version 1.10, 2007/10/22 04:16:48 |
version 1.34.2.3, 2016/05/10 09:10:11 |
Line 161 __RCSID("$NetBSD$"); |
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Line 161 __RCSID("$NetBSD$"); |
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#ifdef __NetBSD__ |
#ifdef __NetBSD__ |
# include <reentrant.h> |
# include <reentrant.h> |
void _malloc_prefork(void); |
# include "extern.h" |
void _malloc_postfork(void); |
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ssize_t _write(int, const void *, size_t); |
#define STRERROR_R(a, b, c) __strerror_r(a, b, c); |
const char *_getprogname(void); |
/* |
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* A non localized version of strerror, that avoids bringing in |
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* stdio and the locale code. All the malloc messages are in English |
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* so why bother? |
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*/ |
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static int |
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__strerror_r(int e, char *s, size_t l) |
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{ |
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int rval; |
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size_t slen; |
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if (e >= 0 && e < sys_nerr) { |
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slen = strlcpy(s, sys_errlist[e], l); |
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rval = 0; |
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} else { |
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slen = snprintf_ss(s, l, "Unknown error %u", e); |
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rval = EINVAL; |
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} |
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return slen >= l ? ERANGE : rval; |
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} |
#endif |
#endif |
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#ifdef __FreeBSD__ |
#ifdef __FreeBSD__ |
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#define STRERROR_R(a, b, c) strerror_r(a, b, c); |
#include "un-namespace.h" |
#include "un-namespace.h" |
#endif |
#endif |
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Line 196 const char *_getprogname(void); |
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Line 216 const char *_getprogname(void); |
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#define STRERROR_BUF 64 |
#define STRERROR_BUF 64 |
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/* Minimum alignment of allocations is 2^QUANTUM_2POW_MIN bytes. */ |
/* Minimum alignment of allocations is 2^QUANTUM_2POW_MIN bytes. */ |
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/* |
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* If you touch the TINY_MIN_2POW definition for any architecture, please |
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* make sure to adjust the corresponding definition for JEMALLOC_TINY_MIN_2POW |
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* in the gcc 4.8 tree in dist/gcc/tree-ssa-ccp.c and verify that a native |
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* gcc is still buildable! |
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*/ |
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#ifdef __i386__ |
#ifdef __i386__ |
# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
# define SIZEOF_PTR_2POW 2 |
# define SIZEOF_PTR_2POW 2 |
Line 205 const char *_getprogname(void); |
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Line 233 const char *_getprogname(void); |
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# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
# define SIZEOF_PTR_2POW 3 |
# define SIZEOF_PTR_2POW 3 |
#endif |
#endif |
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#ifdef __aarch64__ |
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# define QUANTUM_2POW_MIN 4 |
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# define SIZEOF_PTR_2POW 3 |
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# define NO_TLS |
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#endif |
#ifdef __alpha__ |
#ifdef __alpha__ |
# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
# define SIZEOF_PTR_2POW 3 |
# define SIZEOF_PTR_2POW 3 |
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# define TINY_MIN_2POW 3 |
# define NO_TLS |
# define NO_TLS |
#endif |
#endif |
#ifdef __sparc64__ |
#ifdef __sparc64__ |
# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
# define SIZEOF_PTR_2POW 3 |
# define SIZEOF_PTR_2POW 3 |
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# define TINY_MIN_2POW 3 |
# define NO_TLS |
# define NO_TLS |
#endif |
#endif |
#ifdef __amd64__ |
#ifdef __amd64__ |
# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
# define SIZEOF_PTR_2POW 3 |
# define SIZEOF_PTR_2POW 3 |
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# define TINY_MIN_2POW 3 |
#endif |
#endif |
#ifdef __arm__ |
#ifdef __arm__ |
# define QUANTUM_2POW_MIN 3 |
# define QUANTUM_2POW_MIN 3 |
# define SIZEOF_PTR_2POW 2 |
# define SIZEOF_PTR_2POW 2 |
# define USE_BRK |
# define USE_BRK |
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# ifdef __ARM_EABI__ |
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# define TINY_MIN_2POW 3 |
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# endif |
# define NO_TLS |
# define NO_TLS |
#endif |
#endif |
#ifdef __powerpc__ |
#ifdef __powerpc__ |
# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
