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Diffstat (limited to 'src/corelib/arch/symbian/dla_p.h')
| -rw-r--r-- | src/corelib/arch/symbian/dla_p.h | 969 |
1 files changed, 969 insertions, 0 deletions
diff --git a/src/corelib/arch/symbian/dla_p.h b/src/corelib/arch/symbian/dla_p.h new file mode 100644 index 0000000000..c2fa99a087 --- /dev/null +++ b/src/corelib/arch/symbian/dla_p.h @@ -0,0 +1,969 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef __DLA__ +#define __DLA__ + +#define DEFAULT_TRIM_THRESHOLD ((size_t)4U * (size_t)1024U) + +#define MSPACES 0 +#define HAVE_MORECORE 1 +#define MORECORE_CONTIGUOUS 1 +#define HAVE_MMAP 0 +#define HAVE_MREMAP 0 +#define DEFAULT_GRANULARITY (4096U) +#define FOOTERS 0 +#define USE_LOCKS 0 +#define INSECURE 1 +#define NO_MALLINFO 0 + +#define LACKS_SYS_TYPES_H +#ifndef LACKS_SYS_TYPES_H +#include <sys/types.h> /* For size_t */ +#else +#ifndef _SIZE_T_DECLARED +typedef unsigned int size_t; +#define _SIZE_T_DECLARED +#endif +#endif /* LACKS_SYS_TYPES_H */ + +/* The maximum possible size_t value has all bits set */ +#define MAX_SIZE_T (~(size_t)0) + +#ifndef ONLY_MSPACES + #define ONLY_MSPACES 0 +#endif /* ONLY_MSPACES */ + +#ifndef MSPACES + #if ONLY_MSPACES + #define MSPACES 1 + #else /* ONLY_MSPACES */ + #define MSPACES 0 + #endif /* ONLY_MSPACES */ +#endif /* MSPACES */ + +//#ifndef MALLOC_ALIGNMENT +// #define MALLOC_ALIGNMENT ((size_t)8U) +//#endif /* MALLOC_ALIGNMENT */ + +#ifndef FOOTERS + #define FOOTERS 0 +#endif /* FOOTERS */ + +#ifndef ABORT +// #define ABORT abort() +// #define ABORT User::Invariant()// redefined so euser isn't dependant on oe + #define ABORT HEAP_PANIC(ETHeapBadCellAddress) +#endif /* ABORT */ + +#ifndef PROCEED_ON_ERROR + #define PROCEED_ON_ERROR 0 +#endif /* PROCEED_ON_ERROR */ + +#ifndef USE_LOCKS + #define USE_LOCKS 0 +#endif /* USE_LOCKS */ + +#ifndef INSECURE + #define INSECURE 0 +#endif /* INSECURE */ + +#ifndef HAVE_MMAP + #define HAVE_MMAP 1 +#endif /* HAVE_MMAP */ + +#ifndef MMAP_CLEARS + #define MMAP_CLEARS 1 +#endif /* MMAP_CLEARS */ + +#ifndef HAVE_MREMAP + #ifdef linux + #define HAVE_MREMAP 1 + #else /* linux */ + #define HAVE_MREMAP 0 + #endif /* linux */ +#endif /* HAVE_MREMAP */ + +#ifndef MALLOC_FAILURE_ACTION + //#define MALLOC_FAILURE_ACTION errno = ENOMEM; + #define MALLOC_FAILURE_ACTION ; +#endif /* MALLOC_FAILURE_ACTION */ + +#ifndef HAVE_MORECORE + #if ONLY_MSPACES + #define HAVE_MORECORE 1 /*AMOD: has changed */ + #else /* ONLY_MSPACES */ + #define HAVE_MORECORE 1 + #endif /* ONLY_MSPACES */ +#endif /* HAVE_MORECORE */ + +#if !HAVE_MORECORE + #define MORECORE_CONTIGUOUS 0 +#else /* !HAVE_MORECORE */ + #ifndef MORECORE + #define MORECORE DLAdjust + #endif /* MORECORE */ + #ifndef MORECORE_CONTIGUOUS + #define MORECORE_CONTIGUOUS 0 + #endif /* MORECORE_CONTIGUOUS */ +#endif /* !HAVE_MORECORE */ + +#ifndef DEFAULT_GRANULARITY + #if MORECORE_CONTIGUOUS + #define DEFAULT_GRANULARITY 4096 /* 0 means to compute in init_mparams */ + #else /* MORECORE_CONTIGUOUS */ + #define DEFAULT_GRANULARITY ((size_t)64U * (size_t)1024U) + #endif /* MORECORE_CONTIGUOUS */ +#endif /* DEFAULT_GRANULARITY */ + +#ifndef DEFAULT_TRIM_THRESHOLD + #ifndef MORECORE_CANNOT_TRIM + #define DEFAULT_TRIM_THRESHOLD ((size_t)2U * (size_t)1024U * (size_t)1024U) + #else /* MORECORE_CANNOT_TRIM */ + #define DEFAULT_TRIM_THRESHOLD MAX_SIZE_T + #endif /* MORECORE_CANNOT_TRIM */ +#endif /* DEFAULT_TRIM_THRESHOLD */ + +#ifndef DEFAULT_MMAP_THRESHOLD + #if HAVE_MMAP + #define DEFAULT_MMAP_THRESHOLD ((size_t)256U * (size_t)1024U) + #else /* HAVE_MMAP */ + #define DEFAULT_MMAP_THRESHOLD MAX_SIZE_T + #endif /* HAVE_MMAP */ +#endif /* DEFAULT_MMAP_THRESHOLD */ + +#ifndef USE_BUILTIN_FFS + #define USE_BUILTIN_FFS 0 +#endif /* USE_BUILTIN_FFS */ + +#ifndef USE_DEV_RANDOM + #define USE_DEV_RANDOM 0 +#endif /* USE_DEV_RANDOM */ + +#ifndef NO_MALLINFO + #define NO_MALLINFO 0 +#endif /* NO_MALLINFO */ +#ifndef MALLINFO_FIELD_TYPE + #define MALLINFO_FIELD_TYPE size_t +#endif /* MALLINFO_FIELD_TYPE */ + +/* + mallopt tuning options. SVID/XPG defines four standard parameter + numbers for mallopt, normally defined in malloc.h. None of these + are used in this malloc, so setting them has no effect. But this + malloc does support the following options. +*/ + +#define M_TRIM_THRESHOLD (-1) +#define M_GRANULARITY (-2) +#define M_MMAP_THRESHOLD (-3) + +#if !NO_MALLINFO +/* + This version of malloc supports the standard SVID/XPG mallinfo + routine that returns a struct containing usage properties and + statistics. It should work on any system that has a + /usr/include/malloc.h defining struct mallinfo. The main + declaration needed is the mallinfo struct that is returned (by-copy) + by mallinfo(). The malloinfo struct contains a bunch of fields that + are not even meaningful in this version of malloc. These fields are + are instead filled by mallinfo() with other numbers that might be of + interest. + + HAVE_USR_INCLUDE_MALLOC_H should be set if you have a + /usr/include/malloc.h file that includes a declaration of struct + mallinfo. If so, it is included; else a compliant version is + declared below. These must be precisely the same for mallinfo() to + work. The original SVID version of this struct, defined on most + systems with mallinfo, declares all fields as ints. But some others + define as unsigned long. If your system defines the fields using a + type of different width than listed here, you MUST #include your + system version and #define HAVE_USR_INCLUDE_MALLOC_H. +*/ + +/* #define HAVE_USR_INCLUDE_MALLOC_H */ + +#ifdef HAVE_USR_INCLUDE_MALLOC_H +#include "/usr/include/malloc.h" +#else /* HAVE_USR_INCLUDE_MALLOC_H */ + +struct mallinfo { + MALLINFO_FIELD_TYPE iArena; /* non-mmapped space allocated from system */ + MALLINFO_FIELD_TYPE iOrdblks; /* number of free chunks */ + MALLINFO_FIELD_TYPE iSmblks; /* always 0 */ + MALLINFO_FIELD_TYPE iHblks; /* always 0 */ + MALLINFO_FIELD_TYPE iHblkhd; /* space in mmapped regions */ + MALLINFO_FIELD_TYPE iUsmblks; /* maximum total allocated space */ + MALLINFO_FIELD_TYPE iFsmblks; /* always 0 */ + MALLINFO_FIELD_TYPE iUordblks; /* total allocated space */ + MALLINFO_FIELD_TYPE iFordblks; /* total free space */ + MALLINFO_FIELD_TYPE iKeepcost; /* releasable (via malloc_trim) space */ + MALLINFO_FIELD_TYPE iCellCount;/* Number of chunks allocated*/ +}; + +#endif /* HAVE_USR_INCLUDE_MALLOC_H */ +#endif /* NO_MALLINFO */ + +#if MSPACES + typedef void* mspace; +#endif /* MSPACES */ + +#if 0 + +#include <stdio.h>/* for printing in malloc_stats */ + +#ifndef LACKS_ERRNO_H + #include <errno.h> /* for MALLOC_FAILURE_ACTION */ +#endif /* LACKS_ERRNO_H */ + +#if FOOTERS + #include <time.h> /* for iMagic initialization */ +#endif /* FOOTERS */ + +#ifndef LACKS_STDLIB_H + #include <stdlib.h> /* for abort() */ +#endif /* LACKS_STDLIB_H */ + +#if !defined(ASSERT) +#define ASSERT(x) __ASSERT_DEBUG(x, HEAP_PANIC(ETHeapBadCellAddress)) +#endif + +#ifndef LACKS_STRING_H + #include <string.h> /* for memset etc */ +#endif /* LACKS_STRING_H */ + +#if USE_BUILTIN_FFS + #ifndef LACKS_STRINGS_H + #include <strings.h> /* for ffs */ + #endif /* LACKS_STRINGS_H */ +#endif /* USE_BUILTIN_FFS */ + +#if HAVE_MMAP + #ifndef LACKS_SYS_MMAN_H + #include <sys/mman.h> /* for mmap */ + #endif /* LACKS_SYS_MMAN_H */ + #ifndef LACKS_FCNTL_H + #include <fcntl.h> + #endif /* LACKS_FCNTL_H */ +#endif /* HAVE_MMAP */ + +#if HAVE_MORECORE + #ifndef LACKS_UNISTD_H + #include <unistd.h> /* for sbrk */ + extern void* sbrk(size_t); + #else /* LACKS_UNISTD_H */ + #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) + extern void* sbrk(ptrdiff_t); + /*Amod sbrk is not defined in WIN32 need to check in symbian*/ + #endif /* FreeBSD etc */ + #endif /* LACKS_UNISTD_H */ +#endif /* HAVE_MORECORE */ + +#endif + +/*AMOD: For MALLOC_GETPAGESIZE*/ +#if 0 // replaced with GET_PAGE_SIZE() defined in heap.cpp +#ifndef WIN32 + #ifndef MALLOC_GETPAGESIZE + #ifdef _SC_PAGESIZE /* some SVR4 systems omit an underscore */ + #ifndef _SC_PAGE_SIZE + #define _SC_PAGE_SIZE _SC_PAGESIZE + #endif + #endif + #ifdef _SC_PAGE_SIZE + #define MALLOC_GETPAGESIZE sysconf(_SC_PAGE_SIZE) + #else + #if defined(BSD) || defined(DGUX) || defined(HAVE_GETPAGESIZE) + extern size_t getpagesize(); + #define MALLOC_GETPAGESIZE getpagesize() + #else + #ifdef WIN32 /* use supplied emulation of getpagesize */ + #define MALLOC_GETPAGESIZE getpagesize() + #else + #ifndef LACKS_SYS_PARAM_H + #include <sys/param.h> + #endif + #ifdef EXEC_PAGESIZE + #define MALLOC_GETPAGESIZE EXEC_PAGESIZE + #else + #ifdef NBPG + #ifndef CLSIZE + #define MALLOC_GETPAGESIZE NBPG + #else + #define MALLOC_GETPAGESIZE (NBPG * CLSIZE) + #endif + #else + #ifdef NBPC + #define MALLOC_GETPAGESIZE NBPC + #else + #ifdef PAGESIZE + #define MALLOC_GETPAGESIZE PAGESIZE + #else /* just guess */ + #define MALLOC_GETPAGESIZE ((size_t)4096U) + #endif + #endif + #endif + #endif + #endif + #endif + #endif + #endif +#endif +#endif +/*AMOD: For MALLOC_GETPAGESIZE*/ + +/* ------------------- size_t and alignment properties -------------------- */ + +/* The byte and bit size of a size_t */ +#define SIZE_T_SIZE (sizeof(size_t)) +#define SIZE_T_BITSIZE (sizeof(size_t) << 3) + +/* Some constants coerced to size_t */ +/* Annoying but necessary to avoid errors on some plaftorms */ +#define SIZE_T_ZERO ((size_t)0) +#define SIZE_T_ONE ((size_t)1) +#define SIZE_T_TWO ((size_t)2) +#define TWO_SIZE_T_SIZES (SIZE_T_SIZE<<1) +#define FOUR_SIZE_T_SIZES (SIZE_T_SIZE<<2) +#define SIX_SIZE_T_SIZES (FOUR_SIZE_T_SIZES+TWO_SIZE_T_SIZES) +#define HALF_MAX_SIZE_T (MAX_SIZE_T / 2U) + +/* The bit mask value corresponding to MALLOC_ALIGNMENT */ +#define CHUNK_ALIGN_MASK (MALLOC_ALIGNMENT - SIZE_T_ONE) + +/* True if address a has acceptable alignment */ +//#define IS_ALIGNED(A) (((size_t)((A)) & (CHUNK_ALIGN_MASK)) == 0) +#define IS_ALIGNED(A) (((unsigned int)((A)) & (CHUNK_ALIGN_MASK)) == 0) + +/* the number of bytes to offset an address to align it */ +#define ALIGN_OFFSET(A)\ + ((((size_t)(A) & CHUNK_ALIGN_MASK) == 0)? 0 :\ + ((MALLOC_ALIGNMENT - ((size_t)(A) & CHUNK_ALIGN_MASK)) & CHUNK_ALIGN_MASK)) + +/* -------------------------- MMAP preliminaries ------------------------- */ + +/* + If HAVE_MORECORE or HAVE_MMAP are false, we just define calls and + checks to fail so compiler optimizer can delete code rather than + using so many "#if"s. +*/ + + +/* MORECORE and MMAP must return MFAIL on failure */ +#define MFAIL ((void*)(MAX_SIZE_T)) +#define CMFAIL ((TUint8*)(MFAIL)) /* defined for convenience */ + +#if !HAVE_MMAP + #define IS_MMAPPED_BIT (SIZE_T_ZERO) + #define USE_MMAP_BIT (SIZE_T_ZERO) + #define CALL_MMAP(s) MFAIL + #define CALL_MUNMAP(a, s) (-1) + #define DIRECT_MMAP(s) MFAIL +#else /* !HAVE_MMAP */ + #define IS_MMAPPED_BIT (SIZE_T_ONE) + #define USE_MMAP_BIT (SIZE_T_ONE) + #ifndef WIN32 + #define CALL_MUNMAP(a, s) DLUMMAP((a),(s)) /*munmap((a), (s))*/ + #define MMAP_PROT (PROT_READ|PROT_WRITE) + #if !defined(MAP_ANONYMOUS) && defined(MAP_ANON) + #define MAP_ANONYMOUS MAP_ANON + #endif /* MAP_ANON */ + #ifdef MAP_ANONYMOUS + #define MMAP_FLAGS (MAP_PRIVATE|MAP_ANONYMOUS) + #define CALL_MMAP(s) mmap(0, (s), MMAP_PROT, (int)MMAP_FLAGS, -1, 0) + #else /* MAP_ANONYMOUS */ + /* + Nearly all versions of mmap support MAP_ANONYMOUS, so the following + is unlikely to be needed, but is supplied just in case. + */ + #define MMAP_FLAGS (MAP_PRIVATE) + //static int dev_zero_fd = -1; /* Cached file descriptor for /dev/zero. */ + #define CALL_MMAP(s) DLMMAP(s) + /*#define CALL_MMAP(s) ((dev_zero_fd < 0) ? \ + (dev_zero_fd = open("/dev/zero", O_RDWR), \ + mmap(0, (s), MMAP_PROT, MMAP_FLAGS, dev_zero_fd, 0)) : \ + mmap(0, (s), MMAP_PROT, MMAP_FLAGS, dev_zero_fd, 0)) + */ + #define CALL_REMAP(a, s, d) DLREMAP((a),(s),(d)) + #endif /* MAP_ANONYMOUS */ + #define DIRECT_MMAP(s) CALL_MMAP(s) + #else /* WIN32 */ + #define CALL_MMAP(s) win32mmap(s) + #define CALL_MUNMAP(a, s) win32munmap((a), (s)) + #define DIRECT_MMAP(s) win32direct_mmap(s) + #endif /* WIN32 */ +#endif /* HAVE_MMAP */ + +#if HAVE_MMAP && HAVE_MREMAP + #define CALL_MREMAP(addr, osz, nsz, mv) mremap((addr), (osz), (nsz), (mv)) +#else /* HAVE_MMAP && HAVE_MREMAP */ + #define CALL_MREMAP(addr, osz, nsz, mv) MFAIL +#endif /* HAVE_MMAP && HAVE_MREMAP */ + +#if HAVE_MORECORE + #define CALL_MORECORE(S) SetBrk(S) +#else /* HAVE_MORECORE */ + #define CALL_MORECORE(S) MFAIL +#endif /* HAVE_MORECORE */ + +/* mstate bit set if continguous morecore disabled or failed */ +#define USE_NONCONTIGUOUS_BIT (4U) + +/* segment bit set in create_mspace_with_base */ +#define EXTERN_BIT (8U) + + +#if USE_LOCKS +/* + When locks are defined, there are up to two global locks: + * If HAVE_MORECORE, iMorecoreMutex protects sequences of calls to + MORECORE. In many cases sys_alloc requires two calls, that should + not be interleaved with calls by other threads. This does not + protect against direct calls to MORECORE by other threads not + using this lock, so there is still code to cope the best we can on + interference. + * iMagicInitMutex ensures that mparams.iMagic and other + unique mparams values are initialized only once. +*/ + #ifndef WIN32 + /* By default use posix locks */ + #include <pthread.h> + #define MLOCK_T pthread_mutex_t + #define INITIAL_LOCK(l) pthread_mutex_init(l, NULL) + #define ACQUIRE_LOCK(l) pthread_mutex_lock(l) + #define RELEASE_LOCK(l) pthread_mutex_unlock(l) + + #if HAVE_MORECORE + //static MLOCK_T iMorecoreMutex = PTHREAD_MUTEX_INITIALIZER; + #endif /* HAVE_MORECORE */ + //static MLOCK_T iMagicInitMutex = PTHREAD_MUTEX_INITIALIZER; + #else /* WIN32 */ + #define MLOCK_T long + #define INITIAL_LOCK(l) *(l)=0 + #define ACQUIRE_LOCK(l) win32_acquire_lock(l) + #define RELEASE_LOCK(l) win32_release_lock(l) + #if HAVE_MORECORE + static MLOCK_T iMorecoreMutex; + #endif /* HAVE_MORECORE */ + static MLOCK_T iMagicInitMutex; + #endif /* WIN32 */ + #define USE_LOCK_BIT (2U) +#else /* USE_LOCKS */ + #define USE_LOCK_BIT (0U) + #define INITIAL_LOCK(l) +#endif /* USE_LOCKS */ + +#if USE_LOCKS && HAVE_MORECORE + #define ACQUIRE_MORECORE_LOCK(M) ACQUIRE_LOCK((M->iMorecoreMutex)/*&iMorecoreMutex*/); + #define RELEASE_MORECORE_LOCK(M) RELEASE_LOCK((M->iMorecoreMutex)/*&iMorecoreMutex*/); +#else /* USE_LOCKS && HAVE_MORECORE */ + #define ACQUIRE_MORECORE_LOCK(M) + #define RELEASE_MORECORE_LOCK(M) +#endif /* USE_LOCKS && HAVE_MORECORE */ + +#if USE_LOCKS + /*Currently not suporting this*/ + #define ACQUIRE_MAGIC_INIT_LOCK(M) ACQUIRE_LOCK(((M)->iMagicInitMutex)); + //AMOD: changed #define ACQUIRE_MAGIC_INIT_LOCK() + //#define RELEASE_MAGIC_INIT_LOCK() + #define RELEASE_MAGIC_INIT_LOCK(M) RELEASE_LOCK(((M)->iMagicInitMutex)); +#else /* USE_LOCKS */ + #define ACQUIRE_MAGIC_INIT_LOCK(M) + #define RELEASE_MAGIC_INIT_LOCK(M) +#endif /* USE_LOCKS */ + +/*CHUNK representation*/ +struct malloc_chunk { + size_t iPrevFoot; /* Size of previous chunk (if free). */ + size_t iHead; /* Size and inuse bits. */ + struct malloc_chunk* iFd; /* double links -- used only if free. */ + struct malloc_chunk* iBk; +}; + +typedef struct malloc_chunk mchunk; +typedef struct malloc_chunk* mchunkptr; +typedef struct malloc_chunk* sbinptr; /* The type of bins of chunks */ +typedef unsigned int bindex_t; /* Described below */ +typedef unsigned int binmap_t; /* Described below */ +typedef unsigned int flag_t; /* The type of various bit flag sets */ + + +/* ------------------- Chunks sizes and alignments ----------------------- */ +#define MCHUNK_SIZE (sizeof(mchunk)) + +//#if FOOTERS +// #define CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) +//#else /* FOOTERS */ +// #define CHUNK_OVERHEAD (SIZE_T_SIZE) +//#endif /* FOOTERS */ + +/* MMapped chunks need a second word of overhead ... */ +#define MMAP_CHUNK_OVERHEAD (TWO_SIZE_T_SIZES) +/* ... and additional padding for fake next-chunk at foot */ +#define MMAP_FOOT_PAD (FOUR_SIZE_T_SIZES) + +/* The smallest size we can malloc is an aligned minimal chunk */ +#define MIN_CHUNK_SIZE ((MCHUNK_SIZE + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) + +/* conversion from malloc headers to user pointers, and back */ +#define CHUNK2MEM(p) ((void*)((TUint8*)(p) + TWO_SIZE_T_SIZES)) +#define MEM2CHUNK(mem) ((mchunkptr)((TUint8*)(mem) - TWO_SIZE_T_SIZES)) +/* chunk associated with aligned address A */ +#define ALIGN_AS_CHUNK(A) (mchunkptr)((A) + ALIGN_OFFSET(CHUNK2MEM(A))) + +/* Bounds on request (not chunk) sizes. */ +#define MAX_REQUEST ((-MIN_CHUNK_SIZE) << 2) +#define MIN_REQUEST (MIN_CHUNK_SIZE - CHUNK_OVERHEAD - SIZE_T_ONE) + +/* pad request bytes into a usable size */ +#define PAD_REQUEST(req) (((req) + CHUNK_OVERHEAD + CHUNK_ALIGN_MASK) & ~CHUNK_ALIGN_MASK) + +/* pad request, checking for minimum (but not maximum) */ +#define REQUEST2SIZE(req) (((req) < MIN_REQUEST)? MIN_CHUNK_SIZE : PAD_REQUEST(req)) + +/* ------------------ Operations on iHead and foot fields ----------------- */ + +/* + The iHead field of a chunk is or'ed with PINUSE_BIT when previous + adjacent chunk in use, and or'ed with CINUSE_BIT if this chunk is in + use. If the chunk was obtained with mmap, the iPrevFoot field has + IS_MMAPPED_BIT set, otherwise holding the offset of the base of the + mmapped region to the base of the chunk. +*/ +#define PINUSE_BIT (SIZE_T_ONE) +#define CINUSE_BIT (SIZE_T_TWO) +#define INUSE_BITS (PINUSE_BIT|CINUSE_BIT) + +/* Head value for fenceposts */ +#define FENCEPOST_HEAD (INUSE_BITS|SIZE_T_SIZE) + +/* extraction of fields from iHead words */ +#define CINUSE(p) ((p)->iHead & CINUSE_BIT) +#define PINUSE(p) ((p)->iHead & PINUSE_BIT) +#define CHUNKSIZE(p) ((p)->iHead & ~(INUSE_BITS)) + +#define CLEAR_PINUSE(p) ((p)->iHead &= ~PINUSE_BIT) +#define CLEAR_CINUSE(p) ((p)->iHead &= ~CINUSE_BIT) + +/* Treat space at ptr +/- offset as a chunk */ +#define CHUNK_PLUS_OFFSET(p, s) ((mchunkptr)(((TUint8*)(p)) + (s))) +#define CHUNK_MINUS_OFFSET(p, s) ((mchunkptr)(((TUint8*)(p)) - (s))) + +/* Ptr to next or previous physical malloc_chunk. */ +#define NEXT_CHUNK(p) ((mchunkptr)( ((TUint8*)(p)) + ((p)->iHead & ~INUSE_BITS))) +#define PREV_CHUNK(p) ((mchunkptr)( ((TUint8*)(p)) - ((p)->iPrevFoot) )) + +/* extract next chunk's PINUSE bit */ +#define NEXT_PINUSE(p) ((NEXT_CHUNK(p)->iHead) & PINUSE_BIT) + +/* Get/set size at footer */ +#define GET_FOOT(p, s) (((mchunkptr)((TUint8*)(p) + (s)))->iPrevFoot) +#define SET_FOOT(p, s) (((mchunkptr)((TUint8*)(p) + (s)))->iPrevFoot = (s)) + +/* Set size, PINUSE bit, and foot */ +#define SET_SIZE_AND_PINUSE_OF_FREE_CHUNK(p, s) ((p)->iHead = (s|PINUSE_BIT), SET_FOOT(p, s)) + +/* Set size, PINUSE bit, foot, and clear next PINUSE */ +#define SET_FREE_WITH_PINUSE(p, s, n) (CLEAR_PINUSE(n), SET_SIZE_AND_PINUSE_OF_FREE_CHUNK(p, s)) + +#define IS_MMAPPED(p) (!((p)->iHead & PINUSE_BIT) && ((p)->iPrevFoot & IS_MMAPPED_BIT)) + +/* Get the internal overhead associated with chunk p */ +#define OVERHEAD_FOR(p) (IS_MMAPPED(p)? MMAP_CHUNK_OVERHEAD : CHUNK_OVERHEAD) + +/* Return true if malloced space is not necessarily cleared */ +#if MMAP_CLEARS + #define CALLOC_MUST_CLEAR(p) (!IS_MMAPPED(p)) +#else /* MMAP_CLEARS */ + #define CALLOC_MUST_CLEAR(p) (1) +#endif /* MMAP_CLEARS */ + +/* ---------------------- Overlaid data structures ----------------------- */ +struct malloc_tree_chunk { + /* The first four fields must be compatible with malloc_chunk */ + size_t iPrevFoot; + size_t iHead; + struct malloc_tree_chunk* iFd; + struct malloc_tree_chunk* iBk; + + struct malloc_tree_chunk* iChild[2]; + struct malloc_tree_chunk* iParent; + bindex_t iIndex; +}; + +typedef struct malloc_tree_chunk tchunk; +typedef struct malloc_tree_chunk* tchunkptr; +typedef struct malloc_tree_chunk* tbinptr; /* The type of bins of trees */ + +/* A little helper macro for