libsanitizer/tsan/tsan_ignoreset.cpp

   1 //===-- tsan_ignoreset.cpp ------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file is a part of ThreadSanitizer (TSan), a race detector.
  10 //
  11 //===----------------------------------------------------------------------===//
  12 #include "tsan_ignoreset.h"
  13
  14 namespace __tsan {
  15
  16 const uptr IgnoreSet::kMaxSize;
  17
  18 IgnoreSet::IgnoreSet()
  19     : size_() {
  20 }
  21
  22 void IgnoreSet::Add(u32 stack_id) {
  23   if (size_ == kMaxSize)
  24     return;
  25   for (uptr i = 0; i < size_; i++) {
  26     if (stacks_[i] == stack_id)
  27       return;
  28   }
  29   stacks_[size_++] = stack_id;
  30 }
  31
  32 void IgnoreSet::Reset() {
  33   size_ = 0;
  34 }
  35
  36 uptr IgnoreSet::Size() const {
  37   return size_;
  38 }
  39
  40 u32 IgnoreSet::At(uptr i) const {
  41   CHECK_LT(i, size_);
  42   CHECK_LE(size_, kMaxSize);
  43   return stacks_[i];
  44 }
  45
  46 }  // namespace __tsan