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Initial check-in to mozilla tree: JSRef development is migrating from JSFUN13_BRANCH of /m/src repository to /m/pub
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef jsgc_h___
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#define jsgc_h___
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/*
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* JS Garbage Collector.
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*/
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#include "jspubtd.h"
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PR_BEGIN_EXTERN_C
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/* GC thing type indexes. */
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#define GCX_OBJECT 0 /* JSObject */
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#define GCX_STRING 1 /* JSString */
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#define GCX_DOUBLE 2 /* jsdouble */
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#define GCX_DECIMAL 3 /* JSDecimal */
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#define GCX_NTYPES 4
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/* GC flag definitions (type index goes in low bits). */
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#define GCF_TYPEMASK PR_BITMASK(2) /* use low bits for type */
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#define GCF_MARK PR_BIT(2) /* mark bit */
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#define GCF_FINAL PR_BIT(3) /* in finalization bit */
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#define GCF_LOCKBIT 4 /* lock bit shift and mask */
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#define GCF_LOCKMASK (PR_BITMASK(4) << GCF_LOCKBIT)
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#define GCF_LOCK PR_BIT(GCF_LOCKBIT) /* lock request bit in API */
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#if 1
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/*
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* Since we're forcing a GC from JS_GC anyway, don't bother wasting cycles
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* loading oldval. XXX remove implied force, poke in addroot/removeroot, &c
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*/
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#define GC_POKE(cx, oldval) ((cx)->runtime->gcPoke = JS_TRUE)
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#else
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#define GC_POKE(cx, oldval) ((cx)->runtime->gcPoke = JSVAL_IS_GCTHING(oldval))
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#endif
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extern JSBool
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js_InitGC(JSRuntime *rt, uint32 maxbytes);
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extern void
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js_FinishGC(JSRuntime *rt);
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extern JSBool
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js_AddRoot(JSContext *cx, void *rp, const char *name);
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extern JSBool
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js_RemoveRoot(JSContext *cx, void *rp);
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extern void *
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js_AllocGCThing(JSContext *cx, uintN flags);
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extern JSBool
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js_LockGCThing(JSContext *cx, void *thing);
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extern JSBool
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js_UnlockGCThing(JSContext *cx, void *thing);
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extern JS_FRIEND_API(void)
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js_ForceGC(JSContext *cx);
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extern void
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js_GC(JSContext *cx);
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#ifdef JS_GCMETER
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typedef struct JSGCStats {
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uint32 alloc; /* number of allocation attempts */
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uint32 freelen; /* gcFreeList length */
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uint32 recycle; /* number of things recycled through gcFreeList */
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uint32 retry; /* allocation attempt retries after running the GC */
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uint32 fail; /* allocation failures */
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uint32 lock; /* valid lock calls */
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uint32 unlock; /* valid unlock calls */
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uint32 stuck; /* stuck reference counts seen by lock calls */
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uint32 unstuck; /* unlock calls that saw a stuck lock count */
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uint32 depth; /* mark recursion depth */
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uint32 maxdepth; /* maximum mark recursion depth */
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uint32 maxlevel; /* maximum GC nesting (indirect recursion) level */
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uint32 poke; /* number of potentially useful GC calls */
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uint32 nopoke; /* useless GC calls where js_PokeGC was not set */
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uint32 badarena; /* thing arena corruption */
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uint32 badflag; /* flags arena corruption */
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uint32 afree; /* thing arenas freed so far */
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uint32 fafree; /* flags arenas freed so far */
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} JSGCStats;
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extern void
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js_DumpGCStats(JSRuntime *rt, FILE *fp);
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#endif /* JS_GCMETER */
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PR_END_EXTERN_C
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#endif /* jsgc_h___ */
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