tree f8cf3c609929a34bbdf40d83396545f00d1fd6b5
parent 022d303116f742cd337852d37547e2ea24d97a25
author Mathias Agopian <mathias.agopian@gmail.com> 1315292095 -0700
committer Mathias Agopian <mathias@google.com> 1323470337 -0800

implement pthread mutex deadlock detection

this works by building a directed graph of acquired
pthread mutexes and making sure there are no loops in
that graph.

this feature is enabled with:

    setprop debug.libc.pthread 1

when a potential deadlock is detected, a large warning is
output to the log with appropriate back traces.

currently disabled at compile-time. set PTHREAD_DEBUG_ENABLED=1
to enable.

Change-Id: I916eed2319599e8aaf8f229d3f18a8ddbec3aa8a