# define SIZEOF_PTR_2POW 2 |
# define SIZEOF_PTR_2POW 2 |
# define USE_BRK |
# define USE_BRK |
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# define TINY_MIN_2POW 3 |
#endif |
#endif |
#if defined(__sparc__) && !defined(__sparc64__) |
#if defined(__sparc__) && !defined(__sparc64__) |
# define QUANTUM_2POW_MIN 4 |
# define QUANTUM_2POW_MIN 4 |
Line 268 const char *_getprogname(void); |
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Line 308 const char *_getprogname(void); |
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# define SIZEOF_INT_2POW 2 |
# define SIZEOF_INT_2POW 2 |
#endif |
#endif |
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/* We can't use TLS in non-PIC programs, since TLS relies on loader magic. */ |
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#if (!defined(PIC) && !defined(NO_TLS)) |
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# define NO_TLS |
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#endif |
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/* |
/* |
* Size and alignment of memory chunks that are allocated by the OS's virtual |
* Size and alignment of memory chunks that are allocated by the OS's virtual |
* memory system. |
* memory system. |
Line 288 const char *_getprogname(void); |
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Line 323 const char *_getprogname(void); |
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#define CACHELINE ((size_t)(1 << CACHELINE_2POW)) |
#define CACHELINE ((size_t)(1 << CACHELINE_2POW)) |
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/* Smallest size class to support. */ |
/* Smallest size class to support. */ |
#define TINY_MIN_2POW 1 |
#ifndef TINY_MIN_2POW |
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#define TINY_MIN_2POW 2 |
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#endif |
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/* |
/* |
* Maximum size class that is a multiple of the quantum, but not (necessarily) |
* Maximum size class that is a multiple of the quantum, but not (necessarily) |
Line 299 const char *_getprogname(void); |
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Line 336 const char *_getprogname(void); |
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#define SMALL_MAX_DEFAULT (1 << SMALL_MAX_2POW_DEFAULT) |
#define SMALL_MAX_DEFAULT (1 << SMALL_MAX_2POW_DEFAULT) |
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/* |
/* |
* Maximum desired run header overhead. Runs are sized as small as possible |
* RUN_MAX_OVRHD indicates maximum desired run header overhead. Runs are sized |
* such that this setting is still honored, without violating other constraints. |
* as small as possible such that this setting is still honored, without |
* The goal is to make runs as small as possible without exceeding a per run |
* violating other constraints. The goal is to make runs as small as possible |
* external fragmentation threshold. |
* without exceeding a per run external fragmentation threshold. |
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* |
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* We use binary fixed point math for overhead computations, where the binary |
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* point is implicitly RUN_BFP bits to the left. |
* |
* |
* Note that it is possible to set this low enough that it cannot be honored |
* Note that it is possible to set RUN_MAX_OVRHD low enough that it cannot be |
* for some/all object sizes, since there is one bit of header overhead per |
* honored for some/all object sizes, since there is one bit of header overhead |
* object (plus a constant). In such cases, this constraint is relaxed. |
* per object (plus a constant). This constraint is relaxed (ignored) for runs |
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* that are so small that the per-region overhead is greater than: |
* |
* |
* RUN_MAX_OVRHD_RELAX specifies the maximum number of bits per region of |
* (RUN_MAX_OVRHD / (reg_size << (3+RUN_BFP)) |
* overhead for which RUN_MAX_OVRHD is relaxed. |
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*/ |
*/ |
#define RUN_MAX_OVRHD 0.015 |
#define RUN_BFP 12 |
#define RUN_MAX_OVRHD_RELAX 1.5 |
/* \/ Implicit binary fixed point. */ |
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#define RUN_MAX_OVRHD 0x0000003dU |
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#define RUN_MAX_OVRHD_RELAX 0x00001800U |
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/* Put a cap on small object run size. This overrides RUN_MAX_OVRHD. */ |
/* Put a cap on small object run size. This overrides RUN_MAX_OVRHD. */ |
#define RUN_MAX_SMALL_2POW 15 |
#define RUN_MAX_SMALL_2POW 15 |
Line 340 static malloc_mutex_t init_lock = {_SPIN |
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Line 382 static malloc_mutex_t init_lock = {_SPIN |
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/* Set to true once the allocator has been initialized. */ |
/* Set to true once the allocator has been initialized. */ |
static bool malloc_initialized = false; |
static bool malloc_initialized = false; |
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#ifdef _REENTRANT |
/* Used to avoid initialization races. */ |
/* Used to avoid initialization races. */ |
static mutex_t init_lock = MUTEX_INITIALIZER; |
static mutex_t init_lock = MUTEX_INITIALIZER; |
#endif |
#endif |
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#endif |
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/******************************************************************************/ |
/******************************************************************************/ |
