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Commit 4e4f1841 authored by kent@mysql.com/kent-amd64.(none)'s avatar kent@mysql.com/kent-amd64.(none)
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Makefile.am, configure.in, mysys.dsp: 

  Removed unused files
.del-my_winsem.c:
  Delete: mysys/my_winsem.c
.del-my_semaphore.c:
  Delete: mysys/my_semaphore.c
.del-my_semaphore.h:
  Delete: include/my_semaphore.h
parent a5e0f606
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Showing with 2 additions and 583 deletions
VC++Files/mysys/mysys.dsp
View file @ 4e4f1841
......@@ -508,10 +508,6 @@ SOURCE=.\my_wincond.c
# End Source File
# Begin Source File
SOURCE=.\my_winsem.c
# End Source File
# Begin Source File
SOURCE=.\my_winthread.c
# End Source File
# Begin Source File
......
configure.in
View file @ 4e4f1841
......@@ -772,9 +772,6 @@ AC_CHECK_FUNC(bind, , AC_CHECK_LIB(bind, bind))
AC_CHECK_LIB(crypt, crypt)
AC_CHECK_FUNC(crypt, AC_DEFINE(HAVE_CRYPT))
# For sem_xxx functions on Solaris 2.6
AC_CHECK_FUNC(sem_init, , AC_CHECK_LIB(posix4, sem_init))
# For compress in zlib
case $SYSTEM_TYPE in
*netware* | *modesto*)
......
include/Makefile.am
View file @ 4e4f1841
......@@ -18,7 +18,7 @@
BUILT_SOURCES = mysql_version.h m_ctype.h my_config.h
pkginclude_HEADERS = my_dbug.h m_string.h my_sys.h my_list.h \
mysql.h mysql_com.h mysqld_error.h mysql_embed.h \
my_semaphore.h my_pthread.h my_no_pthread.h raid.h \
my_pthread.h my_no_pthread.h raid.h \
errmsg.h my_global.h my_net.h my_alloc.h \
my_getopt.h sslopt-longopts.h my_dir.h \
sslopt-vars.h sslopt-case.h $(BUILT_SOURCES)
......
include/my_semaphore.h deleted 100644 → 0
View file @ a5e0f606
/*
* Module: semaphore.h
*
* Purpose:
* Semaphores aren't actually part of the PThreads standard.
* They are defined by the POSIX Standard:
*
* POSIX 1003.1b-1993 (POSIX.1b)
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright (C) 1998
*
* 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
*/
/* This is hacked by Monty to be included in mysys library */
#ifndef _my_semaphore_h_
#define _my_semaphore_h_
#ifdef THREAD
C_MODE_START
#ifdef HAVE_SEMAPHORE_H
#include <semaphore.h>
#elif !defined(__bsdi__)
#ifdef __WIN__
typedef HANDLE sem_t;
#else
typedef struct {
pthread_mutex_t mutex;
pthread_cond_t cond;
uint count;
} sem_t;
#endif /* __WIN__ */
int sem_init(sem_t * sem, int pshared, unsigned int value);
int sem_destroy(sem_t * sem);
int sem_trywait(sem_t * sem);
int sem_wait(sem_t * sem);
int sem_post(sem_t * sem);
int sem_post_multiple(sem_t * sem, unsigned int count);
int sem_getvalue(sem_t * sem, unsigned int * sval);
#endif /* !__bsdi__ */
C_MODE_END
#endif /* THREAD */
#endif /* !_my_semaphore_h_ */
mysys/Makefile.am
View file @ 4e4f1841
......@@ -49,7 +49,7 @@ libmysys_a_SOURCES = my_init.c my_getwd.c mf_getdate.c\
my_quick.c my_lockmem.c my_static.c \
my_sync.c my_getopt.c my_mkdir.c \
default.c my_compress.c checksum.c raid.cc \
my_net.c my_semaphore.c my_port.c my_sleep.c \
my_net.c my_port.c my_sleep.c \
my_vsnprintf.c charset.c my_bitmap.c my_bit.c md5.c \
my_gethostbyname.c rijndael.c my_aes.c sha1.c \
my_netware.c
......
mysys/my_semaphore.c deleted 100644 → 0
View file @ a5e0f606
/* Copyright (C) 2002 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
Simple implementation of semaphores, needed to compile MySQL on systems
that doesn't support semaphores.
