1 files changed, 105 insertions, 0 deletions
diff --git a/src/core/lib/gpr/thd_windows.cc b/src/core/lib/gpr/thd_windows.cc
new file mode 100644
index 0000000000..f920770f32
--- /dev/null
+++ b/src/core/lib/gpr/thd_windows.cc
@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* Windows implementation for gpr threads. */
+
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_WINDOWS
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include <grpc/support/thd.h>
+#include <string.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);
+}
+
+void gpr_thd_init(void) {}
+
+/* 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, const char* thd_name,
+                void (*thd_body)(void* arg), void* arg,
+                const gpr_thd_options* options) {
+  HANDLE handle;
+  struct thd_info* info = (struct thd_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_WINDOWS */