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This includes the functions ExceptionBehaviorHasState(), ExceptionBehaviorHasIdentity(), ExceptionBehaviorHasMachExceptionCodes(), and ExceptionBehaviorBasic(). TEST=util_test R=rsesek@chromium.org Review URL: https://codereview.chromium.org/565793005
95 lines
4.2 KiB
C++
95 lines
4.2 KiB
C++
// Copyright 2014 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef CRASHPAD_UTIL_MACH_EXCEPTION_BEHAVIORS_H_
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#define CRASHPAD_UTIL_MACH_EXCEPTION_BEHAVIORS_H_
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#include <mach/mach.h>
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namespace crashpad {
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//! \brief Determines whether \a behavior indicates an exception behavior that
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//! carries thread state information.
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//!
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//! When this function returns `true`, an exception message of \a behavior will
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//! carry thread state information. Its \a flavor, \a old_state, \a
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//! old_state_count, \a new_state, and \a new_state_count fields will be valid.
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//! When this function returns `false`, these fields will not be valid.
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//!
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//! Exception behaviors that carry thread state information are
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//! `EXCEPTION_STATE` and `EXCEPTION_STATE_IDENTITY`. `MACH_EXCEPTION_CODES` may
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//! also be set. These behaviors correspond to `exception_raise_state()`,
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//! `exception_raise_state_identity()`, `mach_exception_raise_state()`, and
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//! `mach_exception_raise_state_identity()`.
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//!
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//! \param[in] behavior An exception behavior value.
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//!
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//! \return `true` if \a behavior is `EXCEPTION_STATE` or
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//! `EXCEPTION_STATE_IDENTITY`, possibly with `MACH_EXCEPTION_CODES` also
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//! set.
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bool ExceptionBehaviorHasState(exception_behavior_t behavior);
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//! \brief Determines whether \a behavior indicates an exception behavior that
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//! carries thread and task identities.
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//!
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//! When this function returns `true`, an exception message of \a behavior will
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//! carry thread and task identities in the form of send rights to the thread
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//! and task ports. Its \a thread and \a task fields will be valid. When this
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//! function returns `false`, these fields will not be valid.
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//!
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//! Exception behaviors that carry thread and task identity information are
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//! `EXCEPTION_DEFAULT` and `EXCEPTION_STATE_IDENTITY`. `MACH_EXCEPTION_CODES`
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//! may also be set. These behaviors correspond to `exception_raise()`,
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//! `exception_raise_state_identity()`, `mach_exception_raise()`, and
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//! `mach_exception_raise_state_identity()`.
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//!
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//! \param[in] behavior An exception behavior value.
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//!
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//! \return `true` if \a behavior is `EXCEPTION_DEFAULT` or
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//! `EXCEPTION_STATE_IDENTITY`, possibly with `MACH_EXCEPTION_CODES` also
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//! set.
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bool ExceptionBehaviorHasIdentity(exception_behavior_t behavior);
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//! \brief Determines whether \a behavior indicates an exception behavior that
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//! carries 64-bit exception codes (“Mach exception codes”).
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//!
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//! When this function returns `true`, an exception message of \a behavior will
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//! carry 64-bit exception codes of type `mach_exception_code_t` in its \a code
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//! field. When this function returns `false`, the exception message will carry
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//! 32-bit exception codes of type `exception_data_type_t` in its \a code field.
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//!
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//! Exception behaviors that carry 64-bit exception codes are those that have
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//! `MACH_EXCEPTION_CODES` set. These behaviors correspond to
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//! `mach_exception_raise()`, `mach_exception_raise_state()`, and
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//! `mach_exception_raise_state_identity()`.
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//!
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//! \param[in] behavior An exception behavior value.
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//!
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//! \return `true` if `MACH_EXCEPTION_CODES` is set in \a behavior.
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bool ExceptionBehaviorHasMachExceptionCodes(exception_behavior_t behavior);
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//! \brief Returns the basic behavior value of \a behavior, its value without
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//! `MACH_EXCEPTION_CODES` set.
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//!
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//! \param[in] behavior An exception behavior value.
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//!
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//! \return `EXCEPTION_DEFAULT`, `EXCEPTION_STATE`, or
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//! `EXCEPTION_STATE_IDENTITY`, assuming \a behavior was a correct exception
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//! behavior value.
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exception_behavior_t ExceptionBehaviorBasic(exception_behavior_t behavior);
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} // namespace crashpad
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#endif // CRASHPAD_UTIL_MACH_EXCEPTION_BEHAVIORS_H_
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