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Simplify small size class infrastructure.

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Program-generate small size class tables for all valid combinations of
LG_TINY_MIN, LG_QUANTUM, and PAGE_SHIFT.  Use the appropriate table to generate
all relevant data structures, and remove the distinction between
tiny/quantum/cacheline/subpage bins.

Remove --enable-dynamic-page-shift.  This option didn't prove useful in
practice, and it prevented optimizations.

Add Tilera architecture support.
This commit is contained in:
Jason Evans 2012-02-28 16:50:47 -08:00
parent 5389146191
commit b172610317
17 changed files with 327 additions and 858 deletions
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1
.gitignore vendored
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@ -11,6 +11,7 @@
/lib/ /lib/
/Makefile /Makefile
/include/jemalloc/internal/jemalloc_internal\.h /include/jemalloc/internal/jemalloc_internal\.h
/include/jemalloc/internal/size_classes\.h
/include/jemalloc/jemalloc\.h /include/jemalloc/jemalloc\.h
/include/jemalloc/jemalloc_defs\.h /include/jemalloc/jemalloc_defs\.h
/test/jemalloc_test\.h /test/jemalloc_test\.h

8
INSTALL
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@ -113,14 +113,6 @@ any of the following arguments (not a definitive list) to 'configure':
rather than a minimal allocation. See the "opt.sysv" option documentation rather than a minimal allocation. See the "opt.sysv" option documentation
for usage details. for usage details.
--enable-dynamic-page-shift
Under most conditions, the system page size never changes (usually 4KiB or
8KiB, depending on architecture and configuration), and unless this option
is enabled, jemalloc assumes that page size can safely be determined during
configuration and hard-coded. Enabling dynamic page size determination has
a measurable impact on performance, since the compiler is forced to load
the page size from memory rather than embedding immediate values.
--enable-lazy-lock --enable-lazy-lock
Enable code that wraps pthread_create() to detect when an application Enable code that wraps pthread_create() to detect when an application
switches from single-threaded to multi-threaded mode, so that it can avoid switches from single-threaded to multi-threaded mode, so that it can avoid

24
configure.ac
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@ -367,8 +367,10 @@ cfgoutputs_tup="${cfgoutputs_tup} include/jemalloc/internal/jemalloc_internal.h"
cfgoutputs_tup="${cfgoutputs_tup} test/jemalloc_test.h:test/jemalloc_test.h.in" cfgoutputs_tup="${cfgoutputs_tup} test/jemalloc_test.h:test/jemalloc_test.h.in"
cfghdrs_in="${srcroot}include/jemalloc/jemalloc_defs.h.in" cfghdrs_in="${srcroot}include/jemalloc/jemalloc_defs.h.in"
cfghdrs_in="${cfghdrs_in} ${srcroot}include/jemalloc/internal/size_classes.sh"
cfghdrs_out="include/jemalloc/jemalloc_defs${install_suffix}.h" cfghdrs_out="include/jemalloc/jemalloc_defs${install_suffix}.h"
cfghdrs_out="${cfghdrs_out} include/jemalloc/internal/size_classes.h"
cfghdrs_tup="include/jemalloc/jemalloc_defs${install_suffix}.h:include/jemalloc/jemalloc_defs.h.in" cfghdrs_tup="include/jemalloc/jemalloc_defs${install_suffix}.h:include/jemalloc/jemalloc_defs.h.in"
@ -640,23 +642,6 @@ if test "x$enable_sysv" = "x1" ; then
fi fi
AC_SUBST([enable_sysv]) AC_SUBST([enable_sysv])
dnl Do not determine page shift at run time by default.
AC_ARG_ENABLE([dynamic_page_shift],
[AS_HELP_STRING([--enable-dynamic-page-shift],
[Determine page size at run time (don't trust configure result)])],
[if test "x$enable_dynamic_page_shift" = "xno" ; then
enable_dynamic_page_shift="0"
else
enable_dynamic_page_shift="1"
fi
],
[enable_dynamic_page_shift="0"]
)
if test "x$enable_dynamic_page_shift" = "x1" ; then
AC_DEFINE([DYNAMIC_PAGE_SHIFT], [ ])
fi
AC_SUBST([enable_dynamic_page_shift])
AC_MSG_CHECKING([STATIC_PAGE_SHIFT]) AC_MSG_CHECKING([STATIC_PAGE_SHIFT])
AC_RUN_IFELSE([AC_LANG_PROGRAM( AC_RUN_IFELSE([AC_LANG_PROGRAM(
[[#include <stdio.h> [[#include <stdio.h>
@ -866,6 +851,11 @@ dnl ============================================================================
dnl Check for typedefs, structures, and compiler characteristics. dnl Check for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL AC_HEADER_STDBOOL
AC_CONFIG_COMMANDS([include/jemalloc/internal/size_classes.h], [
mkdir -p "include/jemalloc/internal"
"${srcdir}/include/jemalloc/internal/size_classes.sh" > "${objroot}include/jemalloc/internal/size_classes.h"
])
dnl Process .in files. dnl Process .in files.
AC_SUBST([cfghdrs_in]) AC_SUBST([cfghdrs_in])
AC_SUBST([cfghdrs_out]) AC_SUBST([cfghdrs_out])