*/
#include <my_global.h>
#include <my_semaphore.h>
#include <errno.h>
#if !defined(__WIN__) && !defined(HAVE_SEMAPHORE_H) && defined(THREAD)
int sem_init(sem_t * sem, int pshared, uint value)
{
sem->count=value;
pthread_cond_init(&sem->cond, 0);
pthread_mutex_init(&sem->mutex, 0);
return 0;
}
int sem_destroy(sem_t * sem)
{
int err1,err2;
err1=pthread_cond_destroy(&sem->cond);
err2=pthread_mutex_destroy(&sem->mutex);
if (err1 || err2)
{
errno=err1 ? err1 : err2;
return -1;
}
return 0;
}
int sem_wait(sem_t * sem)
{
if ((errno=pthread_mutex_lock(&sem->mutex)))
return -1;
while (!sem->count)
pthread_cond_wait(&sem->cond, &sem->mutex);
if (errno)
return -1;
sem->count--; /* mutex is locked here */
pthread_mutex_unlock(&sem->mutex);
return 0;
}
int sem_trywait(sem_t * sem)
{
if ((errno=pthread_mutex_lock(&sem->mutex)))
return -1;
if (sem->count)
sem->count--;
else
errno=EAGAIN;
pthread_mutex_unlock(&sem->mutex);
return errno ? -1 : 0;
}
int sem_post(sem_t * sem)
{
if ((errno=pthread_mutex_lock(&sem->mutex)))
return -1;
sem->count++;
pthread_mutex_unlock(&sem->mutex); /* does it really matter what to do */
pthread_cond_signal(&sem->cond); /* first: x_unlock or x_signal ? */
return 0;
}
int sem_post_multiple(sem_t * sem, uint count)
{
if ((errno=pthread_mutex_lock(&sem->mutex)))
return -1;
sem->count+=count;
pthread_mutex_unlock(&sem->mutex); /* does it really matter what to do */
pthread_cond_broadcast(&sem->cond); /* first: x_unlock or x_broadcast ? */
return 0;
}
int sem_getvalue(sem_t * sem, uint *sval)
{
if ((errno=pthread_mutex_lock(&sem->mutex)))
return -1;
*sval=sem->count;
pthread_mutex_unlock(&sem->mutex);
return 0;
}
#endif /* !defined(__WIN__) && !defined(HAVE_SEMAPHORE_H) && defined(THREAD) */
mysys/my_winsem.c deleted 100644 → 0
View file @ a5e0f606
/*
* -------------------------------------------------------------
*
* Module: my_semaphore.c (Original: semaphore.c from pthreads library)
*
* Purpose:
* Semaphores aren't actually part of the PThreads standard.
* They are defined by the POSIX Standard:
*
* POSIX 1003.1b-1993 (POSIX.1b)
*
* -------------------------------------------------------------
*
* Pthreads-win32 - POSIX Threads Library for Win32
* Copyright (C) 1998
*
* 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
*/
/*
NEED_SEM is not used in MySQL and should only be needed under
Windows CE.
The big changes compared to the original version was to not allocate
any additional memory in sem_init() but to instead store everthing
we need in sem_t.
TODO:
To get HAVE_CREATESEMAPHORE we have to define the struct
in my_semaphore.h
*/
#include "mysys_priv.h"
#ifdef __WIN__
#include "my_semaphore.h"
#include <errno.h>
/*
DOCPUBLIC
This function initializes an unnamed semaphore. the
initial value of the semaphore is 'value'
PARAMETERS
sem Pointer to an instance of sem_t
pshared If zero, this semaphore may only be shared between
threads in the same process.
