return;
}
+ initMBlocks();
+
/* Sanity check to make sure the LOOKS_LIKE_ macros appear to be
* doing something reasonable.
*/
#if defined(THREADED_RTS)
closeMutex(&sm_mutex);
closeMutex(&atomic_modify_mutvar_mutex);
+ stgFree(nurseries);
#endif
}
}
/* -----------------------------------------------------------------------------
+ Write Barriers
+ -------------------------------------------------------------------------- */
+
+/*
This is the write barrier for MUT_VARs, a.k.a. IORefs. A
MUT_VAR_CLEAN object is not on the mutable list; a MUT_VAR_DIRTY
is. When written to, a MUT_VAR_CLEAN turns into a MUT_VAR_DIRTY
and is put on the mutable list.
- -------------------------------------------------------------------------- */
-
+*/
void
dirty_MUT_VAR(StgRegTable *reg, StgClosure *p)
{
}
}
+/*
+ This is the write barrier for MVARs. An MVAR_CLEAN objects is not
+ on the mutable list; a MVAR_DIRTY is. When written to, a
+ MVAR_CLEAN turns into a MVAR_DIRTY and is put on the mutable list.
+ The check for MVAR_CLEAN is inlined at the call site for speed,
+ this really does make a difference on concurrency-heavy benchmarks
+ such as Chaneneos and cheap-concurrency.
+*/
+void
+dirty_MVAR(StgRegTable *reg, StgClosure *p)
+{
+ Capability *cap = regTableToCapability(reg);
+ bdescr *bd;
+ bd = Bdescr((StgPtr)p);
+ if (bd->gen_no > 0) recordMutableCap(p,cap,bd->gen_no);
+}
+
/* -----------------------------------------------------------------------------
Allocation functions for GMP.
bd->gen_no -= *(StgPtr)p;
*(StgPtr)p = 0;
- // Free the block if it is empty, but not if it is the block at
- // the head of the queue.
- if (bd->gen_no == 0 && bd != exec_block) {
- debugTrace(DEBUG_gc, "free exec block %p", bd->start);
- dbl_link_remove(bd, &exec_block);
- setExecutable(bd->start, bd->blocks * BLOCK_SIZE, rtsFalse);
- freeGroup(bd);
+ if (bd->gen_no == 0) {
+ // Free the block if it is empty, but not if it is the block at
+ // the head of the queue.
+ if (bd != exec_block) {
+ debugTrace(DEBUG_gc, "free exec block %p", bd->start);
+ dbl_link_remove(bd, &exec_block);
+ setExecutable(bd->start, bd->blocks * BLOCK_SIZE, rtsFalse);
+ freeGroup(bd);
+ } else {
+ bd->free = bd->start;
+ }
}
RELEASE_SM_LOCK