226c446979
These compute size classes and indices similarly to size2index(), index2size() and s2u(), respectively, but using the subset of size classes that are multiples of the page size. Note that pszind_t and szind_t are not interchangeable.
1196 lines
31 KiB
C
1196 lines
31 KiB
C
#ifndef JEMALLOC_INTERNAL_H
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#define JEMALLOC_INTERNAL_H
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#include "jemalloc_internal_defs.h"
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#include "jemalloc/internal/jemalloc_internal_decls.h"
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#ifdef JEMALLOC_UTRACE
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#include <sys/ktrace.h>
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#endif
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#define JEMALLOC_NO_DEMANGLE
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#ifdef JEMALLOC_JET
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# define JEMALLOC_N(n) jet_##n
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# include "jemalloc/internal/public_namespace.h"
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# define JEMALLOC_NO_RENAME
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# include "../jemalloc@install_suffix@.h"
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# undef JEMALLOC_NO_RENAME
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#else
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# define JEMALLOC_N(n) @private_namespace@##n
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# include "../jemalloc@install_suffix@.h"
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#endif
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#include "jemalloc/internal/private_namespace.h"
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static const bool config_debug =
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#ifdef JEMALLOC_DEBUG
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true
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#else
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false
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#endif
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;
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static const bool have_dss =
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#ifdef JEMALLOC_DSS
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true
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#else
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false
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#endif
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;
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static const bool config_fill =
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#ifdef JEMALLOC_FILL
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true
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#else
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false
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#endif
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;
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static const bool config_lazy_lock =
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#ifdef JEMALLOC_LAZY_LOCK
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true
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#else
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false
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#endif
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;
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static const char * const config_malloc_conf = JEMALLOC_CONFIG_MALLOC_CONF;
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static const bool config_prof =
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#ifdef JEMALLOC_PROF
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true
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#else
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false
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#endif
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;
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static const bool config_prof_libgcc =
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#ifdef JEMALLOC_PROF_LIBGCC
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true
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#else
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false
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#endif
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;
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static const bool config_prof_libunwind =
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#ifdef JEMALLOC_PROF_LIBUNWIND
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true
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#else
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false
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#endif
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;
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static const bool maps_coalesce =
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#ifdef JEMALLOC_MAPS_COALESCE
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true
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#else
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false
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#endif
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;
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static const bool config_munmap =
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#ifdef JEMALLOC_MUNMAP
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true
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#else
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false
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#endif
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;
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static const bool config_stats =
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#ifdef JEMALLOC_STATS
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true
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#else
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false
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#endif
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;
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static const bool config_tcache =
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#ifdef JEMALLOC_TCACHE
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true
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#else
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false
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#endif
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;
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static const bool config_tls =
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#ifdef JEMALLOC_TLS
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true
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#else
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false
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#endif
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;
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static const bool config_utrace =
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#ifdef JEMALLOC_UTRACE
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true
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#else
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false
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#endif
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;
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static const bool config_xmalloc =
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#ifdef JEMALLOC_XMALLOC
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true
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#else
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false
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#endif
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;
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static const bool config_ivsalloc =
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#ifdef JEMALLOC_IVSALLOC
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true
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#else
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false
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#endif
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;
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static const bool config_cache_oblivious =
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#ifdef JEMALLOC_CACHE_OBLIVIOUS
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true
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#else
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false
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#endif
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;
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#ifdef JEMALLOC_C11ATOMICS
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#include <stdatomic.h>
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#endif
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#ifdef JEMALLOC_ATOMIC9
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#include <machine/atomic.h>
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#endif
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#if (defined(JEMALLOC_OSATOMIC) || defined(JEMALLOC_OSSPIN))
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#include <libkern/OSAtomic.h>
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#endif
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#ifdef JEMALLOC_ZONE
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#include <mach/mach_error.h>
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#include <mach/mach_init.h>
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#include <mach/vm_map.h>
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#include <malloc/malloc.h>
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#endif
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#include "jemalloc/internal/ph.h"
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#define RB_COMPACT
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#include "jemalloc/internal/rb.h"
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#include "jemalloc/internal/qr.h"
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#include "jemalloc/internal/ql.h"
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/*
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* jemalloc can conceptually be broken into components (arena, tcache, etc.),
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* but there are circular dependencies that cannot be broken without
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* substantial performance degradation. In order to reduce the effect on
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* visual code flow, read the header files in multiple passes, with one of the
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* following cpp variables defined during each pass:
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*
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* JEMALLOC_H_TYPES : Preprocessor-defined constants and psuedo-opaque data
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* types.
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* JEMALLOC_H_STRUCTS : Data structures.
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* JEMALLOC_H_EXTERNS : Extern data declarations and function prototypes.
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* JEMALLOC_H_INLINES : Inline functions.
