svn merge https://vcxsrv.svn.sourceforge.net/svnroot/vcxsrv/branches/released

1 files changed, 199 insertions, 202 deletions

diff --git a/X11/Xthreads.h b/X11/Xthreads.h
index 54b5440ad..3d4420825 100644
--- a/X11/Xthreads.h
+++ b/X11/Xthreads.h
@@ -1,7 +1,5 @@
 /*
- * $Xorg: Xthreads.h,v 1.5 2001/02/09 02:03:23 xorgcvs Exp $
  *
- * 
 Copyright 1993, 1998  The Open Group
 
 Permission to use, copy, modify, distribute, and sell this software and its
@@ -25,80 +23,79 @@ used in advertising or otherwise to promote the sale, use or other dealings
 in this Software without prior written authorization from The Open Group.
  * *
  */
-/* $XFree86: Xthreads.h,v 3.10 2001/12/14 19:53:26 dawes Exp $ */
 
 #ifndef _XTHREADS_H_
-#define _XTHREADS_H_
+# define _XTHREADS_H_
 
 /* Redefine these to XtMalloc/XtFree or whatever you want before including
  * this header file.
  */
-#ifndef xmalloc
-#define xmalloc malloc
-#endif
-#ifndef xfree
-#define xfree free
-#endif
+# ifndef xmalloc
+#  define xmalloc malloc
+# endif
+# ifndef xfree
+#  define xfree free
+# endif
 
-#ifdef CTHREADS
-#include <cthreads.h>
+# ifdef CTHREADS
+#  include <cthreads.h>
 typedef cthread_t xthread_t;
 typedef struct condition xcondition_rec;
 typedef struct mutex xmutex_rec;
-#define xthread_init() cthread_init()
-#define xthread_self cthread_self
-#define xthread_fork(func,closure) cthread_fork(func,closure)
-#define xthread_yield() cthread_yield()
-#define xthread_exit(v) cthread_exit(v)
-#define xthread_set_name(t,str) cthread_set_name(t,str)
-#define xmutex_init(m) mutex_init(m)
-#define xmutex_clear(m) mutex_clear(m)
-#define xmutex_lock(m) mutex_lock(m)
-#define xmutex_unlock(m) mutex_unlock(m)
-#define xmutex_set_name(m,str) mutex_set_name(m,str)
-#define xcondition_init(cv) condition_init(cv)
-#define xcondition_clear(cv) condition_clear(cv)
-#define xcondition_wait(cv,m) condition_wait(cv,m)
-#define xcondition_signal(cv) condition_signal(cv)
-#define xcondition_broadcast(cv) condition_broadcast(cv)
-#define xcondition_set_name(cv,str) condition_set_name(cv,str)
-#else /* !CTHREADS */
-#if defined(SVR4) && !defined(__sgi) && !defined(_SEQUENT_)
-#include <thread.h>
-#include <synch.h>
+#  define xthread_init() cthread_init()
+#  define xthread_self cthread_self
+#  define xthread_fork(func,closure) cthread_fork(func,closure)
+#  define xthread_yield() cthread_yield()
+#  define xthread_exit(v) cthread_exit(v)
+#  define xthread_set_name(t,str) cthread_set_name(t,str)
+#  define xmutex_init(m) mutex_init(m)
+#  define xmutex_clear(m) mutex_clear(m)
+#  define xmutex_lock(m) mutex_lock(m)
+#  define xmutex_unlock(m) mutex_unlock(m)
+#  define xmutex_set_name(m,str) mutex_set_name(m,str)
+#  define xcondition_init(cv) condition_init(cv)
+#  define xcondition_clear(cv) condition_clear(cv)
+#  define xcondition_wait(cv,m) condition_wait(cv,m)
+#  define xcondition_signal(cv) condition_signal(cv)
+#  define xcondition_broadcast(cv) condition_broadcast(cv)
+#  define xcondition_set_name(cv,str) condition_set_name(cv,str)
+# else /* !CTHREADS */
+#  if defined(SVR4)
+#   include <thread.h>
+#   include <synch.h>
 typedef thread_t xthread_t;
 typedef thread_key_t xthread_key_t;
 typedef cond_t xcondition_rec;
 typedef mutex_t xmutex_rec;
-#if defined(__UNIXWARE__)
+#   if defined(__UNIXWARE__)
 extern xthread_t (*_x11_thr_self)();