/* |
/* |
Line 652 static size_t arena_maxclass; /* Max si |
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Line 696 static size_t arena_maxclass; /* Max si |
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* Chunks. |
* Chunks. |
*/ |
*/ |
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#ifdef _REENTRANT |
/* Protects chunk-related data structures. */ |
/* Protects chunk-related data structures. */ |
static malloc_mutex_t chunks_mtx; |
static malloc_mutex_t chunks_mtx; |
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#endif |
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/* Tree of chunks that are stand-alone huge allocations. */ |
/* Tree of chunks that are stand-alone huge allocations. */ |
static chunk_tree_t huge; |
static chunk_tree_t huge; |
Line 704 static void *base_pages; |
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Line 750 static void *base_pages; |
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static void *base_next_addr; |
static void *base_next_addr; |
static void *base_past_addr; /* Addr immediately past base_pages. */ |
static void *base_past_addr; /* Addr immediately past base_pages. */ |
static chunk_node_t *base_chunk_nodes; /* LIFO cache of chunk nodes. */ |
static chunk_node_t *base_chunk_nodes; /* LIFO cache of chunk nodes. */ |
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#ifdef _REENTRANT |
static malloc_mutex_t base_mtx; |
static malloc_mutex_t base_mtx; |
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#endif |
#ifdef MALLOC_STATS |
#ifdef MALLOC_STATS |
static size_t base_mapped; |
static size_t base_mapped; |
#endif |
#endif |
Line 721 static size_t base_mapped; |
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Line 769 static size_t base_mapped; |
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static arena_t **arenas; |
static arena_t **arenas; |
static unsigned narenas; |
static unsigned narenas; |
static unsigned next_arena; |
static unsigned next_arena; |
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#ifdef _REENTRANT |
static malloc_mutex_t arenas_mtx; /* Protects arenas initialization. */ |
static malloc_mutex_t arenas_mtx; /* Protects arenas initialization. */ |
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#endif |
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#ifndef NO_TLS |
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/* |
/* |
* Map of pthread_self() --> arenas[???], used for selecting an arena to use |
* Map of pthread_self() --> arenas[???], used for selecting an arena to use |
* for allocations. |
* for allocations. |
*/ |
*/ |
static __thread arena_t *arenas_map; |
#ifndef NO_TLS |
#define get_arenas_map() (arenas_map) |
static __thread arena_t **arenas_map; |
#define set_arenas_map(x) (arenas_map = x) |
#else |
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static arena_t **arenas_map; |
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#endif |
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#if !defined(NO_TLS) || !defined(_REENTRANT) |
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# define get_arenas_map() (arenas_map) |
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# define set_arenas_map(x) (arenas_map = x) |
#else |
#else |
static thread_key_t arenas_map_key; |
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#define get_arenas_map() thr_getspecific(arenas_map_key) |
static thread_key_t arenas_map_key = -1; |
#define set_arenas_map(x) thr_setspecific(arenas_map_key, x) |
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static inline arena_t ** |
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get_arenas_map(void) |
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{ |
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if (!__isthreaded) |
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return arenas_map; |
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if (arenas_map_key == -1) { |
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(void)thr_keycreate(&arenas_map_key, NULL); |
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if (arenas_map != NULL) { |
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thr_setspecific(arenas_map_key, arenas_map); |
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arenas_map = NULL; |
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} |
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} |
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return thr_getspecific(arenas_map_key); |
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} |
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static __inline void |
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set_arenas_map(arena_t **a) |
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{ |
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if (!__isthreaded) { |
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arenas_map = a; |
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return; |
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} |
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if (arenas_map_key == -1) { |
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(void)thr_keycreate(&arenas_map_key, NULL); |
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if (arenas_map != NULL) { |
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_DIAGASSERT(arenas_map == a); |
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arenas_map = NULL; |
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} |
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} |
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thr_setspecific(arenas_map_key, a); |