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*/
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/******************************************************************************/
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#define JEMALLOC_H_TYPES
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#include "jemalloc/internal/jemalloc_internal_macros.h"
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/* Page size index type. */
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typedef unsigned pszind_t;
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/* Size class index type. */
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typedef unsigned szind_t;
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/*
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* Flags bits:
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*
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* a: arena
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* t: tcache
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* 0: unused
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* z: zero
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* n: alignment
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*
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* aaaaaaaa aaaatttt tttttttt 0znnnnnn
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*/
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#define MALLOCX_ARENA_MASK ((int)~0xfffff)
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#define MALLOCX_ARENA_MAX 0xffe
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#define MALLOCX_TCACHE_MASK ((int)~0xfff000ffU)
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#define MALLOCX_TCACHE_MAX 0xffd
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#define MALLOCX_LG_ALIGN_MASK ((int)0x3f)
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/* Use MALLOCX_ALIGN_GET() if alignment may not be specified in flags. */
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#define MALLOCX_ALIGN_GET_SPECIFIED(flags) \
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(ZU(1) << (flags & MALLOCX_LG_ALIGN_MASK))
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#define MALLOCX_ALIGN_GET(flags) \
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(MALLOCX_ALIGN_GET_SPECIFIED(flags) & (SIZE_T_MAX-1))
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#define MALLOCX_ZERO_GET(flags) \
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((bool)(flags & MALLOCX_ZERO))
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#define MALLOCX_TCACHE_GET(flags) \
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(((unsigned)((flags & MALLOCX_TCACHE_MASK) >> 8)) - 2)
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#define MALLOCX_ARENA_GET(flags) \
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(((unsigned)(((unsigned)flags) >> 20)) - 1)
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/* Smallest size class to support. */
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#define TINY_MIN (1U << LG_TINY_MIN)
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/*
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* Minimum allocation alignment is 2^LG_QUANTUM bytes (ignoring tiny size
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* classes).
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*/
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#ifndef LG_QUANTUM
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# if (defined(__i386__) || defined(_M_IX86))
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# define LG_QUANTUM 4
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# endif
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# ifdef __ia64__
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# define LG_QUANTUM 4
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# endif
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# ifdef __alpha__
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# define LG_QUANTUM 4
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# endif
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# if (defined(__sparc64__) || defined(__sparcv9))
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# define LG_QUANTUM 4
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# endif
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# if (defined(__amd64__) || defined(__x86_64__) || defined(_M_X64))
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# define LG_QUANTUM 4
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# endif
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# ifdef __arm__
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# define LG_QUANTUM 3
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# endif
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# ifdef __aarch64__
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# define LG_QUANTUM 4
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# endif
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# ifdef __hppa__
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# define LG_QUANTUM 4
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# endif
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# ifdef __mips__
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# define LG_QUANTUM 3
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# endif
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# ifdef __or1k__
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# define LG_QUANTUM 3
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# endif
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# ifdef __powerpc__
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# define LG_QUANTUM 4
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# endif
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# ifdef __riscv__
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# define LG_QUANTUM 4
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# endif
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# ifdef __s390__
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# define LG_QUANTUM 4
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# endif
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# ifdef __SH4__
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# define LG_QUANTUM 4
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# endif
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# ifdef __tile__
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# define LG_QUANTUM 4
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# endif
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# ifdef __le32__
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# define LG_QUANTUM 4
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# endif
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# ifndef LG_QUANTUM
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# error "Unknown minimum alignment for architecture; specify via "
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"--with-lg-quantum"
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# endif
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#endif
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#define QUANTUM ((size_t)(1U << LG_QUANTUM))
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#define QUANTUM_MASK (QUANTUM - 1)
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/* Return the smallest quantum multiple that is >= a. */
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#define QUANTUM_CEILING(a) \
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(((a) + QUANTUM_MASK) & ~QUANTUM_MASK)
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#define LONG ((size_t)(1U << LG_SIZEOF_LONG))
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#define LONG_MASK (LONG - 1)
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/* Return the smallest long multiple that is >= a. */
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#define LONG_CEILING(a) \
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(((a) + LONG_MASK) & ~LONG_MASK)
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#define SIZEOF_PTR (1U << LG_SIZEOF_PTR)
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#define PTR_MASK (SIZEOF_PTR - 1)
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/* Return the smallest (void *) multiple that is >= a. */
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#define PTR_CEILING(a) \
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(((a) + PTR_MASK) & ~PTR_MASK)
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/*
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* Maximum size of L1 cache line. This is used to avoid cache line aliasing.
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* In addition, this controls the spacing of cacheline-spaced size classes.
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*
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* CACHELINE cannot be based on LG_CACHELINE because __declspec(align()) can
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* only handle raw constants.
