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Diffstat (limited to 'mysql/ma_pthread.h')
| -rw-r--r-- | mysql/ma_pthread.h | 583 |
1 files changed, 583 insertions, 0 deletions
diff --git a/mysql/ma_pthread.h b/mysql/ma_pthread.h new file mode 100644 index 0000000..7383367 --- /dev/null +++ b/mysql/ma_pthread.h @@ -0,0 +1,583 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + 2016 MariaDB Corporation AB + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + MA 02111-1301, USA */ + +/* Defines to make different thread packages compatible */ + +#ifndef _my_pthread_h +#define _my_pthread_h + +#undef SAFE_MUTEX + +#include <errno.h> +#ifndef ETIME +#define ETIME ETIMEDOUT /* For FreeBSD */ +#endif + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#if defined(_WIN32) + +typedef CRITICAL_SECTION pthread_mutex_t; + +typedef HANDLE pthread_t; +typedef struct thread_attr { + DWORD dwStackSize ; + DWORD dwCreatingFlag ; + int priority ; +} pthread_attr_t ; + +typedef struct { int dummy; } pthread_condattr_t; + +/* Implementation of posix conditions */ + +typedef struct st_pthread_link { + DWORD thread_id; + struct st_pthread_link *next; +} pthread_link; + +typedef struct { + uint32 waiting; + + enum { + SIGNAL = 0, + BROADCAST = 1, + MAX_EVENTS = 2 + } EVENTS; + HANDLE events[MAX_EVENTS]; + CRITICAL_SECTION waiters_count_lock; +} pthread_cond_t; + +#ifndef _TIMESPEC_DEFINED +#if (!defined(_MSC_VER) || _MSC_VER < 1900) +struct timespec { /* For pthread_cond_timedwait() */ + time_t tv_sec; + long tv_nsec; +}; +#endif +#endif + +typedef int pthread_mutexattr_t; +#define pthread_self() GetCurrentThreadId() + +#define pthread_handler_decl(A,B) void * __cdecl A(void *B) +typedef void * (__cdecl *pthread_handler)(void *); + +void win_pthread_init(void); + +int pthread_create(pthread_t *,pthread_attr_t *,pthread_handler,void *); +int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr); +int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); +int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, + struct timespec *abstime); +int pthread_cond_signal(pthread_cond_t *cond); +int pthread_cond_broadcast(pthread_cond_t *cond); +int pthread_cond_destroy(pthread_cond_t *cond); +int pthread_attr_init(pthread_attr_t *connect_att); +int pthread_attr_setstacksize(pthread_attr_t *connect_att,DWORD stack); +int pthread_attr_setprio(pthread_attr_t *connect_att,int priority); +int pthread_attr_destroy(pthread_attr_t *connect_att); +struct tm *localtime_r(const time_t *timep,struct tm *tmp); + +void pthread_exit(void *a); /* was #define pthread_exit(A) ExitThread(A)*/ + +#ifndef OS2 +#define getpid() GetCurrentThreadId() +#endif + +#define HAVE_LOCALTIME_R 1 +#define _REENTRANT 1 +#define HAVE_PTHREAD_ATTR_SETSTACKSIZE 1 + +#undef SAFE_MUTEX /* This will cause conflicts */ +#define pthread_key(T,V) DWORD V +#define pthread_key_create(A,B) ((*A=TlsAlloc())==0xFFFFFFFF) +#define pthread_getspecific(A) (TlsGetValue(A)) +#define my_pthread_getspecific(T,A) ((T) TlsGetValue(A)) +#define my_pthread_getspecific_ptr(T,V) ((T) TlsGetValue(V)) +#define my_pthread_setspecific_ptr(T,V) (!TlsSetValue((T),(V))) +#define pthread_setspecific(A,B) (!TlsSetValue((A),(B))) + + +#define pthread_equal(A,B) ((A) == (B)) + +#define pthread_mutex_init(A,B) InitializeCriticalSection(A) +#define pthread_mutex_lock(A) (EnterCriticalSection(A),0) +#define