Merge pull request #23529 from alexrp/2879-groundwork

Introduce libzigc for libc function implementations in Zig

1 files changed, 56 insertions, 0 deletions

diff --git a/lib/libtsan/sanitizer_common/sanitizer_suppressions.h b/lib/libtsan/sanitizer_common/sanitizer_suppressions.h
new file mode 100644
index 0000000000..2d88b1f72f
--- /dev/null
+++ b/lib/libtsan/sanitizer_common/sanitizer_suppressions.h
@@ -0,0 +1,56 @@
+//===-- 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 = 64;
+  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