770 lines
26 KiB
C
770 lines
26 KiB
C
/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* Defines to make different thread packages compatible */
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#ifndef _my_pthread_h
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#define _my_pthread_h
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#ifndef ETIME
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#define ETIME ETIMEDOUT /* For FreeBSD */
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#endif
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#ifdef __cplusplus
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#define EXTERNC extern "C"
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extern "C" {
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#else
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#define EXTERNC
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#endif /* __cplusplus */
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#if defined(__WIN__)
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typedef CRITICAL_SECTION pthread_mutex_t;
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typedef HANDLE pthread_t;
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typedef struct thread_attr {
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DWORD dwStackSize ;
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DWORD dwCreatingFlag ;
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int priority ;
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} pthread_attr_t ;
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typedef struct { int dummy; } pthread_condattr_t;
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/* Implementation of posix conditions */
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typedef struct st_pthread_link {
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DWORD thread_id;
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struct st_pthread_link *next;
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} pthread_link;
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typedef struct {
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uint32 waiting;
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CRITICAL_SECTION lock_waiting;
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enum {
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SIGNAL= 0,
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BROADCAST= 1,
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MAX_EVENTS= 2
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} EVENTS;
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HANDLE events[MAX_EVENTS];
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HANDLE broadcast_block_event;
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} pthread_cond_t;
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typedef int pthread_mutexattr_t;
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#define win_pthread_self my_thread_var->pthread_self
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#define pthread_self() win_pthread_self
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#define pthread_handler_t EXTERNC void * __cdecl
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typedef void * (__cdecl *pthread_handler)(void *);
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/*
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Struct and macros to be used in combination with the
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windows implementation of pthread_cond_timedwait
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*/
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/*
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Declare a union to make sure FILETIME is properly aligned
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so it can be used directly as a 64 bit value. The value
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stored is in 100ns units.
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*/
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union ft64 {
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FILETIME ft;
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__int64 i64;
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};
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struct timespec {
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union ft64 tv;
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/* The max timeout value in millisecond for pthread_cond_timedwait */
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long max_timeout_msec;
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};
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#define set_timespec(ABSTIME,SEC) { \
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GetSystemTimeAsFileTime(&((ABSTIME).tv.ft)); \
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(ABSTIME).tv.i64+= (__int64)(SEC)*10000000; \
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(ABSTIME).max_timeout_msec= (long)((SEC)*1000); \
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}
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#define set_timespec_nsec(ABSTIME,NSEC) { \
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GetSystemTimeAsFileTime(&((ABSTIME).tv.ft)); \
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(ABSTIME).tv.i64+= (__int64)(NSEC)/100; \
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(ABSTIME).max_timeout_msec= (long)((NSEC)/1000000); \
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}
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void win_pthread_init(void);
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int win_pthread_setspecific(void *A,void *B,uint length);
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int win_pthread_mutex_trylock(pthread_mutex_t *mutex);
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int pthread_create(pthread_t *,pthread_attr_t *,pthread_handler,void *);
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int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr);
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int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
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int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
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struct timespec *abstime);
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int pthread_cond_signal(pthread_cond_t *cond);
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int pthread_cond_broadcast(pthread_cond_t *cond);
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int pthread_cond_destroy(pthread_cond_t *cond);
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int pthread_attr_init(pthread_attr_t *connect_att);
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int pthread_attr_setstacksize(pthread_attr_t *connect_att,DWORD stack);
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int pthread_attr_setprio(pthread_attr_t *connect_att,int priority);
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int pthread_attr_destroy(pthread_attr_t *connect_att);
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struct tm *localtime_r(const time_t *timep,struct tm *tmp);
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struct tm *gmtime_r(const time_t *timep,struct tm *tmp);
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void pthread_exit(void *a); /* was #define pthread_exit(A) ExitThread(A)*/
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#define ETIMEDOUT 145 /* Win32 doesn't have this */
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#define getpid() GetCurrentThreadId()
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#define HAVE_LOCALTIME_R 1
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#define _REENTRANT 1
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#define HAVE_PTHREAD_ATTR_SETSTACKSIZE 1
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/*
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Windows has two ways to use thread local storage. The most efficient
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is using __declspec(thread), but that does not work properly when
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used in a .dll that is loaded at runtime, after program load. So for
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libmysql.dll and libmysqld.dll we define USE_TLS in order to use the
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TlsXxx() API instead, which works in all cases.
