Make the profile buffer larger in third_party/tcmalloc/chromium.

third_party/tcmalloc/chromium/src/heap-profiler.cc

 // Copyright (c) 2005, 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 131 matching lines @@
 static LowLevelAlloc::Arena *heap_profiler_memory;
 
 static void* ProfilerMalloc(size_t bytes) {
   return LowLevelAlloc::AllocWithArena(bytes, heap_profiler_memory);
 }
 static void ProfilerFree(void* p) {
   LowLevelAlloc::Free(p);
 }
 
 // We use buffers of this size in DoGetHeapProfile.
-static const int kProfileBufferSize = 1 << 20;
+static const int kProfileBufferSize = 5 << 20;

[Alexander Potapenko, 2011/12/20 13:19:38]

There should be some comment that describes this change.

[Dai Mikurube (NOT FULLTIME), 2011/12/21 05:32:45]

Done.

 
 // This is a last-ditch buffer we use in DumpProfileLocked in case we
 // can't allocate more memory from ProfilerMalloc.  We expect this
 // will be used by HeapProfileEndWriter when the application has to
 // exit due to out-of-memory.  This buffer is allocated in
 // HeapProfilerStart.  Access to this must be protected by heap_lock.
 static char* global_profiler_buffer = NULL;
 
 
 //----------------------------------------------------------------------
@@ skipping 392 matching lines @@
 
 // class used for finalization -- dumps the heap-profile at program exit
 struct HeapProfileEndWriter {
   ~HeapProfileEndWriter() { HeapProfilerDump("Exiting"); }
 };
 
 // We want to make sure tcmalloc is up and running before starting the profiler
 static const TCMallocGuard tcmalloc_initializer;
 REGISTER_MODULE_INITIALIZER(heapprofiler, HeapProfilerInit());
 static HeapProfileEndWriter heap_profile_end_writer;