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-rw-r--r--erts/emulator/beam/erl_alloc.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_alloc.h b/erts/emulator/beam/erl_alloc.h
index f540bae20d..14e80960f5 100644
--- a/erts/emulator/beam/erl_alloc.h
+++ b/erts/emulator/beam/erl_alloc.h
@@ -30,6 +30,7 @@
#ifdef USE_THREADS
#include "erl_threads.h"
#endif
+#include "erl_mmap.h"
#ifdef DEBUG
# undef ERTS_ALC_WANT_INLINE
@@ -43,9 +44,11 @@
#if ERTS_CAN_INLINE && ERTS_ALC_WANT_INLINE
# define ERTS_ALC_DO_INLINE 1
# define ERTS_ALC_INLINE static ERTS_INLINE
+# define ERTS_ALC_FORCE_INLINE static ERTS_FORCE_INLINE
#else
# define ERTS_ALC_DO_INLINE 0
# define ERTS_ALC_INLINE
+# define ERTS_ALC_FORCE_INLINE
#endif
#define ERTS_ALC_NO_FIXED_SIZES \
@@ -177,6 +180,12 @@ void sys_free(void *) __deprecated; /* erts_free() */
void *sys_alloc(Uint ) __deprecated; /* erts_alloc_fnf() */
void *sys_realloc(void *, Uint) __deprecated; /* erts_realloc_fnf() */
+#undef ERTS_HAVE_IS_IN_LITERAL_RANGE
+#if defined(ARCH_32) || defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+# define ERTS_HAVE_IS_IN_LITERAL_RANGE
+#endif
+
+
/*
* erts_alloc[_fnf](), erts_realloc[_fnf](), erts_free() works as
* malloc(), realloc(), and free() with the following exceptions:
@@ -204,6 +213,9 @@ void erts_free(ErtsAlcType_t type, void *ptr);
void *erts_alloc_fnf(ErtsAlcType_t type, Uint size);
void *erts_realloc_fnf(ErtsAlcType_t type, void *ptr, Uint size);
int erts_is_allctr_wrapper_prelocked(void);
+#ifdef ERTS_HAVE_IS_IN_LITERAL_RANGE
+int erts_is_in_literal_range(void* ptr);
+#endif
#endif /* #if !ERTS_ALC_DO_INLINE */
@@ -281,6 +293,28 @@ int erts_is_allctr_wrapper_prelocked(void)
&& !!erts_tsd_get(erts_allctr_prelock_tsd_key); /* by me */
}
+#ifdef ERTS_HAVE_IS_IN_LITERAL_RANGE
+
+ERTS_ALC_FORCE_INLINE
+int erts_is_in_literal_range(void* ptr)
+{
+#if defined(ARCH_32)
+ Uint ix = (UWord)ptr >> ERTS_MMAP_SUPERALIGNED_BITS;
+
+ return erts_literal_vspace_map[ix / ERTS_VSPACE_WORD_BITS]
+ & ((UWord)1 << (ix % ERTS_VSPACE_WORD_BITS));
+
+#elif defined(ARCH_64)
+ extern char* erts_literals_start;
+ extern UWord erts_literals_size;
+ return ErtsInArea(ptr, erts_literals_start, erts_literals_size);
+#else
+# error No ARCH_xx
+#endif
+}
+
+#endif /* ERTS_HAVE_IS_IN_LITERAL_RANGE */
+
#endif /* #if ERTS_ALC_DO_INLINE || defined(ERTS_ALC_INTERNAL__) */
#define ERTS_ALC_GET_THR_IX() ((int) erts_get_scheduler_id())