foundationdb/fdbserver/workloads/SlowTaskWorkload.actor.cpp

75 lines
2.1 KiB
C++

/*
* SlowTaskWorkload.actor.cpp
*
* This source file is part of the FoundationDB open source project
*
* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fdbserver/workloads/workloads.actor.h"
#include "flow/SignalSafeUnwind.h"
#include "flow/actorcompiler.h" // This must be the last #include.
// Stress test the slow task profiler or flow profiler
struct SlowTaskWorkload : TestWorkload {
SlowTaskWorkload(WorkloadContext const& wcx)
: TestWorkload(wcx) {
}
virtual std::string description() {
return "SlowTaskWorkload";
}
virtual Future<Void> start(Database const& cx) {
return go();
}
virtual Future<bool> check(Database const& cx) {
return true;
}
virtual void getMetrics(vector<PerfMetric>& m) {
}
ACTOR static Future<Void> go() {
wait( delay(1) );
int64_t phc = dl_iterate_phdr_calls;
int64_t exc = 0;
fprintf(stderr, "Slow task starting\n");
for(int i=0; i<10; i++) {
fprintf(stderr, " %d\n", i);
double end = timer() + 1;
while( timer() < end ) {
do_slow_exception_thing(&exc);
}
}
fprintf(stderr, "Slow task complete: %lld exceptions; %lld calls to dl_iterate_phdr\n", exc, dl_iterate_phdr_calls - phc);
return Void();
}
static void do_slow_exception_thing(int64_t* exc_count) {
// Has to be a non-actor function so that actual exception unwinding occurs
for(int j=0; j<1000; j++)
try {
throw success();
} catch (Error& e) {
++*exc_count;
}
}
};
WorkloadFactory<SlowTaskWorkload> SlowTaskWorkloadFactory("SlowTaskWorkload");