198
doc/jemalloc.xml.in
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@ -458,20 +458,11 @@ for (i = 0; i < nbins; i++) {
a frontier and free list to track which regions are in use. Allocation a frontier and free list to track which regions are in use. Allocation
requests that are no more than half the quantum (8 or 16, depending on requests that are no more than half the quantum (8 or 16, depending on
architecture) are rounded up to the nearest power of two that is at least architecture) are rounded up to the nearest power of two that is at least
<code language="C">sizeof(<type>void *</type>)</code>. Allocation requests <code language="C">sizeof(<type>double</type>)</code>. All other small
that are more than half the quantum, but no more than the minimum object size classes are multiples of the quantum, spaced such that internal
cacheline-multiple size class (see the <link fragmentation is limited to approximately 25% for all but the smallest size
linkend="opt.lg_qspace_max"><mallctl>opt.lg_qspace_max</mallctl></link> classes. Allocation requests that are larger than the maximum small size
option) are rounded up to the nearest multiple of the quantum. Allocation class, but small enough to fit in an arena-managed chunk (see the <link
requests that are more than the minimum cacheline-multiple size class, but
no more than the minimum subpage-multiple size class (see the <link
linkend="opt.lg_cspace_max"><mallctl>opt.lg_cspace_max</mallctl></link>
option) are rounded up to the nearest multiple of the cacheline size (64).
Allocation requests that are more than the minimum subpage-multiple size
class, but no more than the maximum subpage-multiple size class are rounded
up to the nearest multiple of the subpage size (256). Allocation requests
that are more than the maximum subpage-multiple size class, but small
enough to fit in an arena-managed chunk (see the <link
linkend="opt.lg_chunk"><mallctl>opt.lg_chunk</mallctl></link> option), are linkend="opt.lg_chunk"><mallctl>opt.lg_chunk</mallctl></link> option), are
rounded up to the nearest run size. Allocation requests that are too large rounded up to the nearest run size. Allocation requests that are too large
to fit in an arena-managed chunk are rounded up to the nearest multiple of to fit in an arena-managed chunk are rounded up to the nearest multiple of
@ -507,16 +498,28 @@ for (i = 0; i < nbins; i++) {
<entry>[8]</entry> <entry>[8]</entry>
</row> </row>
<row> <row>
<entry>Quantum-spaced</entry> <entry>16-spaced</entry>
<entry>[16, 32, 48, ..., 128]</entry> <entry>[16, 32, 48, ..., 128]</entry>
</row> </row>
<row> <row>
<entry>Cacheline-spaced</entry> <entry>32-spaced</entry>
<entry>[192, 256, 320, ..., 512]</entry> <entry>[160, 192, 224, 256]</entry>
</row> </row>
<row> <row>
<entry>Subpage-spaced</entry> <entry>64-spaced</entry>
<entry>[768, 1024, 1280, ..., 3840]</entry> <entry>[320, 384, 448, 512]</entry>
</row>
<row>
<entry>128-spaced</entry>
<entry>[640, 768, 896, 1024]</entry>
</row>
<row>
<entry>256-spaced</entry>
<entry>[1280, 1536, 1792, 2048]</entry>
</row>
<row>
<entry>512-spaced</entry>
<entry>[2560, 3072, 3584]</entry>
</row> </row>
<row> <row>
<entry namest="c1" nameend="c2">Large</entry> <entry namest="c1" nameend="c2">Large</entry>
@ -714,30 +717,6 @@ for (i = 0; i < nbins; i++) {
</para></listitem> </para></listitem>
</varlistentry> </varlistentry>
<varlistentry id="opt.lg_qspace_max">
<term>
<mallctl>opt.lg_qspace_max</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Size (log base 2) of the maximum size class that is a
multiple of the quantum (8 or 16 bytes, depending on architecture).
Above this size, cacheline spacing is used for size classes. The
default value is 128 bytes (2^7).</para></listitem>
</varlistentry>
<varlistentry id="opt.lg_cspace_max">
<term>
<mallctl>opt.lg_cspace_max</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Size (log base 2) of the maximum size class that is a
