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📄 sancov_flags.cpp(1.64 KB)
📄 sancov_flags.h(1.08 KB)
📄 sancov_flags.inc(777 B)
📄 sanitizer_addrhashmap.h(9.19 KB)
📄 sanitizer_allocator.cpp(8.73 KB)
📄 sanitizer_allocator.h(2.69 KB)
📄 sanitizer_allocator_bytemap.h(3.12 KB)
📄 sanitizer_allocator_checks.cpp(686 B)
📄 sanitizer_allocator_checks.h(2.67 KB)
📄 sanitizer_allocator_combined.h(6.29 KB)
📄 sanitizer_allocator_interface.h(1.83 KB)
📄 sanitizer_allocator_internal.h(2.03 KB)
📄 sanitizer_allocator_local_cache.h(8.95 KB)
📄 sanitizer_allocator_primary32.h(12.64 KB)
📄 sanitizer_allocator_primary64.h(32.71 KB)
📄 sanitizer_allocator_report.cpp(4.68 KB)
📄 sanitizer_allocator_report.h(1.72 KB)
📄 sanitizer_allocator_secondary.h(10.78 KB)
📄 sanitizer_allocator_size_class_map.h(10.12 KB)
📄 sanitizer_allocator_stats.h(2.76 KB)
📄 sanitizer_asm.h(2.57 KB)
📄 sanitizer_atomic.h(1.97 KB)
📄 sanitizer_atomic_clang.h(3.42 KB)
📄 sanitizer_atomic_clang_mips.h(3.77 KB)
📄 sanitizer_atomic_clang_other.h(3.02 KB)
📄 sanitizer_atomic_clang_x86.h(3.77 KB)
📄 sanitizer_atomic_msvc.h(8.53 KB)
📄 sanitizer_bitvector.h(9.43 KB)
📄 sanitizer_bvgraph.h(4.62 KB)
📄 sanitizer_common.cpp(10.13 KB)
📄 sanitizer_common.h(30.64 KB)
📄 sanitizer_common_interceptors.inc(348.66 KB)
📄 sanitizer_common_interceptors_format.inc(16.84 KB)
📄 sanitizer_common_interceptors_ioctl.inc(22.13 KB)
📄 sanitizer_common_interceptors_netbsd_compat.inc(4.07 KB)
📄 sanitizer_common_interceptors_vfork_aarch64.inc.S(1.23 KB)
📄 sanitizer_common_interceptors_vfork_arm.inc.S(1.24 KB)
📄 sanitizer_common_interceptors_vfork_i386.inc.S(1.66 KB)
📄 sanitizer_common_interceptors_vfork_x86_64.inc.S(1.03 KB)
📄 sanitizer_common_interface.inc(2.05 KB)
📄 sanitizer_common_interface_posix.inc(732 B)
📄 sanitizer_common_libcdep.cpp(5.4 KB)
📄 sanitizer_common_nolibc.cpp(1.12 KB)
📄 sanitizer_common_syscalls.inc(85 KB)
📄 sanitizer_coverage_fuchsia.cpp(10.1 KB)
📄 sanitizer_coverage_interface.inc(1.73 KB)
📄 sanitizer_coverage_libcdep_new.cpp(7.39 KB)
📄 sanitizer_coverage_win_dll_thunk.cpp(1.03 KB)
📄 sanitizer_coverage_win_dynamic_runtime_thunk.cpp(1.16 KB)
📄 sanitizer_coverage_win_sections.cpp(3.36 KB)
📄 sanitizer_coverage_win_weak_interception.cpp(1.17 KB)
📄 sanitizer_dbghelp.h(1.44 KB)
📄 sanitizer_deadlock_detector.h(13.28 KB)
📄 sanitizer_deadlock_detector1.cpp(5.6 KB)
📄 sanitizer_deadlock_detector2.cpp(10.84 KB)
📄 sanitizer_deadlock_detector_interface.h(2.66 KB)
