From 58964a492275ca9a59a0cd9c8155cb2491b4b909 Mon Sep 17 00:00:00 2001
From: "Ralf S. Engelschall" <rse@openssl.org>
Date: Mon, 21 Dec 1998 10:56:39 +0000
Subject: Import of old SSLeay release: SSLeay 0.9.0b

---
 crypto/threads/th-lock.c | 399 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 399 insertions(+)
 create mode 100644 crypto/threads/th-lock.c

(limited to 'crypto/threads/th-lock.c')

diff --git a/crypto/threads/th-lock.c b/crypto/threads/th-lock.c
new file mode 100644
index 0000000000..039022446d
--- /dev/null
+++ b/crypto/threads/th-lock.c
@@ -0,0 +1,399 @@
+/* crypto/threads/th-lock.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#ifdef LINUX
+#include <typedefs.h>
+#endif
+#ifdef WIN32
+#include <windows.h>
+#endif
+#ifdef SOLARIS
+#include <synch.h>
+#include <thread.h>
+#endif
+#ifdef IRIX
+#include <ulocks.h>
+#include <sys/prctl.h>
+#endif
+#include "lhash.h"
+#include "crypto.h"
+#include "buffer.h"
+#include "e_os.h"
+#include "x509.h"
+#include "ssl.h"
+#include "err.h"
+
+#ifndef NOPROTO
+int CRYPTO_thread_setup(void);
+void CRYPTO_thread_cleanup(void);
+
+static void irix_locking_callback(int mode,int type,char *file,int line);
+static void solaris_locking_callback(int mode,int type,char *file,int line);
+static void win32_locking_callback(int mode,int type,char *file,int line);
+static void pthreads_locking_callback(int mode,int type,char *file,int line);
+
+static unsigned long irix_thread_id(void );
+static unsigned long solaris_thread_id(void );
+static unsigned long pthreads_thread_id(void );
+
+#else
+int CRYPOTO_thread_setup();
+void CRYPTO_cleanup();
+
+static void irix_locking_callback();
+static void solaris_locking_callback();
+static void win32_locking_callback();
+static void pthreads_locking_callback();
+
+static unsigned long irix_thread_id();
+static unsigned long solaris_thread_id();
+static unsigned long pthreads_thread_id();
+
+#endif
+
+/* usage:
+ * CRYPTO_thread_setup();
+ * applicaion code
+ * CRYPTO_thread_cleanup();
+ */
+
+#define THREAD_STACK_SIZE (16*1024)
+
+#ifdef WIN32
+
+static HANDLE lock_cs[CRYPTO_NUM_LOCKS];
+
+int CRYPTO_thread_setup()
+	{
+	int i;
+
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+		lock_cs[i]=CreateMutex(NULL,FALSE,NULL);
+		}
+
+	CRYPTO_set_locking_callback((void (*)(int,int,char *,int))win32_locking_callback);
+	/* id callback defined */
+	return(1);
+	}
+
+static void CRYPTO_thread_cleanup()
+	{
+	int i;
+
+	CRYPTO_set_locking_callback(NULL);
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		CloseHandle(lock_cs[i]);
+	}
+
+void win32_locking_callback(mode,type,file,line)
+int mode;
+int type;
+char *file;
+int line;
+	{
+	if (mode & CRYPTO_LOCK)
+		{
+		WaitForSingleObject(lock_cs[type],INFINITE);
+		}
+	else
+		{
+		ReleaseMutex(lock_cs[type]);
+		}
+	}
+
+#endif /* WIN32 */
+
+#ifdef SOLARIS
+
+#define USE_MUTEX
+
+static mutex_t lock_cs[CRYPTO_NUM_LOCKS];
+#ifdef USE_MUTEX
+static long lock_count[CRYPTO_NUM_LOCKS];
+#else
+static rwlock_t lock_cs[CRYPTO_NUM_LOCKS];
+#endif
+
+void CRYPTO_thread_setup()
+	{
+	int i;
+
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+		lock_count[i]=0;
+#ifdef USE_MUTEX
+		mutex_init(&(lock_cs[i]),USYNC_THREAD,NULL);
+#else
+		rwlock_init(&(lock_cs[i]),USYNC_THREAD,NULL);
+#endif
+		}
+
+	CRYPTO_set_id_callback((unsigned long (*)())solaris_thread_id);
+	CRYPTO_set_locking_callback((void (*)())solaris_locking_callback);
+	}
+
+void CRYPTO_thread_cleanup()
+	{
+	int i;
+
+	CRYPTO_set_locking_callback(NULL);
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+#ifdef USE_MUTEX
+		mutex_destroy(&(lock_cs[i]));
+#else