-#define xthread_self  (_x11_thr_self)
-#else
-#define xthread_self thr_self
-#endif
-#define xthread_fork(func,closure) thr_create(NULL,0,func,closure,THR_NEW_LWP|THR_DETACHED,NULL)
-#define xthread_yield() thr_yield()
-#define xthread_exit(v) thr_exit(v)
-#define xthread_key_create(kp,d) thr_keycreate(kp,d)
-#ifdef sun
-#define xthread_key_delete(k) 0
-#else
-#define xthread_key_delete(k) thr_keydelete(k)
-#endif
-#define xthread_set_specific(k,v) thr_setspecific(k,v)
-#define xthread_get_specific(k,vp) thr_getspecific(k,vp)
-#define xmutex_init(m) mutex_init(m,USYNC_THREAD,0)
-#define xmutex_clear(m) mutex_destroy(m)
-#define xmutex_lock(m) mutex_lock(m)
-#define xmutex_unlock(m) mutex_unlock(m)
-#define xcondition_init(cv) cond_init(cv,USYNC_THREAD,0)
-#define xcondition_clear(cv) cond_destroy(cv)
-#define xcondition_wait(cv,m) cond_wait(cv,m)
-#define xcondition_signal(cv) cond_signal(cv)
-#define xcondition_broadcast(cv) cond_broadcast(cv)
-#else /* !SVR4 */
-#ifdef WIN32
-#include <X11/Xwindows.h>
+#    define xthread_self  (_x11_thr_self)
+#   else
+#    define xthread_self thr_self
+#   endif
+#   define xthread_fork(func,closure) thr_create(NULL,0,func,closure,THR_NEW_LWP|THR_DETACHED,NULL)
+#   define xthread_yield() thr_yield()
+#   define xthread_exit(v) thr_exit(v)
+#   define xthread_key_create(kp,d) thr_keycreate(kp,d)
+#   ifdef __sun
+#    define xthread_key_delete(k) 0
+#   else
+#    define xthread_key_delete(k) thr_keydelete(k)
+#   endif
+#   define xthread_set_specific(k,v) thr_setspecific(k,v)
+#   define xthread_get_specific(k,vp) thr_getspecific(k,vp)
+#   define xmutex_init(m) mutex_init(m,USYNC_THREAD,0)
+#   define xmutex_clear(m) mutex_destroy(m)
+#   define xmutex_lock(m) mutex_lock(m)
+#   define xmutex_unlock(m) mutex_unlock(m)
+#   define xcondition_init(cv) cond_init(cv,USYNC_THREAD,0)
+#   define xcondition_clear(cv) cond_destroy(cv)
+#   define xcondition_wait(cv,m) cond_wait(cv,m)
+#   define xcondition_signal(cv) cond_signal(cv)
+#   define xcondition_broadcast(cv) cond_broadcast(cv)
+#  else /* !SVR4 */
+#   ifdef WIN32
+#    include <X11/Xwindows.h>
 typedef DWORD xthread_t;
 typedef DWORD xthread_key_t;
 struct _xthread_waiter {
@@ -110,31 +107,31 @@ typedef struct {
     struct _xthread_waiter *waiters;
 } xcondition_rec;
 typedef CRITICAL_SECTION xmutex_rec;
-#define xthread_init() _Xthread_init()
-#define xthread_self GetCurrentThreadId
-#define xthread_fork(func,closure) { \
+#    define xthread_init() _Xthread_init()
+#    define xthread_self GetCurrentThreadId
+#    define xthread_fork(func,closure) { \
     DWORD _tmptid; \
     CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)func, (LPVOID)closure, 0, \
 		 &_tmptid); \
 }
-#define xthread_yield() Sleep(0)
-#define xthread_exit(v) ExitThread((DWORD)(v))
-#define xthread_key_create(kp,d) *(kp) = TlsAlloc()
-#define xthread_key_delete(k) TlsFree(k)
-#define xthread_set_specific(k,v) TlsSetValue(k,v)
-#define xthread_get_specific(k,vp) TlsGetValue(k)
-#define xmutex_init(m) InitializeCriticalSection(m)
-#define xmutex_clear(m) DeleteCriticalSection(m)
-#define _XMUTEX_NESTS
-#define xmutex_lock(m) EnterCriticalSection(m)
-#define xmutex_unlock(m) LeaveCriticalSection(m)
-#define xcondition_init(cv) { \
+#    define xthread_yield() Sleep(0)
+#    define xthread_exit(v) ExitThread((DWORD)(v))