📄 sanitizer_errno.cpp(1.09 KB)
📄 sanitizer_errno.h(1.3 KB)
📄 sanitizer_errno_codes.h(1.1 KB)
📄 sanitizer_file.cpp(6.24 KB)
📄 sanitizer_file.h(3.67 KB)
📄 sanitizer_flag_parser.cpp(5.55 KB)
📄 sanitizer_flag_parser.h(5.71 KB)
📄 sanitizer_flags.cpp(3.95 KB)
📄 sanitizer_flags.h(2.13 KB)
📄 sanitizer_flags.inc(12.73 KB)
📄 sanitizer_freebsd.h(3.31 KB)
📄 sanitizer_fuchsia.cpp(16.58 KB)
📄 sanitizer_fuchsia.h(1.03 KB)
📄 sanitizer_getauxval.h(1.73 KB)
📄 sanitizer_glibc_version.h(748 B)
📄 sanitizer_hash.h(1.04 KB)
📄 sanitizer_interceptors_ioctl_netbsd.inc(68.81 KB)
📄 sanitizer_interface_internal.h(5.28 KB)
📄 sanitizer_internal_defs.h(14.28 KB)
📄 sanitizer_lfstack.h(2.08 KB)
📄 sanitizer_libc.cpp(7.21 KB)
📄 sanitizer_libc.h(3.23 KB)
📄 sanitizer_libignore.cpp(4.24 KB)
📄 sanitizer_libignore.h(3.5 KB)
📄 sanitizer_linux.cpp(71.58 KB)
📄 sanitizer_linux.h(5.47 KB)
📄 sanitizer_linux_libcdep.cpp(25.67 KB)
📄 sanitizer_linux_s390.cpp(6.91 KB)
📄 sanitizer_list.h(3.81 KB)
📄 sanitizer_local_address_space_view.h(3.67 KB)
📄 sanitizer_mac.cpp(38.67 KB)
📄 sanitizer_mac.h(2.49 KB)
📄 sanitizer_mac_libcdep.cpp(968 B)
📄 sanitizer_malloc_mac.inc(13.06 KB)
📄 sanitizer_mutex.h(5.17 KB)
📄 sanitizer_netbsd.cpp(9.95 KB)
📄 sanitizer_openbsd.cpp(3.17 KB)
📄 sanitizer_persistent_allocator.cpp(687 B)
📄 sanitizer_persistent_allocator.h(2.31 KB)
📄 sanitizer_placement_new.h(885 B)
📄 sanitizer_platform.h(10.11 KB)
📄 sanitizer_platform_interceptors.h(24.93 KB)
📄 sanitizer_platform_limits_freebsd.cpp(19.79 KB)
📄 sanitizer_platform_limits_freebsd.h(18.41 KB)
📄 sanitizer_platform_limits_linux.cpp(3.32 KB)
📄 sanitizer_platform_limits_netbsd.cpp(109.73 KB)
📄 sanitizer_platform_limits_netbsd.h(81.54 KB)
📄 sanitizer_platform_limits_openbsd.cpp(8.69 KB)
📄 sanitizer_platform_limits_openbsd.h(8.68 KB)
📄 sanitizer_platform_limits_posix.cpp(48.89 KB)
📄 sanitizer_platform_limits_posix.h(40.65 KB)
📄 sanitizer_platform_limits_solaris.cpp(11.93 KB)
📄 sanitizer_platform_limits_solaris.h(12.26 KB)
📄 sanitizer_posix.cpp(11.93 KB)
📄 sanitizer_posix.h(5.14 KB)
📄 sanitizer_posix_libcdep.cpp(16.21 KB)
📄 sanitizer_printf.cpp(12.07 KB)
📄 sanitizer_procmaps.h(2.93 KB)
📄 sanitizer_procmaps_bsd.cpp(3.81 KB)
📄 sanitizer_procmaps_common.cpp(5.27 KB)
📄 sanitizer_procmaps_fuchsia.cpp(2.51 KB)
📄 sanitizer_procmaps_linux.cpp(2.9 KB)
📄 sanitizer_procmaps_mac.cpp(13.7 KB)
📄 sanitizer_procmaps_solaris.cpp(2.18 KB)
📄 sanitizer_ptrauth.h(720 B)