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} |
#endif |
#endif |
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#ifdef MALLOC_STATS |
#ifdef MALLOC_STATS |
Line 791 static void wrtmessage(const char *p1, c |
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Line 881 static void wrtmessage(const char *p1, c |
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#ifdef MALLOC_STATS |
#ifdef MALLOC_STATS |
static void malloc_printf(const char *format, ...); |
static void malloc_printf(const char *format, ...); |
#endif |
#endif |
static char *umax2s(uintmax_t x, char *s); |
static char *size_t2s(size_t x, char *s); |
static bool base_pages_alloc(size_t minsize); |
static bool base_pages_alloc(size_t minsize); |
static void *base_alloc(size_t size); |
static void *base_alloc(size_t size); |
static chunk_node_t *base_chunk_node_alloc(void); |
static chunk_node_t *base_chunk_node_alloc(void); |
Line 804 static void *pages_map_align(void *addr, |
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Line 894 static void *pages_map_align(void *addr, |
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static void pages_unmap(void *addr, size_t size); |
static void pages_unmap(void *addr, size_t size); |
static void *chunk_alloc(size_t size); |
static void *chunk_alloc(size_t size); |
static void chunk_dealloc(void *chunk, size_t size); |
static void chunk_dealloc(void *chunk, size_t size); |
static arena_t *choose_arena_hard(void); |
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static void arena_run_split(arena_t *arena, arena_run_t *run, size_t size); |
static void arena_run_split(arena_t *arena, arena_run_t *run, size_t size); |
static arena_chunk_t *arena_chunk_alloc(arena_t *arena); |
static arena_chunk_t *arena_chunk_alloc(arena_t *arena); |
static void arena_chunk_dealloc(arena_t *arena, arena_chunk_t *chunk); |
static void arena_chunk_dealloc(arena_t *arena, arena_chunk_t *chunk); |
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wrtmessage(const char *p1, const char *p2, const char *p3, const char *p4) |
wrtmessage(const char *p1, const char *p2, const char *p3, const char *p4) |
{ |
{ |
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_write(STDERR_FILENO, p1, strlen(p1)); |
write(STDERR_FILENO, p1, strlen(p1)); |
_write(STDERR_FILENO, p2, strlen(p2)); |
write(STDERR_FILENO, p2, strlen(p2)); |
_write(STDERR_FILENO, p3, strlen(p3)); |
write(STDERR_FILENO, p3, strlen(p3)); |
_write(STDERR_FILENO, p4, strlen(p4)); |
write(STDERR_FILENO, p4, strlen(p4)); |
} |
} |
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void (*_malloc_message)(const char *p1, const char *p2, const char *p3, |
void (*_malloc_message)(const char *p1, const char *p2, const char *p3, |
Line 954 malloc_printf(const char *format, ...) |
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Line 1043 malloc_printf(const char *format, ...) |
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/* |
/* |
* We don't want to depend on vsnprintf() for production builds, since that can |
* We don't want to depend on vsnprintf() for production builds, since that can |
* cause unnecessary bloat for static binaries. umax2s() provides minimal |
* cause unnecessary bloat for static binaries. size_t2s() provides minimal |
* integer printing functionality, so that malloc_printf() use can be limited to |
* integer printing functionality, so that malloc_printf() use can be limited to |
* MALLOC_STATS code. |
* MALLOC_STATS code. |
*/ |
*/ |
#define UMAX2S_BUFSIZE 21 |
#define UMAX2S_BUFSIZE 21 |
static char * |
static char * |
umax2s(uintmax_t x, char *s) |
size_t2s(size_t x, char *s) |
{ |
{ |
unsigned i; |
unsigned i; |
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/* Make sure UMAX2S_BUFSIZE is large enough. */ |
/* Make sure UMAX2S_BUFSIZE is large enough. */ |
/* LINTED */ |
/* LINTED */ |
assert(sizeof(uintmax_t) <= 8); |
assert(sizeof(size_t) <= 8); |
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i = UMAX2S_BUFSIZE - 1; |
i = UMAX2S_BUFSIZE - 1; |
s[i] = '\0'; |
s[i] = '\0'; |
Line 1010 base_pages_alloc(size_t minsize) |
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Line 1099 base_pages_alloc(size_t minsize) |
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*/ |
*/ |
incr = (intptr_t)chunksize |
incr = (intptr_t)chunksize |
- (intptr_t)CHUNK_ADDR2OFFSET(brk_cur); |
- (intptr_t)CHUNK_ADDR2OFFSET(brk_cur); |
if (incr < minsize) |
assert(incr >= 0); |
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if ((size_t)incr < minsize) |
incr += csize; |
incr += csize; |
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brk_prev = sbrk(incr); |
brk_prev = sbrk(incr); |
Line 1227 pages_map_align(void *addr, size_t size, |
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Line 1317 pages_map_align(void *addr, size_t size, |
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if (munmap(ret, size) == -1) { |
if (munmap(ret, size) == -1) { |
char buf[STRERROR_BUF]; |
char buf[STRERROR_BUF]; |
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strerror_r(errno, buf, sizeof(buf)); |
STRERROR_R(errno, buf, sizeof(buf)); |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in munmap(): ", buf, "\n"); |
": (malloc) Error in munmap(): ", buf, "\n"); |
if (opt_abort) |
if (opt_abort) |
abort(); |
abort(); |
Line 1255 pages_unmap(void *addr, size_t size) |
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Line 1345 pages_unmap(void *addr, size_t size) |
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if (munmap(addr, size) == -1) { |
if (munmap(addr, size) == -1) { |
char buf[STRERROR_BUF]; |
char buf[STRERROR_BUF]; |