multiple of the cacheline size (64). Above this size, subpage spacing
(256 bytes) is used for size classes. The default value is 512 bytes
(2^9).</para></listitem>
</varlistentry>
<varlistentry id="opt.lg_chunk"> <varlistentry id="opt.lg_chunk">
<term> <term>
<mallctl>opt.lg_chunk</mallctl> <mallctl>opt.lg_chunk</mallctl>
@ -1178,24 +1157,6 @@ malloc_conf = "xmalloc:true";]]></programlisting>
<listitem><para>Quantum size.</para></listitem> <listitem><para>Quantum size.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term>
<mallctl>arenas.cacheline</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Assumed cacheline size.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.subpage</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Subpage size class interval.</para></listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term> <term>
<mallctl>arenas.pagesize</mallctl> <mallctl>arenas.pagesize</mallctl>
@ -1214,80 +1175,6 @@ malloc_conf = "xmalloc:true";]]></programlisting>
<listitem><para>Chunk size.</para></listitem> <listitem><para>Chunk size.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term>
<mallctl>arenas.tspace_min</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Minimum tiny size class. Tiny size classes are powers
of two.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.tspace_max</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Maximum tiny size class. Tiny size classes are powers
of two.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.qspace_min</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Minimum quantum-spaced size class.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.qspace_max</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Maximum quantum-spaced size class.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.cspace_min</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Minimum cacheline-spaced size class.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.cspace_max</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Maximum cacheline-spaced size class.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.sspace_min</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Minimum subpage-spaced size class.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.sspace_max</mallctl>
(<type>size_t</type>)
<literal>r-</literal>
</term>
<listitem><para>Maximum subpage-spaced size class.</para></listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term> <term>
<mallctl>arenas.tcache_max</mallctl> <mallctl>arenas.tcache_max</mallctl>
@ -1298,52 +1185,13 @@ malloc_conf = "xmalloc:true";]]></programlisting>
<listitem><para>Maximum thread-cached size class.</para></listitem> <listitem><para>Maximum thread-cached size class.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term>
<mallctl>arenas.ntbins</mallctl>
(<type>unsigned</type>)
<literal>r-</literal>
</term>
<listitem><para>Number of tiny bin size classes.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.nqbins</mallctl>
(<type>unsigned</type>)
<literal>r-</literal>
</term>
<listitem><para>Number of quantum-spaced bin size
classes.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.ncbins</mallctl>
(<type>unsigned</type>)
<literal>r-</literal>
</term>
<listitem><para>Number of cacheline-spaced bin size
classes.</para></listitem>
</varlistentry>
<varlistentry>
<term>
<mallctl>arenas.nsbins</mallctl>
(<type>unsigned</type>)
<literal>r-</literal>
</term>
<listitem><para>Number of subpage-spaced bin size
classes.</para></listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term> <term>
<mallctl>arenas.nbins</mallctl> <mallctl>arenas.nbins</mallctl>
(<type>unsigned</type>) (<type>unsigned</type>)
<literal>r-</literal> <literal>r-</literal>
</term> </term>
<listitem><para>Total number of bin size classes.</para></listitem> <listitem><para>Number of bin size classes.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry> <varlistentry>