pthread_mutex_trylock(A) (WaitForSingleObject((A), 0) == WAIT_TIMEOUT) +#define pthread_mutex_unlock(A) LeaveCriticalSection(A) +#define pthread_mutex_destroy(A) DeleteCriticalSection(A) +#define my_pthread_setprio(A,B) SetThreadPriority(GetCurrentThread(), (B)) +#define pthread_kill(A,B) pthread_dummy(0) + + +/* Dummy defines for easier code */ +#define pthread_attr_setdetachstate(A,B) pthread_dummy(0) +#define my_pthread_attr_setprio(A,B) pthread_attr_setprio(A,B) +#define pthread_attr_setscope(A,B) +#define pthread_detach_this_thread() +#define pthread_condattr_init(A) +#define pthread_condattr_destroy(A) + +/*Irena: compiler does not like this: */ +/*#define my_pthread_getprio(pthread_t thread_id) pthread_dummy(0) */ +#define my_pthread_getprio(thread_id) pthread_dummy(0) + +#elif defined(HAVE_UNIXWARE7_THREADS) + +#include <thread.h> +#include <synch.h> + +#ifndef _REENTRANT +#define _REENTRANT +#endif + +#define HAVE_NONPOSIX_SIGWAIT +#define pthread_t thread_t +#define pthread_cond_t cond_t +#define pthread_mutex_t mutex_t +#define pthread_key_t thread_key_t +typedef int pthread_attr_t; /* Needed by Unixware 7.0.0 */ + +#define pthread_key_create(A,B) thr_keycreate((A),(B)) + +#define pthread_handler_decl(A,B) void *A(void *B) +#define pthread_key(T,V) pthread_key_t V + +void * my_pthread_getspecific_imp(pthread_key_t key); +#define my_pthread_getspecific(A,B) ((A) my_pthread_getspecific_imp(B)) +#define my_pthread_getspecific_ptr(T,V) my_pthread_getspecific(T,V) + +#define pthread_setspecific(A,B) thr_setspecific(A,B) +#define my_pthread_setspecific_ptr(T,V) pthread_setspecific(T,V) + +#define pthread_create(A,B,C,D) thr_create(NULL,65536L,(C),(D),THR_DETACHED,(A)) +#define pthread_cond_init(a,b) cond_init((a),USYNC_THREAD,NULL) +#define pthread_cond_destroy(a) cond_destroy(a) +#define pthread_cond_signal(a) cond_signal(a) +#define pthread_cond_wait(a,b) cond_wait((a),(b)) +#define pthread_cond_timedwait(a,b,c) cond_timedwait((a),(b),(c)) +#define pthread_cond_broadcast(a) cond_broadcast(a) + +#define pthread_mutex_init(a,b) mutex_init((a),USYNC_THREAD,NULL) +#define pthread_mutex_lock(a) mutex_lock(a) +#define pthread_mutex_unlock(a) mutex_unlock(a) +#define pthread_mutex_destroy(a) mutex_destroy(a) + +#define pthread_self() thr_self() +#define pthread_exit(A) thr_exit(A) +#define pthread_equal(A,B) (((A) == (B)) ? 1 : 0) +#define pthread_kill(A,B) thr_kill((A),(B)) +#define HAVE_PTHREAD_KILL + +#define pthread_sigmask(A,B,C) thr_sigsetmask((A),(B),(C)) + +extern int my_sigwait(const sigset_t *set,int *sig); + +#define pthread_detach_this_thread() pthread_dummy(0) + +#define pthread_attr_init(A) pthread_dummy(0) +#define pthread_attr_destroy(A) pthread_dummy(0) +#define pthread_attr_setscope(A,B) pthread_dummy(0) +#define pthread_attr_setdetachstate(A,B) pthread_dummy(0) +#define my_pthread_setprio(A,B) pthread_dummy (0) +#define my_pthread_getprio(A) pthread_dummy (0) +#define my_pthread_attr_setprio(A,B) pthread_dummy(0) + +#else /* Normal threads */ + +#ifdef HAVE_rts_threads +#define sigwait org_sigwait +#include <signal.h> +#undef sigwait +#endif +#undef _REENTRANT /* Fix if _REENTRANT is in pthread.h */ +#include <pthread.h> +#ifndef _REENTRANT +#define _REENTRANT +#endif +#ifdef HAVE_THR_SETCONCURRENCY +#include <thread.h> /* Probably solaris */ +#endif +#ifdef HAVE_SCHED_H +#include <sched.h> +#endif +#ifdef