1 /*************************************************************************
3 *************************************************************************/
5 [Something needed here to explain what this is doing. KH]
10 #include "SMinternal.h"
12 #if defined(_INFO_MARKING)
14 #if defined (__STG_GCC_REGS__) /* If we are using registers load _SAVE */
16 /* If we are using registers load _SAVE */
17 #define Mark SAVE_Mark
18 #define MRoot SAVE_MRoot
19 #define MStack SAVE_MStack
20 #define BitArray SAVE_BitArray
21 #define HeapBase SAVE_HeapBase
22 #define HeapLim SAVE_HeapLim
24 #endif /* registerized */
26 /* These in SMmark.lhc -- need to be in .hc file */
27 EXTFUN(_startMarkWorld);
29 EXTFUN(_PRMarking_MarkNextRoot);
30 EXTFUN(_PRMarking_MarkNextCAF);
31 EXTDATA(_PRMarking_MarkNextRoot_closure);
32 EXTDATA(_PRMarking_MarkNextCAF_closure);
35 EXTFUN(_PRMarking_MarkNextSpark);
36 EXTDATA(_PRMarking_MarkNextSpark_closure);
40 EXTFUN(_PRMarking_MarkNextEvent);
41 EXTDATA(_PRMarking_MarkNextEvent_closure);
42 EXTFUN(_PRMarking_MarkNextClosureInFetchBuffer);
43 EXTDATA(_PRMarking_MarkNextClosureInFetchBuffer_closure);
47 EXTFUN(_PRMarking_MarkNextGA);
48 EXTDATA(_PRMarking_MarkNextGA_closure);
50 EXTFUN(_PRMarking_MarkNextAStack);
51 EXTFUN(_PRMarking_MarkNextBStack);
52 EXTDATA(_PRMarking_MarkNextAStack_closure);
53 EXTDATA(_PRMarking_MarkNextBStack_closure);
54 #endif /* not parallel */
58 P_ ret_MRoot, ret_Mark;
62 markHeapRoots(sm, cafs1, cafs2, base, lim, bit_array)
64 P_ cafs1, cafs2; /* Pointer to CAF lists */
65 P_ base; /* Heap closure in range only tested for by GCgn */
76 rtsBool found = rtsFalse;
83 DEBUG_STRING("Marking Roots:");
85 sm_roots_end = (P_) &sm->roots[sm->rootno];
86 MRoot = (P_) sm->roots;
88 MStack = (P_) _PRMarking_MarkNextRoot_closure;
90 miniInterpret((StgFunPtr)_startMarkWorld);
94 DEBUG_STRING("Marking Events (GRAN): ");
99 /* inlined version of MarkNextEvent */
100 switch (EVENT_TYPE( ((eventq) MRoot) )) {
105 EVENT_GC_INFO( ((eventq) MRoot) ) = 0;
106 Mark = (P_) EVENT_TSO( ((eventq) MRoot) );
107 MStack = (P_) _PRMarking_MarkNextEvent_closure;
108 miniInterpret((StgFunPtr)_startMarkWorld);
112 EVENT_GC_INFO( ((eventq) MRoot) ) = 0;
113 Mark = (P_) SPARK_NODE(EVENT_SPARK( ((eventq) MRoot) ));
114 MStack = (P_) _PRMarking_MarkNextEvent_closure;
115 miniInterpret((StgFunPtr)_startMarkWorld);
119 EVENT_GC_INFO( ((eventq) MRoot) ) = 0;
120 Mark = (P_) EVENT_TSO( ((eventq) MRoot) );
121 MStack = (P_) _PRMarking_MarkNextEvent_closure;
122 miniInterpret((StgFunPtr)_startMarkWorld);
126 EVENT_GC_INFO( ((eventq) MRoot) ) = 0;
127 Mark = (P_) EVENT_TSO( ((eventq) MRoot) );
128 MStack = (P_) _PRMarking_MarkNextEvent_closure;
129 miniInterpret((StgFunPtr)_startMarkWorld);
133 EVENT_GC_INFO( ((eventq) MRoot) ) = 0;
134 Mark = (P_) EVENT_TSO( ((eventq) MRoot) );
135 MStack = (P_) _PRMarking_MarkNextEvent_closure;
136 miniInterpret((StgFunPtr)_startMarkWorld);
140 Mark = (P_) EVENT_TSO( ((eventq) MRoot) );
141 MStack = (P_) _PRMarking_MarkNextEvent_closure;
142 miniInterpret((StgFunPtr)_startMarkWorld);
146 MRoot = (P_) EVENT_NEXT( ((eventq) MRoot) );
