1 files changed, 99 insertions, 0 deletions
diff --git a/third_party/dav1d/src/win32/thread.c b/third_party/dav1d/src/win32/thread.c
new file mode 100644
index 0000000000..b89bd6b165
--- /dev/null
+++ b/third_party/dav1d/src/win32/thread.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright © 2018-2021, VideoLAN and dav1d authors
+ * Copyright © 2018, 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"
+
+#if defined(_WIN32)
+
+#include <process.h>
+#include <stdlib.h>
+#include <windows.h>
+
+#include "common/attributes.h"
+
+#include "src/thread.h"
+
+static HRESULT (WINAPI *set_thread_description)(HANDLE, PCWSTR);
+
+COLD void dav1d_init_thread(void) {
+#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+    HANDLE kernel32 = GetModuleHandleW(L"kernel32.dll");
+    if (kernel32)
+        set_thread_description =
+            (void*)GetProcAddress(kernel32, "SetThreadDescription");
+#endif
+}
+
+#undef dav1d_set_thread_name
+COLD void dav1d_set_thread_name(const wchar_t *const name) {
+    if (set_thread_description) /* Only available since Windows 10 1607 */
+        set_thread_description(GetCurrentThread(), name);
+}
+
+static COLD unsigned __stdcall thread_entrypoint(void *const data) {
+    pthread_t *const t = data;
+    t->arg = t->func(t->arg);
+    return 0;
+}
+
+COLD int dav1d_pthread_create(pthread_t *const thread,
+                              const pthread_attr_t *const attr,
+                              void *(*const func)(void*), void *const arg)
+{
+    const unsigned stack_size = attr ? attr->stack_size : 0;
+    thread->func = func;
+    thread->arg = arg;
+    thread->h = (HANDLE)_beginthreadex(NULL, stack_size, thread_entrypoint, thread,
+                                       STACK_SIZE_PARAM_IS_A_RESERVATION, NULL);
+    return !thread->h;
+}
+
+COLD int dav1d_pthread_join(pthread_t *const thread, void **const res) {
+    if (WaitForSingleObject(thread->h, INFINITE))
+        return 1;
+
+    if (res)
+        *res = thread->arg;
+
+    return !CloseHandle(thread->h);
+}
+
+COLD int dav1d_pthread_once(pthread_once_t *const once_control,
+                            void (*const init_routine)(void))
+{
+    BOOL pending = FALSE;
+
+    if (InitOnceBeginInitialize(once_control, 0, &pending, NULL) != TRUE)
+        return 1;
+
+    if (pending == TRUE)
+        init_routine();
+
+    return !InitOnceComplete(once_control, 0, NULL);
+}
+
+#endif