📄 sanitizer_quarantine.h(9.57 KB)
📄 sanitizer_report_decorator.h(1.89 KB)
📄 sanitizer_ring_buffer.h(4.7 KB)
📄 sanitizer_rtems.cpp(7.61 KB)
📄 sanitizer_rtems.h(772 B)
📄 sanitizer_signal_interceptors.inc(2.89 KB)
📄 sanitizer_solaris.cpp(6.6 KB)
📄 sanitizer_stackdepot.cpp(4.54 KB)
📄 sanitizer_stackdepot.h(2.13 KB)
📄 sanitizer_stackdepotbase.h(5.58 KB)
📄 sanitizer_stacktrace.cpp(4.58 KB)
📄 sanitizer_stacktrace.h(5.65 KB)
📄 sanitizer_stacktrace_libcdep.cpp(5.54 KB)
📄 sanitizer_stacktrace_printer.cpp(9.08 KB)
📄 sanitizer_stacktrace_printer.h(3.08 KB)
📄 sanitizer_stacktrace_sparc.cpp(3.05 KB)
📄 sanitizer_stoptheworld.h(2.34 KB)
📄 sanitizer_stoptheworld_fuchsia.cpp(1.28 KB)
📄 sanitizer_stoptheworld_linux_libcdep.cpp(20.8 KB)
📄 sanitizer_stoptheworld_mac.cpp(5.29 KB)
📄 sanitizer_stoptheworld_netbsd_libcdep.cpp(11.02 KB)
📄 sanitizer_suppressions.cpp(5.67 KB)
📄 sanitizer_suppressions.h(1.69 KB)
📄 sanitizer_symbolizer.cpp(3.65 KB)
📄 sanitizer_symbolizer.h(6.62 KB)
📄 sanitizer_symbolizer_fuchsia.h(1.56 KB)
📄 sanitizer_symbolizer_internal.h(5.8 KB)
📄 sanitizer_symbolizer_libbacktrace.cpp(6.1 KB)
📄 sanitizer_symbolizer_libbacktrace.h(1.49 KB)
📄 sanitizer_symbolizer_libcdep.cpp(17.45 KB)
📄 sanitizer_symbolizer_mac.cpp(8.48 KB)
📄 sanitizer_symbolizer_mac.h(1.37 KB)
📄 sanitizer_symbolizer_markup.cpp(5.39 KB)
📄 sanitizer_symbolizer_posix_libcdep.cpp(16.5 KB)
📄 sanitizer_symbolizer_report.cpp(10.01 KB)
📄 sanitizer_symbolizer_rtems.h(1.56 KB)
📄 sanitizer_symbolizer_win.cpp(11.59 KB)
📄 sanitizer_syscall_generic.inc(1.06 KB)
📄 sanitizer_syscall_linux_aarch64.inc(4.58 KB)
📄 sanitizer_syscall_linux_arm.inc(4.58 KB)
📄 sanitizer_syscall_linux_x86_64.inc(3.07 KB)
📄 sanitizer_syscalls_netbsd.inc(120.97 KB)
📄 sanitizer_termination.cpp(2.86 KB)
📄 sanitizer_thread_registry.cpp(10.31 KB)
📄 sanitizer_thread_registry.h(5.44 KB)
📄 sanitizer_tls_get_addr.cpp(5.29 KB)
📄 sanitizer_tls_get_addr.h(2.21 KB)
📄 sanitizer_type_traits.cpp(708 B)
📄 sanitizer_type_traits.h(1.49 KB)
📄 sanitizer_unwind_linux_libcdep.cpp(6.13 KB)
📄 sanitizer_unwind_win.cpp(2.41 KB)
📄 sanitizer_vector.h(2.57 KB)
📄 sanitizer_win.cpp(33.3 KB)
📄 sanitizer_win.h(851 B)
📄 sanitizer_win_defs.h(7.23 KB)
📄 sanitizer_win_dll_thunk.cpp(3.41 KB)
📄 sanitizer_win_dll_thunk.h(11.13 KB)
📄 sanitizer_win_dynamic_runtime_thunk.cpp(1.16 KB)
📄 sanitizer_win_weak_interception.cpp(3.49 KB)
📄 sanitizer_win_weak_interception.h(1.64 KB)
📁 symbolizer
📄 weak_symbols.txt(230 B)

