Introduce sentry for crash data collection

thirdparty/sentry-native/external/libunwindstack-ndk/ThreadEntry.cpp

@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * 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 <pthread.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/types.h>
+#include <time.h>
+#include <ucontext.h>
+
+#include <chrono>
+
+#include <unwindstack/Log.h>
+
+#include "ThreadEntry.h"
+
+namespace unwindstack {
+
+std::mutex ThreadEntry::entries_mutex_;
+std::map<pid_t, ThreadEntry*> ThreadEntry::entries_;
+
+// Assumes that ThreadEntry::entries_mutex_ has already been locked before
+// creating a ThreadEntry object.
+ThreadEntry::ThreadEntry(pid_t tid) : tid_(tid), ref_count_(1), wait_value_(0) {
+  // Add ourselves to the global list.
+  entries_[tid_] = this;
+}
+
+ThreadEntry* ThreadEntry::Get(pid_t tid, bool create) {
+  ThreadEntry* entry = nullptr;
+
+  std::lock_guard<std::mutex> guard(entries_mutex_);
+  auto iter = entries_.find(tid);
+  if (iter == entries_.end()) {
+    if (create) {
+      entry = new ThreadEntry(tid);
+    }
+  } else {
+    entry = iter->second;
+    entry->ref_count_++;
+  }
+
+  return entry;
+}
+
+void ThreadEntry::Remove(ThreadEntry* entry) {
+  entry->Unlock();
+
+  std::lock_guard<std::mutex> guard(entries_mutex_);
+  if (--entry->ref_count_ == 0) {
+    delete entry;
+  }
+}
+
+// Assumes that ThreadEntry::entries_mutex_ has already been locked before
+// deleting a ThreadEntry object.
+ThreadEntry::~ThreadEntry() {
+  auto iter = entries_.find(tid_);
+  if (iter != entries_.end()) {
+    entries_.erase(iter);
+  }
+}
+
+bool ThreadEntry::Wait(WaitType type) {
+  static const std::chrono::duration wait_time(std::chrono::seconds(5));
+  std::unique_lock<std::mutex> lock(wait_mutex_);
+  if (wait_cond_.wait_for(lock, wait_time, [this, type] { return wait_value_ == type; })) {
+    return true;
+  } else {
+    log_async_safe("pthread_cond_timedwait for value %d failed", type);
+    return false;
+  }
+}
+
+void ThreadEntry::Wake() {
+  wait_mutex_.lock();
+  wait_value_++;
+  wait_mutex_.unlock();
+
+  wait_cond_.notify_one();
+}
+
+void ThreadEntry::CopyUcontextFromSigcontext(void* sigcontext) {
+  ucontext_t* ucontext = reinterpret_cast<ucontext_t*>(sigcontext);
+  // The only thing the unwinder cares about is the mcontext data.
+  memcpy(&ucontext_.uc_mcontext, &ucontext->uc_mcontext, sizeof(ucontext->uc_mcontext));
+}
+
+}  // namespace unwindstack