+#    define xthread_key_create(kp,d) *(kp) = TlsAlloc()
+#    define xthread_key_delete(k) TlsFree(k)
+#    define xthread_set_specific(k,v) TlsSetValue(k,v)
+#    define xthread_get_specific(k,vp) TlsGetValue(k)
+#    define xmutex_init(m) InitializeCriticalSection(m)
+#    define xmutex_clear(m) DeleteCriticalSection(m)
+#    define _XMUTEX_NESTS
+#    define xmutex_lock(m) EnterCriticalSection(m)
+#    define xmutex_unlock(m) LeaveCriticalSection(m)
+#    define xcondition_init(cv) { \
     InitializeCriticalSection(&(cv)->cs); \
     (cv)->waiters = NULL; \
 }
-#define xcondition_clear(cv) DeleteCriticalSection(&(cv)->cs)
+#    define xcondition_clear(cv) DeleteCriticalSection(&(cv)->cs)
 extern struct _xthread_waiter *_Xthread_waiter();
-#define xcondition_wait(cv,m) { \
+#    define xcondition_wait(cv,m) { \
     struct _xthread_waiter *_tmpthr = _Xthread_waiter(); \
     EnterCriticalSection(&(cv)->cs); \
     _tmpthr->next = (cv)->waiters; \
@@ -144,7 +141,7 @@ extern struct _xthread_waiter *_Xthread_waiter();
     WaitForSingleObject(_tmpthr->sem, INFINITE); \
     EnterCriticalSection(m); \
 }
-#define xcondition_signal(cv) { \
+#    define xcondition_signal(cv) { \
     EnterCriticalSection(&(cv)->cs); \
     if ((cv)->waiters) { \
         ReleaseSemaphore((cv)->waiters->sem, 1, NULL); \
@@ -152,7 +149,7 @@ extern struct _xthread_waiter *_Xthread_waiter();
     } \
     LeaveCriticalSection(&(cv)->cs); \
 }
-#define xcondition_broadcast(cv) { \
+#    define xcondition_broadcast(cv) { \
     struct _xthread_waiter *_tmpthr; \
     EnterCriticalSection(&(cv)->cs); \
     for (_tmpthr = (cv)->waiters; _tmpthr; _tmpthr = _tmpthr->next) \
@@ -160,157 +157,157 @@ extern struct _xthread_waiter *_Xthread_waiter();
     (cv)->waiters = NULL; \
     LeaveCriticalSection(&(cv)->cs); \
 }
-#else /* !WIN32 */
-#ifdef USE_TIS_SUPPORT
+#   else /* !WIN32 */
+#    ifdef USE_TIS_SUPPORT
 /*
  * TIS support is intended for thread safe libraries.
  * This should not be used for general client programming.
  */
-#include <tis.h>
+#     include <tis.h>
 typedef pthread_t xthread_t;
 typedef pthread_key_t xthread_key_t;
 typedef pthread_cond_t xcondition_rec;
 typedef pthread_mutex_t xmutex_rec;
-#define xthread_self tis_self
-#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
+#     define xthread_self tis_self
+#     define xthread_fork(func,closure) { pthread_t _tmpxthr; \
         pthread_create(&_tmpxthr,NULL,func,closure); }
-#define xthread_yield() pthread_yield_np()
-#define xthread_exit(v) pthread_exit(v)
-#define xthread_key_create(kp,d) tis_key_create(kp,d)
-#define xthread_key_delete(k) tis_key_delete(k)
-#define xthread_set_specific(k,v) tis_setspecific(k,v)
-#define xthread_get_specific(k,vp) *(vp) = tis_getspecific(k)
-#define XMUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
-#define xmutex_init(m) tis_mutex_init(m)
-#define xmutex_clear(m) tis_mutex_destroy(m)
-#define xmutex_lock(m) tis_mutex_lock(m)
-#define xmutex_unlock(m) tis_mutex_unlock(m)
-#define xcondition_init(c) tis_cond_init(c)
-#define xcondition_clear(c) tis_cond_destroy(c)
-#define xcondition_wait(c,m) tis_cond_wait(c,m)
-#define xcondition_signal(c) tis_cond_signal(c)
-#define xcondition_broadcast(c) tis_cond_broadcast(c)
-#else
-#ifdef USE_NBSD_THREADLIB
