Initial in-process implementation of some Mojo primitives.

mojo/system/limits.h

Index: mojo/system/limits.h
diff --git a/mojo/system/limits.h b/mojo/system/limits.h
new file mode 100644
index 0000000000000000000000000000000000000000..e91bcb7f6a787acaf6c88394ddd891caab189bc4
--- /dev/null
+++ b/mojo/system/limits.h
@@ -0,0 +1,25 @@
+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_SYSTEM_LIMITS_H_
+#define MOJO_SYSTEM_LIMITS_H_
+
+namespace mojo {
+namespace system {
+
+// Maximum of open (Mojo) handles.
+// TODO(vtl): This doesn't count "live" handles, some of which may live in
+// messages.
+const size_t kMaxHandleTableSize = 1000000;
+
+const size_t kMaxWaitManyNumHandles = 256;

[darin (slow to review), 2013/09/27 15:34:47]

I'm certain this number needs to be *much* larger. We want to allow clients to
create as many handles as they want. They shouldn't be limited on how many
handles they can wait on from any given thread.

Perhaps kMaxWaitManyNumHandles should just be set to kMaxHandleTableSize.

[viettrungluu, 2013/09/27 17:58:01]

Done.

+
+const size_t kMaxMessageNumBytes = 4 * 1024 * 1024;
+
+const size_t kMaxMessageNumHandles = 256;
+
+}  // namespace system
+}  // namespace mojo
+
+#endif  // MOJO_SYSTEM_LIMITS_H_