98
include/jemalloc/internal/arena.h
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@ -1,39 +1,6 @@
/******************************************************************************/ /******************************************************************************/
#ifdef JEMALLOC_H_TYPES #ifdef JEMALLOC_H_TYPES
/*
* Subpages are an artificially designated partitioning of pages. Their only
* purpose is to support subpage-spaced size classes.
*
* There must be at least 4 subpages per page, due to the way size classes are
* handled.
*/
#define LG_SUBPAGE 8
#define SUBPAGE ((size_t)(1U << LG_SUBPAGE))
#define SUBPAGE_MASK (SUBPAGE - 1)
/* Return the smallest subpage multiple that is >= s. */
#define SUBPAGE_CEILING(s) \
(((s) + SUBPAGE_MASK) & ~SUBPAGE_MASK)
/* Smallest size class to support. */
#define LG_TINY_MIN 3
#define TINY_MIN (1U << LG_TINY_MIN)
/*
* Maximum size class that is a multiple of the quantum, but not (necessarily)
* a power of 2. Above this size, allocations are rounded up to the nearest
* power of 2.
*/
#define LG_QSPACE_MAX_DEFAULT 7
/*
* Maximum size class that is a multiple of the cacheline, but not (necessarily)
* a power of 2. Above this size, allocations are rounded up to the nearest
* power of 2.
*/
#define LG_CSPACE_MAX_DEFAULT 9
/* /*
* RUN_MAX_OVRHD indicates maximum desired run header overhead. Runs are sized * RUN_MAX_OVRHD indicates maximum desired run header overhead. Runs are sized
* as small as possible such that this setting is still honored, without * as small as possible such that this setting is still honored, without
@ -364,75 +331,26 @@ struct arena_s {
arena_avail_tree_t runs_avail_clean; arena_avail_tree_t runs_avail_clean;
arena_avail_tree_t runs_avail_dirty; arena_avail_tree_t runs_avail_dirty;
/* /* bins is used to store trees of free regions. */
* bins is used to store trees of free regions of the following sizes, arena_bin_t bins[NBINS];
* assuming a 64-bit system with 16-byte quantum, 4 KiB page size, and
* default MALLOC_CONF.
*
* bins[i] | size |
* --------+--------+
* 0 | 8 |
* --------+--------+
* 1 | 16 |
* 2 | 32 |
* 3 | 48 |
* : :
* 6 | 96 |
* 7 | 112 |
* 8 | 128 |
* --------+--------+
* 9 | 192 |
* 10 | 256 |
* 11 | 320 |
* 12 | 384 |
* 13 | 448 |
* 14 | 512 |
* --------+--------+
* 15 | 768 |
* 16 | 1024 |
* 17 | 1280 |
* : :
* 25 | 3328 |
* 26 | 3584 |
* 27 | 3840 |
* --------+--------+
*/
arena_bin_t bins[1]; /* Dynamically sized. */
}; };
#endif /* JEMALLOC_H_STRUCTS */ #endif /* JEMALLOC_H_STRUCTS */
/******************************************************************************/ /******************************************************************************/
#ifdef JEMALLOC_H_EXTERNS #ifdef JEMALLOC_H_EXTERNS
extern size_t opt_lg_qspace_max;
extern size_t opt_lg_cspace_max;
extern ssize_t opt_lg_dirty_mult; extern ssize_t opt_lg_dirty_mult;
/* /*
* small_size2bin is a compact lookup table that rounds request sizes up to * small_size2bin is a compact lookup table that rounds request sizes up to
* size classes. In order to reduce cache footprint, the table is compressed, * size classes. In order to reduce cache footprint, the table is compressed,
* and all accesses are via the SMALL_SIZE2BIN macro. * and all accesses are via the SMALL_SIZE2BIN macro.
*/ */
extern uint8_t const *small_size2bin; extern uint8_t const small_size2bin[];
#define SMALL_SIZE2BIN(s) (small_size2bin[(s-1) >> LG_TINY_MIN]) #define SMALL_SIZE2BIN(s) (small_size2bin[(s-1) >> LG_TINY_MIN])
extern arena_bin_info_t *arena_bin_info; extern arena_bin_info_t arena_bin_info[NBINS];
/* Various bin-related settings. */
/* Number of (2^n)-spaced tiny bins. */
#define ntbins ((unsigned)(LG_QUANTUM - LG_TINY_MIN))
extern unsigned nqbins; /* Number of quantum-spaced bins. */
extern unsigned ncbins; /* Number of cacheline-spaced bins. */
extern unsigned nsbins; /* Number of subpage-spaced bins. */
extern unsigned nbins;
#define tspace_max ((size_t)(QUANTUM >> 1))
#define qspace_min QUANTUM
extern size_t qspace_max;
extern size_t cspace_min;
extern size_t cspace_max;
extern size_t sspace_min;
extern size_t sspace_max;
#define small_maxclass sspace_max
/* Number of large size classes. */
#define nlclasses (chunk_npages - map_bias) #define nlclasses (chunk_npages - map_bias)
void arena_purge_all(arena_t *arena); void arena_purge_all(arena_t *arena);
@ -457,7 +375,7 @@ void *arena_ralloc_no_move(void *ptr, size_t oldsize, size_t size,
void *arena_ralloc(void *ptr, size_t oldsize, size_t size, size_t extra, void *arena_ralloc(void *ptr, size_t oldsize, size_t size, size_t extra,
size_t alignment, bool zero); size_t alignment, bool zero);
bool arena_new(arena_t *arena, unsigned ind); bool arena_new(arena_t *arena, unsigned ind);
bool arena_boot(void); void arena_boot(void);
#endif /* JEMALLOC_H_EXTERNS */ #endif /* JEMALLOC_H_EXTERNS */
/******************************************************************************/ /******************************************************************************/
@ -478,7 +396,7 @@ JEMALLOC_INLINE size_t
arena_bin_index(arena_t *arena, arena_bin_t *bin) arena_bin_index(arena_t *arena, arena_bin_t *bin)
{ {
size_t binind = bin - arena->bins; size_t binind = bin - arena->bins;
assert(binind < nbins); assert(binind < NBINS);
return (binind); return (binind);
} }
@ -633,7 +551,7 @@ arena_malloc(size_t size, bool zero)
assert(size != 0); assert(size != 0);
assert(QUANTUM_CEILING(size) <= arena_maxclass); assert(QUANTUM_CEILING(size) <= arena_maxclass);
if (size <= small_maxclass) { if (size <= SMALL_MAXCLASS) {
if ((tcache = tcache_get()) != NULL) if ((tcache = tcache_get()) != NULL)
return (tcache_alloc_small(tcache, size, zero)); return (tcache_alloc_small(tcache, size, zero));
else else