HAVE_SYNCH_H +#include <synch.h> +#endif +#if defined(__EMX__) && (!defined(EMX_PTHREAD_REV) || (EMX_PTHREAD_REV < 2)) +#error Requires at least rev 2 of EMX pthreads library. +#endif + +extern int my_pthread_getprio(pthread_t thread_id); + +#define pthread_key(T,V) pthread_key_t V +#define my_pthread_getspecific_ptr(T,V) my_pthread_getspecific(T,(V)) +#define my_pthread_setspecific_ptr(T,V) pthread_setspecific(T,(void*) (V)) +#define pthread_detach_this_thread() +#define pthread_handler_decl(A,B) void *A(void *B) +typedef void *(* pthread_handler)(void *); + +/* Test first for RTS or FSU threads */ + +#if defined(PTHREAD_SCOPE_GLOBAL) && !defined(PTHREAD_SCOPE_SYSTEM) +#define HAVE_rts_threads +extern int my_pthread_create_detached; +#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C)) +#define PTHREAD_CREATE_DETACHED &my_pthread_create_detached +#define PTHREAD_SCOPE_SYSTEM PTHREAD_SCOPE_GLOBAL +#define PTHREAD_SCOPE_PROCESS PTHREAD_SCOPE_LOCAL +#define USE_ALARM_THREAD +#endif /* defined(PTHREAD_SCOPE_GLOBAL) && !defined(PTHREAD_SCOPE_SYSTEM) */ + +#if defined(HAVE_UNIXWARE7_POSIX) +#undef HAVE_NONPOSIX_SIGWAIT +#define HAVE_NONPOSIX_SIGWAIT /* sigwait takes only 1 argument */ +#endif + +#ifndef HAVE_NONPOSIX_SIGWAIT +#define my_sigwait(A,B) sigwait((A),(B)) +#else +int my_sigwait(const sigset_t *set,int *sig); +#endif + +#ifdef HAVE_NONPOSIX_PTHREAD_MUTEX_INIT +#ifndef SAFE_MUTEX +#define pthread_mutex_init(a,b) my_pthread_mutex_init((a),(b)) +extern int my_pthread_mutex_init(pthread_mutex_t *mp, + const pthread_mutexattr_t *attr); +#endif /* SAFE_MUTEX */ +#define pthread_cond_init(a,b) my_pthread_cond_init((a),(b)) +extern int my_pthread_cond_init(pthread_cond_t *mp, + const pthread_condattr_t *attr); +#endif /* HAVE_NONPOSIX_PTHREAD_MUTEX_INIT */ + +#if defined(HAVE_SIGTHREADMASK) && !defined(HAVE_PTHREAD_SIGMASK) +#define pthread_sigmask(A,B,C) sigthreadmask((A),(B),(C)) +#endif + +#if !defined(HAVE_SIGWAIT) && !defined(HAVE_mit_thread) && !defined(HAVE_rts_threads) && !defined(sigwait) && !defined(alpha_linux_port) && !defined(HAVE_NONPOSIX_SIGWAIT) && !defined(HAVE_DEC_3_2_THREADS) && !defined(_AIX) +int sigwait(sigset_t *setp, int *sigp); /* Use our implemention */ +#endif +#if !defined(HAVE_SIGSET) && !defined(my_sigset) +#define my_sigset(A,B) do { struct sigaction s; sigset_t set; \ + sigemptyset(&set); \ + s.sa_handler = (B); \ + s.sa_mask = set; \ + s.sa_flags = 0; \ + sigaction((A), &s, (struct sigaction *) NULL); \ + } while (0) +#elif !defined(my_sigset) + #define my_sigset(A,B) signal((A),(B)) +#endif + +#ifndef my_pthread_setprio +#if defined(HAVE_PTHREAD_SETPRIO_NP) /* FSU threads */ +#define my_pthread_setprio(A,B) pthread_setprio_np((A),(B)) +#elif defined(HAVE_PTHREAD_SETPRIO) +#define my_pthread_setprio(A,B) pthread_setprio((A),(B)) +#else +extern void my_pthread_setprio(pthread_t thread_id,int prior); +#endif +#endif + +#ifndef my_pthread_attr_setprio +#ifdef HAVE_PTHREAD_ATTR_SETPRIO +#define my_pthread_attr_setprio(A,B) pthread_attr_setprio((A),(B)) +#else +extern void my_pthread_attr_setprio(pthread_attr_t *attr, int priority); +#endif +#endif + +#if !defined(HAVE_PTHREAD_ATTR_SETSCOPE) || defined(HAVE_DEC_3_2_THREADS) +#define pthread_attr_setscope(A,B) +#undef HAVE_GETHOSTBYADDR_R /* No definition */ +#endif + +#if defined(HAVE_BROKEN_PTHREAD_COND_TIMEDWAIT) && !defined(SAFE_MUTEX) +extern