From 921b1ee87b6927e7310c747e03efd223d8c65642 Mon Sep 17 00:00:00 2001
From: Lisa Hsu <hsul@eecs.umich.edu>
Date: Tue, 4 Nov 2003 15:15:12 -0500
Subject: Add the ability to track stats in user defined sets of function
 calls.  code can be generated via the base/instrum_codegen.pl script to
 easily change the functions being tracked.  the only thing the user needs to
 do is add code in tru64System to change how the callerMap is populated.

command line:

m5.* <config file> <args> --server.system:bin=true to track function calls in the server
m5.* <config file> <args> --client.system:bin=true to track function calls in the client

base/statistics.cc:
    make an adjustment to the way stats are printed for FS_MEASURE
base/statistics.hh:
    add a name() virtual function to GenBin.  add a debug printf for activate().
    add amake MainBin the default bin when FS_MEASURE.
cpu/exec_context.cc:
    initialize swCtx to null upon creation of an xc
cpu/exec_context.hh:
    add a SWContext pointer to every execution context.
cpu/simple_cpu/simple_cpu.cc:
    process calls and returns for FS_MEASURE
cpu/simple_cpu/simple_cpu.hh:
    add this so idleCycles will not be accessed before all stats are constructed
kern/tru64/tru64_events.cc:
    add a FnEvent that fires whenever a function we're tracking is called.  implement the process() virtual function for it.
kern/tru64/tru64_events.hh:
    add FnEvent
kern/tru64/tru64_system.cc:
    send bin parameter to System constructor.  add bin parameter to Tru64System object.  initialize all the FnEvent and MainBin members of Tru64system.  also, populate the calling map that indicates whether a function call is on the path we're tracking.
kern/tru64/tru64_system.hh:
    modify the Tru64System class to support FS_MEASURE
sim/system.cc:
    add a bin parameter to System class.  initialize a MainBin to hold the stats for nonPath.
sim/system.hh:
    add a map of to match bins to function names.  add a swCtx map to map pcb addresses to SWContext *s.  Add some supporting functions.

--HG--
extra : convert_revision : af3eadd798cb2d2aed9b54e1059dcedf244dd526
---
 sim/system.cc | 38 ++++++++++++++++++++++++++++++++++++--
 sim/system.hh | 34 +++++++++++++++++++++++++++++++++-
 2 files changed, 69 insertions(+), 3 deletions(-)

(limited to 'sim')

diff --git a/sim/system.cc b/sim/system.cc
index af4a4c151..58e290d1a 100644
--- a/sim/system.cc
+++ b/sim/system.cc
@@ -40,14 +40,23 @@ int System::numSystemsRunning = 0;
 System::System(const std::string _name,
                const uint64_t _init_param,
                MemoryController *_memCtrl,
-               PhysicalMemory *_physmem)
+               PhysicalMemory *_physmem,
+               const bool _bin)
     : SimObject(_name),
       init_param(_init_param),
       memCtrl(_memCtrl),
-      physmem(_physmem)
+      physmem(_physmem),
+      bin(_bin)
 {
     // add self to global system list
     systemList.push_back(this);
+#ifdef FS_MEASURE
+    if (bin == true) {
+        nonPath = new Statistics::MainBin("non TCPIP path stats");
+        nonPath->activate();
+    } else
+        nonPath = NULL;
+#endif
 }
 
 
@@ -95,5 +104,30 @@ printSystems()
     System::printSystems();
 }
 
+#ifdef FS_MEASURE
+Statistics::GenBin *
+System::getBin(const std::string &name)
+{
+    std::map<const std::string, Statistics::GenBin *>::const_iterator i;
+    i = fnBins.find(name);
+    if (i == fnBins.end())
+        panic("trying to getBin that is not on system map!");
+    return (*i).second;
+}
+
+SWContext *
+System::findContext(Addr pcb)
+{
+  std::map<Addr, SWContext *>::const_iterator iter;
+  iter = swCtxMap.find(pcb);
+  if (iter != swCtxMap.end()) {
+      SWContext *ctx = (*iter).second;
+      assert(ctx != NULL && "should never have a null ctx in ctxMap");
+      return ctx;
+  } else
+      return NULL;
+}
+#endif //FS_MEASURE
+
 DEFINE_SIM_OBJECT_CLASS_NAME("System", System)
 
diff --git a/sim/system.hh b/sim/system.hh
index 081aa3eb7..741dea0db 100644
--- a/sim/system.hh
+++ b/sim/system.hh
@@ -36,6 +36,11 @@
 #include "cpu/pc_event.hh"
 #include "base/loader/symtab.hh"
 
+#ifdef FS_MEASURE
+#include "base/statistics.hh"
+#include "sim/sw_context.hh"
+#endif
+
 class MemoryController;
 class PhysicalMemory;
 class RemoteGDB;
@@ -45,10 +50,17 @@ class ExecContext;
 
 class System : public SimObject
 {
+#ifdef FS_MEASURE
+  protected:
+    std::map<const std::string, Statistics::GenBin *> fnBins;
+    std::map<const Addr, SWContext *> swCtxMap;
+#endif //FS_MEASURE
+
   public:
     const uint64_t init_param;
     MemoryController *memCtrl;
     PhysicalMemory *physmem;
+    bool bin;
 
     PCEventQueue pcEventQueue;
 
@@ -57,9 +69,14 @@ class System : public SimObject
     virtual int registerExecContext(ExecContext *xc);
     virtual void replaceExecContext(int xcIndex, ExecContext *xc);
 
+#ifdef FS_MEASURE
+    Statistics::Scalar<Counter, Statistics::MainBin> fnCalls;
+    Statistics::MainBin *nonPath;
+#endif //FS_MEASURE
+
   public:
     System(const std::string _name, const uint64_t _init_param,
-           MemoryController *, PhysicalMemory *);
+           MemoryController *, PhysicalMemory *, const bool);
     ~System();
 
     virtual Addr getKernelStart() const = 0;
@@ -67,6 +84,21 @@ class System : public SimObject
     virtual Addr getKernelEntry() const = 0;
     virtual bool breakpoint() = 0;
 
+#ifdef FS_MEASURE
+    Statistics::GenBin * getBin(const std::string &name);
+    virtual bool findCaller(std::string, std::string) const = 0;
+
+    SWContext *findContext(Addr pcb);
+    bool addContext(Addr pcb, SWContext *ctx) {
+        return (swCtxMap.insert(make_pair(pcb, ctx))).second;
+    }
+    void remContext(Addr pcb) {
+        swCtxMap.erase(pcb);
+        return;
+    }
+
+    virtual void dumpState(ExecContext *xc) const = 0;
+#endif //FS_MEASURE
 
   public:
     ////////////////////////////////////////////
-- 
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