| 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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| 2 | *
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| 3 | * ***** BEGIN LICENSE BLOCK *****
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| 4 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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| 5 | *
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| 6 | * The contents of this file are subject to the Mozilla Public License Version
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| 7 | * 1.1 (the "License"); you may not use this file except in compliance with
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| 8 | * the License. You may obtain a copy of the License at
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| 9 | * http://www.mozilla.org/MPL/
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| 10 | *
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| 11 | * Software distributed under the License is distributed on an "AS IS" basis,
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| 12 | * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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| 13 | * for the specific language governing rights and limitations under the
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| 14 | * License.
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| 15 | *
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| 16 | * The Original Code is the Mozilla browser.
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| 17 | *
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| 18 | * The Initial Developer of the Original Code is
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| 19 | * Netscape Communications, Inc.
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| 20 | * Portions created by the Initial Developer are Copyright (C) 1999
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| 21 | * the Initial Developer. All Rights Reserved.
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| 22 | *
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| 23 | * Contributor(s):
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| 24 | * Patrick Beard <[email protected]>
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| 25 | *
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| 26 | * Alternatively, the contents of this file may be used under the terms of
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| 27 | * either of the GNU General Public License Version 2 or later (the "GPL"),
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| 28 | * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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| 29 | * in which case the provisions of the GPL or the LGPL are applicable instead
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| 30 | * of those above. If you wish to allow use of your version of this file only
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| 31 | * under the terms of either the GPL or the LGPL, and not to allow others to
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| 32 | * use your version of this file under the terms of the MPL, indicate your
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| 33 | * decision by deleting the provisions above and replace them with the notice
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| 34 | * and other provisions required by the GPL or the LGPL. If you do not delete
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| 35 | * the provisions above, a recipient may use your version of this file under
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| 36 | * the terms of any one of the MPL, the GPL or the LGPL.
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| 37 | *
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| 38 | * ***** END LICENSE BLOCK ***** */
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| 39 |
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| 40 | /*
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| 41 | nsGarbageCollector.c
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| 42 | */
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| 43 |
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| 44 | #ifdef GC_LEAK_DETECTOR
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| 45 |
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| 46 | /* for FILE */
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| 47 | #include <stdio.h>
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| 48 |
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| 49 | /* NSPR stuff */
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| 50 | #include "generic_threads.h"
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| 51 | #include "prthread.h"
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| 52 | #include "prlock.h"
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| 53 |
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| 54 | /* Linux/Win32 export private NSPR files to include/private */
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| 55 | #ifdef XP_MAC
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| 56 | #include "pprthred.h"
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| 57 | #else
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| 58 | #include "private/pprthred.h"
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| 59 | #endif
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| 60 |
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| 61 | #include "nsLeakDetector.h"
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| 62 |
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| 63 | extern FILE *GC_stdout, *GC_stderr;
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| 64 |
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| 65 | extern void GC_gcollect(void);
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| 66 | extern void GC_clear_roots(void);
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| 67 |
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| 68 | static PRStatus PR_CALLBACK scanner(PRThread* t, void** baseAddr, PRUword count, void* closure)
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| 69 | {
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| 70 | char* begin = (char*)baseAddr;
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| 71 | char* end = (char*)(baseAddr + count);
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| 72 | GC_mark_range_proc marker = (GC_mark_range_proc) closure;
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| 73 | marker(begin, end);
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| 74 | return PR_SUCCESS;
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| 75 | }
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| 76 |
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| 77 | static void mark_all_stacks(GC_mark_range_proc marker)
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| 78 | {
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| 79 | /* PR_ThreadScanStackPointers(PR_GetCurrentThread(), &scanner, marker); */
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| 80 | PR_ScanStackPointers(&scanner, (void *)marker);
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| 81 | }
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| 82 |
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| 83 | static void locker(void* mutex)
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| 84 | {
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| 85 | PR_Lock(mutex);
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| 86 | }
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| 87 |
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| 88 | static void unlocker(void* mutex)
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| 89 | {
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| 90 | PR_Unlock(mutex);
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| 91 | }
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| 92 |
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| 93 | static void stopper(void* unused)
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| 94 | {
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| 95 | PR_SuspendAll();
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| 96 | }
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| 97 |
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| 98 | static void starter(void* unused)
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| 99 | {
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| 100 | PR_ResumeAll();
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| 101 | }
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| 102 |
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| 103 | nsresult NS_InitGarbageCollector()
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| 104 | {
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| 105 | PRLock* mutex;
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| 106 |
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| 107 | /* redirect GC's stderr to catch startup leaks. */
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| 108 | GC_stderr = fopen("StartupLeaks", "w");
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| 109 |
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| 110 | mutex = PR_NewLock();
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| 111 | if (mutex == NULL)
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| 112 | return NS_ERROR_FAILURE;
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| 113 |
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| 114 | GC_generic_init_threads(&mark_all_stacks, mutex,
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| 115 | &locker, &unlocker,
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| 116 | &stopper, &starter);
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| 117 |
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| 118 | return NS_OK;
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| 119 | }
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| 120 |
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| 121 | nsresult NS_ShutdownGarbageCollector()
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| 122 | {
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| 123 | /* do anything you need to shut down the collector. */
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| 124 | return NS_OK;
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| 125 | }
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| 126 |
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| 127 | #endif /* GC_LEAK_DETECTOR */
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