diff --git a/src/sbbs3/threadwrap.c b/src/sbbs3/threadwrap.c
new file mode 100644
index 0000000000000000000000000000000000000000..097f947d95c1b68fa4595024ea9ec2812ee456f7
--- /dev/null
+++ b/src/sbbs3/threadwrap.c
@@ -0,0 +1,91 @@
+/* threadwrap.c */
+
+/* Thread-related cross-platform development wrappers */
+
+/* $Id$ */
+
+/****************************************************************************
+ * @format.tab-size 4 (Plain Text/Source Code File Header) *
+ * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
+ * *
+ * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html *
+ * *
+ * 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. *
+ * See the GNU General Public License for more details: gpl.txt or *
+ * http://www.fsf.org/copyleft/gpl.html *
+ * *
+ * Anonymous FTP access to the most recent released source is available at *
+ * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
+ * *
+ * Anonymous CVS access to the development source and modification history *
+ * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
+ * (just hit return, no password is necessary) *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
+ * *
+ * For Synchronet coding style and modification guidelines, see *
+ * http://www.synchro.net/source.html *
+ * *
+ * You are encouraged to submit any modifications (preferably in Unix diff *
+ * format) via e-mail to mods@synchro.net *
+ * *
+ * Note: If this box doesn't appear square, then you need to fix your tabs. *
+ ****************************************************************************/
+
+#include "threadwrap.h" /* DLLCALL */
+
+/****************************************************************************/
+/* Wrapper for Win32 create/begin thread function */
+/* Uses POSIX threads */
+/****************************************************************************/
+#if defined(__unix__) && defined(SBBS)
+#if defined(_POSIX_THREADS)
+ulong _beginthread(void( *start_address )( void * )
+ ,unsigned stack_size, void *arglist)
+{
+ pthread_t thread;
+ pthread_attr_t attr;
+
+ pthread_attr_init(&attr); /* initialize attribute structure */
+
+ /* set thread attributes to PTHREAD_CREATE_DETACHED which will ensure
+ that thread resources are freed on exit() */
+ pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+ if(pthread_create(&thread
+ ,&attr /* default attributes */
+ /* POSIX defines this arg as "void *(*start_address)" */
+ ,(void *) start_address
+ ,arglist)==0)
+ return((int) thread /* thread handle */);
+
+ return(-1); /* error */
+}
+#else
+
+#error "Need _beginthread implementation for non-POSIX thread library."
+
+#endif
+
+#endif /* __unix__ */
+
+/****************************************************************************/
+/* Win32 implementation of POSIX sem_getvalue() function */
+/****************************************************************************/
+#ifdef _WIN32
+int DLLCALL sem_getvalue(sem_t* psem, int* val)
+{
+ if(psem==NULL || val==NULL)
+ return(-1);
+
+ if(WaitForSingleObject(*(psem),0)==WAIT_OBJECT_0)
+ *val=1;
+ else
+ *val=0;
+
+ return(0);
+}
+#endif
diff --git a/src/sbbs3/threadwrap.h b/src/sbbs3/threadwrap.h
new file mode 100644
index 0000000000000000000000000000000000000000..24c9fbe18d64baf483b031b352a02067fe26c21c
--- /dev/null
+++ b/src/sbbs3/threadwrap.h
@@ -0,0 +1,105 @@
+/* threadwrap.h */
+
+/* Thread-related cross-platform development wrappers */
+
+/* $Id$ */
+
+/****************************************************************************
+ * @format.tab-size 4 (Plain Text/Source Code File Header) *
+ * @format.use-tabs true (see http://www.synchro.net/ptsc_hdr.html) *
+ * *
+ * Copyright 2000 Rob Swindell - http://www.synchro.net/copyright.html *
+ * *
+ * 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. *
+ * See the GNU General Public License for more details: gpl.txt or *
+ * http://www.fsf.org/copyleft/gpl.html *
+ * *
+ * Anonymous FTP access to the most recent released source is available at *
+ * ftp://vert.synchro.net, ftp://cvs.synchro.net and ftp://ftp.synchro.net *
+ * *
+ * Anonymous CVS access to the development source and modification history *
+ * is available at cvs.synchro.net:/cvsroot/sbbs, example: *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs login *
+ * (just hit return, no password is necessary) *
+ * cvs -d :pserver:anonymous@cvs.synchro.net:/cvsroot/sbbs checkout src *
+ * *
+ * For Synchronet coding style and modification guidelines, see *
+ * http://www.synchro.net/source.html *
+ * *
+ * You are encouraged to submit any modifications (preferably in Unix diff *
+ * format) via e-mail to mods@synchro.net *
+ * *
+ * Note: If this box doesn't appear square, then you need to fix your tabs. *
+ ****************************************************************************/
+
+#ifndef _THREADWRAP_H
+#define _THREADWRAP_H
+
+#include "gen_defs.h" /* HANDLE */
+
+#ifdef DLLEXPORT
+#undef DLLEXPORT
+#endif
+#ifdef DLLCALL
+#undef DLLCALL
+#endif
+
+#ifdef _WIN32
+ #ifdef WRAPPER_DLL
+ #define DLLEXPORT __declspec(dllexport)
+ #else
+ #define DLLEXPORT __declspec(dllimport)
+ #endif
+ #ifdef __BORLANDC__
+ #define DLLCALL __stdcall
+ #else
+ #define DLLCALL
+ #endif
+#else /* !_WIN32 */
+ #define DLLEXPORT
+ #define DLLCALL
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __unix__
+
+ #include <pthread.h> /* POSIX threads and mutexes */
+ #include <semaphore.h> /* POSIX semaphores */
+ ulong _beginthread(void( *start_address )( void * )
+ ,unsigned stack_size, void *arglist);
+
+#elif defined(_WIN32)
+
+ /* POSIX semaphores */
+ typedef HANDLE sem_t;
+ #define sem_init(psem,ps,v) ResetEvent(*(psem))
+ #define sem_wait(psem) WaitForSingleObject(*(psem),INFINITE)
+ #define sem_post(psem) SetEvent(*(psem))
+ #define sem_destroy(psem) CloseHandle(*(psem))
+ DLLEXPORT int DLLCALL sem_getvalue(sem_t*, int* val);
+
+ /* POSIX mutexes */
+ typedef HANDLE pthread_mutex_t;
+ #define PTHREAD_MUTEX_INITIALIZER CreateMutex(NULL,FALSE,NULL)
+ #define pthread_mutex_init(pmtx,v) *(pmtx)=CreateMutex(NULL,FALSE,NULL)
+ #define pthread_mutex_lock(pmtx) WaitForSingleObject(*(pmtx),INFINITE)
+ #define pthread_mutex_unlock(pmtx) ReleaseMutex(*(pmtx))
+ #define pthread_mutex_destroy(pmtx) CloseHandle(*(pmtx))
+
+#else
+
+ #warning "Need semaphore wrappers."
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* Don't add anything after this line */