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*/
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#ifdef USE_TLS /* For LIBMYSQL.DLL */
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#undef SAFE_MUTEX /* This will cause conflicts */
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#define pthread_key(T,V) DWORD V
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#define pthread_key_create(A,B) ((*A=TlsAlloc())==0xFFFFFFFF)
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#define pthread_key_delete(A) TlsFree(A)
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#define pthread_getspecific(A) (TlsGetValue(A))
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#define my_pthread_getspecific(T,A) ((T) TlsGetValue(A))
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#define my_pthread_getspecific_ptr(T,V) ((T) TlsGetValue(V))
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#define my_pthread_setspecific_ptr(T,V) (!TlsSetValue((T),(V)))
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#define pthread_setspecific(A,B) (!TlsSetValue((A),(B)))
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#else
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#define pthread_key(T,V) __declspec(thread) T V
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#define pthread_key_create(A,B) pthread_dummy(0)
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#define pthread_key_delete(A) pthread_dummy(0)
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#define pthread_getspecific(A) (&(A))
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#define my_pthread_getspecific(T,A) (&(A))
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#define my_pthread_getspecific_ptr(T,V) (V)
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#define my_pthread_setspecific_ptr(T,V) ((T)=(V),0)
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#define pthread_setspecific(A,B) win_pthread_setspecific(&(A),(B),sizeof(A))
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#endif /* USE_TLS */
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#define pthread_equal(A,B) ((A) == (B))
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#define pthread_mutex_init(A,B) (InitializeCriticalSection(A),0)
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#define pthread_mutex_lock(A) (EnterCriticalSection(A),0)
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#define pthread_mutex_trylock(A) win_pthread_mutex_trylock((A))
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#define pthread_mutex_unlock(A) LeaveCriticalSection(A)
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#define pthread_mutex_destroy(A) DeleteCriticalSection(A)
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#define my_pthread_setprio(A,B) SetThreadPriority(GetCurrentThread(), (B))
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#define pthread_kill(A,B) pthread_dummy((A) ? 0 : ESRCH)
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#define pthread_join(A,B) (WaitForSingleObject((A), INFINITE) != WAIT_OBJECT_0)
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/* Dummy defines for easier code */
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#define pthread_attr_setdetachstate(A,B) pthread_dummy(0)
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#define my_pthread_attr_setprio(A,B) pthread_attr_setprio(A,B)
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#define pthread_attr_setscope(A,B)
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#define pthread_detach_this_thread()
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#define pthread_condattr_init(A)
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#define pthread_condattr_destroy(A)
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#define my_pthread_getprio(thread_id) pthread_dummy(0)
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#else /* Normal threads */
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#ifdef HAVE_rts_threads
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#define sigwait org_sigwait
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#include <signal.h>
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#undef sigwait
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#endif
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#include <pthread.h>
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#ifndef _REENTRANT
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#define _REENTRANT
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#endif
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#ifdef HAVE_THR_SETCONCURRENCY
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#include <thread.h> /* Probably solaris */
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#endif
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#ifdef HAVE_SCHED_H
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#include <sched.h>
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#endif
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#ifdef HAVE_SYNCH_H
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#include <synch.h>
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#endif
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#ifdef __NETWARE__
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void my_pthread_exit(void *status);
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#define pthread_exit(A) my_pthread_exit(A)
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#endif
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extern int my_pthread_getprio(pthread_t thread_id);
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#define pthread_key(T,V) pthread_key_t V
