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authorSverker Eriksson <[email protected]>2017-08-30 20:55:08 +0200
committerSverker Eriksson <[email protected]>2017-08-30 20:55:08 +0200
commit7c67bbddb53c364086f66260701bc54a61c9659c (patch)
tree92ab0d4b91d5e2f6e7a3f9d61ea25089e8a71fe0 /erts/emulator/sys/common/erl_mmap.h
parent97dc5e7f396129222419811c173edc7fa767b0f8 (diff)
parent3b7a6ffddc819bf305353a593904cea9e932e7dc (diff)
downloadotp-7c67bbddb53c364086f66260701bc54a61c9659c.tar.gz
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Merge tag 'OTP-19.0' into sverker/19/binary_to_atom-utf8-crash/ERL-474/OTP-14590
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diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h
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+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2013-2016. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef ERL_MMAP_H__
+#define ERL_MMAP_H__
+
+#include "sys.h"
+
+#define ERTS_MMAP_SUPERALIGNED_BITS (18)
+/* Affects hard limits for sbct and lmbcs documented in erts_alloc.xml */
+
+#ifndef HAVE_MMAP
+# define HAVE_MMAP 0
+#endif
+#ifndef HAVE_MREMAP
+# define HAVE_MREMAP 0
+#endif
+#if HAVE_MMAP
+# define ERTS_HAVE_OS_MMAP 1
+# define ERTS_HAVE_GENUINE_OS_MMAP 1
+# if HAVE_MREMAP
+# define ERTS_HAVE_OS_MREMAP 1
+# endif
+/*
+ * MAP_NORESERVE is undefined in FreeBSD 10.x and later.
+ * This is to enable 64bit HiPE experimentally on FreeBSD.
+ * Note that on FreeBSD MAP_NORESERVE was "never implemented"
+ * even before 11.x (and the flag does not exist in /usr/src/sys/vm/mmap.c
+ * of 10.3-STABLE r301478 either), and HiPE was working on OTP 18.3.3,
+ * so mandating MAP_NORESERVE on FreeBSD might not be needed.
+ * See the following message on how MAP_NORESERVE was treated on FreeBSD:
+ * <http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20150202/122958.html>
+ */
+# if defined(MAP_FIXED) && (defined(MAP_NORESERVE) || defined(__FreeBSD__))
+# define ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION 1
+# endif
+#endif
+
+#ifndef HAVE_VIRTUALALLOC
+# define HAVE_VIRTUALALLOC 0
+#endif
+#if HAVE_VIRTUALALLOC
+# define ERTS_HAVE_OS_MMAP 1
+#endif
+
+#ifdef ERTS_HAVE_GENUINE_OS_MMAP
+# define HAVE_ERTS_MMAP 1
+#else
+# define HAVE_ERTS_MMAP 0
+#endif
+
+
+extern UWord erts_page_inv_mask;
+
+typedef struct {
+ struct {
+ char *start;
+ char *end;
+ } virtual_range;
+ struct {
+ char *start;
+ char *end;
+ } predefined_area;
+ UWord scs; /* super carrier size */
+ int sco; /* super carrier only? */
+ UWord scrfsd; /* super carrier reserved free segment descriptors */
+ int scrpm; /* super carrier reserve physical memory */
+}ErtsMMapInit;
+
+#define ERTS_MMAP_INIT_DEFAULT_INITER \
+ {{NULL, NULL}, {NULL, NULL}, 0, 1, (1 << 16), 1}
+
+#define ERTS_LITERAL_VIRTUAL_AREA_SIZE (UWORD_CONSTANT(1)*1024*1024*1024)
+
+#define ERTS_MMAP_INIT_LITERAL_INITER \