4
include/jemalloc/internal/atomic.h
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@ -70,7 +70,7 @@ atomic_sub_uint64(uint64_t *p, uint64_t x)
return (OSAtomicAdd64(-((int64_t)x), (int64_t *)p)); return (OSAtomicAdd64(-((int64_t)x), (int64_t *)p));
} }
#elif (defined(__amd64_) || defined(__x86_64__)) #elif (defined(__amd64__) || defined(__x86_64__))
JEMALLOC_INLINE uint64_t JEMALLOC_INLINE uint64_t
atomic_add_uint64(uint64_t *p, uint64_t x) atomic_add_uint64(uint64_t *p, uint64_t x)
{ {
@ -133,7 +133,7 @@ atomic_sub_uint32(uint32_t *p, uint32_t x)
return (OSAtomicAdd32(-((int32_t)x), (int32_t *)p)); return (OSAtomicAdd32(-((int32_t)x), (int32_t *)p));
} }
#elif (defined(__i386__) || defined(__amd64_) || defined(__x86_64__)) #elif (defined(__i386__) || defined(__amd64__) || defined(__x86_64__))
JEMALLOC_INLINE uint32_t JEMALLOC_INLINE uint32_t
atomic_add_uint32(uint32_t *p, uint32_t x) atomic_add_uint32(uint32_t *p, uint32_t x)
{ {

