Add ThreadSnapshotMac

snapshot/thread_snapshot_mac.h

Index: snapshot/thread_snapshot_mac.h
diff --git a/snapshot/thread_snapshot_mac.h b/snapshot/thread_snapshot_mac.h
new file mode 100644
index 0000000000000000000000000000000000000000..dc6c5b9920bb4bc16d5b9246b02d10cfa23ebedd
--- /dev/null
+++ b/snapshot/thread_snapshot_mac.h
@@ -0,0 +1,85 @@
+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// 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.
+
+#ifndef CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_MAC_H_
+#define CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_MAC_H_
+
+#include <mach/mach.h>
+#include <stdint.h>
+
+#include "base/basictypes.h"
+#include "build/build_config.h"
+#include "snapshot/cpu_context.h"
+#include "snapshot/memory_snapshot.h"
+#include "snapshot/memory_snapshot_mac.h"
+#include "snapshot/thread_snapshot.h"
+#include "util/misc/initialization_state_dcheck.h"
+
+namespace crashpad {
+
+class ProcessReader;
+
+namespace internal {
+
+//! \brief A ThreadSnapshot of a thread in a running (or crashed) process on a
+//!     Mac OS X system.
+class ThreadSnapshotMac final : public ThreadSnapshot {
+ public:
+  ThreadSnapshotMac();
+  ~ThreadSnapshotMac();
+
+  //! \brief Initializes the object.
+  //!
+  //! \param[in] process_reader A ProcessReader for the task containing the
+  //!     thread.
+  //! \param[in] process_reader_thread The thread within the ProcessReader that
+  //!     for which the snapshot should be created.
+  //!
+  //! \return `true` if the snapshot could be created, `false` otherwise with
+  //!     an appropriate message logged.
+  bool Initialize(ProcessReader* process_reader,
+                  const ProcessReader::Thread& process_reader_thread);
+
+  // ThreadSnapshot:
+
+  virtual const CPUContext* Context() const override;
+  virtual const MemorySnapshot* Stack() const override;
+  virtual uint64_t ThreadID() const override;
+  virtual int SuspendCount() const override;
+  virtual int Priority() const override;
+  virtual uint64_t ThreadSpecificDataAddress() const override;
+
+ private:
+#if defined(ARCH_CPU_X86_FAMILY)
+  union {
+    CPUContextX86 x86;
+    CPUContextX86_64 x86_64;
+  } context_union_;
+#endif
+  CPUContext context_;
+  MemorySnapshotMac stack_;
+  uint64_t thread_id_;
+  uint64_t thread_specific_data_address_;
+  thread_t thread_;
+  int suspend_count_;
+  int priority_;
+  InitializationStateDcheck initialized_;
+
+  DISALLOW_COPY_AND_ASSIGN(ThreadSnapshotMac);
+};
+
+}  // namespace internal
+}  // namespace crashpad
+
+#endif  // CRASHPAD_SNAPSHOT_THREAD_SNAPSHOT_MAC_H_