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strerror_r(errno, buf, sizeof(buf)); |
STRERROR_R(errno, buf, sizeof(buf)); |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in munmap(): ", buf, "\n"); |
": (malloc) Error in munmap(): ", buf, "\n"); |
if (opt_abort) |
if (opt_abort) |
abort(); |
abort(); |
Line 1345 chunk_alloc(size_t size) |
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Line 1435 chunk_alloc(size_t size) |
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*/ |
*/ |
incr = (intptr_t)size |
incr = (intptr_t)size |
- (intptr_t)CHUNK_ADDR2OFFSET(brk_cur); |
- (intptr_t)CHUNK_ADDR2OFFSET(brk_cur); |
if (incr == size) { |
if (incr == (intptr_t)size) { |
ret = brk_cur; |
ret = brk_cur; |
} else { |
} else { |
ret = (void *)((intptr_t)brk_cur + incr); |
ret = (void *)((intptr_t)brk_cur + incr); |
Line 1503 chunk_dealloc(void *chunk, size_t size) |
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Line 1593 chunk_dealloc(void *chunk, size_t size) |
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*/ |
*/ |
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/* |
/* |
* Choose an arena based on a per-thread value (fast-path code, calls slow-path |
* Choose an arena based on a per-thread and (optimistically) per-CPU value. |
* code if necessary). |
* |
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* We maintain at least one block of arenas. Usually there are more. |
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* The blocks are $ncpu arenas in size. Whole blocks are 'hashed' |
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* amongst threads. To accomplish this, next_arena advances only in |
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* ncpu steps. |
*/ |
*/ |
static inline arena_t * |
static __noinline arena_t * |
choose_arena(void) |
choose_arena_hard(void) |
{ |
{ |
arena_t *ret; |
unsigned i, curcpu; |
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arena_t **map; |
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/* |
/* Initialize the current block of arenas and advance to next. */ |
* We can only use TLS if this is a PIC library, since for the static |
malloc_mutex_lock(&arenas_mtx); |
* library version, libc's malloc is used by TLS allocation, which |
assert(next_arena % ncpus == 0); |
* introduces a bootstrapping issue. |
assert(narenas % ncpus == 0); |
*/ |
map = &arenas[next_arena]; |
if (__isthreaded == false) { |
set_arenas_map(map); |
/* |
for (i = 0; i < ncpus; i++) { |
* Avoid the overhead of TLS for single-threaded operation. If the |
if (arenas[next_arena] == NULL) |
* app switches to threaded mode, the initial thread may end up |
arenas_extend(next_arena); |
* being assigned to some other arena, but this one-time switch |
next_arena = (next_arena + 1) % narenas; |
* shouldn't cause significant issues. |
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*/ |
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return (arenas[0]); |
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} |
} |
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malloc_mutex_unlock(&arenas_mtx); |
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ret = get_arenas_map(); |
/* |
if (ret == NULL) |
* If we were unable to allocate an arena above, then default to |
ret = choose_arena_hard(); |
* the first arena, which is always present. |
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*/ |
assert(ret != NULL); |
curcpu = thr_curcpu(); |
return (ret); |
if (map[curcpu] != NULL) |
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return map[curcpu]; |
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return arenas[0]; |
} |
} |
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/* |
static inline arena_t * |
* Choose an arena based on a per-thread value (slow-path code only, called |
choose_arena(void) |
* only by choose_arena()). |
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*/ |
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static arena_t * |
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choose_arena_hard(void) |
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{ |
{ |
arena_t *ret; |
unsigned curcpu; |
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arena_t **map; |
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assert(__isthreaded); |
map = get_arenas_map(); |
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curcpu = thr_curcpu(); |
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if (__predict_true(map != NULL && map[curcpu] != NULL)) |
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return map[curcpu]; |
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/* Assign one of the arenas to this thread, in a round-robin fashion. */ |
return choose_arena_hard(); |
malloc_mutex_lock(&arenas_mtx); |
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ret = arenas[next_arena]; |
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if (ret == NULL) |
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ret = arenas_extend(next_arena); |
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if (ret == NULL) { |
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/* |
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* Make sure that this function never returns NULL, so that |
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* choose_arena() doesn't have to check for a NULL return |
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* value. |
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*/ |
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ret = arenas[0]; |
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} |