Editing: sanitizer_bitvector.h

//===-- sanitizer_bitvector.h -----------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Specializer BitVector implementation.
//
//===----------------------------------------------------------------------===//

#ifndef SANITIZER_BITVECTOR_H
#define SANITIZER_BITVECTOR_H

#include "sanitizer_common.h"

namespace __sanitizer {

// Fixed size bit vector based on a single basic integer.
template <class basic_int_t = uptr>
class BasicBitVector {
 public:
  enum SizeEnum : uptr { kSize = sizeof(basic_int_t) * 8 };

uptr size() const { return kSize; }
  // No CTOR.
  void clear() { bits_ = 0; }
  void setAll() { bits_ = ~(basic_int_t)0; }
  bool empty() const { return bits_ == 0; }

// Returns true if the bit has changed from 0 to 1.
  bool setBit(uptr idx) {
    basic_int_t old = bits_;
    bits_ |= mask(idx);
    return bits_ != old;
  }

// Returns true if the bit has changed from 1 to 0.
  bool clearBit(uptr idx) {
    basic_int_t old = bits_;
    bits_ &= ~mask(idx);
    return bits_ != old;
  }

bool getBit(uptr idx) const { return (bits_ & mask(idx)) != 0; }

uptr getAndClearFirstOne() {
    CHECK(!empty());
    uptr idx = LeastSignificantSetBitIndex(bits_);
    clearBit(idx);
    return idx;
  }

// Do "this |= v" and return whether new bits have been added.
  bool setUnion(const BasicBitVector &v) {
    basic_int_t old = bits_;
    bits_ |= v.bits_;
    return bits_ != old;
  }

// Do "this &= v" and return whether any bits have been removed.
  bool setIntersection(const BasicBitVector &v) {
    basic_int_t old = bits_;
    bits_ &= v.bits_;
    return bits_ != old;
  }

// Do "this &= ~v" and return whether any bits have been removed.
  bool setDifference(const BasicBitVector &v) {
    basic_int_t old = bits_;
    bits_ &= ~v.bits_;
    return bits_ != old;
  }

void copyFrom(const BasicBitVector &v) { bits_ = v.bits_; }

// Returns true if 'this' intersects with 'v'.
  bool intersectsWith(const BasicBitVector &v) const {
    return (bits_ & v.bits_) != 0;
  }

// for (BasicBitVector<>::Iterator it(bv); it.hasNext();) {
  //   uptr idx = it.next();
  //   use(idx);
  // }
  class Iterator {
   public:
    Iterator() { }
    explicit Iterator(const BasicBitVector &bv) : bv_(bv) {}
    bool hasNext() const { return !bv_.empty(); }
    uptr next() { return bv_.getAndClearFirstOne(); }
    void clear() { bv_.clear(); }
   private:
    BasicBitVector bv_;
  };

private:
  basic_int_t mask(uptr idx) const {
    CHECK_LT(idx, size());
    return (basic_int_t)1UL << idx;
  }
  basic_int_t bits_;
};

// Fixed size bit vector of (kLevel1Size*BV::kSize**2) bits.
// The implementation is optimized for better performance on
// sparse bit vectors, i.e. the those with few set bits.
template <uptr kLevel1Size = 1, class BV = BasicBitVector<> >
class TwoLevelBitVector {
  // This is essentially a 2-level bit vector.
  // Set bit in the first level BV indicates that there are set bits
  // in the corresponding BV of the second level.
  // This structure allows O(kLevel1Size) time for clear() and empty(),
  // as well fast handling of sparse BVs.
 public:
  enum SizeEnum : uptr { kSize = BV::kSize * BV::kSize * kLevel1Size };
  // No CTOR.

