shell/avmshellMac.cpp

   1 /* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */
   2 /* vi: set ts=4 sw=4 expandtab: (add to ~/.vimrc: set modeline modelines=5) */
   3 /* ***** BEGIN LICENSE BLOCK *****
   4 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version
   7 * 1.1 (the "License"); you may not use this file except in compliance with
   8 * the License. You may obtain a copy of the License at
   9 * http://www.mozilla.org/MPL/
  10 *
  11 * Software distributed under the License is distributed on an "AS IS" basis,
  12 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13 * for the specific language governing rights and limitations under the
  14 * License.
  15 *
  16 * The Original Code is [Open Source Virtual Machine.].
  17 *
  18 * The Initial Developer of the Original Code is
  19 * Adobe System Incorporated.
  20 * Portions created by the Initial Developer are Copyright (C) 2004-2006
  21 * the Initial Developer. All Rights Reserved.
  22 *
  23 * Contributor(s):
  24 *   Adobe AS3 Team
  25 *
  26 * Alternatively, the contents of this file may be used under the terms of
  27 * either the GNU General Public License Version 2 or later (the "GPL"), or
  28 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29 * in which case the provisions of the GPL or the LGPL are applicable instead
  30 * of those above. If you wish to allow use of your version of this file only
  31 * under the terms of either the GPL or the LGPL, and not to allow others to
  32 * use your version of this file under the terms of the MPL, indicate your
  33 * decision by deleting the provisions above and replace them with the notice
  34 * and other provisions required by the GPL or the LGPL. If you do not delete
  35 * the provisions above, a recipient may use your version of this file under
  36 * the terms of any one of the MPL, the GPL or the LGPL.
  37 *
  38 * ***** END LICENSE BLOCK ***** */
  39
  40 //mac
  41
  42 #include "avmshell.h"
  43 #include "PosixPartialPlatform.h"
  44
  45 #include <sys/signal.h>
  46 #include <unistd.h>
  47 #include <sys/resource.h>
  48
  49 namespace avmshell
  50 {
  51     class MacPlatform : public PosixPartialPlatform
  52     {
  53     public:
  54         MacPlatform(void* stackbase) : stackbase(stackbase) {}
  55         virtual ~MacPlatform() {}
  56
  57         virtual void setTimer(int seconds, AvmTimerCallback callback, void* callbackData);
  58         virtual uintptr_t getMainThreadStackLimit();
  59
  60     private:
  61         void* stackbase;
  62     };
  63
  64     uintptr_t MacPlatform::getMainThreadStackLimit()
  65     {
  66         struct rlimit r;
  67         size_t stackheight = avmshell::kStackSizeFallbackValue;
  68         // https://bugzilla.mozilla.org/show_bug.cgi?id=504976: setting the height to kStackSizeFallbackValue
  69         // is not ideal if the stack is meant to be unlimited but is an OK workaround for the time being.
  70         if (getrlimit(RLIMIT_STACK, &r) == 0 && r.rlim_cur != RLIM_INFINITY)
  71             stackheight = size_t(r.rlim_cur);
  72         return uintptr_t(stackbase) - stackheight + avmshell::kStackMargin;
  73     }
  74
  75     AvmTimerCallback pCallbackFunc = 0;
  76     void* pCallbackData = 0;
  77
  78     void MacPlatform::setTimer(int seconds, AvmTimerCallback callback, void* callbackData)
  79     {
  80         extern void alarmProc(int);
  81
  82         pCallbackFunc = callback;
  83         pCallbackData = callbackData;
  84
  85         signal(SIGALRM, alarmProc);
  86         alarm(seconds);
  87
  88     }
  89
  90     void alarmProc(int /*signum*/)
  91     {
  92         pCallbackFunc(pCallbackData);
  93     }
  94 }
  95
  96 avmshell::MacPlatform* gPlatformHandle = NULL;
  97
  98 avmshell::Platform* avmshell::Platform::GetInstance()
  99 {
 100     AvmAssert(gPlatformHandle != NULL);
 101     return gPlatformHandle;
 102 }
 103
 104 int main(int argc, char *argv[])
 105 {
 106 #ifdef AVMPLUS_MACH_EXCEPTIONS
 107     GenericGuard::staticInit();
 108 #endif
 109
 110     char* dummy;
 111     avmshell::MacPlatform platformInstance(&dummy);
 112     gPlatformHandle = &platformInstance;
 113
 114     int code = avmshell::Shell::run(argc, argv);
 115     if (code == avmshell::OUT_OF_MEMORY)
 116         write(1, "OUT OF MEMORY\n", 14);
 117
 118 #ifdef AVMPLUS_MACH_EXCEPTIONS
 119     GenericGuard::staticDestroy();
 120 #endif
 121
 122     return code;
 123 }