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tdesdk/kmtrace/kmtrace.cpp

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#include <tqintdict.h>
#include <stdio.h>
#include <list>
#ifdef Q_OS_SOLARIS
#include <strings.h> /* index(), rindex() */
#endif
#include <tqstringlist.h>
#include <tqstrlist.h>
#include <tqtextstream.h>
#include <tqfile.h>
#include <tqtl.h>
#include <tqvaluelist.h>
#include <stdlib.h>
#include <tdetempfile.h>
#include <kinstance.h>
#include <kstandarddirs.h>
#include <tdecmdlineargs.h>
#include <kprocess.h>
extern "C" {
/* Options passed to cplus_demangle (in 2nd parameter). */
#define DMGL_NO_OPTS 0 /* For readability... */
#define DMGL_PARAMS (1 << 0) /* Include function args */
#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */
#define DMGL_JAVA (1 << 2) /* Demangle as Java rather than C++. */
#define DMGL_AUTO (1 << 8)
#define DMGL_GNU (1 << 9)
#define DMGL_LUCID (1 << 10)
#define DMGL_ARM (1 << 11)
#define DMGL_HP (1 << 12) /* For the HP aCC compiler; same as ARM
except for template arguments, etc. */
#define DMGL_EDG (1 << 13)
#define DMGL_GNU_V3 (1 << 14)
#define DMGL_GNAT (1 << 15)
extern char *cplus_demangle(const char *mangled, int options);
}
struct Entry {
int base;
int size;
int signature;
int count;
int total_size;
int backtrace[1];
bool operator==(const Entry &e) { return total_size == e.total_size; }
bool operator<(const Entry &e) { return total_size > e.total_size; }
};
TQIntDict<Entry> *entryDict = 0;
TQIntDict<char> *symbolDict = 0;
TQIntDict<char> *formatDict = 0;
std::list<Entry*> *entryList = 0;
TQStrList *excludes = 0;
const char * const unknown = "<unknown>";
const char * const excluded = "<excluded>";
int allocCount = 0;
int leakedCount = 0;
int count = 0;
int maxCount;
int totalBytesAlloced = 0;
int totalBytesLeaked = 0;
int totalBytes = 0;
int maxBytes;
int fromHex(const char *str);
void parseLine(const TQCString &_line, char operation);
void dumpBlocks();
int fromHex(const char *str)
{
if (*str == '[') str++;
str += 2; // SKip "0x"
return strtoll(str, NULL, 16);
}
// [address0][address1] .... [address] + base size
void parseLine(const TQCString &_line, char operation)
{
char *line= (char *) _line.data();
const char *cols[200];
int i = 0;
cols[i++] = line;
while(*line)
{
if (*line == ' ')
{
*line = 0;
line++;
while (*line && (*line==' ')) line++;
if (*line) cols[i++] = line;
}
else line++;
}
int cols_count = i;
if (cols_count > 199) fprintf(stderr, "Error cols_count = %d\n", cols_count);
if (cols_count < 4) return;
switch (operation)
{
case '+':
{
Entry *entry = (Entry *) malloc((cols_count+3) *sizeof(int));
entry->base = fromHex(cols[cols_count-2]);
entry->size = fromHex(cols[cols_count-1]);
int signature = 0;
for(int i = cols_count-3; i--;)
{
signature += (entry->backtrace[i-1] = fromHex(cols[i]));
}
entry->signature = (signature / 4)+cols_count;
entry->count = 1;
entry->total_size = entry->size;
entry->backtrace[cols_count-4] = 0;
totalBytesAlloced += entry->size;
totalBytes += entry->size;
count++;
if (totalBytes > maxBytes)
maxBytes = totalBytes;
if (count > maxCount)
maxCount = count;
if (entryDict->find(entry->base))
fprintf(stderr, "\rAllocated twice: 0x%08x \n", entry->base);
