project-base/server-skynet-source-3rd-jemalloc
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Fix type punning in calls to atomic operation functions.

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This commit is contained in:
Jason Evans 2015-05-07 22:35:40 -07:00
parent 8a03cf039c
commit c451831264
2 changed files with 15 additions and 8 deletions
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9
include/jemalloc/internal/arena.h
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@ -145,7 +145,10 @@ struct arena_chunk_map_misc_s {
arena_runs_dirty_link_t rd;
/* Profile counters, used for large object runs. */
prof_tctx_t *prof_tctx;
union {
void *prof_tctx_pun;
prof_tctx_t *prof_tctx;
};
/* Small region run metadata. */
arena_run_t run;
@ -1025,7 +1028,7 @@ arena_prof_tctx_get(const void *ptr)
else {
arena_chunk_map_misc_t *elm = arena_miscelm_get(chunk,
pageind);
ret = atomic_read_p((void **)&elm->prof_tctx);
ret = atomic_read_p(&elm->prof_tctx_pun);
}
} else
ret = huge_prof_tctx_get(ptr);
@ -1049,7 +1052,7 @@ arena_prof_tctx_set(const void *ptr, prof_tctx_t *tctx)
if (unlikely(arena_mapbits_large_get(chunk, pageind) != 0)) {
arena_chunk_map_misc_t *elm = arena_miscelm_get(chunk,
pageind);
atomic_write_p((void **)&elm->prof_tctx, tctx);
atomic_write_p(&elm->prof_tctx_pun, tctx);
}
} else
huge_prof_tctx_set(ptr, tctx);

14
include/jemalloc/internal/rtree.h
View File

@ -36,6 +36,7 @@ typedef void (rtree_node_dalloc_t)(rtree_node_elm_t *);
struct rtree_node_elm_s {
union {
void *pun;
rtree_node_elm_t *child;
extent_node_t *val;
};
@ -64,7 +65,10 @@ struct rtree_level_s {
* lower 47 bits of virtual address space in userland, thus leaving
* subtrees[0] unused and avoiding a level of tree traversal.
*/
rtree_node_elm_t *subtree;
union {
void *subtree_pun;
rtree_node_elm_t *subtree;
};
/* Number of key bits distinguished by this level. */
unsigned bits;
/*
@ -159,7 +163,7 @@ rtree_child_tryread(rtree_node_elm_t *elm)
/* Double-checked read (first read may be stale. */
child = elm->child;
if (!rtree_node_valid(child))
child = atomic_read_p((void **)&elm->child);
child = atomic_read_p(&elm->pun);
return (child);
}
@ -178,14 +182,14 @@ JEMALLOC_INLINE extent_node_t *
rtree_val_read(rtree_t *rtree, rtree_node_elm_t *elm)
{
return (atomic_read_p((void **)&elm->val));
return (atomic_read_p(&elm->pun));
}
JEMALLOC_INLINE void
rtree_val_write(rtree_t *rtree, rtree_node_elm_t *elm, const extent_node_t *val)
{
atomic_write_p((void **)&elm->val, val);
atomic_write_p(&elm->pun, val);
}
JEMALLOC_INLINE rtree_node_elm_t *
@ -196,7 +200,7 @@ rtree_subtree_tryread(rtree_t *rtree, unsigned level)
/* Double-checked read (first read may be stale. */
subtree = rtree->levels[level].subtree;
if (!rtree_node_valid(subtree))
subtree = atomic_read_p((void **)&rtree->levels[level].subtree);
subtree = atomic_read_p(&rtree->levels[level].subtree_pun);
return (subtree);
}