+#     define xthread_yield() pthread_yield_np()
+#     define xthread_exit(v) pthread_exit(v)
+#     define xthread_key_create(kp,d) tis_key_create(kp,d)
+#     define xthread_key_delete(k) tis_key_delete(k)
+#     define xthread_set_specific(k,v) tis_setspecific(k,v)
+#     define xthread_get_specific(k,vp) *(vp) = tis_getspecific(k)
+#     define XMUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+#     define xmutex_init(m) tis_mutex_init(m)
+#     define xmutex_clear(m) tis_mutex_destroy(m)
+#     define xmutex_lock(m) tis_mutex_lock(m)
+#     define xmutex_unlock(m) tis_mutex_unlock(m)
+#     define xcondition_init(c) tis_cond_init(c)
+#     define xcondition_clear(c) tis_cond_destroy(c)
+#     define xcondition_wait(c,m) tis_cond_wait(c,m)
+#     define xcondition_signal(c) tis_cond_signal(c)
+#     define xcondition_broadcast(c) tis_cond_broadcast(c)
+#    else
+#     ifdef USE_NBSD_THREADLIB
 /*
  * NetBSD threadlib support is intended for thread safe libraries.
  * This should not be used for general client programming.
  */
-#include <threadlib.h>
+#      include <threadlib.h>
 typedef thr_t xthread_t;
 typedef thread_key_t xthread_key_t;
 typedef cond_t xcondition_rec;
 typedef mutex_t xmutex_rec;
-#define xthread_self thr_self
-#define xthread_fork(func,closure) { thr_t _tmpxthr; \
+#      define xthread_self thr_self
+#      define xthread_fork(func,closure) { thr_t _tmpxthr; \
 	/* XXX Create it detached?  --thorpej */ \
 	thr_create(&_tmpxthr,NULL,func,closure); }
-#define xthread_yield() thr_yield()
-#define xthread_exit(v) thr_exit(v)
-#define xthread_key_create(kp,d) thr_keycreate(kp,d)
-#define xthread_key_delete(k) thr_keydelete(k)
-#define xthread_set_specific(k,v) thr_setspecific(k,v)
-#define xthread_get_specific(k,vp) *(vp) = thr_getspecific(k)
-#define XMUTEX_INITIALIZER MUTEX_INITIALIZER
-#define xmutex_init(m) mutex_init(m, 0)
-#define xmutex_clear(m) mutex_destroy(m)
-#define xmutex_lock(m) mutex_lock(m)
-#define xmutex_unlock(m) mutex_unlock(m)
-#define xcondition_init(c) cond_init(c, 0, 0)
-#define xcondition_clear(c) cond_destroy(c)
-#define xcondition_wait(c,m) cond_wait(c,m)
-#define xcondition_signal(c) cond_signal(c)
-#define xcondition_broadcast(c) cond_broadcast(c)
-#else
-#include <pthread.h>
+#      define xthread_yield() thr_yield()
+#      define xthread_exit(v) thr_exit(v)
+#      define xthread_key_create(kp,d) thr_keycreate(kp,d)
+#      define xthread_key_delete(k) thr_keydelete(k)
+#      define xthread_set_specific(k,v) thr_setspecific(k,v)
+#      define xthread_get_specific(k,vp) *(vp) = thr_getspecific(k)
+#      define XMUTEX_INITIALIZER MUTEX_INITIALIZER
+#      define xmutex_init(m) mutex_init(m, 0)
+#      define xmutex_clear(m) mutex_destroy(m)
+#      define xmutex_lock(m) mutex_lock(m)
+#      define xmutex_unlock(m) mutex_unlock(m)
+#      define xcondition_init(c) cond_init(c, 0, 0)
+#      define xcondition_clear(c) cond_destroy(c)
+#      define xcondition_wait(c,m) cond_wait(c,m)
+#      define xcondition_signal(c) cond_signal(c)
+#      define xcondition_broadcast(c) cond_broadcast(c)
+#     else
+#      include <pthread.h>
 typedef pthread_t xthread_t;
 typedef pthread_key_t xthread_key_t;
 typedef pthread_cond_t xcondition_rec;
 typedef pthread_mutex_t xmutex_rec;
-#define xthread_self pthread_self
-#define xthread_yield() pthread_yield()