entryDict->replace(entry->base, entry);
} break;
case '-':
{
int base = fromHex(cols[cols_count-1]);
Entry *entry = entryDict->take(base);
if (!entry)
{
if (base)
fprintf(stderr, "\rFreeing unalloacted memory: 0x%08x \n", base);
}
else
{
totalBytes -= entry->size;
count--;
free(entry);
}
} break;
default:
break;
}
}
void sortBlocks()
{
TQIntDictIterator<Entry> it(*entryDict);
for(;it.current(); ++it)
{
Entry *entry = it.current();
totalBytesLeaked += entry->total_size;
entryList->push_back(entry);
for(int i = 0; entry->backtrace[i]; i++)
{
if (!symbolDict->find(entry->backtrace[i]))
symbolDict->insert(entry->backtrace[i], unknown);
}
}
entryList->sort([](Entry *a, Entry *b) { return *a < *b; });
}
void collectDupes()
{
TQIntDict<Entry> dupeDict;
TQIntDictIterator<Entry> it(*entryDict);
for(;it.current();)
{
Entry *entry = it.current();
++it;
Entry *entry2 = dupeDict.find(entry->signature);
if (entry2)
{
entry2->count++;
entry2->total_size += entry->size;
entryDict->remove(entry->base);
}
else
{
dupeDict.insert(entry->signature, entry);
}
}
}
int lookupSymbols(FILE *stream)
{
int i = 0;
int symbols = 0;
char line2[1024];
while(!feof(stream))
{
fgets(line2, 1023, stream);
if (line2[0] == '=' )
{
if(strcmp(line2,"= End") == 0 )
break;
}
else if (line2[0] == '#')
;
else if (line2[0] == '@')
;
else if (line2[0] == '[')
;
else if (line2[0] == '-')
;
else if (line2[0] == '<')
;
else if (line2[0] == '>')
;
else if (line2[0] == '+')
{
i++;
if (i & 1024)
{
fprintf(stderr, "\rLooking up symbols: %d found %d of %d symbols", i, symbols, symbolDict->count());
}
}
else
{
char *addr = index(line2, '[');
if (addr)
{
long i_addr = fromHex(addr);
const char* str = symbolDict->find(i_addr);
if (str == unknown)
{
*addr = 0;
char* str;
if( rindex(line2, '/') != NULL )
str = tqstrdup(rindex(line2, '/')+1);
else
str = tqstrdup(line2);
symbolDict->replace(i_addr, str);
symbols++;
}
}
}
}
fprintf(stderr, "\rLooking up symbols: %d found %d of %d symbols\n", i, symbols, symbolDict->count());
return symbolDict->count()-symbols;
}
void lookupUnknownSymbols(const char *appname)
{
KTempFile inputFile;
KTempFile outputFile;
inputFile.setAutoDelete(true);
outputFile.setAutoDelete(true);
FILE *fInputFile = inputFile.fstream();
TQIntDict<char> oldDict = *symbolDict;
TQIntDictIterator<char> it(oldDict);
for(;it.current(); ++it)
{
fprintf(fInputFile, "%08lx\n", it.currentKey());
}
inputFile.close();
TQCString command;
command.sprintf("addr2line -e %s -f -C -s < %s > %s", appname,
TQFile::encodeName(TDEProcess::quote(inputFile.name())).data(),
TQFile::encodeName(TDEProcess::quote(outputFile.name())).data());
system(command.data());
fInputFile = fopen(TQFile::encodeName(outputFile.name()), "r");
if (!fInputFile)
{
fprintf(stderr, "Error opening temp file.\n");
return;
}
TQIntDictIterator<char> it2(oldDict);
char buffer1[1024];
char buffer2[1024];
for(;it2.current(); ++it2)
{
if (feof(fInputFile))
{
fprintf(stderr, "Premature end of symbol output.\n");
fclose(fInputFile);
return;
}
if (!fgets(buffer1, 1023, fInputFile)) continue;
if (!fgets(buffer2, 1023, fInputFile)) continue;
buffer1[strlen(buffer1)-1]=0;
buffer2[strlen(buffer2)-1]=0;
TQCString symbol;
symbol.sprintf("%s(%s)", buffer2, buffer1);
if(*buffer1 != '?')