trees */ +#define LEFTMOST_CHILD(t) ((t)->iChild[0] != 0? (t)->iChild[0] : (t)->iChild[1]) +/*Segment structur*/ +//struct malloc_segment { +// TUint8* iBase; /* base address */ +// size_t iSize; /* allocated size */ +//}; + +#define IS_MMAPPED_SEGMENT(S) ((S)->iSflags & IS_MMAPPED_BIT) +#define IS_EXTERN_SEGMENT(S) ((S)->iSflags & EXTERN_BIT) + +typedef struct malloc_segment msegment; +typedef struct malloc_segment* msegmentptr; + +/*Malloc State data structur*/ + +//#define NSMALLBINS (32U) +//#define NTREEBINS (32U) +#define SMALLBIN_SHIFT (3U) +#define SMALLBIN_WIDTH (SIZE_T_ONE << SMALLBIN_SHIFT) +#define TREEBIN_SHIFT (8U) +#define MIN_LARGE_SIZE (SIZE_T_ONE << TREEBIN_SHIFT) +#define MAX_SMALL_SIZE (MIN_LARGE_SIZE - SIZE_T_ONE) +#define MAX_SMALL_REQUEST (MAX_SMALL_SIZE - CHUNK_ALIGN_MASK - CHUNK_OVERHEAD) + +/*struct malloc_state { + binmap_t iSmallMap; + binmap_t iTreeMap; + size_t iDvSize; + size_t iTopSize; + mchunkptr iDv; + mchunkptr iTop; + size_t iTrimCheck; + mchunkptr iSmallBins[(NSMALLBINS+1)*2]; + tbinptr iTreeBins[NTREEBINS]; + msegment iSeg; + };*/ +/* +struct malloc_state { + binmap_t iSmallMap; + binmap_t iTreeMap; + size_t iDvSize; + size_t iTopSize; + TUint8* iLeastAddr; + mchunkptr iDv; + mchunkptr iTop; + size_t iTrimCheck; + size_t iMagic; + mchunkptr iSmallBins[(NSMALLBINS+1)*2]; + tbinptr iTreeBins[NTREEBINS]; + size_t iFootprint; + size_t iMaxFootprint; + flag_t iMflags; +#if USE_LOCKS + MLOCK_T iMutex; + MLOCK_T iMagicInitMutex; + MLOCK_T iMorecoreMutex; +#endif + msegment iSeg; +}; +*/ +typedef struct malloc_state* mstate; + +/* ------------- Global malloc_state and malloc_params ------------------- */ + +/* + malloc_params holds global properties, including those that can be + dynamically set using mallopt. There is a single instance, mparams, + initialized in init_mparams. +*/ + +struct malloc_params { + size_t iMagic; + size_t iPageSize; + size_t iGranularity; + size_t iMmapThreshold; + size_t iTrimThreshold; + flag_t iDefaultMflags; +#if USE_LOCKS + MLOCK_T iMagicInitMutex; +#endif /* USE_LOCKS */ +}; + +/* The global malloc_state used for all non-"mspace" calls */ +/*AMOD: Need to check this as this will be the member of the class*/ + +//static struct malloc_state _gm_; +//#define GM (&_gm_) + +//#define IS_GLOBAL(M) ((M) == &_gm_) +/*AMOD: has changed*/ +#define IS_GLOBAL(M) ((M) == GM) +#define IS_INITIALIZED(M) ((M)->iTop != 0) + +/* -------------------------- system alloc setup ------------------------- */ + +/* Operations on iMflags */ + +#define USE_LOCK(M) ((M)->iMflags & USE_LOCK_BIT) +#define ENABLE_LOCK(M) ((M)->iMflags |= USE_LOCK_BIT) +#define DISABLE_LOCK(M) ((M)->iMflags &= ~USE_LOCK_BIT) + +#define USE_MMAP(M) ((M)->iMflags & USE_MMAP_BIT) +#define ENABLE_MMAP(M) ((M)->iMflags |= USE_MMAP_BIT) +#define DISABLE_MMAP(M) ((M)->iMflags &= ~USE_MMAP_BIT) + +#define USE_NONCONTIGUOUS(M) ((M)->iMflags & USE_NONCONTIGUOUS_BIT) +#define DISABLE_CONTIGUOUS(M) ((M)->iMflags |= USE_NONCONTIGUOUS_BIT) + +#define SET_LOCK(M,L) ((M)->iMflags = (L)? ((M)->iMflags | USE_LOCK_BIT) : ((M)->iMflags & ~USE_LOCK_BIT)) + +/* page-align a size */ +#define PAGE_ALIGN(S) (((S) + (mparams.iPageSize)) & ~(mparams.iPageSize - SIZE_T_ONE)) + +/* iGranularity-align a size */ +#define GRANULARITY_ALIGN(S) (((S) + (mparams.iGranularity)) & ~(mparams.iGranularity - SIZE_T_ONE)) + +#define IS_PAGE_ALIGNED(S) (((size_t)(S) & (mparams.iPageSize - SIZE_T_ONE)) == 0) +#define IS_GRANULARITY_ALIGNED(S) (((size_t)(S) & (mparams.iGranularity - SIZE_T_ONE)) == 0) + +/* True if segment S holds address A */ +#define SEGMENT_HOLDS(S, A) ((TUint8*)(A) >= S->iBase && (TUint8*)(A) < S->iBase + S->iSize) + +#ifndef MORECORE_CANNOT_TRIM + #define SHOULD_TRIM(M,s) ((s) > (M)->iTrimCheck) +#else /* MORECORE_CANNOT_TRIM */ + #define SHOULD_TRIM(M,s) (0) +#endif /* MORECORE_CANNOT_TRIM */ + +/* + TOP_FOOT_SIZE is padding at the end of a segment, including space + that may