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gcint.h
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
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00024  * Alternatively, the contents of this file may be used under the terms of
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00037 
00038 #ifndef gcint_h___
00039 #define gcint_h___
00040 
00041 #include "prmon.h"
00042 #include "prgc.h"
00043 
00044 extern PRLogModuleInfo *_pr_msgc_lm;
00045 extern GCInfo _pr_gcData;
00046 
00047 #if defined(_WIN32) && !defined(DEBUG)
00048 #undef INLINE_LOCK
00049 #endif
00050 
00051 #ifdef INLINE_LOCK
00052 #define LOCK_GC()       EnterCriticalSection(&_pr_gcData.lock->mutexHandle)
00053 #define UNLOCK_GC()     LeaveCriticalSection(&_pr_gcData.lock->mutexHandle)
00054 #else
00055 #define LOCK_GC()       PR_EnterMonitor(_pr_gcData.lock)
00056 #define UNLOCK_GC()     PR_ExitMonitor (_pr_gcData.lock)
00057 #define GC_IS_LOCKED()  (PR_GetMonitorEntryCount(_pr_gcData.lock)!=0)
00058 #endif
00059 
00060 #ifdef DEBUG
00061 #define _GCTRACE(x, y) if (_pr_gcData.flags & x) GCTrace y
00062 #else
00063 #define _GCTRACE(x, y)
00064 #endif
00065 
00066 extern GCBeginGCHook *_pr_beginGCHook;
00067 extern void *_pr_beginGCHookArg;
00068 extern GCBeginGCHook *_pr_endGCHook;
00069 extern void *_pr_endGCHookArg;
00070 
00071 extern GCBeginFinalizeHook *_pr_beginFinalizeHook;
00072 extern void *_pr_beginFinalizeHookArg;
00073 extern GCBeginFinalizeHook *_pr_endFinalizeHook;
00074 extern void *_pr_endFinalizeHookArg;
00075 
00076 extern int _pr_do_a_dump;
00077 extern FILE *_pr_dump_file;
00078 
00079 extern PRLogModuleInfo *_pr_gc_lm;
00080 
00081 /*
00082 ** Root finders. Root finders are used by the GC to find pointers into
00083 ** the GC heap that are not contained in the GC heap.
00084 */
00085 typedef struct RootFinderStr RootFinder;
00086 
00087 struct RootFinderStr {
00088     RootFinder *next;
00089     GCRootFinder *func;
00090     char *name;
00091     void *arg;
00092 };
00093 extern RootFinder *_pr_rootFinders;
00094 
00095 typedef struct CollectorTypeStr {
00096     GCType gctype;
00097     PRUint32 flags;
00098 } CollectorType;
00099 
00100 #define GC_MAX_TYPES 256
00101 extern CollectorType *_pr_collectorTypes;
00102 
00103 #define _GC_TYPE_BUSY   0x1
00104 #define _GC_TYPE_FINAL  0x2
00105 #define _GC_TYPE_WEAK   0x4
00106 
00107 /* Slot in _pr_gcTypes used for free memory */
00108 #define FREE_MEMORY_TYPEIX 255
00109 
00110 extern void _PR_InitGC(PRWord flags);
00111 extern void _MD_InitGC(void);
00112 extern void PR_CALLBACK _PR_ScanFinalQueue(void *notused);
00113 
00114 /*
00115 ** Grow the GC Heap.
00116 */
00117 extern void *_MD_GrowGCHeap(PRUint32 *sizep);
00118 
00119 /*
00120 ** Extend the GC Heap.
00121 */
00122 extern PRBool _MD_ExtendGCHeap(char *base, PRInt32 oldSize, PRInt32 newSize);
00123 
00124 /*
00125 ** Free a GC segment.
00126 */
00127 extern void _MD_FreeGCSegment(void *base, PRInt32 len);
00128 
00129 #endif /* gcint_h___ */