symbolDict->replace(it2.currentKey(),tqstrdup(symbol.data()));
}
fclose(fInputFile);
}
int match(const char *s1, const char *s2)
{
int result;
while(true)
{
result = *s1 - *s2;
if (result)
return result;
s1++;
s2++;
if (!*s2) return 0;
if (!*s1) return -1;
}
return 0;
}
const char *lookupAddress(int addr)
{
char *str = formatDict->find(addr);
if (str) return str;
TQCString s = symbolDict->find(addr);
if (s.isEmpty())
{
fprintf(stderr, "Error!\n");
exit(1);
}
else
{
int start = s.find('(');
int end = s.findRev('+');
if (end < 0)
end = s.findRev(')');
if ((start > 0) && (end > start))
{
TQCString symbol = s.mid(start+1, end-start-1);
char *res = 0;
if (symbol.find(')') == -1)
res = cplus_demangle(symbol.data(), DMGL_PARAMS | DMGL_AUTO | DMGL_ANSI );
if (res)
{
symbol = res;
free(res);
}
res = (char *) symbol.data();
for(const char *it = excludes->first();it;it = excludes->next())
{
int i = match(res, it);
if (i == 0)
{
formatDict->insert(addr,excluded);
return excluded;
}
}
s.replace(start+1, end-start-1, symbol);
}
}
str = tqstrdup(s.data());
formatDict->insert(addr,str);
return str;
}
void dumpBlocks()
{
int filterBytes = 0;
int filterCount = 0;
for (Entry *entry : *entryList)
{
for(int i = 0; entry->backtrace[i]; i++)
{
const char *str = lookupAddress(entry->backtrace[i]);
if (str == excluded)
{
entry->total_size = 0;
continue;
}
}
if (!entry->total_size) continue;
filterBytes += entry->total_size;
filterCount++;
}
printf("Leaked memory after filtering: %d bytes in %d blocks.\n", filterBytes, filterCount);
for (Entry *entry : *entryList)
{
if (!entry->total_size) continue;
printf("[%d bytes in %d blocks, 1st. block is %d bytes at 0x%08x] ", entry->total_size, entry->count, entry->size, entry->base);
printf("\n");
for(int i = 0; entry->backtrace[i]; i++)
{
const char *str = lookupAddress(entry->backtrace[i]);
printf(" 0x%08x %s\n", entry->backtrace[i], str);
}
}
}
struct TreeEntry
{
int address; // backtrace
int total_size;
int total_count;
typedef TQValueList < TreeEntry > TreeList;
TreeList *subentries () const;
mutable TreeList *_subentries;
TreeEntry (int adr = 0, int size = 0, int count = 0, TreeList * sub = NULL );
bool operator == (const TreeEntry &) const;
bool operator < (const TreeEntry &) const;
};
typedef TQValueList < TreeEntry > TreeList;
inline TreeEntry::TreeEntry (int adr, int size, int count, TreeList * sub)
: address (adr), total_size (size), total_count (count), _subentries (sub)
{
}
inline bool TreeEntry::operator == (const TreeEntry & r) const
{ // this one is for TQValueList
return address == r.address;
}
inline
bool TreeEntry::operator < (const TreeEntry & r) const
{ // this one is for qBubbleSort() ... yes, ugly hack
// the result is also reversed to get descending order
return total_size > r.total_size;
}
inline TreeList * TreeEntry::subentries () const
{ // must be allocated only on-demand
if (_subentries == NULL)
_subentries = new TreeList; // this leaks memory, but oh well
return _subentries;
}
TreeList * treeList = 0;
void buildTree ()
{
for (Entry *entry : *entryList)
{
if (!entry->total_size)
continue;
TreeList * list = treeList;
int i;
for (i = 0; entry->backtrace[i]; ++i)
; // find last (topmost) backtrace entry
for (--i; i >= 0; --i)
{
TreeList::Iterator pos = list->find (entry->backtrace[i]);
