mono/mini/mini-windows.c

   1 /*
   2  * mini-posix.c: POSIX signal handling support for Mono.
   3  *
   4  * Authors:
   5  *   Mono Team (mono-list@lists.ximian.com)
   6  *
   7  * Copyright 2001-2003 Ximian, Inc.
   8  * Copyright 2003-2008 Ximian, Inc.
   9  *
  10  * See LICENSE for licensing information.
  11  */
  12 #include <config.h>
  13 #include <signal.h>
  14 #include <math.h>
  15
  16 #include <mono/metadata/assembly.h>
  17 #include <mono/metadata/loader.h>
  18 #include <mono/metadata/tabledefs.h>
  19 #include <mono/metadata/class.h>
  20 #include <mono/metadata/object.h>
  21 #include <mono/metadata/tokentype.h>
  22 #include <mono/metadata/tabledefs.h>
  23 #include <mono/metadata/threads.h>
  24 #include <mono/metadata/appdomain.h>
  25 #include <mono/metadata/debug-helpers.h>
  26 #include <mono/io-layer/io-layer.h>
  27 #include "mono/metadata/profiler.h"
  28 #include <mono/metadata/profiler-private.h>
  29 #include <mono/metadata/mono-config.h>
  30 #include <mono/metadata/environment.h>
  31 #include <mono/metadata/mono-debug.h>
  32 #include <mono/metadata/gc-internal.h>
  33 #include <mono/metadata/threads-types.h>
  34 #include <mono/metadata/verify.h>
  35 #include <mono/metadata/verify-internals.h>
  36 #include <mono/metadata/mempool-internals.h>
  37 #include <mono/metadata/attach.h>
  38 #include <mono/utils/mono-math.h>
  39 #include <mono/utils/mono-compiler.h>
  40 #include <mono/utils/mono-counters.h>
  41 #include <mono/utils/mono-logger-internal.h>
  42 #include <mono/utils/mono-mmap.h>
  43 #include <mono/utils/dtrace.h>
  44
  45 #include "mini.h"
  46 #include <string.h>
  47 #include <ctype.h>
  48 #include "trace.h"
  49 #include "version.h"
  50
  51 #include "jit-icalls.h"
  52
  53 extern LPTOP_LEVEL_EXCEPTION_FILTER mono_old_win_toplevel_exception_filter;
  54 extern guint64 mono_win_chained_exception_filter_result;
  55 extern gboolean mono_win_chained_exception_filter_didrun;
  56
  57 void
  58 mono_runtime_install_handlers (void)
  59 {
  60 #ifndef MONO_CROSS_COMPILE
  61         win32_seh_init();
  62         win32_seh_set_handler(SIGFPE, mono_sigfpe_signal_handler);
  63         win32_seh_set_handler(SIGILL, mono_sigill_signal_handler);
  64         win32_seh_set_handler(SIGSEGV, mono_sigsegv_signal_handler);
  65         if (mini_get_debug_options ()->handle_sigint)
  66                 win32_seh_set_handler(SIGINT, mono_sigint_signal_handler);
  67 #endif
  68 }
  69
  70 void
  71 mono_runtime_cleanup_handlers (void)
  72 {
  73 #ifndef MONO_CROSS_COMPILE
  74         win32_seh_cleanup();
  75 #endif
  76 }
  77
  78
  79 /* mono_chain_signal:
  80  *
  81  *   Call the original signal handler for the signal given by the arguments, which
  82  * should be the same as for a signal handler. Returns TRUE if the original handler
  83  * was called, false otherwise.
  84  */
  85 gboolean
  86 SIG_HANDLER_SIGNATURE (mono_chain_signal)
  87 {
  88         int signal = _dummy;
  89         GET_CONTEXT;
  90
  91         if (mono_old_win_toplevel_exception_filter) {
  92                 mono_win_chained_exception_filter_didrun = TRUE;
  93                 mono_win_chained_exception_filter_result = (*mono_old_win_toplevel_exception_filter)(info);
  94                 return TRUE;
  95         }
  96         return FALSE;
  97 }
  98
  99 static HANDLE win32_main_thread;
 100 static MMRESULT win32_timer;
 101
 102 static void CALLBACK
 103 win32_time_proc (UINT uID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
 104 {
 105         CONTEXT context;
 106
 107         context.ContextFlags = CONTEXT_CONTROL;
 108         if (GetThreadContext (win32_main_thread, &context)) {
 109 #ifdef _WIN64
 110                 mono_profiler_stat_hit ((guchar *) context.Rip, &context);
 111 #else
 112                 mono_profiler_stat_hit ((guchar *) context.Eip, &context);
 113 #endif
 114         }
 115 }
 116
 117 void
 118 mono_runtime_setup_stat_profiler (void)
 119 {
 120         static int inited = 0;
 121         TIMECAPS timecaps;
 122
 123         if (inited)
 124                 return;
 125
 126         inited = 1;
 127         if (timeGetDevCaps (&timecaps, sizeof (timecaps)) != TIMERR_NOERROR)
 128                 return;
 129
 130         if ((win32_main_thread = OpenThread (READ_CONTROL | THREAD_GET_CONTEXT, FALSE, GetCurrentThreadId ())) == NULL)
 131                 return;
 132
 133         if (timeBeginPeriod (1) != TIMERR_NOERROR)
 134                 return;
 135
 136         if ((win32_timer = timeSetEvent (1, 0, win32_time_proc, 0, TIME_PERIODIC)) == 0) {
 137                 timeEndPeriod (1);
 138                 return;
 139         }
 140 }
 141
 142 void
 143 mono_runtime_shutdown_stat_profiler (void)
 144 {
 145 }
 146
 147 gboolean
 148 mono_thread_state_init_from_handle (MonoThreadUnwindState *tctx, MonoNativeThreadId thread_id, MonoNativeThreadHandle thread_handle)
 149 {
 150         g_error ("Windows systems haven't been ported to support mono_thread_state_init_from_handle");
 151         return FALSE;
 152 }
 153