uptr size() const { return kSize; }

void clear() {
    for (uptr i = 0; i < kLevel1Size; i++)
      l1_[i].clear();
  }

void setAll() {
    for (uptr i0 = 0; i0 < kLevel1Size; i0++) {
      l1_[i0].setAll();
      for (uptr i1 = 0; i1 < BV::kSize; i1++)
        l2_[i0][i1].setAll();
    }
  }

bool empty() const {
    for (uptr i = 0; i < kLevel1Size; i++)
      if (!l1_[i].empty())
        return false;
    return true;
  }

// Returns true if the bit has changed from 0 to 1.
  bool setBit(uptr idx) {
    check(idx);
    uptr i0 = idx0(idx);
    uptr i1 = idx1(idx);
    uptr i2 = idx2(idx);
    if (!l1_[i0].getBit(i1)) {
      l1_[i0].setBit(i1);
      l2_[i0][i1].clear();
    }
    bool res = l2_[i0][i1].setBit(i2);
    // Printf("%s: %zd => %zd %zd %zd; %d\n", __func__,
    // idx, i0, i1, i2, res);
    return res;
  }

bool clearBit(uptr idx) {
    check(idx);
    uptr i0 = idx0(idx);
    uptr i1 = idx1(idx);
    uptr i2 = idx2(idx);
    bool res = false;
    if (l1_[i0].getBit(i1)) {
      res = l2_[i0][i1].clearBit(i2);
      if (l2_[i0][i1].empty())
        l1_[i0].clearBit(i1);
    }
    return res;
  }

bool getBit(uptr idx) const {
    check(idx);
    uptr i0 = idx0(idx);
    uptr i1 = idx1(idx);
    uptr i2 = idx2(idx);
    // Printf("%s: %zd => %zd %zd %zd\n", __func__, idx, i0, i1, i2);
    return l1_[i0].getBit(i1) && l2_[i0][i1].getBit(i2);
  }

uptr getAndClearFirstOne() {
    for (uptr i0 = 0; i0 < kLevel1Size; i0++) {
      if (l1_[i0].empty()) continue;
      uptr i1 = l1_[i0].getAndClearFirstOne();
      uptr i2 = l2_[i0][i1].getAndClearFirstOne();
      if (!l2_[i0][i1].empty())
        l1_[i0].setBit(i1);
      uptr res = i0 * BV::kSize * BV::kSize + i1 * BV::kSize + i2;
      // Printf("getAndClearFirstOne: %zd %zd %zd => %zd\n", i0, i1, i2, res);
      return res;
    }
    CHECK(0);
    return 0;
  }

// Do "this |= v" and return whether new bits have been added.
  bool setUnion(const TwoLevelBitVector &v) {
    bool res = false;
    for (uptr i0 = 0; i0 < kLevel1Size; i0++) {
      BV t = v.l1_[i0];
      while (!t.empty()) {
        uptr i1 = t.getAndClearFirstOne();
        if (l1_[i0].setBit(i1))
          l2_[i0][i1].clear();
        if (l2_[i0][i1].setUnion(v.l2_[i0][i1]))
          res = true;
      }
    }
    return res;
  }

// Do "this &= v" and return whether any bits have been removed.
  bool setIntersection(const TwoLevelBitVector &v) {
    bool res = false;
    for (uptr i0 = 0; i0 < kLevel1Size; i0++) {
      if (l1_[i0].setIntersection(v.l1_[i0]))
        res = true;
      if (!l1_[i0].empty()) {
        BV t = l1_[i0];
        while (!t.empty()) {
          uptr i1 = t.getAndClearFirstOne();
          if (l2_[i0][i1].setIntersection(v.l2_[i0][i1]))
            res = true;
          if (l2_[i0][i1].empty())
            l1_[i0].clearBit(i1);
        }
      }
    }
    return res;
  }