-#define xthread_exit(v) pthread_exit(v)
-#define xthread_set_specific(k,v) pthread_setspecific(k,v)
-#define xmutex_clear(m) pthread_mutex_destroy(m)
-#define xmutex_lock(m) pthread_mutex_lock(m)
-#define xmutex_unlock(m) pthread_mutex_unlock(m)
-#ifndef XPRE_STANDARD_API
-#define xthread_key_create(kp,d) pthread_key_create(kp,d)
-#define xthread_key_delete(k) pthread_key_delete(k)
-#define xthread_get_specific(k,vp) *(vp) = pthread_getspecific(k)
-#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
+#      define xthread_self pthread_self
+#      define xthread_yield() pthread_yield()
+#      define xthread_exit(v) pthread_exit(v)
+#      define xthread_set_specific(k,v) pthread_setspecific(k,v)
+#      define xmutex_clear(m) pthread_mutex_destroy(m)
+#      define xmutex_lock(m) pthread_mutex_lock(m)
+#      define xmutex_unlock(m) pthread_mutex_unlock(m)
+#      ifndef XPRE_STANDARD_API
+#       define xthread_key_create(kp,d) pthread_key_create(kp,d)
+#       define xthread_key_delete(k) pthread_key_delete(k)
+#       define xthread_get_specific(k,vp) *(vp) = pthread_getspecific(k)
+#       define xthread_fork(func,closure) { pthread_t _tmpxthr; \
 	pthread_create(&_tmpxthr,NULL,func,closure); }
-#define XMUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
-#define xmutex_init(m) pthread_mutex_init(m, NULL)
-#define xcondition_init(c) pthread_cond_init(c, NULL)
-#else /* XPRE_STANDARD_API */
-#define xthread_key_create(kp,d) pthread_keycreate(kp,d)
-#define xthread_key_delete(k) 0
-#define xthread_get_specific(k,vp) pthread_getspecific(k,vp)
-#define xthread_fork(func,closure) { pthread_t _tmpxthr; \
+#       define XMUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+#       define xmutex_init(m) pthread_mutex_init(m, NULL)
+#       define xcondition_init(c) pthread_cond_init(c, NULL)
+#      else /* XPRE_STANDARD_API */
+#       define xthread_key_create(kp,d) pthread_keycreate(kp,d)
+#       define xthread_key_delete(k) 0
+#       define xthread_get_specific(k,vp) pthread_getspecific(k,vp)
+#       define xthread_fork(func,closure) { pthread_t _tmpxthr; \
 	pthread_create(&_tmpxthr,pthread_attr_default,func,closure); }
-#define xmutex_init(m) pthread_mutex_init(m, pthread_mutexattr_default)
-#define xcondition_init(c) pthread_cond_init(c, pthread_condattr_default)
-#endif /* XPRE_STANDARD_API */
-#define xcondition_clear(c) pthread_cond_destroy(c)
-#define xcondition_wait(c,m) pthread_cond_wait(c,m)
-#define xcondition_signal(c) pthread_cond_signal(c)
-#define xcondition_broadcast(c) pthread_cond_broadcast(c)
-#if defined(_DECTHREADS_)
+#       define xmutex_init(m) pthread_mutex_init(m, pthread_mutexattr_default)
+#       define xcondition_init(c) pthread_cond_init(c, pthread_condattr_default)
+#      endif /* XPRE_STANDARD_API */
+#      define xcondition_clear(c) pthread_cond_destroy(c)
+#      define xcondition_wait(c,m) pthread_cond_wait(c,m)
+#      define xcondition_signal(c) pthread_cond_signal(c)
+#      define xcondition_broadcast(c) pthread_cond_broadcast(c)
+#      if defined(_DECTHREADS_)
 static xthread_t _X_no_thread_id;
-#define xthread_have_id(id) !pthread_equal(id, _X_no_thread_id)
-#define xthread_clear_id(id) id = _X_no_thread_id
-#define xthread_equal(id1,id2) pthread_equal(id1, id2)
-#endif /* _DECTHREADS_ */
-#if defined(__linux__)