int my_pthread_cond_timedwait(pthread_cond_t *cond, + pthread_mutex_t *mutex, + struct timespec *abstime); +#define pthread_cond_timedwait(A,B,C) my_pthread_cond_timedwait((A),(B),(C)) +#endif + +#if !defined( HAVE_NONPOSIX_PTHREAD_GETSPECIFIC) +#define my_pthread_getspecific(A,B) ((A) pthread_getspecific(B)) +#else +#define my_pthread_getspecific(A,B) ((A) my_pthread_getspecific_imp(B)) +void *my_pthread_getspecific_imp(pthread_key_t key); +#endif + +#ifndef HAVE_LOCALTIME_R +struct tm *localtime_r(const time_t *clock, struct tm *res); +#endif + +#ifdef HAVE_PTHREAD_CONDATTR_CREATE +/* DCE threads on HPUX 10.20 */ +#define pthread_condattr_init pthread_condattr_create +#define pthread_condattr_destroy pthread_condattr_delete +#endif + +#ifdef HAVE_CTHREADS_WRAPPER /* For MacOSX */ +#define pthread_cond_destroy(A) pthread_dummy(0) +#define pthread_mutex_destroy(A) pthread_dummy(0) +#define pthread_attr_delete(A) pthread_dummy(0) +#define pthread_condattr_delete(A) pthread_dummy(0) +#define pthread_attr_setstacksize(A,B) pthread_dummy(0) +#define pthread_equal(A,B) ((A) == (B)) +#define pthread_cond_timedwait(a,b,c) pthread_cond_wait((a),(b)) +#define pthread_attr_init(A) pthread_attr_create(A) +#define pthread_attr_destroy(A) pthread_attr_delete(A) +#define pthread_attr_setdetachstate(A,B) pthread_dummy(0) +#define pthread_create(A,B,C,D) pthread_create((A),*(B),(C),(D)) +#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C)) +#define pthread_kill(A,B) pthread_dummy(0) +#undef pthread_detach_this_thread +#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(&tmp); } +#endif + +#ifdef HAVE_DARWIN_THREADS +#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C)) +#define pthread_kill(A,B) pthread_dummy(0) +#define pthread_condattr_init(A) pthread_dummy(0) +#define pthread_condattr_destroy(A) pthread_dummy(0) +#define pthread_signal(A,B) pthread_dummy(0) +#undef pthread_detach_this_thread +#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(tmp); } +#undef sigset +#define sigset(A,B) pthread_signal((A),(void (*)(int)) (B)) +#endif + +#if ((defined(HAVE_PTHREAD_ATTR_CREATE) && !defined(HAVE_SIGWAIT)) || defined(HAVE_DEC_3_2_THREADS)) && !defined(HAVE_CTHREADS_WRAPPER) +/* This is set on AIX_3_2 and Siemens unix (and DEC OSF/1 3.2 too) */ +#define pthread_key_create(A,B) \ + pthread_keycreate(A,(B) ?\ + (pthread_destructor_t) (B) :\ + (pthread_destructor_t) pthread_dummy) +#define pthread_attr_init(A) pthread_attr_create(A) +#define pthread_attr_destroy(A) pthread_attr_delete(A) +#define pthread_attr_setdetachstate(A,B) pthread_dummy(0) +#define pthread_create(A,B,C,D) pthread_create((A),*(B),(C),(D)) +#ifndef pthread_sigmask +#define pthread_sigmask(A,B,C) sigprocmask((A),(B),(C)) +#endif +#define pthread_kill(A,B) pthread_dummy(0) +#undef pthread_detach_this_thread +#define pthread_detach_this_thread() { pthread_t tmp=pthread_self() ; pthread_detach(&tmp); } ++#elif !defined(HAVE_PTHREAD_KILL) /* HAVE_PTHREAD_ATTR_CREATE && !HAVE_SIGWAIT */ +#define HAVE_PTHREAD_KILL +#endif + +#endif /* defined(_WIN32) */ + +#if defined(HPUX) && !defined(DONT_REMAP_PTHREAD_FUNCTIONS) +#undef pthread_cond_timedwait +#define pthread_cond_timedwait(a,b,c) my_pthread_cond_timedwait((a),(b),(c)) +int my_pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, + struct timespec *abstime); +#endif + +#if