1 /* Copyright (c) 2010, Google Inc.
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31 * Author: Chris Ruemmler
34 #ifndef BASE_AUXILIARY_SYNCHRONIZATION_PROFILING_H_
35 #define BASE_AUXILIARY_SYNCHRONIZATION_PROFILING_H_
37 #include "base/basictypes.h"
41 // We can do contention-profiling of SpinLocks, but the code is in
42 // mutex.cc, which is not always linked in with spinlock. Hence we
43 // provide a weak definition, which are used if mutex.cc isn't linked in.
45 // Submit the number of cycles the spinlock spent contending.
46 ATTRIBUTE_WEAK extern void SubmitSpinLockProfileData(const void *, int64);
47 extern void SubmitSpinLockProfileData(const void *contendedlock,
50 #endif // BASE_AUXILIARY_SYNCHRONIZATION_PROFILING_H_