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/* except.h -*-C++-*-
*
*************************************************************************
*
* Copyright (C) 2009-2016, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
* WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* *********************************************************************
*
* PLEASE NOTE: This file is a downstream copy of a file mainitained in
* a repository at cilkplus.org. Changes made to this file that are not
* submitted through the contribution process detailed at
* http://www.cilkplus.org/submit-cilk-contribution will be lost the next
* time that a new version is released. Changes only submitted to the
* GNU compiler collection or posted to the git repository at
* https://bitbucket.org/intelcilkruntime/intel-cilk-runtime.git are
* not tracked.
*
* We welcome your contributions to this open source project. Thank you
* for your assistance in helping us improve Cilk Plus.
**************************************************************************/
/**
* @file except.h
*
* @brief Common definitions for the various implementations of exception
* handling.
*/
#ifndef INCLUDED_EXCEPT_DOT_H
#define INCLUDED_EXCEPT_DOT_H
#include <cilk/common.h>
#include <internal/abi.h>
#include "full_frame.h"
__CILKRTS_BEGIN_EXTERN_C
/**
* OS-dependent information about an exception that's being moved between
* strands.
*/
typedef struct pending_exception_info pending_exception_info;
/**
* Merge the right exception record into the left. The left is logically
* earlier.
*
* On entry the left state is synched and can not have an unresolved
* exception. The merge may result in an unresolved exception.
*
* If there is both a right and left exception, the right exception will
* be disposed of in preference to the left exception, destructing the
* exception object.
*
* @param w The worker that is preparing to resume execution.
* @param left_exception The exception that would have happened earlier
* if the code executed serially. Can be NULL if the left strand has not
* raised an exception.
* @param right_exception The exception that would have happened later
* if the code executed serially. Can be NULL if the right strand has not
* raised an exception.
*
* @return NULL if there both the right and left exception are NULL. This
* indicates that there are no pending exceptions.
* @return The pending exception that is to be raised to continue searching
* for a catch block to handle the exception.
*/
COMMON_SYSDEP
struct pending_exception_info *__cilkrts_merge_pending_exceptions(
__cilkrts_worker *w,
pending_exception_info *left_exception,
pending_exception_info *right_exception);
/**
* Move the exception information from the worker to the full_frame.
*
* @param w The worker which is suspending work on a full_frame.
* @param ff The full_frame which is being suspended.
*/
COMMON_SYSDEP
void __cilkrts_save_exception_state(__cilkrts_worker *w,
full_frame *ff);
/**
* Function to delete pending exception. This will delete the
* exception object and then free the stack/fiber.
*
* @param w The worker we're running on.
* @param pei The pending exception to be delete
* @param delete_object Unused. Should always be 1.
*/
void delete_exception_obj (__cilkrts_worker *w,
struct pending_exception_info *pei,
int delete_object);
#ifndef _WIN32
/* gcc-style exception handling */
NON_COMMON NORETURN __cilkrts_c_sync_except(__cilkrts_worker *w,
__cilkrts_stack_frame *sf);
NON_COMMON void __attribute__((nonnull))
__cilkrts_gcc_rethrow(__cilkrts_stack_frame *sf);
#endif
__CILKRTS_END_EXTERN_C
#endif // ! defined(INCLUDED_EXCEPT_DOT_H)
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