+ {{NULL, NULL}, {NULL, NULL}, ERTS_LITERAL_VIRTUAL_AREA_SIZE, 1, (1 << 10), 0}
+
+#define ERTS_HIPE_EXEC_VIRTUAL_AREA_SIZE (UWORD_CONSTANT(512)*1024*1024)
+
+#define ERTS_MMAP_INIT_HIPE_EXEC_INITER \
+ {{NULL, NULL}, {NULL, NULL}, ERTS_HIPE_EXEC_VIRTUAL_AREA_SIZE, 1, (1 << 10), 0}
+
+
+#define ERTS_SUPERALIGNED_SIZE \
+ (1 << ERTS_MMAP_SUPERALIGNED_BITS)
+#define ERTS_INV_SUPERALIGNED_MASK \
+ ((UWord) (ERTS_SUPERALIGNED_SIZE - 1))
+#define ERTS_SUPERALIGNED_MASK \
+ (~ERTS_INV_SUPERALIGNED_MASK)
+#define ERTS_SUPERALIGNED_FLOOR(X) \
+ (((UWord) (X)) & ERTS_SUPERALIGNED_MASK)
+#define ERTS_SUPERALIGNED_CEILING(X) \
+ ERTS_SUPERALIGNED_FLOOR((X) + ERTS_INV_SUPERALIGNED_MASK)
+#define ERTS_IS_SUPERALIGNED(X) \
+ (((UWord) (X) & ERTS_INV_SUPERALIGNED_MASK) == 0)
+
+#define ERTS_INV_PAGEALIGNED_MASK \
+ (erts_page_inv_mask)
+#define ERTS_PAGEALIGNED_MASK \
+ (~ERTS_INV_PAGEALIGNED_MASK)
+#define ERTS_PAGEALIGNED_FLOOR(X) \
+ (((UWord) (X)) & ERTS_PAGEALIGNED_MASK)
+#define ERTS_PAGEALIGNED_CEILING(X) \
+ ERTS_PAGEALIGNED_FLOOR((X) + ERTS_INV_PAGEALIGNED_MASK)
+#define ERTS_IS_PAGEALIGNED(X) \
+ (((UWord) (X) & ERTS_INV_PAGEALIGNED_MASK) == 0)
+#define ERTS_PAGEALIGNED_SIZE \
+ (ERTS_INV_PAGEALIGNED_MASK + 1)
+
+struct process;
+Eterm erts_mmap_debug_info(struct process*);
+
+#if HAVE_ERTS_MMAP
+
+typedef struct ErtsMemMapper_ ErtsMemMapper;
+
+#define ERTS_MMAPFLG_OS_ONLY (((Uint32) 1) << 0)
+#define ERTS_MMAPFLG_SUPERCARRIER_ONLY (((Uint32) 1) << 1)
+#define ERTS_MMAPFLG_SUPERALIGNED (((Uint32) 1) << 2)
+
+void *erts_mmap(ErtsMemMapper*, Uint32 flags, UWord *sizep);
+void erts_munmap(ErtsMemMapper*, Uint32 flags, void *ptr, UWord size);
+void *erts_mremap(ErtsMemMapper*, Uint32 flags, void *ptr, UWord old_size, UWord *sizep);
+int erts_mmap_in_supercarrier(ErtsMemMapper*, void *ptr);
+void erts_mmap_init(ErtsMemMapper*, ErtsMMapInit*, int executable);
+struct erts_mmap_info_struct
+{
+ UWord sizes[6];
+ UWord segs[6];
+ UWord os_used;
+};
+Eterm erts_mmap_info(ErtsMemMapper*, int *print_to_p, void *print_to_arg,
+ Eterm** hpp, Uint* szp, struct erts_mmap_info_struct*);
+Eterm erts_mmap_info_options(ErtsMemMapper*,
+ char *prefix, int *print_to_p, void *print_to_arg,
+ Uint **hpp, Uint *szp);
+
+
+#ifdef ERTS_WANT_MEM_MAPPERS
+# include "erl_alloc_types.h"
+
+extern ErtsMemMapper erts_dflt_mmapper;
+# if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+extern ErtsMemMapper erts_literal_mmapper;
+# endif
+# ifdef ERTS_ALC_A_EXEC
+extern ErtsMemMapper erts_exec_mmapper;
+# endif
+#endif /* ERTS_WANT_MEM_MAPPERS */
+
+/*#define HARD_DEBUG_MSEG*/
+#ifdef HARD_DEBUG_MSEG
+# define HARD_DBG_INSERT_MSEG hard_dbg_insert_mseg
+# define HARD_DBG_REMOVE_MSEG hard_dbg_remove_mseg
+void hard_dbg_insert_mseg(void* seg, UWord sz);
+void hard_dbg_remove_mseg(void* seg, UWord sz);
+#else
+# define HARD_DBG_INSERT_MSEG(SEG,SZ)
+# define HARD_DBG_REMOVE_MSEG(SEG,SZ)
+#endif
+
+#endif /* HAVE_ERTS_MMAP */
+
+#endif /* ERL_MMAP_H__ */