1 files changed, 74 insertions, 0 deletions
diff --git a/src/mem.c b/src/mem.c
new file mode 100644
index 0000000..8728247
--- /dev/null
+++ b/src/mem.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright © 2020, VideoLAN and dav1d authors
+ * Copyright © 2020, Two Orioles, LLC
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER 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.
+ */
+
+#include "config.h"
+
+#include <stdint.h>
+
+#include "src/mem.h"
+#include "src/thread.h"
+
+void dav1d_mem_pool_push(Dav1dMemPool *const pool, Dav1dMemPoolBuffer *const buf) {
+    pthread_mutex_lock(&pool->lock);
+    buf->next = pool->buf;
+    pool->buf = buf;
+    pthread_mutex_unlock(&pool->lock);
+}
+
+Dav1dMemPoolBuffer *dav1d_mem_pool_pop(Dav1dMemPool *const pool, const size_t size) {
+    pthread_mutex_lock(&pool->lock);
+    Dav1dMemPoolBuffer *buf = pool->buf;
+    uint8_t *data;
+    if (buf) {
+        pool->buf = buf->next;
+        pthread_mutex_unlock(&pool->lock);
+        data = buf->data;
+        if ((uintptr_t)buf - (uintptr_t)data != size) {
+            dav1d_free_aligned(data);
+            goto alloc;
+        }
+    } else {
+        pthread_mutex_unlock(&pool->lock);
+alloc:
+        data = dav1d_alloc_aligned(size + sizeof(Dav1dMemPoolBuffer), 64);
+        if (!data) return NULL;
+        buf = (Dav1dMemPoolBuffer*)(data + size);
+        buf->data = data;
+    }
+
+    return buf;
+}
+
+COLD void dav1d_mem_pool_destroy(Dav1dMemPool *const pool) {
+    pthread_mutex_destroy(&pool->lock);
+    Dav1dMemPoolBuffer *buf = pool->buf;
+    while (buf) {
+        void *const data = buf->data;
+        buf = buf->next;
+        dav1d_free_aligned(data);
+    }
+}