// Do "this &= ~v" and return whether any bits have been removed.
  bool setDifference(const TwoLevelBitVector &v) {
    bool res = false;
    for (uptr i0 = 0; i0 < kLevel1Size; i0++) {
      BV t = l1_[i0];
      t.setIntersection(v.l1_[i0]);
      while (!t.empty()) {
        uptr i1 = t.getAndClearFirstOne();
        if (l2_[i0][i1].setDifference(v.l2_[i0][i1]))
          res = true;
        if (l2_[i0][i1].empty())
          l1_[i0].clearBit(i1);
      }
    }
    return res;
  }

void copyFrom(const TwoLevelBitVector &v) {
    clear();
    setUnion(v);
  }

// Returns true if 'this' intersects with 'v'.
  bool intersectsWith(const TwoLevelBitVector &v) const {
    for (uptr i0 = 0; i0 < kLevel1Size; i0++) {
      BV t = l1_[i0];
      t.setIntersection(v.l1_[i0]);
      while (!t.empty()) {
        uptr i1 = t.getAndClearFirstOne();
        if (!v.l1_[i0].getBit(i1)) continue;
        if (l2_[i0][i1].intersectsWith(v.l2_[i0][i1]))
          return true;
      }
    }
    return false;
  }

// for (TwoLevelBitVector<>::Iterator it(bv); it.hasNext();) {
  //   uptr idx = it.next();
  //   use(idx);
  // }
  class Iterator {
   public:
    Iterator() { }
    explicit Iterator(const TwoLevelBitVector &bv) : bv_(bv), i0_(0), i1_(0) {
      it1_.clear();
      it2_.clear();
    }

bool hasNext() const {
      if (it1_.hasNext()) return true;
      for (uptr i = i0_; i < kLevel1Size; i++)
        if (!bv_.l1_[i].empty()) return true;
      return false;
    }

uptr next() {
      // Printf("++++: %zd %zd; %d %d; size %zd\n", i0_, i1_, it1_.hasNext(),
      //       it2_.hasNext(), kSize);
      if (!it1_.hasNext() && !it2_.hasNext()) {
        for (; i0_ < kLevel1Size; i0_++) {
          if (bv_.l1_[i0_].empty()) continue;
          it1_ = typename BV::Iterator(bv_.l1_[i0_]);
          // Printf("+i0: %zd %zd; %d %d; size %zd\n", i0_, i1_, it1_.hasNext(),
          //   it2_.hasNext(), kSize);
          break;
        }
      }
      if (!it2_.hasNext()) {
        CHECK(it1_.hasNext());
        i1_ = it1_.next();
        it2_ = typename BV::Iterator(bv_.l2_[i0_][i1_]);
        // Printf("++i1: %zd %zd; %d %d; size %zd\n", i0_, i1_, it1_.hasNext(),
        //       it2_.hasNext(), kSize);
      }
      CHECK(it2_.hasNext());
      uptr i2 = it2_.next();
      uptr res = i0_ * BV::kSize * BV::kSize + i1_ * BV::kSize + i2;
      // Printf("+ret: %zd %zd; %d %d; size %zd; res: %zd\n", i0_, i1_,
      //       it1_.hasNext(), it2_.hasNext(), kSize, res);
      if (!it1_.hasNext() && !it2_.hasNext())
        i0_++;
      return res;
    }

private:
    const TwoLevelBitVector &bv_;
    uptr i0_, i1_;
    typename BV::Iterator it1_, it2_;
  };

private:
  void check(uptr idx) const { CHECK_LE(idx, size()); }

uptr idx0(uptr idx) const {
    uptr res = idx / (BV::kSize * BV::kSize);
    CHECK_LE(res, kLevel1Size);
    return res;
  }

uptr idx1(uptr idx) const {
    uptr res = (idx / BV::kSize) % BV::kSize;
    CHECK_LE(res, BV::kSize);
    return res;
  }

uptr idx2(uptr idx) const {
    uptr res = idx % BV::kSize;
    CHECK_LE(res, BV::kSize);
    return res;
  }

BV l1_[kLevel1Size];
  BV l2_[kLevel1Size][BV::kSize];
};

} // namespace __sanitizer

#endif // SANITIZER_BITVECTOR_H

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