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*/
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#define LG_CACHELINE 6
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#define CACHELINE 64
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#define CACHELINE_MASK (CACHELINE - 1)
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/* Return the smallest cacheline multiple that is >= s. */
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#define CACHELINE_CEILING(s) \
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(((s) + CACHELINE_MASK) & ~CACHELINE_MASK)
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/* Page size. LG_PAGE is determined by the configure script. */
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#ifdef PAGE_MASK
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# undef PAGE_MASK
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#endif
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#define PAGE ((size_t)(1U << LG_PAGE))
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#define PAGE_MASK ((size_t)(PAGE - 1))
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/* Return the page base address for the page containing address a. */
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#define PAGE_ADDR2BASE(a) \
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((void *)((uintptr_t)(a) & ~PAGE_MASK))
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/* Return the smallest pagesize multiple that is >= s. */
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#define PAGE_CEILING(s) \
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(((s) + PAGE_MASK) & ~PAGE_MASK)
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/* Return the nearest aligned address at or below a. */
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#define ALIGNMENT_ADDR2BASE(a, alignment) \
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((void *)((uintptr_t)(a) & (-(alignment))))
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/* Return the offset between a and the nearest aligned address at or below a. */
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#define ALIGNMENT_ADDR2OFFSET(a, alignment) \
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((size_t)((uintptr_t)(a) & (alignment - 1)))
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/* Return the smallest alignment multiple that is >= s. */
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#define ALIGNMENT_CEILING(s, alignment) \
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(((s) + (alignment - 1)) & (-(alignment)))
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/* Declare a variable-length array. */
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#if __STDC_VERSION__ < 199901L
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# ifdef _MSC_VER
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# include <malloc.h>
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# define alloca _alloca
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# else
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# ifdef JEMALLOC_HAS_ALLOCA_H
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# include <alloca.h>
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# else
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# include <stdlib.h>
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# endif
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# endif
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# define VARIABLE_ARRAY(type, name, count) \
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type *name = alloca(sizeof(type) * (count))
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#else
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# define VARIABLE_ARRAY(type, name, count) type name[(count)]
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#endif
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#include "jemalloc/internal/nstime.h"
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#include "jemalloc/internal/util.h"
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#include "jemalloc/internal/atomic.h"
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#include "jemalloc/internal/prng.h"
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#include "jemalloc/internal/ticker.h"
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#include "jemalloc/internal/ckh.h"
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#include "jemalloc/internal/size_classes.h"
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#include "jemalloc/internal/smoothstep.h"
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#include "jemalloc/internal/stats.h"
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#include "jemalloc/internal/ctl.h"
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#include "jemalloc/internal/witness.h"
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#include "jemalloc/internal/mutex.h"
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#include "jemalloc/internal/tsd.h"
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#include "jemalloc/internal/mb.h"
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#include "jemalloc/internal/extent.h"
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#include "jemalloc/internal/arena.h"
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#include "jemalloc/internal/bitmap.h"
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#include "jemalloc/internal/base.h"
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#include "jemalloc/internal/rtree.h"
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#include "jemalloc/internal/pages.h"
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#include "jemalloc/internal/chunk.h"
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#include "jemalloc/internal/huge.h"
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#include "jemalloc/internal/tcache.h"
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#include "jemalloc/internal/hash.h"
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#include "jemalloc/internal/prof.h"
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#undef JEMALLOC_H_TYPES
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/******************************************************************************/
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#define JEMALLOC_H_STRUCTS
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#include "jemalloc/internal/nstime.h"
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#include "jemalloc/internal/util.h"
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#include "jemalloc/internal/atomic.h"
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#include "jemalloc/internal/prng.h"
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#include "jemalloc/internal/ticker.h"
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#include "jemalloc/internal/ckh.h"
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#include "jemalloc/internal/size_classes.h"
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#include "jemalloc/internal/smoothstep.h"
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#include "jemalloc/internal/stats.h"
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#include "jemalloc/internal/ctl.h"
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#include "jemalloc/internal/witness.h"
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#include "jemalloc/internal/mutex.h"
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#include "jemalloc/internal/mb.h"
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#include "jemalloc/internal/bitmap.h"
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#define JEMALLOC_ARENA_STRUCTS_A
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#include "jemalloc/internal/arena.h"
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#undef JEMALLOC_ARENA_STRUCTS_A
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#include "jemalloc/internal/extent.h"
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#define JEMALLOC_ARENA_STRUCTS_B
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#include "jemalloc/internal/arena.h"
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#undef JEMALLOC_ARENA_STRUCTS_B
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#include "jemalloc/internal/base.h"
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#include "jemalloc/internal/rtree.h"
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#include "jemalloc/internal/pages.h"
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#include "jemalloc/internal/chunk.h"
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#include "jemalloc/internal/huge.h"
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#include "jemalloc/internal/tcache.h"
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#include "jemalloc/internal/hash.h"
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#include "jemalloc/internal/prof.h"
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#include "jemalloc/internal/tsd.h"
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#undef JEMALLOC_H_STRUCTS
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/******************************************************************************/
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#define JEMALLOC_H_EXTERNS
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extern bool opt_abort;
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extern const char *opt_junk;
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extern bool opt_junk_alloc;
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extern bool opt_junk_free;
|
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extern bool opt_utrace;
|
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extern bool opt_xmalloc;
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extern bool opt_zero;
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extern unsigned opt_narenas;
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|
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/* Number of CPUs. */
|
|
extern unsigned ncpus;
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|
|
/* Number of arenas used for automatic multiplexing of threads and arenas. */
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|
extern unsigned narenas_auto;
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|
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/*
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|
* Arenas that are used to service external requests. Not all elements of the
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* arenas array are necessarily used; arenas are created lazily as needed.
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*/
|
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extern arena_t **arenas;
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|
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/*
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* index2size_tab encodes the same information as could be computed (at
|
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* unacceptable cost in some code paths) by index2size_compute().
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*/
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extern size_t const index2size_tab[NSIZES+1];
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|
/*
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|
* size2index_tab is a compact lookup table that rounds request sizes up to
|
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* size classes. In order to reduce cache footprint, the table is compressed,
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* and all accesses are via size2index().