If nonzero, the semaphore can be shared between
processes
value Initial value of the semaphore counter
RESULTS
0 Successfully created semaphore,
-1 Failed, error in errno
ERRNO
EINVAL 'sem' is not a valid semaphore,
ENOSPC A required resource has been exhausted,
ENOSYS Semaphores are not supported,
EPERM The process lacks appropriate privilege
*/
int
sem_init (sem_t *sem, int pshared, unsigned int value)
{
int result = 0;
if (pshared != 0)
{
/*
We don't support creating a semaphore that can be shared between
processes
*/
result = EPERM;
}
else
{
#ifndef HAVE_CREATESEMAPHORE
sem->value = value;
sem->event = CreateEvent(NULL,
FALSE, /* manual reset */
FALSE, /* initial state */
NULL);
if (!sem->event)
result = ENOSPC;
else
{
if (value)
SetEvent(sem->event);
InitializeCriticalSection(&sem->sem_lock_cs);
}
#else /* HAVE_CREATESEMAPHORE */
*sem = CreateSemaphore (NULL, /* Always NULL */
value, /* Initial value */
0x7FFFFFFFL, /* Maximum value */
NULL); /* Name */
if (!*sem)
result = ENOSPC;
#endif /* HAVE_CREATESEMAPHORE */
}
if (result != 0)
{
errno = result;
return -1;
}
return 0;
} /* sem_init */
/*
DOCPUBLIC
This function destroys an unnamed semaphore.
PARAMETERS
sem Pointer to an instance of sem_t
RESULTS
0 Successfully destroyed semaphore,
-1 Failed, error in errno
ERRNO
EINVAL 'sem' is not a valid semaphore,
ENOSYS Semaphores are not supported,
EBUSY Threads (or processes) are currently blocked on 'sem'
*/
int
sem_destroy (sem_t * sem)
{
int result = 0;
#ifdef EXTRA_DEBUG
if (sem == NULL || *sem == NULL)
{
errno=EINVAL;
return;
}
#endif /* EXTRA_DEBUG */
#ifndef HAVE_CREATESEMAPHORE
if (! CloseHandle(sem->event))
result = EINVAL;
else
DeleteCriticalSection(&sem->sem_lock_cs);
#else /* HAVE_CREATESEMAPHORE */
if (!CloseHandle(*sem))
result = EINVAL;
#endif /* HAVE_CREATESEMAPHORE */
if (result)
{
errno = result;
return -1;
}
*sem=0; /* Safety */
return 0;
} /* sem_destroy */
/*
DOCPUBLIC
This function tries to wait on a semaphore. If the
semaphore value is greater than zero, it decreases
its value by one. If the semaphore value is zero, then
this function returns immediately with the error EAGAIN
PARAMETERS
sem Pointer to an instance of sem_t
RESULTS
0 Successfully decreased semaphore,
-1 Failed, error in errno
ERRNO
EAGAIN The semaphore was already locked,
EINVAL 'sem' is not a valid semaphore,
ENOSYS Semaphores are not supported,
EINTR The function was interrupted by a signal,
EDEADLK A deadlock condition was detected.
*/
int
sem_trywait(sem_t * sem)
{
#ifndef HAVE_CREATESEMAPHORE
/* not yet implemented! */
int errno = EINVAL;
return -1;
#else /* HAVE_CREATESEMAPHORE */
#ifdef EXTRA_DEBUG
if (sem == NULL || *sem == NULL)
{
errno=EINVAL;
return -1;
}
#endif /* EXTRA_DEBUG */
if (WaitForSingleObject (*sem, 0) == WAIT_TIMEOUT)
{
errno= EAGAIN;
return -1;
}
return 0;
#endif /* HAVE_CREATESEMAPHORE */
} /* sem_trywait */
#ifndef HAVE_CREATESEMAPHORE
static void
ptw32_decrease_semaphore(sem_t * sem)
{
EnterCriticalSection(&sem->sem_lock_cs);
DBUG_ASSERT(sem->value != 0);
sem->value--;
if (sem->value != 0)
SetEvent(sem->event);
LeaveCriticalSection(&sem->sem_lock_cs);
}
static BOOL
ptw32_increase_semaphore(sem_t * sem, unsigned int n)
{
BOOL result=FALSE;
EnterCriticalSection(&sem->sem_lock_cs);
if (sem->value + n > sem->value)
{
sem->value += n;
SetEvent(sem->event);
result = TRUE;
}
LeaveCriticalSection(&sem->sem_lock_cs);
return result;
}
#endif /* HAVE_CREATESEMAPHORE */
/*
------------------------------------------------------
DOCPUBLIC
This function waits on a semaphore. If the
semaphore value is greater than zero, it decreases
its value by one. If the semaphore value is zero, then
the calling thread (or process) is blocked until it can
successfully decrease the value or until interrupted by
a signal.