2
include/jemalloc/internal/ctl.h
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@ -40,7 +40,7 @@ struct ctl_arena_stats_s {
uint64_t ndalloc_small; uint64_t ndalloc_small;
uint64_t nrequests_small; uint64_t nrequests_small;
malloc_bin_stats_t *bstats; /* nbins elements. */ malloc_bin_stats_t bstats[NBINS];
malloc_large_stats_t *lstats; /* nlclasses elements. */ malloc_large_stats_t *lstats; /* nlclasses elements. */
}; };

80
include/jemalloc/internal/jemalloc_internal.h.in
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@ -229,33 +229,48 @@ extern void (*JEMALLOC_P(malloc_message))(void *wcbopaque, const char *s);
/* Size of stack-allocated buffer passed to buferror(). */ /* Size of stack-allocated buffer passed to buferror(). */
#define BUFERROR_BUF 64 #define BUFERROR_BUF 64
/* Minimum alignment of allocations is 2^LG_QUANTUM bytes. */ /* Smallest size class to support. */
#ifdef __i386__ #define LG_TINY_MIN 3
#define TINY_MIN (1U << LG_TINY_MIN)
/*
* Minimum alignment of allocations is 2^LG_QUANTUM bytes (ignoring tiny size
* classes).
*/
#ifndef LG_QUANTUM
# ifdef __i386__
# define LG_QUANTUM 4 # define LG_QUANTUM 4
#endif # endif
#ifdef __ia64__ # ifdef __ia64__
# define LG_QUANTUM 4 # define LG_QUANTUM 4
#endif # endif
#ifdef __alpha__ # ifdef __alpha__
# define LG_QUANTUM 4 # define LG_QUANTUM 4
#endif # endif
#ifdef __sparc64__ # ifdef __sparc64__
# define LG_QUANTUM 4 # define LG_QUANTUM 4
#endif # endif
#if (defined(__amd64__) || defined(__x86_64__)) # if (defined(__amd64__) || defined(__x86_64__))
# define LG_QUANTUM 4 # define LG_QUANTUM 4
#endif # endif
#ifdef __arm__ # ifdef __arm__
# define LG_QUANTUM 3 # define LG_QUANTUM 3
#endif # endif
#ifdef __mips__ # ifdef __mips__
# define LG_QUANTUM 3 # define LG_QUANTUM 3
#endif # endif
#ifdef __powerpc__ # ifdef __powerpc__
# define LG_QUANTUM 4 # define LG_QUANTUM 4
#endif # endif
#ifdef __s390x__ # ifdef __s390x__
# define LG_QUANTUM 4 # define LG_QUANTUM 4
# endif
# ifdef __tile__
# define LG_QUANTUM 4
# endif
# ifndef LG_QUANTUM
# error "No LG_QUANTUM definition for architecture; specify via CPPFLAGS"
# endif
#endif #endif
#define QUANTUM ((size_t)(1U << LG_QUANTUM)) #define QUANTUM ((size_t)(1U << LG_QUANTUM))
@ -291,15 +306,9 @@ extern void (*JEMALLOC_P(malloc_message))(void *wcbopaque, const char *s);
#define CACHELINE_CEILING(s) \ #define CACHELINE_CEILING(s) \
(((s) + CACHELINE_MASK) & ~CACHELINE_MASK) (((s) + CACHELINE_MASK) & ~CACHELINE_MASK)
/* /* Page size. STATIC_PAGE_SHIFT is determined by the configure script. */
* Page size. STATIC_PAGE_SHIFT is determined by the configure script. If
* DYNAMIC_PAGE_SHIFT is enabled, only use the STATIC_PAGE_* macros where
* compile-time values are required for the purposes of defining data
* structures.
*/
#define STATIC_PAGE_SIZE ((size_t)(1U << STATIC_PAGE_SHIFT)) #define STATIC_PAGE_SIZE ((size_t)(1U << STATIC_PAGE_SHIFT))
#define STATIC_PAGE_MASK ((size_t)(STATIC_PAGE_SIZE - 1)) #define STATIC_PAGE_MASK ((size_t)(STATIC_PAGE_SIZE - 1))
#ifdef PAGE_SHIFT #ifdef PAGE_SHIFT
# undef PAGE_SHIFT # undef PAGE_SHIFT
#endif #endif
@ -309,16 +318,9 @@ extern void (*JEMALLOC_P(malloc_message))(void *wcbopaque, const char *s);
#ifdef PAGE_MASK #ifdef PAGE_MASK
# undef PAGE_MASK # undef PAGE_MASK
#endif #endif
#define PAGE_SHIFT STATIC_PAGE_SHIFT
#ifdef DYNAMIC_PAGE_SHIFT #define PAGE_SIZE STATIC_PAGE_SIZE
