74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "util/trace_metrics.h"
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#include <glog/logging.h>
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#include <glog/stl_logging.h>
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#include <algorithm>
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#include <cctype>
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#include <cstring>
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#include <map>
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#include <mutex>
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#include <ostream>
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#include <string>
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#include <utility>
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#include "util/debug/leakcheck_disabler.h"
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using std::string;
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namespace doris {
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// Make glog's STL-compatible operators visible inside this namespace.
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using ::operator<<;
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namespace {
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static SpinLock g_intern_map_lock;
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typedef std::map<string, const char*> InternMap;
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static InternMap* g_intern_map;
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} // anonymous namespace
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const char* TraceMetrics::InternName(const string& name) {
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DCHECK(std::all_of(name.begin(), name.end(), [](char c) { return isprint(c); }))
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<< "not printable: " << name;
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debug::ScopedLeakCheckDisabler no_leakcheck;
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std::lock_guard<SpinLock> l(g_intern_map_lock);
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if (g_intern_map == nullptr) {
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g_intern_map = new InternMap();
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}
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InternMap::iterator it = g_intern_map->find(name);
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if (it != g_intern_map->end()) {
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return it->second;
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}
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const char* dup = strdup(name.c_str());
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(*g_intern_map)[name] = dup;
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// We don't expect this map to grow large.
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DCHECK_LT(g_intern_map->size(), 100) << "Too many interned strings: " << *g_intern_map;
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return dup;
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}
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} // namespace doris
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