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next_arena = (next_arena + 1) % narenas; |
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malloc_mutex_unlock(&arenas_mtx); |
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set_arenas_map(ret); |
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return (ret); |
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} |
} |
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#ifndef lint |
#ifndef lint |
Line 1573 arena_chunk_comp(arena_chunk_t *a, arena |
|
Line 1651 arena_chunk_comp(arena_chunk_t *a, arena |
|
assert(a != NULL); |
assert(a != NULL); |
assert(b != NULL); |
assert(b != NULL); |
|
|
|
if (a->max_frun_npages < b->max_frun_npages) |
|
return -1; |
|
if (a->max_frun_npages > b->max_frun_npages) |
|
return 1; |
|
|
if ((uintptr_t)a < (uintptr_t)b) |
if ((uintptr_t)a < (uintptr_t)b) |
return (-1); |
return (-1); |
else if (a == b) |
else if (a == b) |
Line 1824 arena_chunk_alloc(arena_t *arena) |
|
Line 1907 arena_chunk_alloc(arena_t *arena) |
|
|
|
chunk->arena = arena; |
chunk->arena = arena; |
|
|
/* LINTED */ |
|
RB_INSERT(arena_chunk_tree_s, &arena->chunks, chunk); |
|
|
|
/* |
/* |
* Claim that no pages are in use, since the header is merely |
* Claim that no pages are in use, since the header is merely |
* overhead. |
* overhead. |
Line 1846 arena_chunk_alloc(arena_t *arena) |
|
Line 1926 arena_chunk_alloc(arena_t *arena) |
|
chunk->map[chunk_npages - 1].npages = chunk_npages - |
chunk->map[chunk_npages - 1].npages = chunk_npages - |
arena_chunk_header_npages; |
arena_chunk_header_npages; |
chunk->map[chunk_npages - 1].pos = POS_FREE; |
chunk->map[chunk_npages - 1].pos = POS_FREE; |
|
|
|
RB_INSERT(arena_chunk_tree_s, &arena->chunks, chunk); |
} |
} |
|
|
return (chunk); |
return (chunk); |
Line 1882 arena_chunk_dealloc(arena_t *arena, aren |
|
Line 1964 arena_chunk_dealloc(arena_t *arena, aren |
|
static arena_run_t * |
static arena_run_t * |
arena_run_alloc(arena_t *arena, size_t size) |
arena_run_alloc(arena_t *arena, size_t size) |
{ |
{ |
arena_chunk_t *chunk; |
arena_chunk_t *chunk, *chunk_tmp; |
arena_run_t *run; |
arena_run_t *run; |
unsigned need_npages, limit_pages, compl_need_npages; |
unsigned need_npages; |
|
|
assert(size <= (chunksize - (arena_chunk_header_npages << |
assert(size <= (chunksize - (arena_chunk_header_npages << |
pagesize_2pow))); |
pagesize_2pow))); |
assert((size & pagesize_mask) == 0); |
assert((size & pagesize_mask) == 0); |
|
|
/* |
/* |
* Search through arena's chunks in address order for a free run that is |
* Search through the arena chunk tree for a large enough free run. |
* large enough. Look for the first fit. |
* Tree order ensures that any exact fit is picked immediately or |
|
* otherwise the lowest address of the next size. |
*/ |
*/ |
need_npages = (unsigned)(size >> pagesize_2pow); |
need_npages = (unsigned)(size >> pagesize_2pow); |
limit_pages = chunk_npages - arena_chunk_header_npages; |
|
compl_need_npages = limit_pages - need_npages; |
|
/* LINTED */ |
/* LINTED */ |
RB_FOREACH(chunk, arena_chunk_tree_s, &arena->chunks) { |
for (;;) { |
|
chunk_tmp = RB_ROOT(&arena->chunks); |
|
chunk = NULL; |
|
while (chunk_tmp) { |
|
if (chunk_tmp->max_frun_npages == need_npages) { |
|
chunk = chunk_tmp; |
|
break; |
|
} |
|
if (chunk_tmp->max_frun_npages < need_npages) { |
|
chunk_tmp = RB_RIGHT(chunk_tmp, link); |
|
continue; |
|
} |
|
chunk = chunk_tmp; |
|
chunk_tmp = RB_LEFT(chunk, link); |
|
} |
|
if (chunk == NULL) |
|
break; |
/* |
/* |
* Avoid searching this chunk if there are not enough |
* At this point, the chunk must have a cached run size large |
* contiguous free pages for there to possibly be a large |
* enough to fit the allocation. |
* enough free run. |
|
*/ |
*/ |
if (chunk->pages_used <= compl_need_npages && |
assert(need_npages <= chunk->max_frun_npages); |
need_npages <= chunk->max_frun_npages) { |
{ |
arena_chunk_map_t *mapelm; |
arena_chunk_map_t *mapelm; |
unsigned i; |
unsigned i; |
unsigned max_frun_npages = 0; |
unsigned max_frun_npages = 0; |
Line 1943 arena_run_alloc(arena_t *arena, size_t s |
|
Line 2039 arena_run_alloc(arena_t *arena, size_t s |
|
* chunk->min_frun_ind was already reset above (if |
* chunk->min_frun_ind was already reset above (if |
* necessary). |
* necessary). |
*/ |
*/ |
|
RB_REMOVE(arena_chunk_tree_s, &arena->chunks, chunk); |
chunk->max_frun_npages = max_frun_npages; |
chunk->max_frun_npages = max_frun_npages; |
|
RB_INSERT(arena_chunk_tree_s, &arena->chunks, chunk); |
} |
} |
} |
} |
|
|
Line 2026 arena_run_dalloc(arena_t *arena, arena_r |
|
Line 2124 arena_run_dalloc(arena_t *arena, arena_r |
|
assert(chunk->map[run_ind + run_pages - 1].pos == POS_FREE); |
assert(chunk->map[run_ind + run_pages - 1].pos == POS_FREE); |
} |
} |
|
|
if (chunk->map[run_ind].npages > chunk->max_frun_npages) |
if (chunk->map[run_ind].npages > chunk->max_frun_npages) { |
|
RB_REMOVE(arena_chunk_tree_s, &arena->chunks, chunk); |
chunk->max_frun_npages = chunk->map[run_ind].npages; |
chunk->max_frun_npages = chunk->map[run_ind].npages; |
|
RB_INSERT(arena_chunk_tree_s, &arena->chunks, chunk); |
|
} |
if (run_ind < chunk->min_frun_ind) |
if (run_ind < chunk->min_frun_ind) |
chunk->min_frun_ind = run_ind; |
chunk->min_frun_ind = run_ind; |
|
|
Line 2135 arena_bin_run_size_calc(arena_bin_t *bin |
|
Line 2236 arena_bin_run_size_calc(arena_bin_t *bin |
|
size_t try_run_size, good_run_size; |
size_t try_run_size, good_run_size; |
unsigned good_nregs, good_mask_nelms, good_reg0_offset; |
unsigned good_nregs, good_mask_nelms, good_reg0_offset; |
unsigned try_nregs, try_mask_nelms, try_reg0_offset; |
unsigned try_nregs, try_mask_nelms, try_reg0_offset; |
