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openldap/include/ldap_int_thread.h
Kurt Zeilenga 966cef8c9a Happy New Year
2011-01-05 00:42:37 +00:00

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/* ldap_int_thread.h - ldap internal thread wrappers header file */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2011 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
LDAP_BEGIN_DECL
/* Can be done twice in libldap_r. See libldap_r/ldap_thr_debug.h. */
LDAP_F(int) ldap_int_thread_initialize LDAP_P(( void ));
LDAP_F(int) ldap_int_thread_destroy LDAP_P(( void ));
LDAP_END_DECL
#ifndef _LDAP_INT_THREAD_H
#define _LDAP_INT_THREAD_H
#if defined( HAVE_PTHREADS )
/**********************************
* *
* definitions for POSIX Threads *
* *
**********************************/
#include <pthread.h>
#ifdef HAVE_SCHED_H
#include <sched.h>
#endif
LDAP_BEGIN_DECL
typedef pthread_t ldap_int_thread_t;
typedef pthread_mutex_t ldap_int_thread_mutex_t;
typedef pthread_cond_t ldap_int_thread_cond_t;
typedef pthread_key_t ldap_int_thread_key_t;
#define ldap_int_thread_equal(a, b) pthread_equal((a), (b))
#if defined( _POSIX_REENTRANT_FUNCTIONS ) || \
defined( _POSIX_THREAD_SAFE_FUNCTIONS ) || \
defined( _POSIX_THREADSAFE_FUNCTIONS )
#define HAVE_REENTRANT_FUNCTIONS 1
#endif
#if defined( HAVE_PTHREAD_GETCONCURRENCY ) || \
defined( HAVE_THR_GETCONCURRENCY )
#define LDAP_THREAD_HAVE_GETCONCURRENCY 1
#endif
#if defined( HAVE_PTHREAD_SETCONCURRENCY ) || \
defined( HAVE_THR_SETCONCURRENCY )
#define LDAP_THREAD_HAVE_SETCONCURRENCY 1
#endif
#if defined( HAVE_PTHREAD_RWLOCK_DESTROY )
#define LDAP_THREAD_HAVE_RDWR 1
typedef pthread_rwlock_t ldap_int_thread_rdwr_t;
#endif
#ifndef LDAP_INT_MUTEX_NULL
#define LDAP_INT_MUTEX_NULL PTHREAD_MUTEX_INITIALIZER
#define LDAP_INT_MUTEX_FIRSTCREATE(m) ((void) 0)
#endif
LDAP_END_DECL
#elif defined ( HAVE_MACH_CTHREADS )
/**********************************
* *
* definitions for Mach CThreads *
* *
**********************************/
#if defined( HAVE_MACH_CTHREADS_H )
# include <mach/cthreads.h>
#elif defined( HAVE_CTHREADS_H )
# include <cthreads.h>
#endif
LDAP_BEGIN_DECL
typedef cthread_t ldap_int_thread_t;
typedef struct mutex ldap_int_thread_mutex_t;
typedef struct condition ldap_int_thread_cond_t;
typedef cthread_key_t ldap_int_thread_key_t;
#ifndef LDAP_INT_MUTEX_NULL
#define LDAP_INT_MUTEX_NULL MUTEX_INITIALIZER
#define LDAP_INT_MUTEX_FIRSTCREATE(m) ((void) 0)
#endif
LDAP_END_DECL
#elif defined( HAVE_GNU_PTH )
/***********************************
* *
* thread definitions for GNU Pth *
* *
***********************************/
#define PTH_SYSCALL_SOFT 1
#include <pth.h>
LDAP_BEGIN_DECL
typedef pth_t ldap_int_thread_t;
typedef pth_mutex_t ldap_int_thread_mutex_t;
typedef pth_cond_t ldap_int_thread_cond_t;
typedef pth_key_t ldap_int_thread_key_t;
#if 0
#define LDAP_THREAD_HAVE_RDWR 1
typedef pth_rwlock_t ldap_int_thread_rdwr_t;
#endif
#ifndef LDAP_INT_MUTEX_NULL
#define LDAP_INT_MUTEX_NULL PTH_MUTEX_INIT
#define LDAP_INT_MUTEX_FIRSTCREATE(m) ((void) 0)
#endif
LDAP_END_DECL
#elif defined( HAVE_THR )
/********************************************
* *
* thread definitions for Solaris LWP (THR) *
* *
********************************************/
#include <thread.h>
#include <synch.h>
LDAP_BEGIN_DECL
typedef thread_t ldap_int_thread_t;
typedef mutex_t ldap_int_thread_mutex_t;
typedef cond_t ldap_int_thread_cond_t;
typedef thread_key_t ldap_int_thread_key_t;
#define HAVE_REENTRANT_FUNCTIONS 1
#ifdef HAVE_THR_GETCONCURRENCY
#define LDAP_THREAD_HAVE_GETCONCURRENCY 1
#endif
#ifdef HAVE_THR_SETCONCURRENCY
#define LDAP_THREAD_HAVE_SETCONCURRENCY 1
#endif
#ifndef LDAP_INT_MUTEX_NULL
#define LDAP_INT_MUTEX_NULL DEFAULTMUTEX