PARAMETERS
sem Pointer to an instance of sem_t
RESULTS
0 Successfully decreased semaphore,
-1 Failed, error in errno
ERRNO
EINVAL 'Sem' is not a valid semaphore,
ENOSYS Semaphores are not supported,
EINTR The function was interrupted by a signal,
EDEADLK A deadlock condition was detected.
*/
int
sem_wait(sem_t *sem)
{
int result;
#ifdef EXTRA_DEBUG
if (sem == NULL || *sem == NULL)
{
errno=EINVAL;
return -1;
}
#endif /* EXTRA_DEBUG */
#ifndef HAVE_CREATESEMAPHORE
result=WaitForSingleObject(sem->event, INFINITE);
#else
result=WaitForSingleObject(*sem, INFINITE);
#endif
if (result == WAIT_FAILED || result == WAIT_ABANDONED_0)
result = EINVAL;
else if (result == WAIT_TIMEOUT)
result = ETIMEDOUT;
else
result=0;
if (result)
{
errno = result;
return -1;
}
#ifndef HAVE_CREATESEMAPHORE
ptw32_decrease_semaphore(sem);
#endif /* HAVE_CREATESEMAPHORE */
return 0;
}
/*
------------------------------------------------------
DOCPUBLIC
This function posts a wakeup to a semaphore. If there
are waiting threads (or processes), one is awakened;
otherwise, the semaphore value is incremented by one.
PARAMETERS
sem Pointer to an instance of sem_t
RESULTS
0 Successfully posted semaphore,
-1 Failed, error in errno
ERRNO
EINVAL 'sem' is not a valid semaphore,
ENOSYS Semaphores are not supported,
*/
int
sem_post (sem_t * sem)
{
#ifdef EXTRA_DEBUG
if (sem == NULL || *sem == NULL)
{
errno=EINVAL;
return -1;
}
#endif /* EXTRA_DEBUG */
#ifndef HAVE_CREATESEMAPHORE
if (! ptw32_increase_semaphore(sem, 1))
#else /* HAVE_CREATESEMAPHORE */
if (! ReleaseSemaphore(*sem, 1, 0))
#endif /* HAVE_CREATESEMAPHORE */
{
errno=EINVAL;
return -1;
}
return 0;
}
/*
------------------------------------------------------
DOCPUBLIC
This function posts multiple wakeups to a semaphore. If there
are waiting threads (or processes), n <= count are awakened;
the semaphore value is incremented by count - n.
PARAMETERS
sem Pointer to an instance of sem_t
count Counter, must be greater than zero.
RESULTS
0 Successfully posted semaphore,
-1 Failed, error in errno
ERRNO
EINVAL 'sem' is not a valid semaphore or count is less
than or equal to zero.
*/
int
sem_post_multiple (sem_t * sem, unsigned int count)
{
#ifdef EXTRA_DEBUG
if (sem == NULL || *sem == NULL || count <= 0)
{
errno=EINVAL;
return -1;
}
#endif /* EXTRA_DEBUG */
#ifndef HAVE_CREATESEMAPHORE
if (! ptw32_increase_semaphore (sem, count))
#else /* HAVE_CREATESEMAPHORE */
if (! ReleaseSemaphore(*sem, count, 0))
#endif /* HAVE_CREATESEMAPHORE */
{
errno = EINVAL;
return -1;
}
return 0;
}
int
sem_getvalue (sem_t *sem, unsigned int *sval)
{
errno = ENOSYS;
return -1;
} /* sem_getvalue */
#endif /* __WIN__ */
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