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*/
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extern uint8_t const size2index_tab[];
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|
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void *a0malloc(size_t size);
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void a0dalloc(void *ptr);
|
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void *bootstrap_malloc(size_t size);
|
|
void *bootstrap_calloc(size_t num, size_t size);
|
|
void bootstrap_free(void *ptr);
|
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unsigned narenas_total_get(void);
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arena_t *arena_init(tsdn_t *tsdn, unsigned ind);
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arena_tdata_t *arena_tdata_get_hard(tsd_t *tsd, unsigned ind);
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|
arena_t *arena_choose_hard(tsd_t *tsd, bool internal);
|
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void arena_migrate(tsd_t *tsd, unsigned oldind, unsigned newind);
|
|
void thread_allocated_cleanup(tsd_t *tsd);
|
|
void thread_deallocated_cleanup(tsd_t *tsd);
|
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void iarena_cleanup(tsd_t *tsd);
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|
void arena_cleanup(tsd_t *tsd);
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void arenas_tdata_cleanup(tsd_t *tsd);
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void narenas_tdata_cleanup(tsd_t *tsd);
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void arenas_tdata_bypass_cleanup(tsd_t *tsd);
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void jemalloc_prefork(void);
|
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void jemalloc_postfork_parent(void);
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void jemalloc_postfork_child(void);
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#include "jemalloc/internal/nstime.h"
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#include "jemalloc/internal/util.h"
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#include "jemalloc/internal/atomic.h"
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#include "jemalloc/internal/prng.h"
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#include "jemalloc/internal/ticker.h"
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#include "jemalloc/internal/ckh.h"
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#include "jemalloc/internal/size_classes.h"
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#include "jemalloc/internal/smoothstep.h"
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#include "jemalloc/internal/stats.h"
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#include "jemalloc/internal/ctl.h"
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#include "jemalloc/internal/witness.h"
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#include "jemalloc/internal/mutex.h"
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#include "jemalloc/internal/mb.h"
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#include "jemalloc/internal/bitmap.h"
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#include "jemalloc/internal/extent.h"
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#include "jemalloc/internal/arena.h"
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#include "jemalloc/internal/base.h"
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#include "jemalloc/internal/rtree.h"
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#include "jemalloc/internal/pages.h"
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#include "jemalloc/internal/chunk.h"
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#include "jemalloc/internal/huge.h"
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#include "jemalloc/internal/tcache.h"
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#include "jemalloc/internal/hash.h"
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#include "jemalloc/internal/prof.h"
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#include "jemalloc/internal/tsd.h"
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#undef JEMALLOC_H_EXTERNS
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/******************************************************************************/
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#define JEMALLOC_H_INLINES
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#include "jemalloc/internal/nstime.h"
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#include "jemalloc/internal/util.h"
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#include "jemalloc/internal/atomic.h"
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#include "jemalloc/internal/prng.h"
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#include "jemalloc/internal/ticker.h"
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#include "jemalloc/internal/ckh.h"
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#include "jemalloc/internal/size_classes.h"
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#include "jemalloc/internal/smoothstep.h"
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#include "jemalloc/internal/stats.h"
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#include "jemalloc/internal/ctl.h"
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#include "jemalloc/internal/tsd.h"
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#include "jemalloc/internal/witness.h"
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#include "jemalloc/internal/mutex.h"
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#include "jemalloc/internal/mb.h"
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#include "jemalloc/internal/extent.h"
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#include "jemalloc/internal/base.h"
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#include "jemalloc/internal/rtree.h"
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#include "jemalloc/internal/pages.h"
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#include "jemalloc/internal/chunk.h"
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#include "jemalloc/internal/huge.h"
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#ifndef JEMALLOC_ENABLE_INLINE
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pszind_t psz2ind(size_t psz);
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size_t pind2sz(pszind_t pind);
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size_t psz2u(size_t psz);
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szind_t size2index_compute(size_t size);
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szind_t size2index_lookup(size_t size);
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szind_t size2index(size_t size);
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size_t index2size_compute(szind_t index);
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size_t index2size_lookup(szind_t index);
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size_t index2size(szind_t index);
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size_t s2u_compute(size_t size);
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size_t s2u_lookup(size_t size);
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size_t s2u(size_t size);
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size_t sa2u(size_t size, size_t alignment);
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arena_t *arena_choose_impl(tsd_t *tsd, arena_t *arena, bool internal);
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arena_t *arena_choose(tsd_t *tsd, arena_t *arena);
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arena_t *arena_ichoose(tsdn_t *tsdn, arena_t *arena);
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arena_tdata_t *arena_tdata_get(tsd_t *tsd, unsigned ind,
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bool refresh_if_missing);
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arena_t *arena_get(tsdn_t *tsdn, unsigned ind, bool init_if_missing);
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ticker_t *decay_ticker_get(tsd_t *tsd, unsigned ind);
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#endif
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#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_C_))
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JEMALLOC_INLINE pszind_t
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psz2ind(size_t psz)
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{
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if (unlikely(psz > HUGE_MAXCLASS))
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return (NPSIZES);
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{
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pszind_t x = lg_floor((psz<<1)-1);
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pszind_t shift = (x < LG_SIZE_CLASS_GROUP + LG_PAGE) ? 0 : x -
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(LG_SIZE_CLASS_GROUP + LG_PAGE);
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pszind_t grp = shift << LG_SIZE_CLASS_GROUP;
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pszind_t lg_delta = (x < LG_SIZE_CLASS_GROUP + LG_PAGE + 1) ?
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LG_PAGE : x - LG_SIZE_CLASS_GROUP - 1;
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size_t delta_inverse_mask = ZI(-1) << lg_delta;
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pszind_t mod = ((((psz-1) & delta_inverse_mask) >> lg_delta)) &
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((ZU(1) << LG_SIZE_CLASS_GROUP) - 1);
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pszind_t ind = grp + mod;
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return (ind);
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}
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}
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JEMALLOC_INLINE size_t
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pind2sz(pszind_t pind)
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{
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{
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size_t grp = pind >> LG_SIZE_CLASS_GROUP;
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size_t mod = pind & ((ZU(1) << LG_SIZE_CLASS_GROUP) - 1);
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size_t grp_size_mask = ~((!!grp)-1);
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size_t grp_size = ((ZU(1) << (LG_PAGE +
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(LG_SIZE_CLASS_GROUP-1))) << grp) & grp_size_mask;
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size_t shift = (grp == 0) ? 1 : grp;
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size_t lg_delta = shift + (LG_PAGE-1);
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size_t mod_size = (mod+1) << lg_delta;
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size_t sz = grp_size + mod_size;
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return (sz);
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}
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}
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JEMALLOC_INLINE size_t
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psz2u(size_t psz)
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{
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if (unlikely(psz > HUGE_MAXCLASS))
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return (0);
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{
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size_t x = lg_floor((psz<<1)-1);
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size_t lg_delta = (x < LG_SIZE_CLASS_GROUP + LG_PAGE + 1) ?
