Add support for user-specified chunk allocators/deallocators.

Add new mallctl endpoints "arena<i>.chunk.alloc" and
"arena<i>.chunk.dealloc" to allow userspace to configure
jemalloc's chunk allocator and deallocator on a per-arena
basis.

1 files changed, 5 insertions, 3 deletions

diff --git a/include/jemalloc/internal/chunk.h b/include/jemalloc/internal/chunk.h
index 87d8700..cea0e8a 100644
--- a/include/jemalloc/internal/chunk.h
+++ b/include/jemalloc/internal/chunk.h
@@ -43,10 +43,12 @@ extern size_t		chunk_npages;
 extern size_t		map_bias; /* Number of arena chunk header pages. */
 extern size_t		arena_maxclass; /* Max size class for arenas. */
 
-void	*chunk_alloc(size_t size, size_t alignment, bool base, bool *zero,
-    dss_prec_t dss_prec);
+void	*chunk_alloc(arena_t *arena, size_t size, size_t alignment, bool base,
+    bool *zero, dss_prec_t dss_prec);
+void	*chunk_alloc_default(size_t size, size_t alignment, bool *zero,
+    unsigned arena_ind);
 void	chunk_unmap(void *chunk, size_t size);
-void	chunk_dealloc(void *chunk, size_t size, bool unmap);
+void	chunk_dealloc(arena_t *arena, void *chunk, size_t size, bool unmap);
 bool	chunk_boot(void);
 void	chunk_prefork(void);
 void	chunk_postfork_parent(void);