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FastAlloc: track allocation tick in debug mode,

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minor enhancements to debug output
This commit is contained in:
Steve Reinhardt 2009-01-08 14:13:33 -08:00
parent fff9c93568
commit c370a9cb98
2 changed files with 55 additions and 10 deletions
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57
src/base/fast_alloc.cc
View file

@ -75,12 +75,13 @@ FastAlloc::moreStructs(int bucket)
#if FAST_ALLOC_DEBUG
#include <iomanip>
#include <iostream>
#include <map>
#include <string>
#include <typeinfo>
#include "base/cprintf.hh"
#include "sim/core.hh" // for curTick
using namespace std;
// count of in-use FastAlloc objects
@ -103,6 +104,7 @@ FastAlloc::FastAlloc()
{
// mark this object in use
inUse = true;
whenAllocated = curTick;
// update count
++numInUse;
@ -131,6 +133,13 @@ FastAlloc::~FastAlloc()
inUseNext->inUsePrev = inUsePrev;
}
// Note that in all the display functions below we suppress anything
// with a zero allocation timestamp... there are a bunch of static or
// quasi-static structures that get allocated during initialization
// and we generally don't care about them so this gets them out of the
// way.
// summarize in-use list
void
FastAlloc::dump_summary()
@ -139,17 +148,19 @@ FastAlloc::dump_summary()
for (FastAlloc *p = inUseHead.inUseNext; p != &inUseHead; p = p->inUseNext)
{
if (p->whenAllocated != 0)
++typemap[typeid(*p).name()];
}
map<string, int>::const_iterator mapiter;
cout << " count type\n"
<< " ----- ----\n";
cprintf(" count type\n"
" ----- ----\n");
for (mapiter = typemap.begin(); mapiter != typemap.end(); ++mapiter)
cout << setw(6) << mapiter->second << " " << mapiter->first << endl;
cprintf("%6d %s\n",mapiter->second, mapiter->first);
}
// show oldest n items on in-use list
void
FastAlloc::dump_oldest(int n)
@ -157,16 +168,44 @@ FastAlloc::dump_oldest(int n)
// sanity check: don't want to crash the debugger if you forget to
// pass in a parameter
if (n < 0 || n > numInUse) {
cout << "FastAlloc::dump_oldest: bad arg " << n
<< " (" << numInUse << " objects in use" << endl;
cprintf("FastAlloc::dump_oldest: bad arg %d (%d objects in use)\n",
n, numInUse);
return;
}
for (FastAlloc *p = inUseHead.inUseNext;
p != &inUseHead && n > 0;
p = p->inUseNext, --n)
cout << p << " " << typeid(*p).name() << endl;
p = p->inUseNext, --n) {
if (p->whenAllocated != 0)
cprintf("%x %15d %s\n", p, p->whenAllocated, typeid(*p).name());
}
}
// show oldest n items on in-use list for specified type
void
FastAlloc::dump_oldest_of_type(int n, const char *type_name)
{
// sanity check: don't want to crash the debugger if you forget to
// pass in a parameter
if (n < 0 || n > numInUse) {
cprintf("FastAlloc::dump_oldest_of_type: bad arg %d "
"(%d objects in use)\n",
n, numInUse);
return;
}
for (FastAlloc *p = inUseHead.inUseNext;
p != &inUseHead && n > 0;
p = p->inUseNext) {
if (p->whenAllocated != 0 &&
strcmp(typeid(*p).name(), type_name) == 0) {
cprintf("%x %15d\n", p, p->whenAllocated);
--n;
}
}
}
//
// C interfaces to FastAlloc::dump_summary() and FastAlloc::dump_oldest().

6
src/base/fast_alloc.hh
View file

@ -74,6 +74,10 @@ class FastAlloc
#else
#if FAST_ALLOC_DEBUG
#include "sim/host.hh" // for Tick
#endif
class FastAlloc
{
public:
@ -127,6 +131,7 @@ class FastAlloc
bool inUse; // in-use flag
FastAlloc *inUsePrev; // ptrs to build list of in-use objects
FastAlloc *inUseNext;
Tick whenAllocated;
// static (global) debugging vars
static int numInUse; // count in-use objects
@ -137,6 +142,7 @@ class FastAlloc
// versions that might be more agreeable to call from gdb)
static void dump_summary();
static void dump_oldest(int n);
static void dump_oldest_of_type(int n, const char *type_name);
#endif
};