if (pos == list->end ())
{
list->prepend (TreeEntry (entry->backtrace[i], entry->total_size,
entry->count));
pos = list->find (entry->backtrace[i]);
}
else
*pos = TreeEntry (entry->backtrace[i],
entry->total_size + (*pos).total_size,
entry->count + (*pos).total_count,
(*pos)._subentries);
list = (*pos).subentries ();
}
}
}
void processTree (TreeList * list, int threshold, int maxdepth, int depth)
{
if (++depth > maxdepth && maxdepth > 0) // maxdepth <= 0 means no limit
return;
for (TreeList::Iterator it = list->begin (); it != list->end ();)
{
if ((*it).subentries ()->count () > 0)
processTree ((*it).subentries (), threshold, maxdepth, depth);
if ((*it).total_size < threshold || (depth > maxdepth && maxdepth > 0))
{
it = list->remove (it);
continue;
}
++it;
}
qBubbleSort (*list);
}
void
dumpTree (const TreeEntry & entry, int level, char *indent, FILE * file)
{
bool extra_ind = (entry.subentries ()->count () > 0);
if(extra_ind)
indent[level++] = '+';
indent[level] = '\0';
char savindent[2];
const char * str = lookupAddress (entry.address);
fprintf (file, "%s- %d/%d %s[0x%08x]\n", indent,
entry.total_size, entry.total_count, str, entry.address);
if (level > 1)
{
savindent[0] = indent[level - 2];
savindent[1] = indent[level - 1];
if (indent[level - 2] == '+')
indent[level - 2] = '|';
else if (indent[level - 2] == '\\')
indent[level - 2] = ' ';
}
int pos = 0;
int last = entry.subentries ()->count() - 1;
for (TreeList::ConstIterator it = entry.subentries ()->begin ();
it != entry.subentries ()->end (); ++it)
{
if (pos == last)
indent[level - 1] = '\\';
dumpTree ((*it), level, indent, file);
++pos;
}
if (level > 1)
{
indent[level - 2] = savindent[0];
indent[level - 1] = savindent[1];
}
if (extra_ind)
--level;
indent[level] = '\0';
}
void dumpTree (FILE * file)
{
char indent[1024];
indent[0] = '\0';
for (TreeList::ConstIterator it = treeList->begin ();
it != treeList->end (); ++it)
dumpTree (*it, 0, indent, file);
}
void createTree (const TQCString & treefile, int threshold, int maxdepth)
{
FILE * file = fopen (treefile, "w");
if (file == NULL)
{
fprintf (stderr, "Can't write tree file.\n");
return;
}
treeList = new TreeList;
buildTree ();
processTree (treeList, threshold, maxdepth, 0);
dumpTree (file);
fclose (file);
}
void readExcludeFile(const char *name)
{
FILE *stream = fopen(name, "r");
if (!stream)
{
fprintf(stderr, "Error: Can't open %s.\n", name);
exit(1);
}
char line[1024];
while(!feof(stream))
{
if (!fgets(line, 1023, stream)) break;
if ((line[0] == 0) || (line[0] == '#')) continue;
line[strlen(line)-1] = 0;
excludes->append(line);
}
fclose(stream);
excludes->sort();
}
static TDECmdLineOptions options[] =
{
{ "x", 0, 0 },
{ "exclude <file>", "File containing symbols to exclude from output", 0},
{ "e", 0, 0 },
{ "exe <file>", "Executable to use for looking up unknown symbols", 0},
{ "+<trace-log>", "Log file to investigate", 0},
{"t", 0, 0},
{"tree <file>", "File to write allocations tree", 0},
{"th", 0, 0},
{"treethreshold <value>",
"Don't print subtrees which allocated less than <value> memory", 0},
{"td", 0, 0},
{"treedepth <value>",
"Don't print subtrees that are deeper than <value>", 0},
TDECmdLineLastOption
};
int main(int argc, char *argv[])
{
TDEInstance instance("kmtrace");
