1/*
2 * ptw32_throw.c
3 *
4 * Description:
5 * This translation unit implements routines which are private to
6 * the implementation and may be used throughout it.
7 *
8 * --------------------------------------------------------------------------
9 *
10 *      Pthreads-win32 - POSIX Threads Library for Win32
11 *      Copyright(C) 1998 John E. Bossom
12 *      Copyright(C) 1999,2005 Pthreads-win32 contributors
13 *
14 *      Contact Email: rpj@callisto.canberra.edu.au
15 *
16 *      The current list of contributors is contained
17 *      in the file CONTRIBUTORS included with the source
18 *      code distribution. The list can also be seen at the
19 *      following World Wide Web location:
20 *      http://sources.redhat.com/pthreads-win32/contributors.html
21 *
22 *      This library is free software; you can redistribute it and/or
23 *      modify it under the terms of the GNU Lesser General Public
24 *      License as published by the Free Software Foundation; either
25 *      version 2 of the License, or (at your option) any later version.
26 *
27 *      This library is distributed in the hope that it will be useful,
28 *      but WITHOUT ANY WARRANTY; without even the implied warranty of
29 *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
30 *      Lesser General Public License for more details.
31 *
32 *      You should have received a copy of the GNU Lesser General Public
33 *      License along with this library in the file COPYING.LIB;
34 *      if not, write to the Free Software Foundation, Inc.,
35 *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
36 */
37
38#include "pthread.h"
39#include "implement.h"
40
41#if defined(__CLEANUP_C)
42# include <setjmp.h>
43#endif
44
45/*
46 * ptw32_throw
47 *
48 * All canceled and explicitly exited POSIX threads go through
49 * here. This routine knows how to exit both POSIX initiated threads and
50 * 'implicit' POSIX threads for each of the possible language modes (C,
51 * C++, and SEH).
52 */
53#if defined(_MSC_VER)
54/*
55 * Ignore the warning:
56 * "C++ exception specification ignored except to indicate that
57 * the function is not __declspec(nothrow)."
58 */
59#pragma warning(disable:4290)
60#endif
61void
62ptw32_throw (DWORD exception)
63#if defined(__CLEANUP_CXX)
64  throw(ptw32_exception_cancel,ptw32_exception_exit)
65#endif
66{
67  /*
68   * Don't use pthread_self() to avoid creating an implicit POSIX thread handle
69   * unnecessarily.
70   */
71  ptw32_thread_t * sp = (ptw32_thread_t *) pthread_getspecific (ptw32_selfThreadKey);
72
73#if defined(__CLEANUP_SEH)
74  DWORD exceptionInformation[3];
75#endif
76
77  sp->state = PThreadStateExiting;
78
79  if (exception != PTW32_EPS_CANCEL && exception != PTW32_EPS_EXIT)
80    {
81      /* Should never enter here */
82      exit (1);
83    }
84
85  if (NULL == sp || sp->implicit)
86    {
87      /*
88       * We're inside a non-POSIX initialised Win32 thread
89       * so there is no point to jump or throw back to. Just do an
90       * explicit thread exit here after cleaning up POSIX
91       * residue (i.e. cleanup handlers, POSIX thread handle etc).
92       */
93#if ! (defined(__MINGW64__) || defined(__MINGW32__)) || defined (__MSVCRT__) || defined (__DMC__)
94      unsigned exitCode = 0;
95
96      switch (exception)
97	{
98	case PTW32_EPS_CANCEL:
99	  exitCode = (unsigned)(size_t) PTHREAD_CANCELED;
100	  break;
101	case PTW32_EPS_EXIT:
102	  if (NULL != sp)
103	    {
104	      exitCode = (unsigned)(size_t) sp->exitStatus;
105	    }
106	  break;
107	}
108#endif
109
110#if defined(PTW32_STATIC_LIB)
111
112      pthread_win32_thread_detach_np ();
113
114#endif
115
116#if ! (defined(__MINGW64__) || defined(__MINGW32__)) || defined (__MSVCRT__) || defined (__DMC__)
117      _endthreadex (exitCode);
118#else
119      _endthread ();
120#endif
121
122    }
123
124#if defined(__CLEANUP_SEH)
125
126
127  exceptionInformation[0] = (DWORD) (exception);
128  exceptionInformation[1] = (DWORD) (0);
129  exceptionInformation[2] = (DWORD) (0);
130
131  RaiseException (EXCEPTION_PTW32_SERVICES, 0, 3, exceptionInformation);
132
133#else /* __CLEANUP_SEH */
134
135#if defined(__CLEANUP_C)
136
137  ptw32_pop_cleanup_all (1);
138  longjmp (sp->start_mark, exception);
139
140#else /* __CLEANUP_C */
141
142#if defined(__CLEANUP_CXX)
143
144  switch (exception)
145    {
146    case PTW32_EPS_CANCEL:
147      throw ptw32_exception_cancel ();
148      break;
149    case PTW32_EPS_EXIT:
150      throw ptw32_exception_exit ();
151      break;
152    }
153
154#else
155
156#error ERROR [__FILE__, line __LINE__]: Cleanup type undefined.
157
158#endif /* __CLEANUP_CXX */
159
160#endif /* __CLEANUP_C */
161
162#endif /* __CLEANUP_SEH */
163
164  /* Never reached */
165}
166
167
168void
169ptw32_pop_cleanup_all (int execute)
170{
171  while (NULL != ptw32_pop_cleanup (execute))
172    {
173    }
174}
175
176
177DWORD
178ptw32_get_exception_services_code (void)
179{
180#if defined(__CLEANUP_SEH)
181
182  return EXCEPTION_PTW32_SERVICES;
183
184#else
185
186  return (DWORD)0;
187
188#endif
189}
190