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Diffstat (limited to 'compiler-rt/lib/profile/InstrProfiling.h')
| -rw-r--r-- | compiler-rt/lib/profile/InstrProfiling.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/compiler-rt/lib/profile/InstrProfiling.h b/compiler-rt/lib/profile/InstrProfiling.h index 0ffb402f3d0..945f1c4ac38 100644 --- a/compiler-rt/lib/profile/InstrProfiling.h +++ b/compiler-rt/lib/profile/InstrProfiling.h @@ -118,6 +118,28 @@ void INSTR_PROF_VALUE_PROF_FUNC( int __llvm_profile_write_file(void); /*! + * \brief this is a wrapper interface to \c __llvm_profile_write_file. + * After this interface is invoked, a arleady dumped flag will be set + * so that profile won't be dumped again during program exit. + * Invocation of interface __llvm_profile_reset_counters will clear + * the flag. This interface is designed to be used to collect profile + * data from user selected hot regions. The use model is + * __llvm_profile_reset_counters(); + * ... hot region 1 + * __llvm_profile_dump(); + * .. some other code + * __llvm_profile_reset_counters(); + * ... hot region 2 + * __llvm_profile_dump(); + * + * It is expected that on-line profile merging is on with \c %m specifier + * used in profile filename . If merging is not turned on, user is expected + * to invoke __llvm_profile_set_filename to specify different profile names + * for different regions before dumping to avoid profile write clobbering. + */ +int __llvm_profile_dump(void); + +/*! * \brief Set the filename for writing instrumentation data. * * Sets the filename to be used for subsequent calls to |
