aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/sys
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/sys')
-rw-r--r--erts/emulator/sys/common/erl_mseg.h6
-rw-r--r--erts/emulator/sys/unix/erl_unix_sys.h4
-rw-r--r--erts/emulator/sys/unix/sys.c46
-rw-r--r--erts/emulator/sys/win32/erl_win_sys.h2
-rwxr-xr-xerts/emulator/sys/win32/sys.c26
5 files changed, 80 insertions, 4 deletions
diff --git a/erts/emulator/sys/common/erl_mseg.h b/erts/emulator/sys/common/erl_mseg.h
index 3cab9e18da..127576b850 100644
--- a/erts/emulator/sys/common/erl_mseg.h
+++ b/erts/emulator/sys/common/erl_mseg.h
@@ -32,13 +32,13 @@
#if HAVE_MMAP
# define HAVE_ERTS_MSEG 1
-# define HAVE_SUPER_ALIGNED_MB_CARRIERS 1
+# define ERTS_HAVE_MSEG_SUPER_ALIGNED 1
#else
# define HAVE_ERTS_MSEG 0
-# define HAVE_SUPER_ALIGNED_MB_CARRIERS 0
+# define ERTS_HAVE_MSEG_SUPER_ALIGNED 0
#endif
-#if HAVE_SUPER_ALIGNED_MB_CARRIERS
+#if ERTS_HAVE_MSEG_SUPER_ALIGNED
# define MSEG_ALIGN_BITS (18)
/* Affects hard limits for sbct and lmbcs documented in erts_alloc.xml */
#else
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h
index c8fcec8547..2c47aa06c2 100644
--- a/erts/emulator/sys/unix/erl_unix_sys.h
+++ b/erts/emulator/sys/unix/erl_unix_sys.h
@@ -107,6 +107,10 @@
#endif
#include <netdb.h>
+#ifdef HAVE_POSIX_MEMALIGN
+# define ERTS_HAVE_ERTS_SYS_ALIGNED_ALLOC 1
+#endif
+
/*
* Make sure that MAXPATHLEN is defined.
*/
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index a7ea4b2490..fdc3167c62 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -2524,6 +2524,52 @@ void erts_sys_alloc_init(void)
{
}
+#if ERTS_HAVE_ERTS_SYS_ALIGNED_ALLOC
+void *erts_sys_aligned_alloc(UWord alignment, UWord size)
+{
+#ifdef HAVE_POSIX_MEMALIGN
+ void *ptr = NULL;
+ int error;
+ ASSERT(alignment && (alignment & ~alignment) == 0); /* power of 2 */
+ error = posix_memalign(&ptr, (size_t) alignment, (size_t) size);
+#if HAVE_ERTS_MSEG
+ if (error || !ptr) {
+ erts_mseg_clear_cache();
+ error = posix_memalign(&ptr, (size_t) alignment, (size_t) size);
+ }
+#endif
+ if (error) {
+ errno = error;
+ return NULL;
+ }
+ if (!ptr)
+ errno = ENOMEM;
+ ASSERT(!ptr || (((UWord) ptr) & (alignment - 1)) == 0);
+ return ptr;
+#else
+# error "Missing erts_sys_aligned_alloc() implementation"
+#endif
+}
+
+void erts_sys_aligned_free(UWord alignment, void *ptr)
+{
+ ASSERT(alignment && (alignment & ~alignment) == 0); /* power of 2 */
+ free(ptr);
+}
+
+void *erts_sys_aligned_realloc(UWord alignment, void *ptr, UWord size, UWord old_size)
+{
+ void *new_ptr = erts_sys_aligned_alloc(alignment, size);
+ if (new_ptr) {
+ UWord copy_size = old_size < size ? old_size : size;
+ sys_memcpy(new_ptr, ptr, (size_t) copy_size);
+ erts_sys_aligned_free(alignment, ptr);
+ }
+ return new_ptr;
+}
+
+#endif
+
void *erts_sys_alloc(ErtsAlcType_t t, void *x, Uint sz)
{
void *res = malloc((size_t) sz);
diff --git a/erts/emulator/sys/win32/erl_win_sys.h b/erts/emulator/sys/win32/erl_win_sys.h
index 5ce1a61303..c44c5d9492 100644
--- a/erts/emulator/sys/win32/erl_win_sys.h
+++ b/erts/emulator/sys/win32/erl_win_sys.h
@@ -95,6 +95,8 @@
# define ERTS_I64_LITERAL(X) X##i64
#endif
+#define ERTS_HAVE_ERTS_SYS_ALIGNED_ALLOC 1
+
/*
* Practial Windows specific macros.
*/
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index e0422de026..8244a43583 100755
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -32,7 +32,7 @@
#include "erl_threads.h"
#include "../../drivers/win32/win_con.h"
#include "erl_cpu_topology.h"
-
+#include <malloc.h>
void erts_sys_init_float(void);
@@ -2906,6 +2906,30 @@ void erts_sys_free(ErtsAlcType_t t, void *x, void *p)
free(p);
}
+void *erts_sys_aligned_alloc(UWord alignment, UWord size)
+{
+ void *ptr;
+ ASSERT(alignment && (alignment & ~alignment) == 0); /* power of 2 */
+ ptr = _aligned_malloc((size_t) size, (size_t) alignment);
+ ASSERT(!ptr || (((UWord) ptr) & (alignment - 1)) == 0);
+ return ptr;
+}
+
+void erts_sys_aligned_free(UWord alignment, void *ptr)
+{
+ ASSERT(alignment && (alignment & ~alignment) == 0); /* power of 2 */
+ _aligned_free(ptr);
+}
+
+void *erts_sys_aligned_realloc(UWord alignment, void *ptr, UWord size, UWord old_size)
+{
+ void *new_ptr;
+ ASSERT(alignment && (alignment & ~alignment) == 0); /* power of 2 */
+ new_ptr = _aligned_realloc(ptr, (size_t) size, (size_t) alignment);
+ ASSERT(!new_ptr || (((UWord) new_ptr) & (alignment - 1)) == 0);
+ return new_ptr;
+}
+
static Preload* preloaded = NULL;
static unsigned* res_name = NULL;
static int num_preloaded = 0;