be needed to place segment records and fenceposts when new + noncontiguous segments are added. +*/ +#define TOP_FOOT_SIZE (ALIGN_OFFSET(CHUNK2MEM(0))+PAD_REQUEST(sizeof(struct malloc_segment))+MIN_CHUNK_SIZE) + +#define SYS_ALLOC_PADDING (TOP_FOOT_SIZE + MALLOC_ALIGNMENT) +/* ------------------------------- Hooks -------------------------------- */ + +/* + PREACTION should be defined to return 0 on success, and nonzero on + failure. If you are not using locking, you can redefine these to do + anything you like. +*/ + +#if USE_LOCKS + /* Ensure locks are initialized */ + #define GLOBALLY_INITIALIZE() (mparams.iPageSize == 0 && init_mparams()) + #define PREACTION(M) (USE_LOCK((M))?(ACQUIRE_LOCK((M)->iMutex),0):0) /*Action to take like lock before alloc*/ + #define POSTACTION(M) { if (USE_LOCK(M)) RELEASE_LOCK((M)->iMutex); } + +#else /* USE_LOCKS */ + #ifndef PREACTION + #define PREACTION(M) (0) + #endif /* PREACTION */ + #ifndef POSTACTION + #define POSTACTION(M) + #endif /* POSTACTION */ +#endif /* USE_LOCKS */ + +/* + CORRUPTION_ERROR_ACTION is triggered upon detected bad addresses. + USAGE_ERROR_ACTION is triggered on detected bad frees and + reallocs. The argument p is an address that might have triggered the + fault. It is ignored by the two predefined actions, but might be + useful in custom actions that try to help diagnose errors. +*/ + +#if PROCEED_ON_ERROR + /* A count of the number of corruption errors causing resets */ + int malloc_corruption_error_count; + /* default corruption action */ + static void ResetOnError(mstate m); + #define CORRUPTION_ERROR_ACTION(m) ResetOnError(m) + #define USAGE_ERROR_ACTION(m, p) +#else /* PROCEED_ON_ERROR */ + #ifndef CORRUPTION_ERROR_ACTION + #define CORRUPTION_ERROR_ACTION(m) ABORT + #endif /* CORRUPTION_ERROR_ACTION */ + #ifndef USAGE_ERROR_ACTION + #define USAGE_ERROR_ACTION(m,p) ABORT + #endif /* USAGE_ERROR_ACTION */ +#endif /* PROCEED_ON_ERROR */ + + +#ifdef _DEBUG + #define CHECK_FREE_CHUNK(M,P) DoCheckFreeChunk(M,P) + #define CHECK_INUSE_CHUNK(M,P) DoCheckInuseChunk(M,P) + #define CHECK_TOP_CHUNK(M,P) DoCheckTopChunk(M,P) + #define CHECK_MALLOCED_CHUNK(M,P,N) DoCheckMallocedChunk(M,P,N) + #define CHECK_MMAPPED_CHUNK(M,P) DoCheckMmappedChunk(M,P) + #define CHECK_MALLOC_STATE(M) DoCheckMallocState(M) +#else /* DEBUG */ + #define CHECK_FREE_CHUNK(M,P) + #define CHECK_INUSE_CHUNK(M,P) + #define CHECK_MALLOCED_CHUNK(M,P,N) + #define CHECK_MMAPPED_CHUNK(M,P) + #define CHECK_MALLOC_STATE(M) + #define CHECK_TOP_CHUNK(M,P) +#endif /* DEBUG */ + +/* ---------------------------- Indexing Bins ---------------------------- */ + +#define IS_SMALL(s) (((s) >> SMALLBIN_SHIFT) < NSMALLBINS) +#define SMALL_INDEX(s) ((s) >> SMALLBIN_SHIFT) +#define SMALL_INDEX2SIZE(i) ((i) << SMALLBIN_SHIFT) +#define MIN_SMALL_INDEX (SMALL_INDEX(MIN_CHUNK_SIZE)) + +/* addressing by index. See above about smallbin repositioning */ +#define SMALLBIN_AT(M, i) ((sbinptr)((TUint8*)&((M)->iSmallBins[(i)<<1]))) +#define TREEBIN_AT(M,i) (&((M)->iTreeBins[i])) + + +/* Bit representing maximum resolved size in a treebin at i */ +#define BIT_FOR_TREE_INDEX(i) (i == NTREEBINS-1)? (SIZE_T_BITSIZE-1) : (((i) >> 1) + TREEBIN_SHIFT - 2) + +/* Shift placing maximum resolved bit in a treebin at i as sign bit */ +#define LEFTSHIFT_FOR_TREE_INDEX(i) ((i == NTREEBINS-1)? 0 : ((SIZE_T_BITSIZE-SIZE_T_ONE) - (((i) >> 1) + TREEBIN_SHIFT - 2))) + +/* The size of the smallest chunk held in bin with index i */ +#define MINSIZE_FOR_TREE_INDEX(i) ((SIZE_T_ONE << (((i) >> 1) + TREEBIN_SHIFT)) | (((size_t)((i) & SIZE_T_ONE)) << (((i) >> 1) + TREEBIN_SHIFT - 1))) + + +/* ------------------------ Operations on bin maps ----------------------- */ +/* bit corresponding to given index */ +#define IDX2BIT(i) ((binmap_t)(1) << (i)) +/* Mark/Clear bits with given index */ +#define MARK_SMALLMAP(M,i) ((M)->iSmallMap |= IDX2BIT(i)) +#define CLEAR_SMALLMAP(M,i) ((M)->iSmallMap &= ~IDX2BIT(i)) +#define