# define PAGE_SHIFT lg_pagesize #define PAGE_MASK STATIC_PAGE_MASK
# define PAGE_SIZE pagesize
# define PAGE_MASK pagesize_mask
#else
# define PAGE_SHIFT STATIC_PAGE_SHIFT
# define PAGE_SIZE STATIC_PAGE_SIZE
# define PAGE_MASK STATIC_PAGE_MASK
#endif
/* Return the smallest pagesize multiple that is >= s. */ /* Return the smallest pagesize multiple that is >= s. */
#define PAGE_CEILING(s) \ #define PAGE_CEILING(s) \
@ -327,6 +329,7 @@ extern void (*JEMALLOC_P(malloc_message))(void *wcbopaque, const char *s);
#include "jemalloc/internal/atomic.h" #include "jemalloc/internal/atomic.h"
#include "jemalloc/internal/prn.h" #include "jemalloc/internal/prn.h"
#include "jemalloc/internal/ckh.h" #include "jemalloc/internal/ckh.h"
#include "jemalloc/internal/size_classes.h"
#include "jemalloc/internal/stats.h" #include "jemalloc/internal/stats.h"
#include "jemalloc/internal/ctl.h" #include "jemalloc/internal/ctl.h"
#include "jemalloc/internal/mutex.h" #include "jemalloc/internal/mutex.h"
@ -352,6 +355,7 @@ extern void (*JEMALLOC_P(malloc_message))(void *wcbopaque, const char *s);
#include "jemalloc/internal/atomic.h" #include "jemalloc/internal/atomic.h"
#include "jemalloc/internal/prn.h" #include "jemalloc/internal/prn.h"
#include "jemalloc/internal/ckh.h" #include "jemalloc/internal/ckh.h"
#include "jemalloc/internal/size_classes.h"
#include "jemalloc/internal/stats.h" #include "jemalloc/internal/stats.h"
#include "jemalloc/internal/ctl.h" #include "jemalloc/internal/ctl.h"
#include "jemalloc/internal/mutex.h" #include "jemalloc/internal/mutex.h"
@ -455,6 +459,7 @@ void jemalloc_postfork(void);
#include "jemalloc/internal/atomic.h" #include "jemalloc/internal/atomic.h"
#include "jemalloc/internal/prn.h" #include "jemalloc/internal/prn.h"
#include "jemalloc/internal/ckh.h" #include "jemalloc/internal/ckh.h"
#include "jemalloc/internal/size_classes.h"
#include "jemalloc/internal/stats.h" #include "jemalloc/internal/stats.h"
#include "jemalloc/internal/ctl.h" #include "jemalloc/internal/ctl.h"
#include "jemalloc/internal/mutex.h" #include "jemalloc/internal/mutex.h"
@ -480,6 +485,7 @@ void jemalloc_postfork(void);
#include "jemalloc/internal/atomic.h" #include "jemalloc/internal/atomic.h"
#include "jemalloc/internal/prn.h" #include "jemalloc/internal/prn.h"
#include "jemalloc/internal/ckh.h" #include "jemalloc/internal/ckh.h"
#include "jemalloc/internal/size_classes.h"
#include "jemalloc/internal/stats.h" #include "jemalloc/internal/stats.h"
#include "jemalloc/internal/ctl.h" #include "jemalloc/internal/ctl.h"
#include "jemalloc/internal/mutex.h" #include "jemalloc/internal/mutex.h"
@ -525,7 +531,7 @@ JEMALLOC_INLINE size_t
s2u(size_t size) s2u(size_t size)
{ {
if (size <= small_maxclass) if (size <= SMALL_MAXCLASS)
return (arena_bin_info[SMALL_SIZE2BIN(size)].reg_size); return (arena_bin_info[SMALL_SIZE2BIN(size)].reg_size);
if (size <= arena_maxclass) if (size <= arena_maxclass)
return (PAGE_CEILING(size)); return (PAGE_CEILING(size));
@ -570,7 +576,7 @@ sa2u(size_t size, size_t alignment, size_t *run_size_p)
} }
if (usize <= arena_maxclass && alignment <= PAGE_SIZE) { if (usize <= arena_maxclass && alignment <= PAGE_SIZE) {
if (usize <= small_maxclass) if (usize <= SMALL_MAXCLASS)
return (arena_bin_info[SMALL_SIZE2BIN(usize)].reg_size); return (arena_bin_info[SMALL_SIZE2BIN(usize)].reg_size);
return (PAGE_CEILING(usize)); return (PAGE_CEILING(usize));
} else { } else {

