mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-28 07:48:14 +08:00
161bfed35a
If the file just needs the CHECK/CHECK_OP/NOTREACHED macros, use the appropriate header for that instead. Or if logging.h is not needed at all, remove it. This is both a nice cleanup (logging.h is a big header, and including it unnecessarily has compile-time costs), and part of the final step towards making logging.h no longer include check.h and the others. Bug: chromium:1031540 Change-Id: Ia46806bd95fe498bcf3cf6d2c13ffa4081678043 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/2255361 Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Hans Wennborg <hans@chromium.org>
68 lines
2.5 KiB
C++
68 lines
2.5 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
|
||
//
|
||
// 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 "minidump/minidump_thread_id_map.h"
|
||
|
||
#include <limits>
|
||
#include <set>
|
||
#include <utility>
|
||
|
||
#include "base/check_op.h"
|
||
#include "base/numerics/safe_conversions.h"
|
||
#include "snapshot/thread_snapshot.h"
|
||
|
||
namespace crashpad {
|
||
|
||
void BuildMinidumpThreadIDMap(
|
||
const std::vector<const ThreadSnapshot*>& thread_snapshots,
|
||
MinidumpThreadIDMap* thread_id_map) {
|
||
DCHECK(thread_id_map->empty());
|
||
|
||
// First, try truncating each 64-bit thread ID to 32 bits. If that’s possible
|
||
// for each unique 64-bit thread ID, then this will be used as the mapping.
|
||
// This preserves as much of the original thread ID as possible when feasible.
|
||
bool collision = false;
|
||
std::set<uint32_t> thread_ids_32;
|
||
for (const ThreadSnapshot* thread_snapshot : thread_snapshots) {
|
||
uint64_t thread_id_64 = thread_snapshot->ThreadID();
|
||
if (thread_id_map->find(thread_id_64) == thread_id_map->end()) {
|
||
uint32_t thread_id_32 = static_cast<uint32_t>(thread_id_64);
|
||
if (!thread_ids_32.insert(thread_id_32).second) {
|
||
collision = true;
|
||
break;
|
||
}
|
||
thread_id_map->insert(std::make_pair(thread_id_64, thread_id_32));
|
||
}
|
||
}
|
||
|
||
if (collision) {
|
||
// Since there was a collision, go back and assign each unique 64-bit thread
|
||
// ID its own sequential 32-bit equivalent. The 32-bit thread IDs will not
|
||
// bear any resemblance to the original 64-bit thread IDs.
|
||
thread_id_map->clear();
|
||
for (const ThreadSnapshot* thread_snapshot : thread_snapshots) {
|
||
uint64_t thread_id_64 = thread_snapshot->ThreadID();
|
||
if (thread_id_map->find(thread_id_64) == thread_id_map->end()) {
|
||
uint32_t thread_id_32 =
|
||
base::checked_cast<uint32_t>(thread_id_map->size());
|
||
thread_id_map->insert(std::make_pair(thread_id_64, thread_id_32));
|
||
}
|
||
}
|
||
|
||
DCHECK_LE(thread_id_map->size(), std::numeric_limits<uint32_t>::max());
|
||
}
|
||
}
|
||
|
||
} // namespace crashpad
|