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#define my_pthread_getspecific_ptr(T,V) my_pthread_getspecific(T,(V))
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#define my_pthread_setspecific_ptr(T,V) pthread_setspecific(T,(void*) (V))
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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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#if defined(_BSDI_VERSION) && _BSDI_VERSION < 199910
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int sigwait(sigset_t *set, int *sig);
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#endif
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#ifndef HAVE_NONPOSIX_SIGWAIT
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#define my_sigwait(A,B) sigwait((A),(B))
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#else
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int my_sigwait(const sigset_t *set,int *sig);
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#endif
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#ifdef HAVE_NONPOSIX_PTHREAD_MUTEX_INIT
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#ifndef SAFE_MUTEX
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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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#endif /* SAFE_MUTEX */
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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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#endif
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#if !defined(HAVE_SIGWAIT) && !defined(HAVE_rts_threads) && !defined(sigwait) && !defined(alpha_linux_port) && !defined(HAVE_NONPOSIX_SIGWAIT) && !defined(HAVE_DEC_3_2_THREADS) && !defined(_AIX)
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int sigwait(sigset_t *setp, int *sigp); /* Use our implemention */
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#endif
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/*
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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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*/
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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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DBUG_ASSERT((A) != 0); \
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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_s.sa_flags = 0; \
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l_rc= sigaction((A), &l_s, (struct sigaction *) NULL);\
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DBUG_ASSERT(l_rc == 0); \
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} while (0)
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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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#endif
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#ifndef my_pthread_setprio
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#if defined(HAVE_PTHREAD_SETPRIO_NP) /* FSU threads */
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#define my_pthread_setprio(A,B) pthread_setprio_np((A),(B))
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#elif defined(HAVE_PTHREAD_SETPRIO)
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#define my_pthread_setprio(A,B) pthread_setprio((A),(B))
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#elif defined(HAVE_PTHREAD_SETSCHEDPRIO)
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#define my_pthread_setprio(A,B) pthread_setschedprio((A),(B))
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#else
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extern void my_pthread_setprio(pthread_t thread_id,int prior);
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#endif
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#endif
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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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#else
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extern void my_pthread_attr_setprio(pthread_attr_t *attr, int priority);
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#endif
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#endif
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#if !defined(HAVE_PTHREAD_ATTR_SETSCOPE) || defined(HAVE_DEC_3_2_THREADS)
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#define pthread_attr_setscope(A,B)
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#undef HAVE_GETHOSTBYADDR_R /* No definition */
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#endif
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#if defined(HAVE_BROKEN_PTHREAD_COND_TIMEDWAIT) && !defined(SAFE_MUTEX)
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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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#endif
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#if !defined( HAVE_NONPOSIX_PTHREAD_GETSPECIFIC)
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#define my_pthread_getspecific(A,B) ((A) pthread_getspecific(B))
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#else
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#define my_pthread_getspecific(A,B) ((A) my_pthread_getspecific_imp(B))
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void *my_pthread_getspecific_imp(pthread_key_t key);
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#endif
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#ifndef HAVE_LOCALTIME_R
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struct tm *localtime_r(const time_t *clock, struct tm *res);
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#endif