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LG_PAGE : x - LG_SIZE_CLASS_GROUP - 1;
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size_t delta = ZU(1) << lg_delta;
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size_t delta_mask = delta - 1;
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size_t usize = (psz + delta_mask) & ~delta_mask;
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return (usize);
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}
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}
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JEMALLOC_INLINE szind_t
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size2index_compute(size_t size)
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{
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if (unlikely(size > HUGE_MAXCLASS))
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return (NSIZES);
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#if (NTBINS != 0)
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if (size <= (ZU(1) << LG_TINY_MAXCLASS)) {
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szind_t lg_tmin = LG_TINY_MAXCLASS - NTBINS + 1;
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szind_t lg_ceil = lg_floor(pow2_ceil_zu(size));
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return (lg_ceil < lg_tmin ? 0 : lg_ceil - lg_tmin);
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}
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#endif
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{
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szind_t x = lg_floor((size<<1)-1);
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szind_t shift = (x < LG_SIZE_CLASS_GROUP + LG_QUANTUM) ? 0 :
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x - (LG_SIZE_CLASS_GROUP + LG_QUANTUM);
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szind_t grp = shift << LG_SIZE_CLASS_GROUP;
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szind_t lg_delta = (x < LG_SIZE_CLASS_GROUP + LG_QUANTUM + 1)
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? LG_QUANTUM : x - LG_SIZE_CLASS_GROUP - 1;
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size_t delta_inverse_mask = ZI(-1) << lg_delta;
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szind_t mod = ((((size-1) & delta_inverse_mask) >> lg_delta)) &
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((ZU(1) << LG_SIZE_CLASS_GROUP) - 1);
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szind_t index = NTBINS + grp + mod;
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return (index);
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}
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}
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JEMALLOC_ALWAYS_INLINE szind_t
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size2index_lookup(size_t size)
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{
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assert(size <= LOOKUP_MAXCLASS);
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{
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szind_t ret = (size2index_tab[(size-1) >> LG_TINY_MIN]);
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assert(ret == size2index_compute(size));
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return (ret);
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}
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}
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JEMALLOC_ALWAYS_INLINE szind_t
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size2index(size_t size)
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{
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assert(size > 0);
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if (likely(size <= LOOKUP_MAXCLASS))
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return (size2index_lookup(size));
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return (size2index_compute(size));
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}
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JEMALLOC_INLINE size_t
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index2size_compute(szind_t index)
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{
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#if (NTBINS > 0)
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if (index < NTBINS)
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return (ZU(1) << (LG_TINY_MAXCLASS - NTBINS + 1 + index));
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#endif
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{
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size_t reduced_index = index - NTBINS;
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size_t grp = reduced_index >> LG_SIZE_CLASS_GROUP;
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size_t mod = reduced_index & ((ZU(1) << LG_SIZE_CLASS_GROUP) -
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1);
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size_t grp_size_mask = ~((!!grp)-1);
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size_t grp_size = ((ZU(1) << (LG_QUANTUM +
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(LG_SIZE_CLASS_GROUP-1))) << grp) & grp_size_mask;
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size_t shift = (grp == 0) ? 1 : grp;
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size_t lg_delta = shift + (LG_QUANTUM-1);
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size_t mod_size = (mod+1) << lg_delta;
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size_t usize = grp_size + mod_size;
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return (usize);
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}
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}
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JEMALLOC_ALWAYS_INLINE size_t
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index2size_lookup(szind_t index)
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{
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size_t ret = (size_t)index2size_tab[index];
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assert(ret == index2size_compute(index));
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return (ret);
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}
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JEMALLOC_ALWAYS_INLINE size_t
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index2size(szind_t index)
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{
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assert(index < NSIZES);
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return (index2size_lookup(index));
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}
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JEMALLOC_ALWAYS_INLINE size_t
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s2u_compute(size_t size)
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{
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if (unlikely(size > HUGE_MAXCLASS))
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return (0);
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#if (NTBINS > 0)
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if (size <= (ZU(1) << LG_TINY_MAXCLASS)) {
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size_t lg_tmin = LG_TINY_MAXCLASS - NTBINS + 1;
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size_t lg_ceil = lg_floor(pow2_ceil_zu(size));
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return (lg_ceil < lg_tmin ? (ZU(1) << lg_tmin) :
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(ZU(1) << lg_ceil));
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}
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#endif
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{
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size_t x = lg_floor((size<<1)-1);
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size_t lg_delta = (x < LG_SIZE_CLASS_GROUP + LG_QUANTUM + 1)
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? LG_QUANTUM : x - LG_SIZE_CLASS_GROUP - 1;
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size_t delta = ZU(1) << lg_delta;
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size_t delta_mask = delta - 1;
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size_t usize = (size + delta_mask) & ~delta_mask;
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return (usize);
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}
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}
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JEMALLOC_ALWAYS_INLINE size_t
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s2u_lookup(size_t size)
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{
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size_t ret = index2size_lookup(size2index_lookup(size));
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assert(ret == s2u_compute(size));
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return (ret);
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}
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/*
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* Compute usable size that would result from allocating an object with the
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* specified size.
