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6614a48418
This eliminates the need to remember to call PERF_TIMER_STOP when a section has
been timed. This allows more useful design with the perf timers and enables
possible return value optimizations. Simplistic example:
class Foo {
public:
Foo(int v) : m_v(v);
private:
int m_v;
}
Foo makeFrobbedFoo(int *errno)
{
*errno = 0;
return Foo();
}
Foo bar(int *errno)
{
PERF_TIMER_GUARD(some_timer);
return makeFrobbedFoo(errno);
}
int main(int argc, char[] argv)
{
Foo f;
int errno;
f = bar(&errno);
if (errno)
return -1;
return 0;
}
After bar() is called, perf_context.some_timer would be incremented as if
Stop(&perf_context.some_timer) was called at the end, and the compiler is still
able to produce optimizations on the return value from makeFrobbedFoo() through
to main().
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| .. | ||
| arena.cc | ||
| arena.h | ||
| arena_test.cc | ||
| auto_roll_logger.cc | ||
| auto_roll_logger.h | ||
| auto_roll_logger_test.cc | ||
| autovector.h | ||
| autovector_test.cc | ||
| benchharness.cc | ||
| benchharness.h | ||
| benchharness_test.cc | ||
| blob_store.cc | ||
| blob_store.h | ||
| blob_store_test.cc | ||
| bloom.cc | ||
| bloom_test.cc | ||
| build_version.h | ||
| cache.cc | ||
| cache_test.cc | ||
| coding.cc | ||
| coding.h | ||
| coding_test.cc | ||
| comparator.cc | ||
| crc32c.cc | ||
| crc32c.h | ||
| crc32c_test.cc | ||
| db_info_dummper.cc | ||
| dynamic_bloom.cc | ||
| dynamic_bloom.h | ||
| dynamic_bloom_test.cc | ||
| env.cc | ||
| env_hdfs.cc | ||
| env_posix.cc | ||
| env_test.cc | ||
| filelock_test.cc | ||
| filter_policy.cc | ||
| hash.cc | ||
| hash.h | ||
| hash_cuckoo_rep.cc | ||
| hash_cuckoo_rep.h | ||
| hash_linklist_rep.cc | ||
| hash_linklist_rep.h | ||
| hash_skiplist_rep.cc | ||
| hash_skiplist_rep.h | ||
| histogram.cc | ||
| histogram.h | ||
| histogram_test.cc | ||
| iostats_context.cc | ||
| iostats_context_imp.h | ||
| ldb_cmd.cc | ||
| ldb_cmd.h | ||
| ldb_cmd_execute_result.h | ||
| ldb_tool.cc | ||
| log_buffer.cc | ||
| log_buffer.h | ||
| log_write_bench.cc | ||
| logging.cc | ||
| logging.h | ||
| manual_compaction_test.cc | ||
| murmurhash.cc | ||
| murmurhash.h | ||
| mutexlock.h | ||
| options.cc | ||
| options_builder.cc | ||
| options_test.cc | ||
| perf_context.cc | ||
| perf_context_imp.h | ||
| posix_logger.h | ||
| random.h | ||
| rate_limiter.cc | ||
| rate_limiter.h | ||
| rate_limiter_test.cc | ||
| signal_test.cc | ||
| skiplistrep.cc | ||
| slice.cc | ||
| statistics.cc | ||
| statistics.h | ||
| status.cc | ||
| stl_wrappers.h | ||
| stop_watch.h | ||
| string_util.cc | ||
| string_util.h | ||
| sync_point.cc | ||
| sync_point.h | ||
| testharness.cc | ||
| testharness.h | ||
| testutil.cc | ||
| testutil.h | ||
| thread_local.cc | ||
| thread_local.h | ||
| thread_local_test.cc | ||
| vectorrep.cc | ||
| xxhash.cc | ||
| xxhash.h | ||