provide an output stream for simulator output. (This takes place of the

statStream catchall that we had before)
Also provide an optional output directory that multiple simulator output
files can be written to.
Make most output files use the output directory

base/misc.cc:
    send warnings to the outputStream as well
base/trace.cc:
    dprintf_stream defaults to cerr
dev/console.cc:
    use the output directory for the console output if it exists
dev/etherdump.cc:
    dump to the output directory if it exists
sim/builder.cc:
sim/builder.hh:
    move constructor and destructor to .cc file
    use a function to get the stream that the builder dumps its
    output to, and create a separate file in the output directory
    if able
sim/main.cc:
    statStream -> outputStream
sim/serialize.cc:
    dump checkpoints to the output directory if specified
sim/universe.cc:
    provide an output stream for simulator output.  (This takes place of the
    statStream catchall that we had before)
    Also provide an optional output directory that multiple simulator output
    files can be written to.

--HG--
extra : convert_revision : 03abce20edbbf7ec19c9ddd8d69ec8485c383532

1 files changed, 56 insertions, 0 deletions

diff --git a/sim/universe.cc b/sim/universe.cc
index b75b1f78a..440c6363f 100644
--- a/sim/universe.cc
+++ b/sim/universe.cc
@@ -26,10 +26,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <cstring>
+#include <fstream>
 #include <list>
 #include <string>
 #include <vector>
 
+#include "base/files.hh"
+#include "base/misc.hh"
 #include "sim/universe.hh"
 #include "sim/host.hh"
 #include "sim/param.hh"
@@ -42,8 +49,14 @@ double __ticksPerMS;
 double __ticksPerUS;
 double __ticksPerNS;
 
+string outputDirectory;
+ostream *outputStream;
+
 class UniverseParamContext : public ParamContext
 {
+  private:
+    ofstream outputFile;
+
   public:
     UniverseParamContext(const string &is) : ParamContext(is) {}
     void checkParams();
@@ -54,6 +67,11 @@ UniverseParamContext universe("Universe");
 Param<Tick> universe_freq(&universe, "frequency", "tick frequency",
                           200000000);
 
+Param<string> universe_output_dir(&universe, "output_dir",
+                                  "directory to output data to");
+Param<string> universe_output_file(&universe, "output_file",
+                                   "file to dump simulator output to");
+
 void
 UniverseParamContext::checkParams()
 {
@@ -62,4 +80,42 @@ UniverseParamContext::checkParams()
     __ticksPerMS = freq / 1.0e3;
     __ticksPerUS = freq / 1.0e6;
     __ticksPerNS = freq / 1.0e9;
+
+    if (universe_output_dir.isValid()) {
+        outputDirectory = universe_output_dir;
+
+        // guarantee that directory ends with a '/'
+        if (outputDirectory[outputDirectory.size() - 1] != '/')
+            outputDirectory += "/";
+
+        if (mkdir(outputDirectory.c_str(), 0777) < 0) {
+            if (errno != EEXIST) {
+                panic("%s\ncould not make output directory: %s\n",
+                      strerror(errno), outputDirectory);
+            }
+        }
+    }
+
+    string filename;
+    if (universe_output_file.isValid()) {
+        string f = universe_output_file;
+        if (f != "stdout" && f != "cout" && f != "stderr" && f != "cerr")
+            filename = outputDirectory + f;
+        else
+            filename = f;
+    } else {
+        if (outputDirectory.empty())
+            filename = "stdout";
+        else
+            filename = outputDirectory + "output.txt";
+    }
+
+    if (filename == "stdout" || filename == "cout")
+        outputStream = &cout;
+    else if (filename == "stderr" || filename == "cerr")
+        outputStream = &cerr;
+    else {
+        outputFile.open(filename.c_str(), ios::trunc);
+        outputStream = &outputFile;
+    }
 }