SMALLMAP_IS_MARKED(M,i) ((M)->iSmallMap & IDX2BIT(i)) +#define MARK_TREEMAP(M,i) ((M)->iTreeMap |= IDX2BIT(i)) +#define CLEAR_TREEMAP(M,i) ((M)->iTreeMap &= ~IDX2BIT(i)) +#define TREEMAP_IS_MARKED(M,i) ((M)->iTreeMap & IDX2BIT(i)) + + /* isolate the least set bit of a bitmap */ +#define LEAST_BIT(x) ((x) & -(x)) + +/* mask with all bits to left of least bit of x on */ +#define LEFT_BITS(x) ((x<<1) | -(x<<1)) + +/* mask with all bits to left of or equal to least bit of x on */ +#define SAME_OR_LEFT_BITS(x) ((x) | -(x)) + +#if !INSECURE + /* Check if address a is at least as high as any from MORECORE or MMAP */ + #define OK_ADDRESS(M, a) ((TUint8*)(a) >= (M)->iLeastAddr) + /* Check if address of next chunk n is higher than base chunk p */ + #define OK_NEXT(p, n) ((TUint8*)(p) < (TUint8*)(n)) + /* Check if p has its CINUSE bit on */ + #define OK_CINUSE(p) CINUSE(p) + /* Check if p has its PINUSE bit on */ + #define OK_PINUSE(p) PINUSE(p) +#else /* !INSECURE */ + #define OK_ADDRESS(M, a) (1) + #define OK_NEXT(b, n) (1) + #define OK_CINUSE(p) (1) + #define OK_PINUSE(p) (1) +#endif /* !INSECURE */ + +#if (FOOTERS && !INSECURE) + /* Check if (alleged) mstate m has expected iMagic field */ + #define OK_MAGIC(M) ((M)->iMagic == mparams.iMagic) +#else /* (FOOTERS && !INSECURE) */ + #define OK_MAGIC(M) (1) +#endif /* (FOOTERS && !INSECURE) */ + +/* In gcc, use __builtin_expect to minimize impact of checks */ +#if !INSECURE + #if defined(__GNUC__) && __GNUC__ >= 3 + #define RTCHECK(e) __builtin_expect(e, 1) + #else /* GNUC */ + #define RTCHECK(e) (e) + #endif /* GNUC */ + +#else /* !INSECURE */ + #define RTCHECK(e) (1) +#endif /* !INSECURE */ +/* macros to set up inuse chunks with or without footers */ +#if !FOOTERS + #define MARK_INUSE_FOOT(M,p,s) + /* Set CINUSE bit and PINUSE bit of next chunk */ + #define SET_INUSE(M,p,s) ((p)->iHead = (((p)->iHead & PINUSE_BIT)|s|CINUSE_BIT),((mchunkptr)(((TUint8*)(p)) + (s)))->iHead |= PINUSE_BIT) + /* Set CINUSE and PINUSE of this chunk and PINUSE of next chunk */ + #define SET_INUSE_AND_PINUSE(M,p,s) ((p)->iHead = (s|PINUSE_BIT|CINUSE_BIT),((mchunkptr)(((TUint8*)(p)) + (s)))->iHead |= PINUSE_BIT) + /* Set size, CINUSE and PINUSE bit of this chunk */ + #define SET_SIZE_AND_PINUSE_OF_INUSE_CHUNK(M, p, s) ((p)->iHead = (s|PINUSE_BIT|CINUSE_BIT)) +#else /* FOOTERS */ + /* Set foot of inuse chunk to be xor of mstate and seed */ + #define MARK_INUSE_FOOT(M,p,s) (((mchunkptr)((TUint8*)(p) + (s)))->iPrevFoot = ((size_t)(M) ^ mparams.iMagic)) + #define GET_MSTATE_FOR(p) ((mstate)(((mchunkptr)((TUint8*)(p)+(CHUNKSIZE(p))))->iPrevFoot ^ mparams.iMagic)) + #define SET_INUSE(M,p,s)\ + ((p)->iHead = (((p)->iHead & PINUSE_BIT)|s|CINUSE_BIT),\ + (((mchunkptr)(((TUint8*)(p)) + (s)))->iHead |= PINUSE_BIT), \ + MARK_INUSE_FOOT(M,p,s)) + #define SET_INUSE_AND_PINUSE(M,p,s)\ + ((p)->iHead = (s|PINUSE_BIT|CINUSE_BIT),\ + (((mchunkptr)(((TUint8*)(p)) + (s)))->iHead |= PINUSE_BIT),\ + MARK_INUSE_FOOT(M,p,s)) + #define SET_SIZE_AND_PINUSE_OF_INUSE_CHUNK(M, p, s)\ + ((p)->iHead = (s|PINUSE_BIT|CINUSE_BIT),\ + MARK_INUSE_FOOT(M, p, s)) +#endif /* !FOOTERS */ + + +#if ONLY_MSPACES +#define INTERNAL_MALLOC(m, b) mspace_malloc(m, b) +#define INTERNAL_FREE(m, mem) mspace_free(m,mem); +#else /* ONLY_MSPACES */ + #if MSPACES + #define INTERNAL_MALLOC(m, b) (m == GM)? dlmalloc(b) : mspace_malloc(m, b) + #define INTERNAL_FREE(m, mem) if (m == GM) dlfree(mem); else mspace_free(m,mem); + #else /* MSPACES */ + #define INTERNAL_MALLOC(m, b) dlmalloc(b) + #define INTERNAL_FREE(m, mem) dlfree(mem) + #endif /* MSPACES */ +#endif /* ONLY_MSPACES */ + + #ifndef NDEBUG + #define CHECKING 1 + #endif +// #define HYSTERESIS 4 + #define HYSTERESIS 1 + #define HYSTERESIS_BYTES (2*PAGESIZE) + #define HYSTERESIS_GROW (HYSTERESIS*PAGESIZE) + + #if CHECKING + #define CHECK(x) x + #else + #undef ASSERT + #define ASSERT(x) (void)0 + #define CHECK(x) (void)0 + #endif + +#endif/*__DLA__*/ |