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#ifndef HAVE_GMTIME_R
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struct tm *gmtime_r(const time_t *clock, struct tm *res);
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#endif
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#ifdef HAVE_PTHREAD_CONDATTR_CREATE
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/* DCE threads on HPUX 10.20 */
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#define pthread_condattr_init pthread_condattr_create
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#define pthread_condattr_destroy pthread_condattr_delete
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#endif
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/* FSU THREADS */
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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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#endif
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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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#endif
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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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#endif
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#if ((defined(HAVE_PTHREAD_ATTR_CREATE) && !defined(HAVE_SIGWAIT)) || defined(HAVE_DEC_3_2_THREADS)) && !defined(HAVE_CTHREADS_WRAPPER)
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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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#endif
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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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#elif !defined(__NETWARE__) /* HAVE_PTHREAD_ATTR_CREATE && !HAVE_SIGWAIT */
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#define HAVE_PTHREAD_KILL
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#endif
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#endif /* defined(__WIN__) */
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#if defined(HPUX10) && !defined(DONT_REMAP_PTHREAD_FUNCTIONS)
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#undef pthread_cond_timedwait
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#define pthread_cond_timedwait(a,b,c) my_pthread_cond_timedwait((a),(b),(c))
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int my_pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex,
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struct timespec *abstime);
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#endif
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#if defined(HPUX10)
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#define pthread_attr_getstacksize(A,B) my_pthread_attr_getstacksize(A,B)
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void my_pthread_attr_getstacksize(pthread_attr_t *attrib, size_t *size);
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#endif
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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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#endif
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/*
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The defines set_timespec and set_timespec_nsec should be used
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for calculating an absolute time at which
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pthread_cond_timedwait should timeout
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*/
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#ifdef HAVE_TIMESPEC_TS_SEC
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#ifndef set_timespec
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#define set_timespec(ABSTIME,SEC) \
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{ \
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(ABSTIME).ts_sec=time(0) + (time_t) (SEC); \
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(ABSTIME).ts_nsec=0; \
|
|
}
|
|
#endif /* !set_timespec */
|
|
#ifndef set_timespec_nsec
|
|
#define set_timespec_nsec(ABSTIME,NSEC) \
|
|
{ \
|
|
ulonglong now= my_getsystime() + (NSEC/100); \
|
|
(ABSTIME).ts_sec= (now / ULL(10000000)); \
|
|
(ABSTIME).ts_nsec= (now % ULL(10000000) * 100 + ((NSEC) % 100)); \
|
|
}
|
|
#endif /* !set_timespec_nsec */
|
|
#else
|
|
#ifndef set_timespec
|
|
#define set_timespec(ABSTIME,SEC) \
|
|
{\
|
|
struct timeval tv;\
|
|
gettimeofday(&tv,0);\
|
|
(ABSTIME).tv_sec=tv.tv_sec+(time_t) (SEC);\
|
|
(ABSTIME).tv_nsec=tv.tv_usec*1000;\
|
|
}
|
|
#endif /* !set_timespec */
|
|
#ifndef set_timespec_nsec
|
|
#define set_timespec_nsec(ABSTIME,NSEC) \
|
|
{\
|
|
ulonglong now= my_getsystime() + (NSEC/100); \
|
|
(ABSTIME).tv_sec= (time_t) (now / ULL(10000000)); \
|
|
(ABSTIME).tv_nsec= (long) (now % ULL(10000000) * 100 + ((NSEC) % 100)); \
|
|
}
|
|
#endif /* !set_timespec_nsec */
|
|
#endif /* HAVE_TIMESPEC_TS_SEC */
|
|
|
|
/* safe_mutex adds checking to mutex for easier debugging */
|
|
|
|
#if defined(__NETWARE__) && !defined(SAFE_MUTEX_DETECT_DESTROY)
|
|
#define SAFE_MUTEX_DETECT_DESTROY
|
|
#endif
|
|
|
|
typedef struct st_safe_mutex_t
|
|
{
|
|
pthread_mutex_t global,mutex;
|
|
const char *file;
|
|
uint line,count;
|
|
pthread_t thread;
|
|
#ifdef SAFE_MUTEX_DETECT_DESTROY
|
|
struct st_safe_mutex_info_t *info; /* to track destroying of mutexes */
|
|
#endif
|
|
} safe_mutex_t;
|
|
|
|
#ifdef SAFE_MUTEX_DETECT_DESTROY
|
|
/*
|
|
Used to track the destroying of mutexes. This needs to be a seperate
|
|
structure because the safe_mutex_t structure could be freed before
|
|
the mutexes are destroyed.
