gecko-dev/toolkit/xre/MacLaunchHelper.mm

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Goodger <ben@mozilla.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozilla/Util.h"
#include "prtypes.h"
#include "MacLaunchHelper.h"
#include "nsMemory.h"
#include "nsAutoPtr.h"
#include "nsIAppStartup.h"
#include <stdio.h>
#include <spawn.h>
#include <crt_externs.h>
using namespace mozilla;
namespace {
cpu_type_t pref_cpu_types[2] = {
#if defined(__i386__)
CPU_TYPE_X86,
#elif defined(__x86_64__)
CPU_TYPE_X86_64,
#elif defined(__ppc__)
CPU_TYPE_POWERPC,
#endif
CPU_TYPE_ANY };
cpu_type_t cpu_i386_types[2] = {
CPU_TYPE_X86,
CPU_TYPE_ANY };
cpu_type_t cpu_x64_86_types[2] = {
CPU_TYPE_X86_64,
CPU_TYPE_ANY };
}
void LaunchChildMac(int aArgc, char** aArgv, PRUint32 aRestartType)
{
// "posix_spawnp" uses null termination for arguments rather than a count.
// Note that we are not duplicating the argument strings themselves.
nsAutoArrayPtr<char*> argv_copy(new char*[aArgc + 1]);
for (int i = 0; i < aArgc; i++) {
argv_copy[i] = aArgv[i];
}
argv_copy[aArgc] = NULL;
// Initialize spawn attributes.
posix_spawnattr_t spawnattr;
if (posix_spawnattr_init(&spawnattr) != 0) {
printf("Failed to init posix spawn attribute.");
return;
}
cpu_type_t *wanted_type = pref_cpu_types;
size_t attr_count = ArrayLength(pref_cpu_types);
if (aRestartType & nsIAppStartup::eRestarti386) {
wanted_type = cpu_i386_types;
attr_count = ArrayLength(cpu_i386_types);
} else if (aRestartType & nsIAppStartup::eRestartx86_64) {
wanted_type = cpu_x64_86_types;
attr_count = ArrayLength(cpu_x64_86_types);
}
// Set spawn attributes.
size_t attr_ocount = 0;
if (posix_spawnattr_setbinpref_np(&spawnattr, attr_count, wanted_type, &attr_ocount) != 0 ||
attr_ocount != attr_count) {
printf("Failed to set binary preference on posix spawn attribute.");
posix_spawnattr_destroy(&spawnattr);
return;
}
// Pass along our environment.
char** envp = NULL;
char*** cocoaEnvironment = _NSGetEnviron();
if (cocoaEnvironment) {
envp = *cocoaEnvironment;
}
int result = posix_spawnp(NULL, argv_copy[0], NULL, &spawnattr, argv_copy, envp);
posix_spawnattr_destroy(&spawnattr);
if (result != 0) {
printf("Process spawn failed with code %d!", result);
}
}