Fix fork()-related lock rank ordering reversals.

include/jemalloc/internal/arena.h

@@ -601,7 +601,10 @@ void	arena_nthreads_inc(arena_t *arena, bool internal);
 void	arena_nthreads_dec(arena_t *arena, bool internal);
 arena_t	*arena_new(tsd_t *tsd, unsigned ind);
 bool	arena_boot(void);
-void	arena_prefork(tsd_t *tsd, arena_t *arena);
+void	arena_prefork0(tsd_t *tsd, arena_t *arena);
+void	arena_prefork1(tsd_t *tsd, arena_t *arena);
+void	arena_prefork2(tsd_t *tsd, arena_t *arena);
+void	arena_prefork3(tsd_t *tsd, arena_t *arena);
 void	arena_postfork_parent(tsd_t *tsd, arena_t *arena);
 void	arena_postfork_child(tsd_t *tsd, arena_t *arena);
 

include/jemalloc/internal/private_symbols.txt

@@ -84,7 +84,10 @@ arena_nthreads_inc
 arena_palloc
 arena_postfork_child
 arena_postfork_parent
-arena_prefork
+arena_prefork0
+arena_prefork1
+arena_prefork2
+arena_prefork3
 arena_prof_accum
 arena_prof_accum_impl
 arena_prof_accum_locked
@@ -432,7 +435,8 @@ prof_malloc_sample_object
 prof_mdump
 prof_postfork_child
 prof_postfork_parent
-prof_prefork
+prof_prefork0
+prof_prefork1
 prof_realloc
 prof_reset
 prof_sample_accum_update
@@ -583,11 +587,14 @@ valgrind_make_mem_undefined
 witness_assert_lockless
 witness_assert_not_owner
 witness_assert_owner
+witness_fork_cleanup
 witness_init
 witness_lock
 witness_lock_error
 witness_lockless_error
 witness_not_owner_error
 witness_owner_error
+witness_postfork
+witness_prefork
 witness_unlock
 witnesses_cleanup

include/jemalloc/internal/prof.h

@@ -316,7 +316,8 @@ bool	prof_gdump_set(tsd_t *tsd, bool active);
 void	prof_boot0(void);
 void	prof_boot1(void);
 bool	prof_boot2(tsd_t *tsd);
-void	prof_prefork(tsd_t *tsd);
+void	prof_prefork0(tsd_t *tsd);
+void	prof_prefork1(tsd_t *tsd);
 void	prof_postfork_parent(tsd_t *tsd);
 void	prof_postfork_child(tsd_t *tsd);
 void	prof_sample_threshold_update(prof_tdata_t *tdata);

include/jemalloc/internal/tsd.h

@@ -544,6 +544,7 @@ struct tsd_init_head_s {
     O(tcache_enabled,		tcache_enabled_t)			\
     O(quarantine,		quarantine_t *)				\
     O(witnesses,		witness_list_t)				\
+    O(witness_fork,		bool)					\
 
 #define	TSD_INITIALIZER {						\
     tsd_state_uninitialized,						\
@@ -558,7 +559,8 @@ struct tsd_init_head_s {
     false,								\
     tcache_enabled_default,						\
     NULL,								\
-    ql_head_initializer(witnesses)					\
+    ql_head_initializer(witnesses),					\
+    false								\
 }
 
 struct tsd_s {

include/jemalloc/internal/witness.h

@@ -94,6 +94,9 @@ extern witness_lockless_error_t *witness_lockless_error;
 void	witness_assert_lockless(tsd_t *tsd);
 
 void	witnesses_cleanup(tsd_t *tsd);
+void	witness_fork_cleanup(tsd_t *tsd);
+void	witness_prefork(tsd_t *tsd);
+void	witness_postfork(tsd_t *tsd);
 
 #endif /* JEMALLOC_H_EXTERNS */
 /******************************************************************************/