Added the NetWare version of atomic.c to the build

git-svn-id: http://svn.apache.org/repos/asf/apr/apr/trunk@63197 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 110 insertions, 0 deletions

diff --git a/atomic/netware/apr_atomic.c b/atomic/netware/apr_atomic.c
new file mode 100644
index 000000000..bee38e754
--- /dev/null
+++ b/atomic/netware/apr_atomic.c
@@ -0,0 +1,110 @@
+/* ====================================================================
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000-2002 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * 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 above 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. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Apache" and "Apache Software Foundation" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache",
+ *    nor may "Apache" appear in their name, without prior written
+ *    permission of the Apache Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
+ * ITS 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.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+
+
+#include "apr.h"
+#include "apr_lock.h"
+#include "apr_thread_mutex.h"
+#include "apr_atomic.h"
+
+#if APR_HAS_THREADS
+
+#if defined(APR_ATOMIC_NEED_DEFAULT)  || defined(APR_ATOMIC_NEED_CAS_DEFAULT)
+
+#define NUM_ATOMIC_HASH 7
+/* shift by 2 to get rid of alignment issues */
+#define ATOMIC_HASH(x) (int)(((long)x>>2)%NUM_ATOMIC_HASH)
+static apr_thread_mutex_t **hash_mutex;
+
+apr_status_t apr_atomic_init(apr_pool_t *p )
+{
+    int i;
+    apr_status_t rv;
+    hash_mutex =apr_palloc(p,sizeof(apr_thread_mutex_t*) * NUM_ATOMIC_HASH);
+    for (i=0;i<NUM_ATOMIC_HASH;i++) {
+        rv = apr_thread_mutex_create(&(hash_mutex[i]), APR_THREAD_MUTEX_DEFAULT, p);
+        if (rv != APR_SUCCESS)
+           return rv;
+    }
+    return APR_SUCCESS;
+}
+#endif /* APR_ATOMIC_NEED_DEFAULT || APR_ATOMIC_NEED_CAS_DEFAULT */
+
+int apr_atomic_dec(apr_atomic_t *mem) 
+{
+    atomic_inc(mem);
+    return *mem; 
+}
+
+#if defined(APR_ATOMIC_NEED_CAS_DEFAULT)
+
+apr_uint32_t apr_atomic_cas(volatile apr_uint32_t *mem,long with, long cmp)
+{
+    apr_thread_mutex_t *lock = hash_mutex[ATOMIC_HASH(mem)];
+    long prev;
+
+    if (apr_thread_mutex_lock(lock) == APR_SUCCESS) {
+        prev = *(long*)mem;
+        if ( prev == cmp) {
+            *(long*)mem = with;
+        }
+        apr_thread_mutex_unlock(lock);
+        return prev;
+    }
+    return *(long*)mem;
+}
+#endif /* APR_ATOMIC_NEED_CAS_DEFAULT */
+
+
+#endif /* APR_HAS_THREADS */