Added MojoNewWait and MojoNewWaitMany, along with unit tests.

mojo/public/c/system/tests/core_unittest_pure_c.c

Index: mojo/public/c/system/tests/core_unittest_pure_c.c
diff --git a/mojo/public/c/system/tests/core_unittest_pure_c.c b/mojo/public/c/system/tests/core_unittest_pure_c.c
index 33de6883f9654b3e5fb59863a826d7acb83d8fea..2dbf4dfe1d610b8e39a0ee5605266fac8fb68613 100644
--- a/mojo/public/c/system/tests/core_unittest_pure_c.c
+++ b/mojo/public/c/system/tests/core_unittest_pure_c.c
@@ -61,8 +61,15 @@ const char* MinimalCTest(void) {
   EXPECT_EQ(MOJO_RESULT_OK, MojoCreateMessagePipe(NULL, &handle0, &handle1));
 
   signals = MOJO_HANDLE_SIGNAL_READABLE;
+  uint32_t result_index;

[viettrungluu, 2014/12/02 23:57:34]

"

+  struct MojoHandleSignalsState states[1];
   EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED,
-            MojoWaitMany(&handle0, &signals, 1, 1));
+            MojoNewWaitMany(&handle0, &signals, 1, 1, &result_index, states));
+
+  EXPECT_EQ(0u, result_index);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, states[0].satisfied_signals);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE,
+            states[0].satisfiable_signals);
 
   EXPECT_EQ(MOJO_RESULT_OK,
             MojoWriteMessage(handle0,
@@ -72,9 +79,16 @@ const char* MinimalCTest(void) {
                              0u,
                              MOJO_WRITE_DATA_FLAG_NONE));
 
+  struct MojoHandleSignalsState state;
   EXPECT_EQ(
       MOJO_RESULT_OK,
-      MojoWait(handle1, MOJO_HANDLE_SIGNAL_READABLE, MOJO_DEADLINE_INDEFINITE));
+      MojoNewWait(handle1, MOJO_HANDLE_SIGNAL_READABLE,
+                  MOJO_DEADLINE_INDEFINITE, &state));
+
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE,
+            state.satisfied_signals);
+  EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE,
+            state.satisfiable_signals);
 
   num_bytes = (uint32_t)sizeof(buffer);
   EXPECT_EQ(MOJO_RESULT_OK,