Libsanitizer merge from trunk r368656.

[thirdparty/gcc.git] / libsanitizer / sanitizer_common / sanitizer_suppressions.h

//===-- sanitizer_suppressions.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
//
//===----------------------------------------------------------------------===//
//
// Suppression parsing/matching code.
//
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_SUPPRESSIONS_H
#define SANITIZER_SUPPRESSIONS_H

#include "sanitizer_common.h"
#include "sanitizer_atomic.h"
#include "sanitizer_internal_defs.h"

namespace __sanitizer {

struct Suppression {
  Suppression() { internal_memset(this, 0, sizeof(*this)); }
  const char *type;
  char *templ;
  atomic_uint32_t hit_count;
  uptr weight;
};

class SuppressionContext {
 public:
  // Create new SuppressionContext capable of parsing given suppression types.
  SuppressionContext(const char *supprression_types[],
                     int suppression_types_num);

  void ParseFromFile(const char *filename);
  void Parse(const char *str);

  bool Match(const char *str, const char *type, Suppression **s);
  uptr SuppressionCount() const;
  bool HasSuppressionType(const char *type) const;
  const Suppression *SuppressionAt(uptr i) const;
  void GetMatched(InternalMmapVector<Suppression *> *matched);

 private:
  static const int kMaxSuppressionTypes = 32;
  const char **const suppression_types_;
  const int suppression_types_num_;

  InternalMmapVector<Suppression> suppressions_;
  bool has_suppression_type_[kMaxSuppressionTypes];
  bool can_parse_;
};

}  // namespace __sanitizer

#endif  // SANITIZER_SUPPRESSIONS_H