nxcomp/src/Log.cpp: add PID to thread ID output if requested.

The default function we use (if a thread name is not specified explicitly) is pthread_self(). This function returns a number that is guaranteed to be unique for each thread within a process, but this assertion doesn't hold globally. Hence only using the thread ID is ambiguous when logging from multiple processes.

nxcomp/src/Log.cpp: add PID to thread ID output if requested.
6c3cf54b · Mihai Moldovan · 1829a35c · 6c3cf54b
Commit 6c3cf54b authored Oct 27, 2017 by Mihai Moldovan
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Log.cpp nxcomp/src/Log.cpp +2 -1

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--- a/nxcomp/src/Log.cpp
+++ b/nxcomp/src/Log.cpp
@@ -29,6 +29,7 @@
 #include <fstream>
 #include <sstream>
 #include <iomanip>
+#include <unistd.h>

 #include "Log.h"
 #include "config.h"
@@ -95,7 +96,7 @@ std::string NXLog::stamp_to_string(const NXLogStamp& stamp) const
    if ( log_thread_id() )
    {
        if ( thread_name().empty() )
-            oss << pthread_self() << " ";
+            oss << getpid() << "/" << pthread_self() << " ";
        else
            oss << "[" << thread_name() << "] ";
    }