| [21694] | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
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| 2 | * |
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| 3 | * The contents of this file are subject to the Mozilla Public |
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| 4 | * License Version 1.1 (the "License"); you may not use this file |
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| 5 | * except in compliance with the License. You may obtain a copy of |
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| 6 | * the License at http://www.mozilla.org/MPL/ |
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| 7 | * |
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| 8 | * Software distributed under the License is distributed on an "AS |
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| 9 | * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
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| 10 | * implied. See the License for the specific language governing |
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| 11 | * rights and limitations under the License. |
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| 12 | * |
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| 13 | * The Original Code is the Mozilla browser. |
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| 14 | * |
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| 15 | * The Initial Developer of the Original Code is Netscape |
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| 16 | * Communications, Inc. Portions created by Netscape are |
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| 17 | * Copyright (C) 1999, Mozilla. All Rights Reserved. |
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| 18 | * |
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| 19 | * Contributor(s): |
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| 20 | * Patrick Beard <beard@netscape.com> |
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| 21 | */ |
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| 22 | |
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| 23 | /* |
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| 24 | nsGarbageCollector.c |
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| 25 | */ |
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| 26 | |
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| 27 | #ifdef GC_LEAK_DETECTOR |
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| 28 | |
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| 29 | /* for FILE */ |
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| 30 | #include <stdio.h> |
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| 31 | |
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| 32 | /* NSPR stuff */ |
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| 33 | #include "generic_threads.h" |
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| 34 | #include "prthread.h" |
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| 35 | #include "prlock.h" |
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| 36 | |
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| 37 | /* Linux/Win32 export private NSPR files to include/private */ |
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| 38 | #ifdef XP_MAC |
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| 39 | #include "pprthred.h" |
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| 40 | #else |
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| 41 | #include "private/pprthred.h" |
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| 42 | #endif |
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| 43 | |
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| 44 | #include "nsLeakDetector.h" |
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| 45 | |
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| 46 | extern FILE *GC_stdout, *GC_stderr; |
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| 47 | |
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| 48 | extern void GC_gcollect(void); |
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| 49 | extern void GC_clear_roots(void); |
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| 50 | |
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| 51 | static PRStatus PR_CALLBACK scanner(PRThread* t, void** baseAddr, PRUword count, void* closure) |
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| 52 | { |
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| 53 | char* begin = (char*)baseAddr; |
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| 54 | char* end = (char*)(baseAddr + count); |
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| 55 | GC_mark_range_proc marker = (GC_mark_range_proc) closure; |
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| 56 | marker(begin, end); |
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| 57 | return PR_SUCCESS; |
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| 58 | } |
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| 59 | |
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| 60 | static void mark_all_stacks(GC_mark_range_proc marker) |
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| 61 | { |
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| 62 | /* PR_ThreadScanStackPointers(PR_GetCurrentThread(), &scanner, marker); */ |
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| 63 | PR_ScanStackPointers(&scanner, (void *)marker); |
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| 64 | } |
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| 65 | |
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| 66 | static void locker(void* mutex) |
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| 67 | { |
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| 68 | PR_Lock(mutex); |
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| 69 | } |
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| 70 | |
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| 71 | static void unlocker(void* mutex) |
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| 72 | { |
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| 73 | PR_Unlock(mutex); |
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| 74 | } |
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| 75 | |
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| 76 | static void stopper(void* unused) |
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| 77 | { |
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| 78 | PR_SuspendAll(); |
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| 79 | } |
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| 80 | |
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| 81 | static void starter(void* unused) |
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| 82 | { |
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| 83 | PR_ResumeAll(); |
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| 84 | } |
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| 85 | |
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| 86 | nsresult NS_InitGarbageCollector() |
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| 87 | { |
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| 88 | PRLock* mutex; |
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| 89 | |
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| 90 | /* redirect GC's stderr to catch startup leaks. */ |
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| 91 | GC_stderr = fopen("StartupLeaks", "w"); |
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| 92 | |
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| 93 | mutex = PR_NewLock(); |
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| 94 | if (mutex == NULL) |
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| 95 | return NS_ERROR_FAILURE; |
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| 96 | |
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| 97 | GC_generic_init_threads(&mark_all_stacks, mutex, |
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| 98 | &locker, &unlocker, |
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| 99 | &stopper, &starter); |
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| 100 | |
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| 101 | return NS_OK; |
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| 102 | } |
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| 103 | |
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| 104 | nsresult NS_ShutdownGarbageCollector() |
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| 105 | { |
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| 106 | /* do anything you need to shut down the collector. */ |
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| 107 | return NS_OK; |
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| 108 | } |
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| 109 | |
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| 110 | #endif /* GC_LEAK_DETECTOR */ |
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