#define LDAP_INT_MUTEX_FIRSTCREATE(m) ((void) 0)
#endif
#elif defined(HAVE_NT_THREADS)
/*************************************
* *
* thread definitions for NT threads *
* *
*************************************/
#include <process.h>
#include <windows.h>
LDAP_BEGIN_DECL
typedef unsigned long ldap_int_thread_t;
typedef HANDLE ldap_int_thread_mutex_t;
typedef HANDLE ldap_int_thread_cond_t;
typedef DWORD ldap_int_thread_key_t;
#ifndef LDAP_INT_MUTEX_NULL
#define LDAP_INT_MUTEX_NULL ((HANDLE)0)
#define LDAP_INT_MUTEX_FIRSTCREATE(m) \
((void) ((m) || ldap_int_thread_mutex_init(&(m))))
#endif
LDAP_END_DECL
#else
/***********************************
* *
* thread definitions for no *
* underlying library support *
* *
***********************************/
#ifndef NO_THREADS
#define NO_THREADS 1
#endif
LDAP_BEGIN_DECL
typedef int ldap_int_thread_t;
typedef int ldap_int_thread_mutex_t;
typedef int ldap_int_thread_cond_t;
typedef int ldap_int_thread_key_t;
#define LDAP_THREAD_HAVE_TPOOL 1
typedef int ldap_int_thread_pool_t;
#ifndef LDAP_INT_MUTEX_NULL
#define LDAP_INT_MUTEX_NULL 0
#define LDAP_INT_MUTEX_FIRSTCREATE(m) ((void) 0)
#endif
LDAP_END_DECL
#endif /* no threads support */
LDAP_BEGIN_DECL
#ifndef ldap_int_thread_equal
#define ldap_int_thread_equal(a, b) ((a) == (b))
#endif
#ifndef LDAP_THREAD_HAVE_RDWR
typedef struct ldap_int_thread_rdwr_s * ldap_int_thread_rdwr_t;
#endif
LDAP_F(int) ldap_int_thread_pool_startup ( void );
LDAP_F(int) ldap_int_thread_pool_shutdown ( void );
#ifndef LDAP_THREAD_HAVE_TPOOL
typedef struct ldap_int_thread_pool_s * ldap_int_thread_pool_t;
#endif
typedef struct ldap_int_thread_rmutex_s * ldap_int_thread_rmutex_t;
LDAP_END_DECL
#if defined(LDAP_THREAD_DEBUG) && !((LDAP_THREAD_DEBUG +0) & 2U)
#define LDAP_THREAD_DEBUG_WRAP 1
#endif
#ifdef LDAP_THREAD_DEBUG_WRAP
/**************************************
* *
* definitions for type-wrapped debug *
* *
**************************************/
LDAP_BEGIN_DECL
#ifndef LDAP_UINTPTR_T /* May be configured in CPPFLAGS */
#define LDAP_UINTPTR_T unsigned long
#endif
typedef enum {
ldap_debug_magic = -(int) (((unsigned)-1)/19)
} ldap_debug_magic_t;
typedef enum {
/* Could fill in "locked" etc here later */
ldap_debug_state_inited = (int) (((unsigned)-1)/11),
ldap_debug_state_destroyed
} ldap_debug_state_t;
typedef struct {
/* Enclosed in magic numbers in the hope of catching overwrites */
ldap_debug_magic_t magic; /* bit pattern to recognize usages */
LDAP_UINTPTR_T self; /* ~(LDAP_UINTPTR_T)&(this struct) */
union ldap_debug_mem_u { /* Dummy memory reference */
unsigned char *ptr;
LDAP_UINTPTR_T num;
} mem;
ldap_debug_state_t state; /* doubles as another magic number */
} ldap_debug_usage_info_t;
typedef struct {
ldap_int_thread_mutex_t wrapped;
ldap_debug_usage_info_t usage;
ldap_int_thread_t owner;
} ldap_debug_thread_mutex_t;
#define LDAP_DEBUG_MUTEX_NULL {LDAP_INT_MUTEX_NULL, {0,0,{0},0} /*,owner*/}
#define LDAP_DEBUG_MUTEX_FIRSTCREATE(m) \
((void) ((m).usage.state || ldap_pvt_thread_mutex_init(&(m))))
typedef struct {
ldap_int_thread_cond_t wrapped;
ldap_debug_usage_info_t usage;
} ldap_debug_thread_cond_t;
typedef struct {
ldap_int_thread_rdwr_t wrapped;
ldap_debug_usage_info_t usage;
} ldap_debug_thread_rdwr_t;
#ifndef NDEBUG
#define LDAP_INT_THREAD_ASSERT_MUTEX_OWNER(mutex) \
ldap_debug_thread_assert_mutex_owner( \
__FILE__, __LINE__, "owns(" #mutex ")", mutex )
LDAP_F(void) ldap_debug_thread_assert_mutex_owner LDAP_P((
LDAP_CONST char *file,
int line,
LDAP_CONST char *msg,
ldap_debug_thread_mutex_t *mutex ));
#endif /* NDEBUG */
LDAP_END_DECL
#endif /* LDAP_THREAD_DEBUG_WRAP */
#endif /* _LDAP_INT_THREAD_H */
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