float max_ovrhd = RUN_MAX_OVRHD; |
|
|
|
assert(min_run_size >= pagesize); |
assert(min_run_size >= pagesize); |
assert(min_run_size <= arena_maxclass); |
assert(min_run_size <= arena_maxclass); |
Line 2153 arena_bin_run_size_calc(arena_bin_t *bin |
|
Line 2253 arena_bin_run_size_calc(arena_bin_t *bin |
|
*/ |
*/ |
try_run_size = min_run_size; |
try_run_size = min_run_size; |
try_nregs = (unsigned)(((try_run_size - sizeof(arena_run_t)) / |
try_nregs = (unsigned)(((try_run_size - sizeof(arena_run_t)) / |
bin->reg_size) + 1); /* Counter-act the first line of the loop. */ |
bin->reg_size) + 1); /* Counter-act try_nregs-- in loop. */ |
do { |
do { |
try_nregs--; |
try_nregs--; |
try_mask_nelms = (try_nregs >> (SIZEOF_INT_2POW + 3)) + |
try_mask_nelms = (try_nregs >> (SIZEOF_INT_2POW + 3)) + |
Line 2187 arena_bin_run_size_calc(arena_bin_t *bin |
|
Line 2287 arena_bin_run_size_calc(arena_bin_t *bin |
|
} while (sizeof(arena_run_t) + (sizeof(unsigned) * |
} while (sizeof(arena_run_t) + (sizeof(unsigned) * |
(try_mask_nelms - 1)) > try_reg0_offset); |
(try_mask_nelms - 1)) > try_reg0_offset); |
} while (try_run_size <= arena_maxclass && try_run_size <= RUN_MAX_SMALL |
} while (try_run_size <= arena_maxclass && try_run_size <= RUN_MAX_SMALL |
&& max_ovrhd > RUN_MAX_OVRHD_RELAX / ((float)(bin->reg_size << 3)) |
&& RUN_MAX_OVRHD * (bin->reg_size << 3) > RUN_MAX_OVRHD_RELAX |
&& ((float)(try_reg0_offset)) / ((float)(try_run_size)) > |
&& (try_reg0_offset << RUN_BFP) > RUN_MAX_OVRHD * try_run_size); |
max_ovrhd); |
|
|
|
assert(sizeof(arena_run_t) + (sizeof(unsigned) * (good_mask_nelms - 1)) |
assert(sizeof(arena_run_t) + (sizeof(unsigned) * (good_mask_nelms - 1)) |
<= good_reg0_offset); |
<= good_reg0_offset); |
Line 2670 arenas_extend(unsigned ind) |
|
Line 2769 arenas_extend(unsigned ind) |
|
* by using arenas[0]. In practice, this is an extremely unlikely |
* by using arenas[0]. In practice, this is an extremely unlikely |
* failure. |
* failure. |
*/ |
*/ |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error initializing arena\n", "", ""); |
": (malloc) Error initializing arena\n", "", ""); |
if (opt_abort) |
if (opt_abort) |
abort(); |
abort(); |
Line 2848 huge_ralloc(void *ptr, size_t size, size |
|
Line 2947 huge_ralloc(void *ptr, size_t size, size |
|
/* size_t wrap-around */ |
/* size_t wrap-around */ |
return (NULL); |
return (NULL); |
} |
} |
|
|
|
/* |
|
* Remove the old region from the tree now. If mremap() |
|
* returns the region to the system, other thread may |
|
* map it for same huge allocation and insert it to the |
|
* tree before we acquire the mutex lock again. |
|
*/ |
|
malloc_mutex_lock(&chunks_mtx); |
|
key.chunk = __DECONST(void *, ptr); |
|
/* LINTED */ |
|
node = RB_FIND(chunk_tree_s, &huge, &key); |
|
assert(node != NULL); |
|
assert(node->chunk == ptr); |
|
assert(node->size == oldcsize); |
|
RB_REMOVE(chunk_tree_s, &huge, node); |
|
malloc_mutex_unlock(&chunks_mtx); |
|
|
newptr = mremap(ptr, oldcsize, NULL, newcsize, |
newptr = mremap(ptr, oldcsize, NULL, newcsize, |
MAP_ALIGNED(chunksize_2pow)); |
MAP_ALIGNED(chunksize_2pow)); |
if (newptr != MAP_FAILED) { |
if (newptr == MAP_FAILED) { |
|
/* We still own the old region. */ |
|
malloc_mutex_lock(&chunks_mtx); |
|
RB_INSERT(chunk_tree_s, &huge, node); |
|
malloc_mutex_unlock(&chunks_mtx); |
|
} else { |
assert(CHUNK_ADDR2BASE(newptr) == newptr); |
assert(CHUNK_ADDR2BASE(newptr) == newptr); |
|
|
/* update tree */ |
/* Insert new or resized old region. */ |
malloc_mutex_lock(&chunks_mtx); |
malloc_mutex_lock(&chunks_mtx); |
key.chunk = __DECONST(void *, ptr); |
|
/* LINTED */ |
|
node = RB_FIND(chunk_tree_s, &huge, &key); |
|
assert(node != NULL); |
|
assert(node->chunk == ptr); |
|
assert(node->size == oldcsize); |
|
node->size = newcsize; |
node->size = newcsize; |
if (ptr != newptr) { |
node->chunk = newptr; |
RB_REMOVE(chunk_tree_s, &huge, node); |
RB_INSERT(chunk_tree_s, &huge, node); |
node->chunk = newptr; |
|
RB_INSERT(chunk_tree_s, &huge, node); |
|
} |
|
#ifdef MALLOC_STATS |
#ifdef MALLOC_STATS |
huge_nralloc++; |
huge_nralloc++; |
huge_allocated += newcsize - oldcsize; |
huge_allocated += newcsize - oldcsize; |
Line 3194 malloc_print_stats(void) |
|
Line 3306 malloc_print_stats(void) |
|
opt_xmalloc ? "X" : "x", |
opt_xmalloc ? "X" : "x", |
opt_zero ? "Z\n" : "z\n"); |
opt_zero ? "Z\n" : "z\n"); |
|
|
_malloc_message("CPUs: ", umax2s(ncpus, s), "\n", ""); |
_malloc_message("CPUs: ", size_t2s(ncpus, s), "\n", ""); |
_malloc_message("Max arenas: ", umax2s(narenas, s), "\n", ""); |
_malloc_message("Max arenas: ", size_t2s(narenas, s), "\n", ""); |
_malloc_message("Pointer size: ", umax2s(sizeof(void *), s), |
_malloc_message("Pointer size: ", size_t2s(sizeof(void *), s), |
"\n", ""); |
"\n", ""); |
_malloc_message("Quantum size: ", umax2s(quantum, s), "\n", ""); |
_malloc_message("Quantum size: ", size_t2s(quantum, s), "\n", ""); |
_malloc_message("Max small size: ", umax2s(small_max, s), "\n", |
_malloc_message("Max small size: ", size_t2s(small_max, s), "\n", |
""); |
""); |
|
|
_malloc_message("Chunk size: ", umax2s(chunksize, s), "", ""); |
_malloc_message("Chunk size: ", size_t2s(chunksize, s), "", ""); |
_malloc_message(" (2^", umax2s(opt_chunk_2pow, s), ")\n", ""); |
_malloc_message(" (2^", size_t2s((size_t)opt_chunk_2pow, s), |
|
")\n", ""); |
|
|
#ifdef MALLOC_STATS |
#ifdef MALLOC_STATS |
{ |
{ |
Line 3301 malloc_init_hard(void) |
|
Line 3414 malloc_init_hard(void) |
|
ssize_t linklen; |
ssize_t linklen; |
char buf[PATH_MAX + 1]; |
char buf[PATH_MAX + 1]; |
const char *opts = ""; |
const char *opts = ""; |
|
int serrno; |
|
|
malloc_mutex_lock(&init_lock); |
malloc_mutex_lock(&init_lock); |
