src/win32.cc

   1 /*
   2  * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* Inspired by previous work by Romeo Anghelache & Eric Stern. */
  10
  11 #include "squid.h"
  12
  13 #if _SQUID_WINDOWS_
  14
  15 #include "fde.h"
  16 #include "win32.h"
  17
  18 #include <csignal>
  19 #if HAVE_WIN32_PSAPI
  20 #include <psapi.h>
  21 #endif
  22 #if HAVE_MSWSOCK_H
  23 #include <mswsock.h>
  24 #endif
  25
  26 SQUIDCEXTERN LPCRITICAL_SECTION dbg_mutex;
  27 void WIN32_ExceptionHandlerCleanup(void);
  28 static LPTOP_LEVEL_EXCEPTION_FILTER Win32_Old_ExceptionHandler = NULL;
  29
  30 int
  31 Win32__WSAFDIsSet(int fd, fd_set FAR * set)
  32 {
  33     fde *F = &fd_table[fd];
  34     SOCKET s = F->win32.handle;
  35
  36     return __WSAFDIsSet(s, set);
  37 }
  38
  39 LONG CALLBACK WIN32_ExceptionHandler(EXCEPTION_POINTERS* ep)
  40 {
  41     EXCEPTION_RECORD* er;
  42
  43     er = ep->ExceptionRecord;
  44
  45     switch (er->ExceptionCode) {
  46
  47     case EXCEPTION_ACCESS_VIOLATION:
  48         raise(SIGSEGV);
  49         break;
  50
  51     case EXCEPTION_DATATYPE_MISALIGNMENT:
  52
  53     case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
  54
  55     case EXCEPTION_IN_PAGE_ERROR:
  56         raise(SIGBUS);
  57         break;
  58
  59     default:
  60         break;
  61     }
  62
  63     return EXCEPTION_CONTINUE_SEARCH;
  64 }
  65
  66 void WIN32_ExceptionHandlerInit()
  67 {
  68 #if !defined(_DEBUG)
  69
  70     if (Win32_Old_ExceptionHandler == NULL)
  71         Win32_Old_ExceptionHandler = SetUnhandledExceptionFilter(WIN32_ExceptionHandler);
  72
  73 #endif
  74 }
  75
  76 void WIN32_ExceptionHandlerCleanup()
  77 {
  78     if (Win32_Old_ExceptionHandler != NULL)
  79         SetUnhandledExceptionFilter(Win32_Old_ExceptionHandler);
  80 }
  81
  82 #endif /* SQUID_WINDOWS_ */
  83