[NOT TO COMMIT!] Merge Chromium-specific changes in tcmalloc thru. the original gperftools r136.

third_party/tcmalloc/chromium/src/heap-profile-table.cc

 // Copyright (c) 2006, Google Inc.
 // All rights reserved.
 // 
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 // 
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
@@ skipping 508 matching lines @@
     return true;
   } else {
     RAW_LOG(ERROR, "Failed dumping filtered heap profile to %s", file_name);
     return false;
   }
 }
 
 void HeapProfileTable::CleanupOldProfiles(const char* prefix) {
   if (!FLAGS_cleanup_old_heap_profiles)
     return;
-  string pattern = string(prefix) + ".*" + kFileExt;
+  char buf[1000];
+  snprintf(buf, 1000,"%s.%05d.", prefix, getpid());
+  string pattern = string(buf) + ".*" + kFileExt;
+
 #if defined(HAVE_GLOB_H)
   glob_t g;
   const int r = glob(pattern.c_str(), GLOB_ERR, NULL, &g);
   if (r == 0 || r == GLOB_NOMATCH) {
     const int prefix_length = strlen(prefix);
     for (int i = 0; i < g.gl_pathc; i++) {
       const char* fname = g.gl_pathv[i];
       if ((strlen(fname) >= prefix_length) &&
           (memcmp(fname, prefix, prefix_length) == 0)) {
         RAW_VLOG(1, "Removing old heap profile %s", fname);
@@ skipping 147 matching lines @@
                                               char* unused) {
   // Perhaps also log the allocation stack trace (unsymbolized)
   // on this line in case somebody finds it useful.
   RAW_LOG(ERROR, "leaked %"PRIuS" byte object %p", v->bytes, ptr);
 }
 
 void HeapProfileTable::Snapshot::ReportIndividualObjects() {
   char unused;
   map_.Iterate(ReportObject, &unused);
 }