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Requires compiling with linux_use_tcmalloc=1.
When enabled by --heap-profiler flag in test_shell exposes
chromium.HeapProfiler object to JavaScript. The object has three
methods:
o start() -- starts profiling
o dump() -- dumps data accumulated since start() to file
named like chromium-YYYY-MM-DD-TS.heap
o stop() -- stops profiling.
Output can be analyzed by third_party/tcmalloc/tcmalloc/src/pprof.
For example:
$ third_party/tcmalloc/tcmalloc/src/pprof \
sconsbuild/Release/test_shell \
chromium-2009-11-06-1234567890.heap
See http://code.google.com/p/google-perftools/ for details on how to
use pprof.
Patch contributed by vitalyr@chromium.org. Original review at
http://codereview.chromium.org/377010/show.
TBR=vitalyr
Review URL: http://codereview.chromium.org/390015
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@31688 0039d316-1c4b-4281-b951-d872f2087c98
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