Initial checkin of gRPC to third_party/

third_party/grpc/src/core/support/thd_win32.c

Index: third_party/grpc/src/core/support/thd_win32.c
diff --git a/third_party/grpc/src/core/support/thd_win32.c b/third_party/grpc/src/core/support/thd_win32.c
new file mode 100644
index 0000000000000000000000000000000000000000..a9db180c1b057490da6dc366ab439ad33df214f2
--- /dev/null
+++ b/third_party/grpc/src/core/support/thd_win32.c
@@ -0,0 +1,117 @@
+/*
+ *
+ * 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
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * 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
+ * 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.
+ *
+ */
+
+/* Windows implementation for gpr threads. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WIN32
+
+#include <string.h>
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/thd.h>
+
+#if defined(_MSC_VER)
+#define thread_local __declspec(thread)
+#elif defined(__GNUC__)
+#define thread_local __thread
+#else
+#error "Unknown compiler - please file a bug report"
+#endif
+
+struct thd_info {
+  void (*body)(void *arg); /* body of a thread */
+  void *arg;               /* argument to a thread */
+  HANDLE join_event;       /* if joinable, the join event */
+  int joinable;            /* true if not detached */
+};
+
+static thread_local struct thd_info *g_thd_info;
+
+/* Destroys a thread info */
+static void destroy_thread(struct thd_info *t) {
+  if (t->joinable) CloseHandle(t->join_event);
+  gpr_free(t);
+}
+
+/* Body of every thread started via gpr_thd_new. */
+static DWORD WINAPI thread_body(void *v) {
+  g_thd_info = (struct thd_info *)v;
+  g_thd_info->body(g_thd_info->arg);
+  if (g_thd_info->joinable) {
+    BOOL ret = SetEvent(g_thd_info->join_event);
+    GPR_ASSERT(ret);
+  } else {
+    destroy_thread(g_thd_info);
+  }
+  return 0;
+}
+
+int gpr_thd_new(gpr_thd_id *t, void (*thd_body)(void *arg), void *arg,
+                const gpr_thd_options *options) {
+  HANDLE handle;
+  struct thd_info *info = gpr_malloc(sizeof(*info));
+  info->body = thd_body;
+  info->arg = arg;
+  *t = 0;
+  if (gpr_thd_options_is_joinable(options)) {
+    info->joinable = 1;
+    info->join_event = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (info->join_event == NULL) {
+      gpr_free(info);
+      return 0;
+    }
+  } else {
+    info->joinable = 0;
+  }
+  handle = CreateThread(NULL, 64 * 1024, thread_body, info, 0, NULL);
+  if (handle == NULL) {
+    destroy_thread(info);
+  } else {
+    *t = (gpr_thd_id)info;
+    CloseHandle(handle);
+  }
+  return handle != NULL;
+}
+
+gpr_thd_id gpr_thd_currentid(void) { return (gpr_thd_id)g_thd_info; }
+
+void gpr_thd_join(gpr_thd_id t) {
+  struct thd_info *info = (struct thd_info *)t;
+  DWORD ret = WaitForSingleObject(info->join_event, INFINITE);
+  GPR_ASSERT(ret == WAIT_OBJECT_0);
+  destroy_thread(info);
+}
+
+#endif /* GPR_WIN32 */