diff --git a/libc/private/bionic_globals.h b/libc/private/bionic_globals.h
index 21a2a24..fdbcee3 100644
--- a/libc/private/bionic_globals.h
+++ b/libc/private/bionic_globals.h
@@ -29,6 +29,7 @@
 #ifndef _PRIVATE_BIONIC_GLOBALS_H
 #define _PRIVATE_BIONIC_GLOBALS_H
 
+#include <stdatomic.h>
 #include <sys/cdefs.h>
 #include <link.h>
 #include <pthread.h>
@@ -43,7 +44,18 @@
 struct libc_globals {
   vdso_entry vdso[VDSO_END];
   long setjmp_cookie;
-  MallocDispatch malloc_dispatch;
+
+  // In order to allow a complete switch between dispatch tables without
+  // the need for copying each function by function in the structure,
+  // use a single atomic pointer to switch.
+  // The current_dispatch_table pointer can only ever be set to a complete
+  // table. Any dispatch table that is pointed to by current_dispatch_table
+  // cannot be modified after that. If the pointer changes in the future,
+  // the old pointer must always stay valid.
+  // The malloc_dispatch_table is modified by malloc debug, malloc hooks,
+  // and heaprofd. Only one of these modes can be active at any given time.
+  _Atomic(const MallocDispatch*) current_dispatch_table;
+  MallocDispatch malloc_dispatch_table;
 };
 
 __LIBC_HIDDEN__ extern WriteProtected<libc_globals> __libc_globals;
diff --git a/libc/private/bionic_malloc_dispatch.h b/libc/private/bionic_malloc_dispatch.h
index f15b72c..0dce03d 100644
--- a/libc/private/bionic_malloc_dispatch.h
+++ b/libc/private/bionic_malloc_dispatch.h
@@ -31,7 +31,6 @@
 
 #include <stddef.h>
 #include <stdint.h>
-#include <stdatomic.h>
 #include <private/bionic_config.h>
 
 // Entry in malloc dispatch table.
@@ -55,25 +54,25 @@
 #endif
 
 struct MallocDispatch {
-  _Atomic MallocCalloc calloc;
-  _Atomic MallocFree free;
-  _Atomic MallocMallinfo mallinfo;
-  _Atomic MallocMalloc malloc;
-  _Atomic MallocMallocUsableSize malloc_usable_size;
-  _Atomic MallocMemalign memalign;
-  _Atomic MallocPosixMemalign posix_memalign;
+  MallocCalloc calloc;
+  MallocFree free;
+  MallocMallinfo mallinfo;
+  MallocMalloc malloc;
+  MallocMallocUsableSize malloc_usable_size;
+  MallocMemalign memalign;
+  MallocPosixMemalign posix_memalign;
 #if defined(HAVE_DEPRECATED_MALLOC_FUNCS)
-  _Atomic MallocPvalloc pvalloc;
+  MallocPvalloc pvalloc;
 #endif
-  _Atomic MallocRealloc realloc;
+  MallocRealloc realloc;
 #if defined(HAVE_DEPRECATED_MALLOC_FUNCS)
-  _Atomic MallocValloc valloc;
+  MallocValloc valloc;
 #endif
-  _Atomic MallocIterate iterate;
-  _Atomic MallocMallocDisable malloc_disable;
-  _Atomic MallocMallocEnable malloc_enable;
-  _Atomic MallocMallopt mallopt;
-  _Atomic MallocAlignedAlloc aligned_alloc;
+  MallocIterate iterate;
+  MallocMallocDisable malloc_disable;
+  MallocMallocEnable malloc_enable;
+  MallocMallopt mallopt;
+  MallocAlignedAlloc aligned_alloc;
 } __attribute__((aligned(32)));
 
 #endif