win32.cc

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/*
 * Copyright (C) 1996-2023 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
/* Inspired by previous work by Romeo Anghelache & Eric Stern. */
 
#include "squid.h"
 
#if _SQUID_WINDOWS_
 
#include "fde.h"
#include "win32.h"
 
#include <csignal>
#if HAVE_PSAPI_H
#include <psapi.h>
#endif
#if HAVE_MSWSOCK_H
#include <mswsock.h>
#endif
 
SQUIDCEXTERN LPCRITICAL_SECTION dbg_mutex;
void WIN32_ExceptionHandlerCleanup(void);
static LPTOP_LEVEL_EXCEPTION_FILTER Win32_Old_ExceptionHandler = nullptr;
 
int
Win32__WSAFDIsSet(int fd, fd_set FAR * set)
{
    fde *F = &fd_table[fd];
    SOCKET s = F->win32.handle;
 
    return __WSAFDIsSet(s, set);
}
 
LONG CALLBACK WIN32_ExceptionHandler(EXCEPTION_POINTERS* ep)
{
    EXCEPTION_RECORD* er;
 
    er = ep->ExceptionRecord;
 
    switch (er->ExceptionCode) {
 
    case EXCEPTION_ACCESS_VIOLATION:
        raise(SIGSEGV);
        break;
 
    case EXCEPTION_DATATYPE_MISALIGNMENT:
 
    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
 
    case EXCEPTION_IN_PAGE_ERROR:
        raise(SIGBUS);
        break;
 
    default:
        break;
    }
 
    return EXCEPTION_CONTINUE_SEARCH;
}
 
void WIN32_ExceptionHandlerInit()
{
#if !defined(_DEBUG)
 
    if (Win32_Old_ExceptionHandler == NULL)
        Win32_Old_ExceptionHandler = SetUnhandledExceptionFilter(WIN32_ExceptionHandler);
 
#endif
}
 
void WIN32_ExceptionHandlerCleanup()
{
    if (Win32_Old_ExceptionHandler != NULL)
        SetUnhandledExceptionFilter(Win32_Old_ExceptionHandler);
}
 
#endif /* SQUID_WINDOWS_ */