defined(HAVE_POSIX1003_4a_MUTEX) && !defined(DONT_REMAP_PTHREAD_FUNCTIONS) +#undef pthread_mutex_trylock +#define pthread_mutex_trylock(a) my_pthread_mutex_trylock((a)) +int my_pthread_mutex_trylock(pthread_mutex_t *mutex); +#endif + + /* safe_mutex adds checking to mutex for easier debugging */ + +typedef struct st_safe_mutex_t +{ + pthread_mutex_t global,mutex; + char *file; + uint line,count; + pthread_t thread; +} safe_mutex_t; + +int safe_mutex_init(safe_mutex_t *mp, const pthread_mutexattr_t *attr); +int safe_mutex_lock(safe_mutex_t *mp,const char *file, uint line); +int safe_mutex_unlock(safe_mutex_t *mp,const char *file, uint line); +int safe_mutex_destroy(safe_mutex_t *mp,const char *file, uint line); +int safe_cond_wait(pthread_cond_t *cond, safe_mutex_t *mp,const char *file, + uint line); +int safe_cond_timedwait(pthread_cond_t *cond, safe_mutex_t *mp, + struct timespec *abstime, const char *file, uint line); + + /* Wrappers if safe mutex is actually used */ +#ifdef SAFE_MUTEX +#undef pthread_mutex_init +#undef pthread_mutex_lock +#undef pthread_mutex_unlock +#undef pthread_mutex_destroy +#undef pthread_mutex_wait +#undef pthread_mutex_timedwait +#undef pthread_mutex_t +#undef pthread_cond_wait +#undef pthread_cond_timedwait +#undef pthread_mutex_trylock +#define pthread_mutex_init(A,B) safe_mutex_init((A),(B)) +#define pthread_mutex_lock(A) safe_mutex_lock((A),__FILE__,__LINE__) +#define pthread_mutex_unlock(A) safe_mutex_unlock((A),__FILE__,__LINE__) +#define pthread_mutex_destroy(A) safe_mutex_destroy((A),__FILE__,__LINE__) +#define pthread_cond_wait(A,B) safe_cond_wait((A),(B),__FILE__,__LINE__) +#define pthread_cond_timedwait(A,B,C) safe_cond_timedwait((A),(B),(C),__FILE__,__LINE__) +#define pthread_mutex_trylock(A) pthread_mutex_lock(A) +#define pthread_mutex_t safe_mutex_t +#define safe_mutex_assert_owner(mp) DBUG_ASSERT((mp)->count > 0 && pthread_equal(pthread_self(),(mp)->thread)) +#else +#define safe_mutex_assert_owner(mp) +#endif /* SAFE_MUTEX */ + + /* READ-WRITE thread locking */ + +#if defined(USE_MUTEX_INSTEAD_OF_RW_LOCKS) +/* use these defs for simple mutex locking */ +#define rw_lock_t pthread_mutex_t +#define my_rwlock_init(A,B) pthread_mutex_init((A),(B)) +#define rw_rdlock(A) pthread_mutex_lock((A)) +#define rw_wrlock(A) pthread_mutex_lock((A)) +#define rw_tryrdlock(A) pthread_mutex_trylock((A)) +#define rw_trywrlock(A) pthread_mutex_trylock((A)) +#define rw_unlock(A) pthread_mutex_unlock((A)) +#define rwlock_destroy(A) pthread_mutex_destroy((A)) +#elif defined(HAVE_PTHREAD_RWLOCK_RDLOCK) +#define rw_lock_t pthread_rwlock_t +#define my_rwlock_init(A,B) pthread_rwlock_init((A),(B)) +#define rw_rdlock(A) pthread_rwlock_rdlock(A) +#define rw_wrlock(A) pthread_rwlock_wrlock(A) +#define rw_tryrdlock(A) pthread_rwlock_tryrdlock((A)) +#define rw_trywrlock(A) pthread_rwlock_trywrlock((A)) +#define rw_unlock(A) pthread_rwlock_unlock(A) +#define rwlock_destroy(A) pthread_rwlock_destroy(A) +#elif defined(HAVE_RWLOCK_INIT) +#ifdef HAVE_RWLOCK_T /* For example Solaris 2.6-> */ +#define rw_lock_t rwlock_t +#endif +#define my_rwlock_init(A,B) rwlock_init((A),USYNC_THREAD,0) +#else +/* Use our own version of read/write locks */ +typedef struct _my_rw_lock_t { + pthread_mutex_t lock; /* lock for structure */ + pthread_cond_t readers; /* waiting readers */ + pthread_cond_t writers; /* waiting writers */ + int state; /* -1:writer,0:free,>0:readers */ + int waiters; /* number of waiting writers */ +} my_rw_lock_t; + +#define rw_lock_t my_rw_lock_t +#define rw_rdlock(A) my_rw_rdlock((A)) +#define rw_wrlock(A) my_rw_wrlock((A)) +#define rw_tryrdlock(A) my_rw_tryrdlock((A)) +#define rw_trywrlock(A) my_rw_trywrlock((A)) +#define rw_unlock(A) my_rw_unlock((A)) +#define rwlock_destroy(A) my_rwlock_destroy((A)) + +extern int my_rwlock_init(my_rw_lock_t *, void *); +extern int my_rwlock_destroy(my_rw_lock_t *); +extern int my_rw_rdlock(my_rw_lock_t *); +extern int my_rw_wrlock(my_rw_lock_t *); +extern int my_rw_unlock(my_rw_lock_t *); +extern int my_rw_tryrdlock(my_rw_lock_t *); +extern int my_rw_trywrlock(my_rw_lock_t *); +#endif /* USE_MUTEX_INSTEAD_OF_RW_LOCKS */ + +#define GETHOSTBYADDR_BUFF_SIZE 2048 + +#ifndef HAVE_THR_SETCONCURRENCY +#define thr_setconcurrency(A) pthread_dummy(0) +#endif +#if !defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE) && ! defined(pthread_attr_setstacksize) +#define pthread_attr_setstacksize(A,B) pthread_dummy(0) +#endif + +/* Define mutex types */ +#define MY_MUTEX_INIT_SLOW NULL +#define MY_MUTEX_INIT_FAST NULL +#define MY_MUTEX_INIT_ERRCHK NULL + +extern my_bool my_thread_global_init(void); +extern void my_thread_global_end(void); +extern my_bool my_thread_init(void); +extern void my_thread_end(void); +extern const char *my_thread_name(void); +extern long my_thread_id(void); +extern int pthread_no_free(void *); +extern int pthread_dummy(int); + +/* All thread specific variables are in the following struct */ + +#define THREAD_NAME_SIZE 10 +#if defined(__ia64__) +#define DEFAULT_THREAD_STACK (128*1024) +#else +#define DEFAULT_THREAD_STACK (64*1024) +#endif + +struct st_my_thread_var +{ + int thr_errno; + pthread_cond_t suspend; + pthread_mutex_t mutex; + pthread_mutex_t * volatile current_mutex; + pthread_cond_t * volatile current_cond; + pthread_t pthread_self; + long id; + int cmp_length; + int volatile abort; +#ifndef DBUG_OFF + gptr dbug; + char name[THREAD_NAME_SIZE+1]; +#endif + my_bool initialized; +}; + +extern struct st_my_thread_var *_my_thread_var(void) __attribute__ ((const)); +extern void **my_thread_var_dbug(); +#define my_thread_var (_my_thread_var()) +#define my_errno my_thread_var->thr_errno + + /* statistics_xxx functions are for not essential statistic */ + +#ifndef thread_safe_increment +#ifdef HAVE_ATOMIC_ADD +#define thread_safe_increment(V,L) atomic_add(1,(atomic_t*) &V); +#define thread_safe_add(V,C,L) atomic_add((C),(atomic_t*) &V); +#define thread_safe_sub(V,C,L) atomic_sub((C),(atomic_t*) &V); +#define statistic_increment(V,L) thread_safe_increment((V),(L)) +#define statistic_add(V,C,L) thread_safe_add((V),(C),(L)) +#else +#define thread_safe_increment(V,L) \ + pthread_mutex_lock((L)); (V)++; pthread_mutex_unlock((L)); +#define thread_safe_add(V,C,L) \ + pthread_mutex_lock((L)); (V)+=(C); pthread_mutex_unlock((L)); +#define thread_safe_sub(V,C,L) \ + pthread_mutex_lock((L)); (V)-=(C); pthread_mutex_unlock((L)); +#ifdef SAFE_STATISTICS +#define statistic_increment(V,L) thread_safe_increment((V),(L)) +#define statistic_add(V,C,L) thread_safe_add((V),(C),(L)) +#else +#define statistic_increment(V,L) (V)++ +#define statistic_add(V,C,L) (V)+=(C) +#endif /* SAFE_STATISTICS */ +#endif /* HAVE_ATOMIC_ADD */ +#endif /* thread_safe_increment */ + +#ifdef __cplusplus +} +#endif + +#endif /* _my_ptread_h */ |