Initial checkin of gRPC to third_party/

third_party/grpc/src/core/iomgr/wakeup_fd_posix.c

Index: third_party/grpc/src/core/iomgr/wakeup_fd_posix.c
diff --git a/third_party/tcmalloc/chromium/src/base/spinlock_win32-inl.h b/third_party/grpc/src/core/iomgr/wakeup_fd_posix.c
similarity index 59%
copy from third_party/tcmalloc/chromium/src/base/spinlock_win32-inl.h
copy to third_party/grpc/src/core/iomgr/wakeup_fd_posix.c
index 9e77311c86a0c91687704284fe37107baeb2229b..f40be081b0567807d94d2716aeeef750b38ff458 100644
--- a/third_party/tcmalloc/chromium/src/base/spinlock_win32-inl.h
+++ b/third_party/grpc/src/core/iomgr/wakeup_fd_posix.c
@@ -1,10 +1,12 @@
-/* Copyright (c) 2009, Google Inc.
+/*
+ *
+ * Copyright 2015, Google Inc.
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ -14,7 +16,7 @@
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
- * 
+ *
  * 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
@@ -27,34 +29,44 @@
  * (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 file is a Win32-specific part of spinlock_internal.cc
  */
 
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_WAKEUP_FD
 
-#include <windows.h>
+#include "src/core/iomgr/wakeup_fd_posix.h"
+#include "src/core/iomgr/wakeup_fd_pipe.h"
+#include <stddef.h>
 
-namespace base {
-namespace internal {
+static const grpc_wakeup_fd_vtable *wakeup_fd_vtable = NULL;
+int grpc_allow_specialized_wakeup_fd = 1;
 
-void SpinLockDelay(volatile Atomic32 *w, int32 value, int loop) {
-  if (loop == 0) {
-  } else if (loop == 1) {
-    Sleep(0);
+void grpc_wakeup_fd_global_init(void) {
+  if (grpc_allow_specialized_wakeup_fd &&
+      grpc_specialized_wakeup_fd_vtable.check_availability()) {
+    wakeup_fd_vtable = &grpc_specialized_wakeup_fd_vtable;
   } else {
-    // TODO(dmikurube): Re-enable the commented-out code.
-    // We commented out the following line and used the old code "Sleep(1)"
-    // since base/atomicops-internals-windows.h doesn't support 64-bit
-    // operations.
-    //
-    // Commended-out code:
-    //   Sleep(base::internal::SuggestedDelayNS(loop) / 1000000);
-    Sleep(1);
+    wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable;
   }
 }
 
-void SpinLockWake(volatile Atomic32 *w, bool all) {
+void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = NULL; }
+
+void grpc_wakeup_fd_init(grpc_wakeup_fd *fd_info) {
+  wakeup_fd_vtable->init(fd_info);
+}
+
+void grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd *fd_info) {
+  wakeup_fd_vtable->consume(fd_info);
+}
+
+void grpc_wakeup_fd_wakeup(grpc_wakeup_fd *fd_info) {
+  wakeup_fd_vtable->wakeup(fd_info);
+}
+
+void grpc_wakeup_fd_destroy(grpc_wakeup_fd *fd_info) {
+  wakeup_fd_vtable->destroy(fd_info);
 }
 
-} // namespace internal
-} // namespace base
+#endif /* GPR_POSIX_WAKEUP_FD */