Implement new multi-threading API

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

1 files changed, 165 insertions, 0 deletions

diff --git a/crypto/threads_none.c b/crypto/threads_none.c
new file mode 100644
index 0000000000..4e3b7a52e8
--- /dev/null
+++ b/crypto/threads_none.c
@@ -0,0 +1,165 @@
+/* ====================================================================
+ * Copyright (c) 2016 The OpenSSL Project.  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. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``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 OpenSSL PROJECT 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.
+ * ====================================================================
+ */
+
+#include <openssl/crypto.h>
+#include "internal/threads.h"
+
+#if !defined(OPENSSL_THREADS) || defined(CRYPTO_TDEBUG)
+
+CRYPTO_RWLOCK *CRYPTO_THREAD_lock_new(void)
+{
+    CRYPTO_RWLOCK *lock = OPENSSL_zalloc(sizeof(unsigned int));
+    if (lock == NULL)
+        return NULL;
+
+    *(unsigned int *)lock = 1;
+
+    return lock;
+}
+
+int CRYPTO_THREAD_read_lock(CRYPTO_RWLOCK *lock)
+{
+    OPENSSL_assert(*(unsigned int *)lock == 1);
+    return 1;
+}
+
+int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
+{
+    OPENSSL_assert(*(unsigned int *)lock == 1);
+    return 1;
+}
+
+int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)
+{
+    OPENSSL_assert(*(unsigned int *)lock == 1);
+    return 1;
+}
+
+void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock) {
+    if (lock == NULL)
+        return;
+
+    *(unsigned int *)lock = 0;
+    OPENSSL_free(lock);
+
+    return;
+}
+
+int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
+{
+    if (*once != 0)
+        return 1;
+
+    init();
+    *once = 1;
+
+    return 1;
+}
+
+#define OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX 256
+
+static void *thread_local_storage[OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX];
+
+int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))
+{
+    static unsigned int thread_local_key = 0;
+
+    if (thread_local_key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
+        return 0;
+
+    *key = thread_local_key++;
+
+    thread_local_storage[*key] = NULL;
+
+    return 1;
+}
+
+void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
+{
+    if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
+        return NULL;
+
+    return thread_local_storage[*key];
+}
+
+int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)
+{
+    if (*key >= OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX)
+        return 0;
+
+    thread_local_storage[*key] = val;
+
+    return 1;
+}
+
+int CRYPTO_THREAD_cleanup_local(CRYPTO_THREAD_LOCAL *key)
+{
+    *key = OPENSSL_CRYPTO_THREAD_LOCAL_KEY_MAX + 1;
+    return 1;
+}
+
+CRYPTO_THREAD_ID CRYPTO_THREAD_get_current_id(void)
+{
+    return 0;
+}
+
+int CRYPTO_THREAD_compare_id(CRYPTO_THREAD_ID a, CRYPTO_THREAD_ID b)
+{
+    return (a == b);
+}
+
+int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock)
+{
+    *val += amount;
+    *ret  = *val;
+
+    return 1;
+}
+
+#endif