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third_party/crashpad/crashpad/util/mach/exc_client_variants.h

Index: third_party/crashpad/crashpad/util/mach/exc_client_variants.h
diff --git a/third_party/crashpad/crashpad/util/mach/exc_client_variants.h b/third_party/crashpad/crashpad/util/mach/exc_client_variants.h
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+// 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_UTIL_MACH_EXC_CLIENT_VARIANTS_H_
+#define CRASHPAD_UTIL_MACH_EXC_CLIENT_VARIANTS_H_
+
+#include <mach/mach.h>
+
+#include "util/mach/mach_extensions.h"
+
+namespace crashpad {
+
+//! \brief Calls the appropriate `*exception_raise*()` function for the
+//!     specified \a behavior.
+//!
+//! The function called will be `exception_raise()` for `EXCEPTION_DEFAULT`,
+//! `exception_raise_state()` for `EXCEPTION_STATE`, or
+//! `exception_raise_state_identity()` for `EXCEPTION_STATE_IDENTITY`. If
+//! `MACH_EXCEPTION_CODES` is also set, the function called will instead be
+//! `mach_exception_raise()`, `mach_exception_raise_state()` or
+//! `mach_exception_raise_state_identity()`, respectively.
+//!
+//! This function does not fetch the existing thread state for \a behavior
+//! values that require a thread state. The caller must provide the existing
+//! thread state in the \a flavor, \a old_state, and \a old_state_count
+//! parameters for \a behavior values that require a thread state. Thread states
+//! may be obtained by calling `thread_get_state()` if needed. Similarly, this
+//! function does not do anything with the new thread state returned for these
+//! \a behavior values. Callers that wish to make use of the new thread state
+//! may do so by using the returned \a flavor, \a new_state, and \a
+//! new_state_count values. Thread states may be set by calling
+//! `thread_set_state()` if needed.
+//!
+//! \a thread and \a task are only used when \a behavior indicates that the
+//! exception message will carry identity information, when it has the value
+//! value `EXCEPTION_DEFAULT` or `EXCEPTION_STATE_IDENTITY`, possibly with
+//! `MACH_EXCEPTION_CODES` also set. In other cases, these parameters are unused
+//! and may be set to `THREAD_NULL` and `TASK_NULL`, respectively.
+//!
+//! \a flavor, \a old_state, \a old_state_count, \a new_state, and \a
+//! new_state_count are only used when \a behavior indicates that the exception
+//! message will carry thread state information, when it has the value
+//! `EXCEPTION_STATE` or `EXCEPTION_STATE_IDENTITY`, possibly with
+//! `MACH_EXCEPTION_CODES` also set. In other cases, these parameters are unused
+//! and may be set to `0` (\a old_state_count) or `nullptr` (the remaining
+//! parameters).
+//!
+//! \param[in] behavior The exception behavior, which dictates which function
+//!     will be called. It is an error to call this function with an invalid
+//!     value for \a behavior.
+//! \param[in] code If \behavior indicates a behavior without
+//!     `MACH_EXCEPTION_CODES`, the elements of \a code will be truncated in
+//!     order to be passed to the appropriate exception handler.
+//!
+//! All other parameters are treated equivalently to their treatment by the
+//! `*exception_raise*()` family of functions.
+//!
+//! \return The return value of the function called.
+kern_return_t UniversalExceptionRaise(exception_behavior_t behavior,
+                                      exception_handler_t exception_port,
+                                      thread_t thread,
+                                      task_t task,
+                                      exception_type_t exception,
+                                      const mach_exception_data_type_t* code,
+                                      mach_msg_type_number_t code_count,
+                                      thread_state_flavor_t* flavor,
+                                      ConstThreadState old_state,
+                                      mach_msg_type_number_t old_state_count,
+                                      thread_state_t new_state,
+                                      mach_msg_type_number_t* new_state_count);
+
+}  // namespace crashpad
+
+#endif  // CRASHPAD_UTIL_MACH_EXC_CLIENT_VARIANTS_H_