-#define xthread_have_id(id) !pthread_equal(id, 0)
-#define xthread_clear_id(id) id = 0
-#define xthread_equal(id1,id2) pthread_equal(id1, id2)
-#endif /* linux */
-#if defined(_CMA_VENDOR_) && defined(_CMA__IBM) && (_CMA_VENDOR_ == _CMA__IBM)
-#ifdef DEBUG			/* too much of a hack to enable normally */
+#       define xthread_have_id(id) !pthread_equal(id, _X_no_thread_id)
+#       define xthread_clear_id(id) id = _X_no_thread_id
+#       define xthread_equal(id1,id2) pthread_equal(id1, id2)
+#      endif /* _DECTHREADS_ */
+#      if defined(__linux__)
+#       define xthread_have_id(id) !pthread_equal(id, 0)
+#       define xthread_clear_id(id) id = 0
+#       define xthread_equal(id1,id2) pthread_equal(id1, id2)
+#      endif /* linux */
+#      if defined(_CMA_VENDOR_) && defined(_CMA__IBM) && (_CMA_VENDOR_ == _CMA__IBM)
+#       ifdef DEBUG		/* too much of a hack to enable normally */
 /* see also cma__obj_set_name() */
-#define xmutex_set_name(m,str) ((char**)(m)->field1)[5] = (str)
-#define xcondition_set_name(cv,str) ((char**)(cv)->field1)[5] = (str)
-#endif /* DEBUG */
-#endif /* _CMA_VENDOR_ == _CMA__IBM */
-#endif /* USE_NBSD_THREADLIB */
-#endif /* USE_TIS_SUPPORT */
-#endif /* WIN32 */
-#endif /* SVR4 */
-#endif /* CTHREADS */
+#        define xmutex_set_name(m,str) ((char**)(m)->field1)[5] = (str)
+#        define xcondition_set_name(cv,str) ((char**)(cv)->field1)[5] = (str)
+#       endif /* DEBUG */
+#      endif /* _CMA_VENDOR_ == _CMA__IBM */
+#     endif /* USE_NBSD_THREADLIB */
+#    endif /* USE_TIS_SUPPORT */
+#   endif /* WIN32 */
+#  endif /* SVR4 */
+# endif /* CTHREADS */
 typedef xcondition_rec *xcondition_t;
 typedef xmutex_rec *xmutex_t;
-#ifndef xcondition_malloc
-#define xcondition_malloc() (xcondition_t)xmalloc(sizeof(xcondition_rec))
-#endif
-#ifndef xcondition_free
-#define xcondition_free(c) xfree((char *)c)
-#endif
-#ifndef xmutex_malloc
-#define xmutex_malloc() (xmutex_t)xmalloc(sizeof(xmutex_rec))
-#endif
-#ifndef xmutex_free
-#define xmutex_free(m) xfree((char *)m)
-#endif
-#ifndef xthread_have_id
-#define xthread_have_id(id) id
-#endif
-#ifndef xthread_clear_id
-#define xthread_clear_id(id) id = 0
-#endif
-#ifndef xthread_equal
-#define xthread_equal(id1,id2) ((id1) == (id2))
-#endif
+# ifndef xcondition_malloc
+#  define xcondition_malloc() (xcondition_t)xmalloc(sizeof(xcondition_rec))
+# endif
+# ifndef xcondition_free
+#  define xcondition_free(c) xfree((char *)c)
+# endif
+# ifndef xmutex_malloc
+#  define xmutex_malloc() (xmutex_t)xmalloc(sizeof(xmutex_rec))
+# endif
+# ifndef xmutex_free
+#  define xmutex_free(m) xfree((char *)m)
+# endif
+# ifndef xthread_have_id
+#  define xthread_have_id(id) id
+# endif
+# ifndef xthread_clear_id
+#  define xthread_clear_id(id) id = 0
+# endif
+# ifndef xthread_equal
+#  define xthread_equal(id1,id2) ((id1) == (id2))
+# endif
 /* aids understood by some debuggers */
-#ifndef xthread_set_name
-#define xthread_set_name(t,str)
-#endif
-#ifndef xmutex_set_name
-#define xmutex_set_name(m,str)
-#endif
-#ifndef xcondition_set_name
-#define xcondition_set_name(cv,str)
-#endif
+# ifndef xthread_set_name
+#  define xthread_set_name(t,str)
+# endif
+# ifndef xmutex_set_name
+#  define xmutex_set_name(m,str)
+# endif
+# ifndef xcondition_set_name
+#  define xcondition_set_name(cv,str)
+# endif
 
 #endif /* _XTHREADS_H_ */