T /* For example Solaris 2.6-> */
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#define rw_lock_t rwlock_t
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#define my_rwlock_init(A,B) rwlock_init((A),USYNC_THREAD,0)
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/* Use our own version of read/write locks */
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typedef struct _my_rw_lock_t {
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pthread_mutex_t lock; /* lock for structure */
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pthread_cond_t readers; /* waiting readers */
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pthread_cond_t writers; /* waiting writers */
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int state; /* -1:writer,0:free,>0:readers */
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int waiters; /* number of waiting writers */
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#define rw_lock_t my_rw_lock_t
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#define rw_rdlock(A) my_rw_rdlock((A))
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#define rw_wrlock(A) my_rw_wrlock((A))
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#define rw_tryrdlock(A) my_rw_tryrdlock((A))
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#define rw_trywrlock(A) my_rw_trywrlock((A))
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#define rw_unlock(A) my_rw_unlock((A))
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#define rwlock_destroy(A) my_rwlock_destroy((A))
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extern int my_rwlock_init(my_rw_lock_t *, void *);
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extern int my_rwlock_destroy(my_rw_lock_t *);
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extern int my_rw_rdlock(my_rw_lock_t *);
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extern int my_rw_wrlock(my_rw_lock_t *);
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extern int my_rw_unlock(my_rw_lock_t *);
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extern int my_rw_tryrdlock(my_rw_lock_t *);
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extern int my_rw_trywrlock(my_rw_lock_t *);
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#endif /* USE_MUTEX_INSTEAD_OF_RW_LOCKS */
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#ifndef HAVE_THR_SETCONCURRENCY
355
#define thr_setconcurrency(A) pthread_dummy(0)
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#if !defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE) && ! defined(pthread_attr_setstacksize)
95
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#define pthread_attr_setstacksize(A,B) pthread_dummy(0)
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/* Define mutex types, see my_thr_init.c */
99
#ifdef THREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
362
#define MY_MUTEX_INIT_SLOW NULL
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#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
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364
extern pthread_mutexattr_t my_fast_mutexattr;
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#define MY_MUTEX_INIT_FAST &my_fast_mutexattr
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#define MY_MUTEX_INIT_FAST NULL
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#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
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extern pthread_mutexattr_t my_errorcheck_mutexattr;
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#define MY_MUTEX_INIT_ERRCHK &my_errorcheck_mutexattr
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#define MY_MUTEX_INIT_ERRCHK NULL
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/* Define it to something */
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typedef uint64_t my_thread_id;
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extern bool my_thread_global_init(void);
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384
extern void my_thread_global_end(void);
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DRIZZLED_API bool my_thread_init(void);
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DRIZZLED_API void my_thread_end(void);
385
extern bool my_thread_init(void);
386
extern void my_thread_end(void);
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387
extern const char *my_thread_name(void);
388
extern my_thread_id my_thread_dbug_id(void);
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/* All thread specific variables are in the following struct */
120
A default thread stack size of zero means that we are going to use
121
the OS defined thread stack size (this varies from OS to OS).
123
#define DEFAULT_THREAD_STACK 0
125
} /* namespace internal */
126
} /* namespace drizzled */
128
#endif /* DRIZZLED_INTERNAL_MY_PTHREAD_H */
392
#define THREAD_NAME_SIZE 10
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Drizzle can survive with 32K, but some glibc libraries require > 128K stack
395
to resolve hostnames. Also recursive stored procedures needs stack.
397
#define DEFAULT_THREAD_STACK (256*INT32_C(1024))
399
struct st_my_thread_var
401
pthread_cond_t suspend;
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pthread_mutex_t mutex;
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pthread_mutex_t * volatile current_mutex;
404
pthread_cond_t * volatile current_cond;
405
pthread_t pthread_self;
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struct st_my_thread_var *next,**prev;
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extern struct st_my_thread_var *_my_thread_var(void);
415
extern uint32_t my_thread_end_wait_time;
416
#define my_thread_var (_my_thread_var())
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Keep track of shutdown,signal, and main threads so that my_end() will not
419
report errors with them
422
/* Which kind of thread library is in use */
424
#define THD_LIB_OTHER 1
425
#define THD_LIB_NPTL 2
428
extern uint32_t thd_lib_detected;
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thread_safe_xxx functions are for critical statistic or counters.
432
The implementation is guaranteed to be thread safe, on all platforms.
433
Note that the calling code should *not* assume the counter is protected
434
by the mutex given, as the implementation of these helpers may change
435
to use my_atomic operations instead.
438
#ifndef thread_safe_increment
439
#define thread_safe_increment(V,L) \
440
(pthread_mutex_lock((L)), (V)++, pthread_mutex_unlock((L)))
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#define thread_safe_decrement(V,L) \
442
(pthread_mutex_lock((L)), (V)--, pthread_mutex_unlock((L)))
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#ifndef thread_safe_add
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#define thread_safe_add(V,C,L) \
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(pthread_mutex_lock((L)), (V)+=(C), pthread_mutex_unlock((L)))
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#define thread_safe_sub(V,C,L) \
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(pthread_mutex_lock((L)), (V)-=(C), pthread_mutex_unlock((L)))
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statistics_xxx functions are for non critical statistic,
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maintained in global variables.
455
- race conditions can occur, making the result slightly inaccurate.
456
- the lock given is not honored.
458
#define statistic_decrement(V,L) (V)--
459
#define statistic_increment(V,L) (V)++
460
#define statistic_add(V,C,L) (V)+=(C)
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#define statistic_sub(V,C,L) (V)-=(C)
464
No locking needed, the counter is owned by the thread
466
#define status_var_increment(V) (V)++
467
#define status_var_decrement(V) (V)--
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#define status_var_add(V,C) (V)+=(C)
469
#define status_var_sub(V,C) (V)-=(C)
474
#endif /* _my_ptread_h */