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*/
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JEMALLOC_ALWAYS_INLINE size_t
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s2u(size_t size)
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{
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assert(size > 0);
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if (likely(size <= LOOKUP_MAXCLASS))
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return (s2u_lookup(size));
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return (s2u_compute(size));
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}
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/*
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* Compute usable size that would result from allocating an object with the
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* specified size and alignment.
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*/
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JEMALLOC_ALWAYS_INLINE size_t
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sa2u(size_t size, size_t alignment)
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{
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size_t usize;
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assert(alignment != 0 && ((alignment - 1) & alignment) == 0);
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/* Try for a small size class. */
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if (size <= SMALL_MAXCLASS && alignment < PAGE) {
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/*
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* Round size up to the nearest multiple of alignment.
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*
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* This done, we can take advantage of the fact that for each
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* small size class, every object is aligned at the smallest
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* power of two that is non-zero in the base two representation
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* of the size. For example:
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*
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* Size | Base 2 | Minimum alignment
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* -----+----------+------------------
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* 96 | 1100000 | 32
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* 144 | 10100000 | 32
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* 192 | 11000000 | 64
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*/
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usize = s2u(ALIGNMENT_CEILING(size, alignment));
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if (usize < LARGE_MINCLASS)
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return (usize);
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}
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/* Try for a large size class. */
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if (likely(size <= large_maxclass) && likely(alignment < chunksize)) {
|
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/*
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* We can't achieve subpage alignment, so round up alignment
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* to the minimum that can actually be supported.
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*/
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alignment = PAGE_CEILING(alignment);
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/* Make sure result is a large size class. */
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usize = (size <= LARGE_MINCLASS) ? LARGE_MINCLASS : s2u(size);
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/*
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* Calculate the size of the over-size run that arena_palloc()
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* would need to allocate in order to guarantee the alignment.
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*/
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if (usize + large_pad + alignment <= arena_maxrun)
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return (usize);
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}
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/* Huge size class. Beware of overflow. */
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if (unlikely(alignment > HUGE_MAXCLASS))
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return (0);
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/*
|
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* We can't achieve subchunk alignment, so round up alignment to the
|
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* minimum that can actually be supported.
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*/
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alignment = CHUNK_CEILING(alignment);
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/* Make sure result is a huge size class. */
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if (size <= chunksize)
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usize = chunksize;
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else {
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usize = s2u(size);
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if (usize < size) {
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/* size_t overflow. */
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return (0);
|
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}
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}
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|
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/*
|
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* Calculate the multi-chunk mapping that huge_palloc() would need in
|
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* order to guarantee the alignment.
|
|
*/
|
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if (usize + alignment < usize) {
|
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/* size_t overflow. */
|
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return (0);
|
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}
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return (usize);
|
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}
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|
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/* Choose an arena based on a per-thread value. */
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JEMALLOC_INLINE arena_t *
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arena_choose_impl(tsd_t *tsd, arena_t *arena, bool internal)
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{
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arena_t *ret;
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if (arena != NULL)
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return (arena);
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ret = internal ? tsd_iarena_get(tsd) : tsd_arena_get(tsd);
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if (unlikely(ret == NULL))
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ret = arena_choose_hard(tsd, internal);
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return (ret);
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}
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|
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JEMALLOC_INLINE arena_t *
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arena_choose(tsd_t *tsd, arena_t *arena)
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{
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return (arena_choose_impl(tsd, arena, false));
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}
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JEMALLOC_INLINE arena_t *
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arena_ichoose(tsdn_t *tsdn, arena_t *arena)
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{
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assert(!tsdn_null(tsdn) || arena != NULL);
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if (!tsdn_null(tsdn))
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return (arena_choose_impl(tsdn_tsd(tsdn), NULL, true));
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return (arena);
|
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}
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|
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JEMALLOC_INLINE arena_tdata_t *
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arena_tdata_get(tsd_t *tsd, unsigned ind, bool refresh_if_missing)
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{
|
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arena_tdata_t *tdata;
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arena_tdata_t *arenas_tdata = tsd_arenas_tdata_get(tsd);
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|
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if (unlikely(arenas_tdata == NULL)) {
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/* arenas_tdata hasn't been initialized yet. */
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return (arena_tdata_get_hard(tsd, ind));
|
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}
|
|
if (unlikely(ind >= tsd_narenas_tdata_get(tsd))) {
|
|
/*
|
|
* ind is invalid, cache is old (too small), or tdata to be
|
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* initialized.
|
|
*/
|
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return (refresh_if_missing ? arena_tdata_get_hard(tsd, ind) :
|
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NULL);
|
|
}
|
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|
|
tdata = &arenas_tdata[ind];
|
|
if (likely(tdata != NULL) || !refresh_if_missing)
|
|
return (tdata);
|
|
return (arena_tdata_get_hard(tsd, ind));
|
|
}
|
|
|
|
JEMALLOC_INLINE arena_t *
|
|
arena_get(tsdn_t *tsdn, unsigned ind, bool init_if_missing)
|
|
{
|
|
arena_t *ret;
|
|
|
|
assert(ind <= MALLOCX_ARENA_MAX);
|
|
|
|
ret = arenas[ind];
|
|
if (unlikely(ret == NULL)) {
|
|
ret = atomic_read_p((void *)&arenas[ind]);
|
|
if (init_if_missing && unlikely(ret == NULL))
|
|
ret = arena_init(tsdn, ind);
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
JEMALLOC_INLINE ticker_t *
|
|
decay_ticker_get(tsd_t *tsd, unsigned ind)
|
|
{
|
|
arena_tdata_t *tdata;
|
|
|
|
tdata = arena_tdata_get(tsd, ind, true);
|
|
if (unlikely(tdata == NULL))
|
|
return (NULL);
|
|
return (&tdata->decay_ticker);
|
|
}
|
|
#endif
|
|
|
|
#include "jemalloc/internal/bitmap.h"
|
|
/*
|
|
* Include portions of arena.h interleaved with tcache.h in order to resolve
|
|
* circular dependencies.