|
|
*/
|
|
|
|
typedef struct st_safe_mutex_info_t
|
|
{
|
|
struct st_safe_mutex_info_t *next;
|
|
struct st_safe_mutex_info_t *prev;
|
|
const char *init_file;
|
|
uint32 init_line;
|
|
} safe_mutex_info_t;
|
|
#endif /* SAFE_MUTEX_DETECT_DESTROY */
|
|
|
|
int safe_mutex_init(safe_mutex_t *mp, const pthread_mutexattr_t *attr,
|
|
const char *file, uint line);
|
|
int safe_mutex_lock(safe_mutex_t *mp, my_bool try_lock, 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);
|
|
void safe_mutex_global_init(void);
|
|
void safe_mutex_end(FILE *file);
|
|
|
|
/* 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),__FILE__,__LINE__)
|
|
#define pthread_mutex_lock(A) safe_mutex_lock((A), FALSE, __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) safe_mutex_lock((A), TRUE, __FILE__, __LINE__)
|
|
#define pthread_mutex_t safe_mutex_t
|
|
#define safe_mutex_assert_owner(mp) \
|
|
DBUG_ASSERT((mp)->count > 0 && \
|
|
pthread_equal(pthread_self(), (mp)->thread))
|
|
#define safe_mutex_assert_not_owner(mp) \
|
|
DBUG_ASSERT(! (mp)->count || \
|
|
! pthread_equal(pthread_self(), (mp)->thread))
|
|
#else
|
|
#define safe_mutex_assert_owner(mp)
|
|
#define safe_mutex_assert_not_owner(mp)
|
|
#endif /* SAFE_MUTEX */
|
|
|
|
#if defined(MY_PTHREAD_FASTMUTEX) && !defined(SAFE_MUTEX)
|
|
typedef struct st_my_pthread_fastmutex_t
|
|
{
|
|
pthread_mutex_t mutex;
|
|
uint spins;
|
|
uint rng_state;
|
|
} my_pthread_fastmutex_t;
|
|
void fastmutex_global_init(void);
|
|
|
|
int my_pthread_fastmutex_init(my_pthread_fastmutex_t *mp,
|
|
const pthread_mutexattr_t *attr);
|
|
int my_pthread_fastmutex_lock(my_pthread_fastmutex_t *mp);
|
|
|
|
#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) my_pthread_fastmutex_init((A),(B))
|
|
#define pthread_mutex_lock(A) my_pthread_fastmutex_lock(A)
|
|
#define pthread_mutex_unlock(A) pthread_mutex_unlock(&(A)->mutex)
|
|
#define pthread_mutex_destroy(A) pthread_mutex_destroy(&(A)->mutex)
|
|
#define pthread_cond_wait(A,B) pthread_cond_wait((A),&(B)->mutex)
|
|
#define pthread_cond_timedwait(A,B,C) pthread_cond_timedwait((A),&(B)->mutex,(C))
|
|
#define pthread_mutex_trylock(A) pthread_mutex_trylock(&(A)->mutex)
|
|
#define pthread_mutex_t my_pthread_fastmutex_t
|
|
#endif /* defined(MY_PTHREAD_FASTMUTEX) && !defined(SAFE_MUTEX) */
|
|
|
|
/* READ-WRITE thread locking */
|
|
|
|
#ifdef HAVE_BROKEN_RWLOCK /* For OpenUnix */
|
|
#undef HAVE_PTHREAD_RWLOCK_RDLOCK
|
|
#undef HAVE_RWLOCK_INIT
|
|
#undef HAVE_RWLOCK_T
|
|
#endif
|
|
|
|
#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, see my_thr_init.c */
|
|
#define MY_MUTEX_INIT_SLOW NULL
|
|
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
|
|
extern pthread_mutexattr_t my_fast_mutexattr;
|
|
#define MY_MUTEX_INIT_FAST &my_fast_mutexattr
|
|
#else
|
|
#define MY_MUTEX_INIT_FAST NULL
|
|
#endif
|
|
#ifdef PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP
|
|
extern pthread_mutexattr_t my_errorcheck_mutexattr;
|
|
#define MY_MUTEX_INIT_ERRCHK &my_errorcheck_mutexattr
|
|
#else
|
|
#define MY_MUTEX_INIT_ERRCHK NULL
|
|
#endif
|
|
|
|
#ifndef ESRCH
|
|
/* Define it to something */
|
|
#define ESRCH 1
|
|
#endif
|
|
|
|
typedef ulong my_thread_id;
|
|
|
|
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 my_thread_id my_thread_dbug_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
|
|
#ifndef DEFAULT_THREAD_STACK
|
|
#if SIZEOF_CHARP > 4
|
|
/*
|
|
MySQL can survive with 32K, but some glibc libraries require > 128K stack
|
|
To resolve hostnames. Also recursive stored procedures needs stack.