+		rwlock_destroy(&(lock_cs[i]));
+#endif
+		}
+	}
+
+void solaris_locking_callback(mode,type,file,line)
+int mode;
+int type;
+char *file;
+int line;
+	{
+#if 0
+	fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
+		CRYPTO_thread_id(),
+		(mode&CRYPTO_LOCK)?"l":"u",
+		(type&CRYPTO_READ)?"r":"w",file,line);
+#endif
+
+#if 0
+	if (CRYPTO_LOCK_SSL_CERT == type)
+		fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
+			CRYPTO_thread_id(),
+			mode,file,line);
+#endif
+	if (mode & CRYPTO_LOCK)
+		{
+#ifdef USE_MUTEX
+		mutex_lock(&(lock_cs[type]));
+#else
+		if (mode & CRYPTO_READ)
+			rw_rdlock(&(lock_cs[type]));
+		else
+			rw_wrlock(&(lock_cs[type]));
+#endif
+		lock_count[type]++;
+		}
+	else
+		{
+#ifdef USE_MUTEX
+		mutex_unlock(&(lock_cs[type]));
+#else
+		rw_unlock(&(lock_cs[type]));
+#endif
+		}
+	}
+
+unsigned long solaris_thread_id()
+	{
+	unsigned long ret;
+
+	ret=(unsigned long)thr_self();
+	return(ret);
+	}
+#endif /* SOLARIS */
+
+#ifdef IRIX
+/* I don't think this works..... */
+
+static usptr_t *arena;
+static usema_t *lock_cs[CRYPTO_NUM_LOCKS];
+
+void CRYPTO_thread_setup()
+	{
+	int i;
+	char filename[20];
+
+	strcpy(filename,"/tmp/mttest.XXXXXX");
+	mktemp(filename);
+
+	usconfig(CONF_STHREADIOOFF);
+	usconfig(CONF_STHREADMALLOCOFF);
+	usconfig(CONF_INITUSERS,100);
+	usconfig(CONF_LOCKTYPE,US_DEBUGPLUS);
+	arena=usinit(filename);
+	unlink(filename);
+
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+		lock_cs[i]=usnewsema(arena,1);
+		}
+
+	CRYPTO_set_id_callback((unsigned long (*)())irix_thread_id);
+	CRYPTO_set_locking_callback((void (*)())irix_locking_callback);
+	}
+
+void CRYPTO_thread_cleanup()
+	{
+	int i;
+
+	CRYPTO_set_locking_callback(NULL);
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+		char buf[10];
+
+		sprintf(buf,"%2d:",i);
+		usdumpsema(lock_cs[i],stdout,buf);
+		usfreesema(lock_cs[i],arena);
+		}
+	}
+
+void irix_locking_callback(mode,type,file,line)
+int mode;
+int type;
+char *file;
+int line;
+	{
+	if (mode & CRYPTO_LOCK)
+		{
+		uspsema(lock_cs[type]);
+		}
+	else
+		{
+		usvsema(lock_cs[type]);
+		}
+	}
+
+unsigned long irix_thread_id()
+	{
+	unsigned long ret;
+
+	ret=(unsigned long)getpid();
+	return(ret);
+	}
+#endif /* IRIX */
+
+/* Linux and a few others */
+#ifdef PTHREADS
+
+static pthread_mutex_t lock_cs[CRYPTO_NUM_LOCKS];
+static long lock_count[CRYPTO_NUM_LOCKS];
+
+void CRYPTO_thread_setup()
+	{
+	int i;
+
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+		lock_count[i]=0;
+		pthread_mutex_init(&(lock_cs[i]),NULL);
+		}
+
+	CRYPTO_set_id_callback((unsigned long (*)())pthreads_thread_id);
+	CRYPTO_set_locking_callback((void (*)())pthreads_locking_callback);
+	}
+
+void thread_cleanup()
+	{
+	int i;
+
+	CRYPTO_set_locking_callback(NULL);
+	for (i=0; i<CRYPTO_NUM_LOCKS; i++)
+		{
+		pthread_mutex_destroy(&(lock_cs[i]));
+		}
+	}
+
+void pthreads_locking_callback(mode,type,file,line)
+int mode;
+int type;
+char *file;
+int line;
+      {
+#if 0
+	fprintf(stderr,"thread=%4d mode=%s lock=%s %s:%d\n",
+		CRYPTO_thread_id(),
+		(mode&CRYPTO_LOCK)?"l":"u",
+		(type&CRYPTO_READ)?"r":"w",file,line);
+#endif
+#if 0
+	if (CRYPTO_LOCK_SSL_CERT == type)
+		fprintf(stderr,"(t,m,f,l) %ld %d %s %d\n",
+		CRYPTO_thread_id(),
+		mode,file,line);
+#endif
+	if (mode & CRYPTO_LOCK)
+		{
+		pthread_mutex_lock(&(lock_cs[type]));
+		lock_count[type]++;
+		}
+	else
+		{
+		pthread_mutex_unlock(&(lock_cs[type]));
+		}
+	}
+
+unsigned long pthreads_thread_id()
+	{
+	unsigned long ret;
+
+	ret=(unsigned long)pthread_self();
+	return(ret);
+	}
+
+#endif /* PTHREADS */
+
-- 
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