|
|
*/
|
|
#define JEMALLOC_ARENA_INLINE_A
|
|
#include "jemalloc/internal/arena.h"
|
|
#undef JEMALLOC_ARENA_INLINE_A
|
|
#include "jemalloc/internal/tcache.h"
|
|
#define JEMALLOC_ARENA_INLINE_B
|
|
#include "jemalloc/internal/arena.h"
|
|
#undef JEMALLOC_ARENA_INLINE_B
|
|
#include "jemalloc/internal/hash.h"
|
|
|
|
#ifndef JEMALLOC_ENABLE_INLINE
|
|
arena_t *iaalloc(const void *ptr);
|
|
size_t isalloc(tsdn_t *tsdn, const void *ptr, bool demote);
|
|
void *iallocztm(tsdn_t *tsdn, size_t size, szind_t ind, bool zero,
|
|
tcache_t *tcache, bool is_metadata, arena_t *arena, bool slow_path);
|
|
void *ialloc(tsd_t *tsd, size_t size, szind_t ind, bool zero,
|
|
bool slow_path);
|
|
void *ipallocztm(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
|
|
tcache_t *tcache, bool is_metadata, arena_t *arena);
|
|
void *ipalloct(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
|
|
tcache_t *tcache, arena_t *arena);
|
|
void *ipalloc(tsd_t *tsd, size_t usize, size_t alignment, bool zero);
|
|
size_t ivsalloc(tsdn_t *tsdn, const void *ptr, bool demote);
|
|
void idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache, bool is_metadata,
|
|
bool slow_path);
|
|
void idalloc(tsd_t *tsd, void *ptr);
|
|
void isdalloct(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
|
|
bool slow_path);
|
|
void *iralloct_realign(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
|
|
size_t extra, size_t alignment, bool zero, tcache_t *tcache,
|
|
arena_t *arena);
|
|
void *iralloct(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
|
|
size_t alignment, bool zero, tcache_t *tcache, arena_t *arena);
|
|
void *iralloc(tsd_t *tsd, void *ptr, size_t oldsize, size_t size,
|
|
size_t alignment, bool zero);
|
|
bool ixalloc(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
|
|
size_t extra, size_t alignment, bool zero);
|
|
#endif
|
|
|
|
#if (defined(JEMALLOC_ENABLE_INLINE) || defined(JEMALLOC_C_))
|
|
JEMALLOC_ALWAYS_INLINE arena_t *
|
|
iaalloc(const void *ptr)
|
|
{
|
|
|
|
assert(ptr != NULL);
|
|
|
|
return (arena_aalloc(ptr));
|
|
}
|
|
|
|
/*
|
|
* Typical usage:
|
|
* tsdn_t *tsdn = [...]
|
|
* void *ptr = [...]
|
|
* size_t sz = isalloc(tsdn, ptr, config_prof);
|
|
*/
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
isalloc(tsdn_t *tsdn, const void *ptr, bool demote)
|
|
{
|
|
|
|
assert(ptr != NULL);
|
|
/* Demotion only makes sense if config_prof is true. */
|
|
assert(config_prof || !demote);
|
|
|
|
return (arena_salloc(tsdn, ptr, demote));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
iallocztm(tsdn_t *tsdn, size_t size, szind_t ind, bool zero, tcache_t *tcache,
|
|
bool is_metadata, arena_t *arena, bool slow_path)
|
|
{
|
|
void *ret;
|
|
|
|
assert(size != 0);
|
|
assert(!is_metadata || tcache == NULL);
|
|
assert(!is_metadata || arena == NULL || arena->ind < narenas_auto);
|
|
|
|
ret = arena_malloc(tsdn, arena, size, ind, zero, tcache, slow_path);
|
|
if (config_stats && is_metadata && likely(ret != NULL)) {
|
|
arena_metadata_allocated_add(iaalloc(ret),
|
|
isalloc(tsdn, ret, config_prof));
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
ialloc(tsd_t *tsd, size_t size, szind_t ind, bool zero, bool slow_path)
|
|
{
|
|
|
|
return (iallocztm(tsd_tsdn(tsd), size, ind, zero, tcache_get(tsd, true),
|
|
false, NULL, slow_path));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
ipallocztm(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
|
|
tcache_t *tcache, bool is_metadata, arena_t *arena)
|
|
{
|
|
void *ret;
|
|
|
|
assert(usize != 0);
|
|
assert(usize == sa2u(usize, alignment));
|
|
assert(!is_metadata || tcache == NULL);
|
|
assert(!is_metadata || arena == NULL || arena->ind < narenas_auto);
|
|
|
|
ret = arena_palloc(tsdn, arena, usize, alignment, zero, tcache);
|
|
assert(ALIGNMENT_ADDR2BASE(ret, alignment) == ret);
|
|
if (config_stats && is_metadata && likely(ret != NULL)) {
|
|
arena_metadata_allocated_add(iaalloc(ret), isalloc(tsdn, ret,
|
|
config_prof));
|
|
}
|
|
return (ret);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
ipalloct(tsdn_t *tsdn, size_t usize, size_t alignment, bool zero,
|
|
tcache_t *tcache, arena_t *arena)
|
|
{
|
|
|
|