150 fprintf(stderr,"Unknown event type %d (event @ %#x) in SMmarking_NextEvent\n",
151 EVENT_TYPE( ((eventq) MRoot) ), MRoot);
155 } while (!found && MRoot != NULL);
157 DEBUG_STRING("Marking Sparks (GRAN):");
158 for(proc = 0; proc < RTSflags.GranFlags.proc; ++proc) {
159 for(pool = 0; pool < SPARK_POOLS; pool++) {
160 MRoot = (P_) PendingSparksHd[proc][pool];
162 Mark = (P_) SPARK_NODE( ((sparkq) MRoot) );
163 MStack = (P_) _PRMarking_MarkNextSpark_closure;
164 miniInterpret((StgFunPtr)_startMarkWorld);
166 } /* forall pool .. */
167 } /* forall proc ... */
170 #if defined(CONCURRENT) && !defined(GRAN)
171 for(pool = 0; pool < SPARK_POOLS; pool++) {
172 if (PendingSparksHd[pool] < PendingSparksTl[pool]) {
173 sm_roots_end = (P_) PendingSparksTl[pool];
174 MRoot = (P_) PendingSparksHd[pool];
176 MStack = (P_) _PRMarking_MarkNextSpark_closure;
178 miniInterpret((StgFunPtr)_startMarkWorld);
184 DEBUG_STRING("Marking GA Roots:");
185 MRoot = (P_) liveIndirections;
186 while(MRoot != NULL && ((GALA *)MRoot)->ga.weight == MAX_GA_WEIGHT)
187 MRoot = (P_) ((GALA *)MRoot)->next;
189 Mark = ((GALA *)MRoot)->la;
190 MStack = (P_) _PRMarking_MarkNextGA_closure;
192 miniInterpret((StgFunPtr) _startMarkWorld);
195 /* Note: no *external* stacks in parallel/concurrent world */
197 DEBUG_STRING("Marking A Stack:");
198 if (SUBTRACT_A_STK(MAIN_SpA, stackInfo.botA) >= 0) {
199 MRoot = (P_) MAIN_SpA;
201 MStack = (P_) _PRMarking_MarkNextAStack_closure;
203 miniInterpret((StgFunPtr)_startMarkWorld);
206 DEBUG_STRING("Marking B Stack:");
207 if (SUBTRACT_B_STK(MAIN_SuB, stackInfo.botB) > 0) {
209 Mark = GRAB_UPDATEE(MRoot);
210 MStack = (P_) _PRMarking_MarkNextBStack_closure;
211 miniInterpret((StgFunPtr)_startMarkWorld);
215 DEBUG_STRING("Marking & Updating CAFs:");
218 Mark = (P_) IND_CLOSURE_PTR(MRoot);
219 MStack = (P_) _PRMarking_MarkNextCAF_closure;
221 miniInterpret((StgFunPtr)_startMarkWorld);
226 Mark = (P_) IND_CLOSURE_PTR(MRoot);
227 MStack = (P_) _PRMarking_MarkNextCAF_closure;
229 miniInterpret((StgFunPtr)_startMarkWorld);
235 #endif /* _INFO_MARKING */
239 CODE REQUIRED (expressed as a loop):
243 MStack = _PRMarking_MarkNextRoot_closure;
244 for (MRoot = (P_) sm->roots;
245 MRoot < (P_) &sm->roots[sm->rootno];
248 (PRMARK_CODE(INFO_PTR(Mark)))();
249 _PRMarking_MarkNextRoot:
256 MStack = _PRMarking_MarkNextAStack_closure;
257 for (MRoot = MAIN_SpA;
258 SUBTRACT_A_STK(MRoot, stackInfo.botA) >= 0;
259 MRoot = MRoot + AREL(1)) {
261 (PRMARK_CODE(INFO_PTR(Mark)))();
262 _PRMarking_MarkNextAStack:
269 MStack = _PRMarking_MarkNextBStack_closure;
270 for (MRoot = MAIN_SuB; --- Topmost Update Frame
271 SUBTRACT_B_STK(MRoot, stackInfo.botB) > 0;
272 MRoot = GRAB_SuB(MRoot)) {
274 Mark = GRAB_UPDATEE(MRoot);
275 (PRMARK_CODE(INFO_PTR(Mark)))();
276 _PRMarking_MarkNextBStack:
277 PUSH_UPDATEE(MRoot, Mark);
283 MStack = _PRMarking_MarkNextCAF_closure;
284 for (MRoot = sm->CAFlist;
286 MRoot = (P_) IND_CLOSURE_LINK(MRoot))
288 Mark = IND_CLOSURE_PTR(MRoot);
289 (PRMARK_CODE(INFO_PTR(Mark)))();
290 _PRMarking_MarkNextCAF:
291 IND_CLOSURE_PTR(MRoot) = (W_) Mark;