SERVER-10084 New logging implementation.

This change-set:

* Introduces a new top-level directory, mongo/logger, containing most of the implementation of logging functionality formerly found in log.cpp/log.h.

* Cleans up existing, unusual uses of the logging system that were not trivially compatible with the new implementation.

* Replaces Logstream/Nulstream with a LogstreamBuilder object, whose destructor writes log messages.  This new LogstreamBuilder is reentrant, unlike the old logging code, which was thread-safe but not reentrant.  Additionally, std::endl is no longer required to terminate a log line.  When a LogstreamBuilder goes out of scope, the log message gets committed.

* Separates the log system into several components: a global LogManager, several LogDomains, various kinds of Appenders (e.g., SyslogAppender) and Encoders (for formatting messages).

* Allows unit tests to capture and examine log output.

This patch does _not_ introduce support for hierarchical log domains, or for enabling and disabling specific log domains when the server is running in a multi-threaded mode.  This is future work.

1 files changed, 0 insertions, 1 deletions

diff --git a/src/mongo/unittest/crutch.cpp b/src/mongo/unittest/crutch.cpp
index bae6f6a30a9..232086527b2 100644
--- a/src/mongo/unittest/crutch.cpp
+++ b/src/mongo/unittest/crutch.cpp
@@ -32,7 +32,6 @@ namespace mongo {
     StartupTest::StartupTest() {}
     StartupTest::~StartupTest() {}
     bool inShutdown() { return false; }
-    std::string getThreadName() { return "UNKNOWN"; }
     void setLastError(int code, const char* msg) {}
     bool StaticObserver::_destroyingStatics = false;
 }  // namespace mongo