return (ipallocztm(tsdn, usize, alignment, zero, tcache, false, arena));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
ipalloc(tsd_t *tsd, size_t usize, size_t alignment, bool zero)
|
|
{
|
|
|
|
return (ipallocztm(tsd_tsdn(tsd), usize, alignment, zero,
|
|
tcache_get(tsd, true), false, NULL));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE size_t
|
|
ivsalloc(tsdn_t *tsdn, const void *ptr, bool demote)
|
|
{
|
|
extent_node_t *node;
|
|
|
|
/* Return 0 if ptr is not within a chunk managed by jemalloc. */
|
|
node = chunk_lookup(ptr, false);
|
|
if (node == NULL)
|
|
return (0);
|
|
/* Only arena chunks should be looked up via interior pointers. */
|
|
assert(extent_node_addr_get(node) == ptr ||
|
|
extent_node_achunk_get(node));
|
|
|
|
return (isalloc(tsdn, ptr, demote));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
idalloctm(tsdn_t *tsdn, void *ptr, tcache_t *tcache, bool is_metadata,
|
|
bool slow_path)
|
|
{
|
|
|
|
assert(ptr != NULL);
|
|
assert(!is_metadata || tcache == NULL);
|
|
assert(!is_metadata || iaalloc(ptr)->ind < narenas_auto);
|
|
if (config_stats && is_metadata) {
|
|
arena_metadata_allocated_sub(iaalloc(ptr), isalloc(tsdn, ptr,
|
|
config_prof));
|
|
}
|
|
|
|
arena_dalloc(tsdn, ptr, tcache, slow_path);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
idalloc(tsd_t *tsd, void *ptr)
|
|
{
|
|
|
|
idalloctm(tsd_tsdn(tsd), ptr, tcache_get(tsd, false), false, true);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void
|
|
isdalloct(tsdn_t *tsdn, void *ptr, size_t size, tcache_t *tcache,
|
|
bool slow_path)
|
|
{
|
|
|
|
arena_sdalloc(tsdn, ptr, size, tcache, slow_path);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
iralloct_realign(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size,
|
|
size_t extra, size_t alignment, bool zero, tcache_t *tcache, arena_t *arena)
|
|
{
|
|
void *p;
|
|
size_t usize, copysize;
|
|
|
|
usize = sa2u(size + extra, alignment);
|
|
if (unlikely(usize == 0 || usize > HUGE_MAXCLASS))
|
|
return (NULL);
|
|
p = ipalloct(tsdn, usize, alignment, zero, tcache, arena);
|
|
if (p == NULL) {
|
|
if (extra == 0)
|
|
return (NULL);
|
|
/* Try again, without extra this time. */
|
|
usize = sa2u(size, alignment);
|
|
if (unlikely(usize == 0 || usize > HUGE_MAXCLASS))
|
|
return (NULL);
|
|
p = ipalloct(tsdn, usize, alignment, zero, tcache, arena);
|
|
if (p == NULL)
|
|
return (NULL);
|
|
}
|
|
/*
|
|
* Copy at most size bytes (not size+extra), since the caller has no
|
|
* expectation that the extra bytes will be reliably preserved.
|
|
*/
|
|
copysize = (size < oldsize) ? size : oldsize;
|
|
memcpy(p, ptr, copysize);
|
|
isdalloct(tsdn, ptr, oldsize, tcache, true);
|
|
return (p);
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
iralloct(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size, size_t alignment,
|
|
bool zero, tcache_t *tcache, arena_t *arena)
|
|
{
|
|
|
|
assert(ptr != NULL);
|
|
assert(size != 0);
|
|
|
|
if (alignment != 0 && ((uintptr_t)ptr & ((uintptr_t)alignment-1))
|
|
!= 0) {
|
|
/*
|
|
* Existing object alignment is inadequate; allocate new space
|
|
* and copy.
|
|
*/
|
|
return (iralloct_realign(tsdn, ptr, oldsize, size, 0, alignment,
|
|
zero, tcache, arena));
|
|
}
|
|
|
|
return (arena_ralloc(tsdn, arena, ptr, oldsize, size, alignment, zero,
|
|
tcache));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE void *
|
|
iralloc(tsd_t *tsd, void *ptr, size_t oldsize, size_t size, size_t alignment,
|
|
bool zero)
|
|
{
|
|
|
|
return (iralloct(tsd_tsdn(tsd), ptr, oldsize, size, alignment, zero,
|
|
tcache_get(tsd, true), NULL));
|
|
}
|
|
|
|
JEMALLOC_ALWAYS_INLINE bool
|
|
ixalloc(tsdn_t *tsdn, void *ptr, size_t oldsize, size_t size, size_t extra,
|
|
size_t alignment, bool zero)
|
|
{
|
|
|
|
assert(ptr != NULL);
|
|
assert(size != 0);
|
|
|
|
if (alignment != 0 && ((uintptr_t)ptr & ((uintptr_t)alignment-1))
|
|
!= 0) {
|
|
/* Existing object alignment is inadequate. */
|
|
return (true);
|
|
}
|
|
|
|
return (arena_ralloc_no_move(tsdn, ptr, oldsize, size, extra, zero));
|
|
}
|
|
#endif
|
|
|
|
#include "jemalloc/internal/prof.h"
|
|
|
|
#undef JEMALLOC_H_INLINES
|
|
/******************************************************************************/
|
|
#endif /* JEMALLOC_INTERNAL_H */
|