|
|
*/
|
|
#define DEFAULT_THREAD_STACK (256*1024L)
|
|
#else
|
|
#define DEFAULT_THREAD_STACK (192*1024)
|
|
#endif
|
|
#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;
|
|
my_thread_id id;
|
|
int cmp_length;
|
|
int volatile abort;
|
|
my_bool init;
|
|
struct st_my_thread_var *next,**prev;
|
|
void *opt_info;
|
|
#ifndef DBUG_OFF
|
|
void *dbug;
|
|
char name[THREAD_NAME_SIZE+1];
|
|
#endif
|
|
};
|
|
|
|
extern struct st_my_thread_var *_my_thread_var(void) __attribute__ ((const));
|
|
extern uint my_thread_end_wait_time;
|
|
#define my_thread_var (_my_thread_var())
|
|
#define my_errno my_thread_var->thr_errno
|
|
/*
|
|
Keep track of shutdown,signal, and main threads so that my_end() will not
|
|
report errors with them
|
|
*/
|
|
|
|
/* Which kind of thread library is in use */
|
|
|
|
#define THD_LIB_OTHER 1
|
|
#define THD_LIB_NPTL 2
|
|
#define THD_LIB_LT 4
|
|
|
|
extern uint thd_lib_detected;
|
|
|
|
/*
|
|
thread_safe_xxx functions are for critical statistic or counters.
|
|
The implementation is guaranteed to be thread safe, on all platforms.
|
|
Note that the calling code should *not* assume the counter is protected
|
|
by the mutex given, as the implementation of these helpers may change
|
|
to use my_atomic operations instead.
|
|
*/
|
|
|
|
/*
|
|
Warning:
|
|
When compiling without threads, this file is not included.
|
|
See the *other* declarations of thread_safe_xxx in include/my_global.h
|
|
|
|
Second warning:
|
|
See include/config-win.h, for yet another implementation.
|
|
*/
|
|
#ifdef THREAD
|
|
#ifndef thread_safe_increment
|
|
#define thread_safe_increment(V,L) \
|
|
(pthread_mutex_lock((L)), (V)++, pthread_mutex_unlock((L)))
|
|
#define thread_safe_decrement(V,L) \
|
|
(pthread_mutex_lock((L)), (V)--, pthread_mutex_unlock((L)))
|
|
#endif
|
|
|
|
#ifndef thread_safe_add
|
|
#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)))
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
statistics_xxx functions are for non critical statistic,
|
|
maintained in global variables.
|
|
When compiling with SAFE_STATISTICS:
|
|
- race conditions can not occur.
|
|
- some locking occurs, which may cause performance degradation.
|
|
|
|
When compiling without SAFE_STATISTICS:
|
|
- race conditions can occur, making the result slightly inaccurate.
|
|
- the lock given is not honored.
|
|
*/
|
|
#ifdef SAFE_STATISTICS
|
|
#define statistic_increment(V,L) thread_safe_increment((V),(L))
|
|
#define statistic_decrement(V,L) thread_safe_decrement((V),(L))
|
|
#define statistic_add(V,C,L) thread_safe_add((V),(C),(L))
|
|
#define statistic_sub(V,C,L) thread_safe_sub((V),(C),(L))
|
|
#else
|
|
#define statistic_decrement(V,L) (V)--
|
|
#define statistic_increment(V,L) (V)++
|
|
#define statistic_add(V,C,L) (V)+=(C)
|
|
#define statistic_sub(V,C,L) (V)-=(C)
|
|
#endif /* SAFE_STATISTICS */
|
|
|
|
/*
|
|
No locking needed, the counter is owned by the thread
|
|
*/
|
|
#define status_var_increment(V) (V)++
|
|
#define status_var_decrement(V) (V)--
|
|
#define status_var_add(V,C) (V)+=(C)
|
|
#define status_var_sub(V,C) (V)-=(C)
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* _my_ptread_h */
|