Update docs with glog and some fix with the prev commit

Change-Id: Iea7faf7703180510cd62b1f38fb7d0b6afc260eb

docs/cn/getting_started.md

@@ -89,6 +89,10 @@ If you want to use [cpu profiler](cpu_profiler.md) or [heap profiler](heap_profi
 
 When you remove tcmalloc, not only remove the linking with tcmalloc but also the macros: `-DBRPC_ENABLE_CPU_PROFILER` and `-DBRPC_ENABLE_HEAP_PROFILER`.
 
+## glog: 3.3+
+
+brpc implementes a default [logging utility](../../src/butil/logging.h) which conflicts with glog. To replace this with glog, add *--with-glog* to config_brpc.sh
+
 ## valgrind: 3.8+
 
 brpc detects valgrind automatically (and registers stacks of bthread). Older valgrind (say 3.2) is not supported.

src/butil/debug/leak_tracker.h

@@ -93,8 +93,10 @@ class LeakTracker : public LinkNode<LeakTracker<T> > {
         stacktraces[count] = allocation_stack;
 
       ++count;
-        LOG(ERROR) << "Leaked " << node << " which was allocated by:";
-        //allocation_stack.OutputToStream(&LOG_STREAM(ERROR));
+      std::ostringstream err;
+      err << "Leaked " << node << " which was allocated by:";
+      allocation_stack.OutputToStream(&err);
+      LOG(ERROR) << err.str();
     }
 
     CHECK_EQ(0u, count);

src/butil/debug/proc_maps_linux.cc

@@ -103,7 +103,7 @@ bool ParseProcMaps(const std::string& input,
     // Due to splitting on '\n' the last line should be empty.
     if (i == lines.size() - 1) {
       if (!lines[i].empty()) {
-        DPLOG(WARNING) << "Last line not empty";
+        DLOG(WARNING) << "Last line not empty";
         return false;
       }
       break;