if (malloc_initialized) { |
if (malloc_initialized) { |
Line 3312 malloc_init_hard(void) |
|
Line 3426 malloc_init_hard(void) |
|
return (false); |
return (false); |
} |
} |
|
|
|
serrno = errno; |
/* Get number of CPUs. */ |
/* Get number of CPUs. */ |
{ |
{ |
int mib[2]; |
int mib[2]; |
Line 3362 malloc_init_hard(void) |
|
Line 3477 malloc_init_hard(void) |
|
} |
} |
break; |
break; |
case 1: |
case 1: |
if (issetugid() == 0 && (opts = |
if ((opts = getenv("MALLOC_OPTIONS")) != NULL && |
getenv("MALLOC_OPTIONS")) != NULL) { |
issetugid() == 0) { |
/* |
/* |
* Do nothing; opts is already initialized to |
* Do nothing; opts is already initialized to |
* the value of the MALLOC_OPTIONS environment |
* the value of the MALLOC_OPTIONS environment |
Line 3423 malloc_init_hard(void) |
|
Line 3538 malloc_init_hard(void) |
|
opt_chunk_2pow--; |
opt_chunk_2pow--; |
break; |
break; |
case 'K': |
case 'K': |
/* |
if (opt_chunk_2pow + 1 < |
* There must be fewer pages in a chunk than |
(int)(sizeof(size_t) << 3)) |
* can be recorded by the pos field of |
|
* arena_chunk_map_t, in order to make POS_FREE |
|
* special. |
|
*/ |
|
if (opt_chunk_2pow - pagesize_2pow |
|
< (sizeof(uint32_t) << 3) - 1) |
|
opt_chunk_2pow++; |
opt_chunk_2pow++; |
break; |
break; |
case 'n': |
case 'n': |
Line 3490 malloc_init_hard(void) |
|
Line 3599 malloc_init_hard(void) |
|
|
|
cbuf[0] = opts[j]; |
cbuf[0] = opts[j]; |
cbuf[1] = '\0'; |
cbuf[1] = '\0'; |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Unsupported character in " |
": (malloc) Unsupported character in " |
"malloc options: '", cbuf, "'\n"); |
"malloc options: '", cbuf, "'\n"); |
} |
} |
} |
} |
} |
} |
} |
} |
|
errno = serrno; |
|
|
/* Take care to call atexit() only once. */ |
/* Take care to call atexit() only once. */ |
if (opt_print_stats) { |
if (opt_print_stats) { |
Line 3595 malloc_init_hard(void) |
|
Line 3705 malloc_init_hard(void) |
|
opt_narenas_lshift += 2; |
opt_narenas_lshift += 2; |
} |
} |
|
|
#ifdef NO_TLS |
|
/* Initialize arena key. */ |
|
(void)thr_keycreate(&arenas_map_key, NULL); |
|
#endif |
|
|
|
/* Determine how many arenas to use. */ |
/* Determine how many arenas to use. */ |
narenas = ncpus; |
narenas = ncpus; |
if (opt_narenas_lshift > 0) { |
if (opt_narenas_lshift > 0) { |
Line 3682 malloc(size_t size) |
|
Line 3787 malloc(size_t size) |
|
RETURN: |
RETURN: |
if (ret == NULL) { |
if (ret == NULL) { |
if (opt_xmalloc) { |
if (opt_xmalloc) { |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in malloc(): out of memory\n", "", |
": (malloc) Error in malloc(): out of memory\n", "", |
""); |
""); |
abort(); |
abort(); |
|
|
return (ret); |
return (ret); |
} |
} |
|
|
/* XXXAD */ |
|
int posix_memalign(void **memptr, size_t alignment, size_t size); |
|
|
|
int |
int |
posix_memalign(void **memptr, size_t alignment, size_t size) |
posix_memalign(void **memptr, size_t alignment, size_t size) |
{ |
{ |
Line 3710 posix_memalign(void **memptr, size_t ali |
|
Line 3812 posix_memalign(void **memptr, size_t ali |
|
if (((alignment - 1) & alignment) != 0 |
if (((alignment - 1) & alignment) != 0 |
|| alignment < sizeof(void *)) { |
|| alignment < sizeof(void *)) { |
if (opt_xmalloc) { |
if (opt_xmalloc) { |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in posix_memalign(): " |
": (malloc) Error in posix_memalign(): " |
"invalid alignment\n", "", ""); |
"invalid alignment\n", "", ""); |
abort(); |
abort(); |
Line 3725 posix_memalign(void **memptr, size_t ali |
|
Line 3827 posix_memalign(void **memptr, size_t ali |
|
|
|
if (result == NULL) { |
if (result == NULL) { |
if (opt_xmalloc) { |
if (opt_xmalloc) { |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in posix_memalign(): out of memory\n", |
": (malloc) Error in posix_memalign(): out of memory\n", |
"", ""); |
"", ""); |
abort(); |
abort(); |
Line 3780 calloc(size_t num, size_t size) |
|
Line 3882 calloc(size_t num, size_t size) |
|
RETURN: |
RETURN: |
if (ret == NULL) { |
if (ret == NULL) { |
if (opt_xmalloc) { |
if (opt_xmalloc) { |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in calloc(): out of memory\n", "", |
": (malloc) Error in calloc(): out of memory\n", "", |
""); |
""); |
abort(); |
abort(); |
Line 3815 realloc(void *ptr, size_t size) |
|
Line 3917 realloc(void *ptr, size_t size) |
|
|
|
if (ret == NULL) { |
if (ret == NULL) { |
if (opt_xmalloc) { |
if (opt_xmalloc) { |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in realloc(): out of " |
": (malloc) Error in realloc(): out of " |
"memory\n", "", ""); |
"memory\n", "", ""); |
abort(); |
abort(); |
Line 3830 realloc(void *ptr, size_t size) |
|
Line 3932 realloc(void *ptr, size_t size) |
|
|
|
if (ret == NULL) { |
if (ret == NULL) { |
if (opt_xmalloc) { |
if (opt_xmalloc) { |
_malloc_message(_getprogname(), |
_malloc_message(getprogname(), |
": (malloc) Error in realloc(): out of " |
": (malloc) Error in realloc(): out of " |
"memory\n", "", ""); |
"memory\n", "", ""); |
abort(); |
abort(); |
Line 3897 _malloc_prefork(void) |
|
Line 3999 _malloc_prefork(void) |
|
if (arenas[i] != NULL) |
if (arenas[i] != NULL) |
malloc_mutex_lock(&arenas[i]->mtx); |
malloc_mutex_lock(&arenas[i]->mtx); |
} |
} |
malloc_mutex_unlock(&arenas_mtx); |
|
|
|
malloc_mutex_lock(&base_mtx); |
malloc_mutex_lock(&base_mtx); |
|
|
Line 3915 _malloc_postfork(void) |
|
Line 4016 _malloc_postfork(void) |
|
|
|
malloc_mutex_unlock(&base_mtx); |
malloc_mutex_unlock(&base_mtx); |
|
|
malloc_mutex_lock(&arenas_mtx); |
|
for (i = 0; i < narenas; i++) { |
for (i = 0; i < narenas; i++) { |
if (arenas[i] != NULL) |
if (arenas[i] != NULL) |
malloc_mutex_unlock(&arenas[i]->mtx); |
malloc_mutex_unlock(&arenas[i]->mtx); |