my_pthread.h

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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult 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., 59 Temple Place - Suite 330, Boston,
   MA 02111-1307, USA */

/* Defines to make different thread packages compatible */

#ifndef _my_pthread_h
#define _my_pthread_h

#include <errno.h>
#ifndef ETIME
#define ETIME ETIMEDOUT				/* For FreeBSD */
#endif

#ifdef  __cplusplus
extern "C" {
#endif /* __cplusplus */ 

#if defined(__WIN__) || defined(OS2)

#ifdef OS2
typedef ULONG     HANDLE;
typedef ULONG     DWORD;
typedef int sigset_t;
#endif

#ifdef OS2
typedef HMTX             pthread_mutex_t;
#else
typedef CRITICAL_SECTION pthread_mutex_t;
#endif
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;
#ifdef OS2
  HEV    semaphore;
#else
  HANDLE semaphore;
#endif
} pthread_cond_t;


#ifndef OS2
struct timespec {		/* For pthread_cond_timedwait() */
    time_t tv_sec;
    long tv_nsec;
};
#endif

typedef int pthread_mutexattr_t;
#define win_pthread_self my_thread_var->pthread_self
#ifdef OS2
#define pthread_handler_decl(A,B) void * _Optlink A(void *B)
typedef void * (_Optlink *pthread_handler)(void *);
#else
#define pthread_handler_decl(A,B) void * __cdecl A(void *B)
typedef void * (__cdecl *pthread_handler)(void *);
#endif

void win_pthread_init(void);
int win_pthread_setspecific(void *A,void *B,uint length);
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 ETIMEDOUT 145		    /* Win32 doesn't have this */
#define getpid() GetCurrentThreadId()
#endif
#define pthread_self() win_pthread_self
#define HAVE_LOCALTIME_R		1
#define _REENTRANT			1
#define HAVE_PTHREAD_ATTR_SETSTACKSIZE	1

#ifdef USE_TLS					/* For LIBMYSQL.DLL */
#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)))
#else
#define pthread_key(T,V) __declspec(thread) T V
#define pthread_key_create(A,B) pthread_dummy(0)
#define pthread_getspecific(A) (&(A))
#define my_pthread_getspecific(T,A) (&(A))
#define my_pthread_getspecific_ptr(T,V) (V)
#define my_pthread_setspecific_ptr(T,V) ((T)=(V),0)
#define pthread_setspecific(A,B) win_pthread_setspecific(&(A),(B),sizeof(A))
#endif /* USE_TLS */

#define pthread_equal(A,B) ((A) == (B))
#ifdef OS2
int pthread_mutex_init (pthread_mutex_t *, const pthread_mutexattr_t *);
int pthread_mutex_lock (pthread_mutex_t *);
int pthread_mutex_unlock (pthread_mutex_t *);
int pthread_mutex_destroy (pthread_mutex_t *);
#define my_pthread_setprio(A,B)  DosSetPriority(PRTYS_THREAD,PRTYC_NOCHANGE, B, A)
#define pthread_kill(A,B) raise(B)
#define pthread_exit(A) pthread_dummy()
#else
#define pthread_mutex_init(A,B)  InitializeCriticalSection(A)
#define pthread_mutex_lock(A)	 (EnterCriticalSection(A),0)
#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)
#endif /* OS2 */

/* 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
#elif defined(HAVE_mit_thread)
#define USE_ALARM_THREAD
#undef	HAVE_LOCALTIME_R
#define HAVE_LOCALTIME_R
#undef	HAVE_PTHREAD_ATTR_SETSCOPE
#define HAVE_PTHREAD_ATTR_SETSCOPE
#undef HAVE_GETHOSTBYNAME_R_GLIBC2_STYLE	/* If we are running linux */
#undef HAVE_RWLOCK_T
#undef HAVE_RWLOCK_INIT
#undef HAVE_PTHREAD_RWLOCK_RDLOCK
#undef HAVE_SNPRINTF

#define sigset(A,B) pthread_signal((A),(void (*)(int)) (B))
#define signal(A,B) pthread_signal((A),(void (*)(int)) (B))
#define my_pthread_attr_setprio(A,B)
#endif /* defined(PTHREAD_SCOPE_GLOBAL) && !defined(PTHREAD_SCOPE_SYSTEM) */

#if defined(_BSDI_VERSION) && _BSDI_VERSION < 199910
int sigwait(sigset_t *set, int *sig);
#endif

#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 */