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//
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//
/*++
Module Name:
include/pal/seh.hpp
Abstract:
Header file for public Structured Exception Handling stuff
--*/
#ifndef _PAL_SEH_HPP_
#define _PAL_SEH_HPP_
#include "config.h"
#include "pal/palinternal.h"
#include "pal/corunix.hpp"
// Uncomment this define to turn off the signal handling thread.
// #define DO_NOT_USE_SIGNAL_HANDLING_THREAD
/*++
Function :
SEHInitialize
Initialize all SEH-related stuff (signals, etc)
Parameters:
CPalThread * pthrCurrent : reference to the current thread.
flags : PAL initialize flags
Return value:
TRUE if SEH support initialization succeeded,
FALSE otherwise
--*/
BOOL
SEHInitialize(CorUnix::CPalThread *pthrCurrent, DWORD flags);
/*++
Function :
SEHCleanup
Clean up SEH-related stuff(signals, etc)
Parameters:
None
(no return value)
--*/
VOID
SEHCleanup();
/*++
Function:
SEHProcessException
Build the PAL exception and sent it to any handler registered.
Parameters:
None
Return value:
Does not return
--*/
VOID
SEHProcessException(PEXCEPTION_POINTERS pointers);
#if !HAVE_MACH_EXCEPTIONS
// TODO: Implement for Mach exceptions. Not in CoreCLR surface area.
/*++
Function :
SEHHandleControlEvent
handle Control-C and Control-Break events (call handler routines,
notify debugger)
Parameters :
DWORD event : event that occurred
LPVOID eip : instruction pointer when exception occurred
(no return value)
Notes :
Handlers are called on a last-installed, first called basis, until a
handler returns TRUE. If no handler returns TRUE (or no hanlder is
installed), the default behavior is to call ExitProcess
--*/
void SEHHandleControlEvent(DWORD event, LPVOID eip);
#endif // !HAVE_MACH_EXCEPTIONS
#if !HAVE_MACH_EXCEPTIONS
/*++
Function :
SEHSetSafeState
specify whether the current thread is in a state where exception handling
of signals can be done safely
Parameters:
CPalThread * pthrCurrent : reference to the current thread.
BOOL state : TRUE if the thread is safe, FALSE otherwise
(no return value)
--*/
void SEHSetSafeState(CorUnix::CPalThread *pthrCurrent, BOOL state);
/*++
Function :
SEHGetSafeState
determine whether the current thread is in a state where exception handling
of signals can be done safely
Parameters:
CPalThread * pthrCurrent : reference to the current thread.
Return value :
TRUE if the thread is in a safe state, FALSE otherwise
--*/
BOOL SEHGetSafeState(CorUnix::CPalThread *pthrCurrent);
#endif // !HAVE_MACH_EXCEPTIONS
extern "C"
{
#ifdef FEATURE_PAL_SXS
/*++
Function :
SEHEnable
Enable SEH-related stuff on this thread
Parameters:
CPalThread * pthrCurrent : reference to the current thread.
Return value :
ERROR_SUCCESS, if enabling succeeded
an error code, otherwise
--*/
CorUnix::PAL_ERROR SEHEnable(CorUnix::CPalThread *pthrCurrent);
/*++
Function :
SEHDisable
Disable SEH-related stuff on this thread
Parameters:
CPalThread * pthrCurrent : reference to the current thread.
Return value :
ERROR_SUCCESS, if enabling succeeded
an error code, otherwise
--*/
CorUnix::PAL_ERROR SEHDisable(CorUnix::CPalThread *pthrCurrent);
#endif // FEATURE_PAL_SXS
}
#endif /* _PAL_SEH_HPP_ */
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