Convert Log class to llvm streams

Summary:
This converts LLDB's logging to use llvm streams instead of
lldb_private::Stream and friends. The changes are mostly
straight-forward and amount to s/lldb_private::Stream/llvm::raw_ostream.

The part worth calling out is the rewrite of the StreamCallback class.
Previously this class contained a per-thread buffer of data written. I
assume this had something to do with it trying to make sure each log
line is delivered as a single event, instead of multiple (possibly
interleaved) events. However, this is no longer relevant as the Log
class already writes things to a temporary buffer and then delivers the
message as a single "write", so I have just removed the code in
question.

Reviewers: zturner, clayborg

Subscribers: emaste, lldb-commits, mgorny

Differential Revision: https://reviews.llvm.org/D29615

llvm-svn: 294736

1 files changed, 28 insertions, 0 deletions

diff --git a/lldb/unittests/Core/StreamCallbackTest.cpp b/lldb/unittests/Core/StreamCallbackTest.cpp
new file mode 100644
index 00000000000..4ef14aaeb54
--- /dev/null
+++ b/lldb/unittests/Core/StreamCallbackTest.cpp
@@ -0,0 +1,28 @@
+//===-- StreamCallbackTest.cpp ----------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Core/StreamCallback.h"
+#include "gtest/gtest.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+static char test_baton;
+static size_t callback_count = 0;
+static void TestCallback(const char *data, void *baton) {
+  EXPECT_STREQ("Foobar", data);
+  EXPECT_EQ(&test_baton, baton);
+  ++callback_count;
+}
+
+TEST(StreamCallbackTest, Callback) {
+  StreamCallback stream(TestCallback, &test_baton);
+  stream << "Foobar";
+  EXPECT_EQ(1u, callback_count);
+}