TDECmdLineArgs::init(argc, argv, "kmtrace", "KDE Memory leak tracer", "v1.0");
TDECmdLineArgs::addCmdLineOptions(options);
TDECmdLineArgs *args = TDECmdLineArgs::parsedArgs();
(void) args->count();
const char *logfile;
if(args->count())
logfile = args->arg(0);
else
logfile = "ktrace.out";
TQCString exe = args->getOption("exe");
TQCString exclude;
excludes = new TQStrList;
exclude = TQFile::encodeName(locate("data", "kmtrace/kde.excludes"));
if(!exclude.isEmpty())
readExcludeFile(exclude);
exclude = args->getOption("exclude");
if (!exclude.isEmpty())
{
fprintf(stderr, "Reading %s\n", exclude.data());
readExcludeFile(exclude);
}
FILE *stream = fopen(logfile, "r");
if (!stream)
{
fprintf(stderr, "Can't open %s\n", logfile);
exit(1);
}
entryDict = new TQIntDict<Entry>(9973);
symbolDict = new TQIntDict<char>(9973);
formatDict = new TQIntDict<char>(9973);
entryList = new std::list<Entry*>;
fprintf(stderr, "Running\n");
TQCString line;
char line2[1024];
while(!feof(stream))
{
fgets(line2, 1023, stream);
line2[strlen(line2)-1] = 0;
if (line2[0] == '=')
{
printf("%s\n", line2);
if( strcmp( line2, "= End" ) == 0 )
break;
}
else if (line2[0] == '#')
{
TQCString app(line2+1);
if(exe.isEmpty())
{
exe = app.stripWhiteSpace();
fprintf(stderr, "ktrace.out: malloc trace of %s\n", exe.data());
}
else if(!app.contains(exe.data()))
{
fprintf(stderr, "trace file was for application '%s', not '%s'\n", app.data(), exe.data());
exit(1);
}
}
else if (line2[0] == '@')
line = 0;
else if (line2[0] == '[')
line = line + ' ' + line2;
else if (line2[0] == '+')
{
allocCount++;
line = line + ' ' + line2;
parseLine(line, '+');
line = 0;
if (allocCount & 128)
{
fprintf(stderr, "\rTotal long term allocs: %d still allocated: %d ", allocCount, entryDict->count());
}
}
else if (line2[0] == '-')
{
line = line + ' ' + line2;
parseLine(line, '-');
line = 0;
}
else if (line2[0] == '<')
{
line2[0] = '-';
// First part of realloc (free)
TQCString reline = line + ' ' + line2;
parseLine(reline, '-');
}
else if (line2[0] == '>')
{
line2[0] = '+';
// Second part of realloc (alloc)
line = line + ' ' + line2;
parseLine(line, '+');
line = 0;
}
else
{
char *addr = index(line2,'[');
if (addr)
{
line = line + ' ' + addr;
}
}
}
leakedCount = count;
fprintf(stderr, "\rTotal long term allocs: %d still allocated: %d(%d) \n", allocCount, leakedCount, entryDict->count());
printf("Totals allocated: %d bytes in %d blocks.\n", totalBytesAlloced, allocCount);
printf("Maximum allocated: %d bytes / %d blocks.\n", maxBytes, maxCount);
fprintf(stderr, "Collecting duplicates...\n");
collectDupes();
fprintf(stderr, "Sorting...\n");
sortBlocks();
printf("Totals leaked: %d bytes in %d blocks.\n", totalBytesLeaked, leakedCount);
fprintf(stderr, "Looking up symbols...\n");
rewind(stream);
lookupSymbols(stream);
fprintf(stderr, "Looking up unknown symbols...\n");
lookupUnknownSymbols(exe);
fprintf(stderr, "Printing...\n");
dumpBlocks();
TQCString treeFile = args->getOption ("tree");
if (!treeFile.isEmpty ())
{
fprintf (stderr, "Creating allocation tree...\n");
createTree (treeFile, args->getOption ("treethreshold").toInt (),
args->getOption ("treedepth").toInt ());
}
fprintf(stderr, "Done.\n");
return 0;
}
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