9
include/jemalloc/internal/mb.h
View File

@ -54,7 +54,7 @@ mb_write(void)
); );
#endif #endif
} }
#elif (defined(__amd64_) || defined(__x86_64__)) #elif (defined(__amd64__) || defined(__x86_64__))
JEMALLOC_INLINE void JEMALLOC_INLINE void
mb_write(void) mb_write(void)
{ {
@ -87,6 +87,13 @@ mb_write(void)
: "memory" /* Clobbers. */ : "memory" /* Clobbers. */
); );
} }
#elif defined(__tile__)
JEMALLOC_INLINE void
mb_write(void)
{
__sync_synchronize();
}
#else #else
/* /*
* This is much slower than a simple memory barrier, but the semantics of mutex * This is much slower than a simple memory barrier, but the semantics of mutex

132
include/jemalloc/internal/size_classes.sh Executable file
View File

@ -0,0 +1,132 @@
#!/bin/sh
# The following limits are chosen such that they cover all supported platforms.
# Range of quanta.
lg_qmin=3
lg_qmax=4
# The range of tiny size classes is [2^lg_tmin..2^(lg_q-1)].
lg_tmin=3
# Range of page sizes.
lg_pmin=12
lg_pmax=16
function pow2() {
e=$1
pow2_result=1
while [ ${e} -gt 0 ] ; do
pow2_result=`expr ${pow2_result} + ${pow2_result}`
e=`expr ${e} - 1`
done
}
cat <<EOF
/* This file was automatically generated by size_classes.sh. */
/******************************************************************************/
#ifdef JEMALLOC_H_TYPES
EOF
lg_q=${lg_qmin}
while [ ${lg_q} -le ${lg_qmax} ] ; do
lg_t=${lg_tmin}
while [ ${lg_t} -le ${lg_q} ] ; do
lg_p=${lg_pmin}
while [ ${lg_p} -le ${lg_pmax} ] ; do
cat <<EOF
#if (LG_TINY_MIN == ${lg_t} && LG_QUANTUM == ${lg_q} && PAGE_SHIFT == ${lg_p})
#define SIZE_CLASSES_DEFINED
EOF
pow2 ${lg_q}; q=${pow2_result}
pow2 ${lg_t}; t=${pow2_result}
pow2 ${lg_p}; p=${pow2_result}
bin=0
psz=0
sz=${t}
delta=`expr ${sz} - ${psz}`
cat <<EOF
/* SIZE_CLASS(bin, delta, sz) */
#define SIZE_CLASSES \\
EOF
# Tiny size classes.
while [ ${sz} -lt ${q} ] ; do
cat <<EOF
SIZE_CLASS(${bin}, ${delta}, ${sz}) \\
EOF
bin=`expr ${bin} + 1`
psz=${sz}
sz=`expr ${sz} + ${sz}`
delta=`expr ${sz} - ${psz}`
done
# Quantum-multiple size classes. For each doubling of sz, as many as 4
# size classes exist. Their spacing is the greater of:
# - q
# - sz/4, where sz is a power of 2
while [ ${sz} -lt ${p} ] ; do
if [ ${sz} -ge `expr ${q} \* 4` ] ; then
i=`expr ${sz} / 4`
else
i=${q}
fi
next_2pow=`expr ${sz} \* 2`
while [ ${sz} -lt $next_2pow ] ; do
cat <<EOF
SIZE_CLASS(${bin}, ${delta}, ${sz}) \\
EOF
bin=`expr ${bin} + 1`
psz=${sz}
sz=`expr ${sz} + ${i}`
delta=`expr ${sz} - ${psz}`
done
done
cat <<EOF
#define NBINS ${bin}
#define SMALL_MAXCLASS ${psz}
#endif
EOF
lg_p=`expr ${lg_p} + 1`
done
lg_t=`expr ${lg_t} + 1`
done
lg_q=`expr ${lg_q} + 1`
done
cat <<EOF
#ifndef SIZE_CLASSES_DEFINED
# error "No size class definitions match configuration"
#endif
#undef SIZE_CLASSES_DEFINED
/*
* The small_size2bin lookup table uses uint8_t to encode each bin index, so we
* cannot support more than 256 small size classes. Further constrain NBINS to
* 255 to support prof_promote, since all small size classes, plus a "not
* small" size class must be stored in 8 bits of arena_chunk_map_t's bits
* field.
*/
#if (NBINS > 255)
# error "Too many small size classes"
#endif
#endif /* JEMALLOC_H_TYPES */
/******************************************************************************/
#ifdef JEMALLOC_H_STRUCTS
#endif /* JEMALLOC_H_STRUCTS */
/******************************************************************************/
#ifdef JEMALLOC_H_EXTERNS
#endif /* JEMALLOC_H_EXTERNS */
/******************************************************************************/
#ifdef JEMALLOC_H_INLINES
#endif /* JEMALLOC_H_INLINES */
/******************************************************************************/
EOF

16
include/jemalloc/internal/tcache.h
View File

@ -91,7 +91,7 @@ extern __thread tcache_t *tcache_tls
extern pthread_key_t tcache_tsd; extern pthread_key_t tcache_tsd;
/* /*
* Number of tcache bins. There are nbins small-object bins, plus 0 or more * Number of tcache bins. There are NBINS small-object bins, plus 0 or more
* large-object bins. * large-object bins.
*/ */
extern size_t nhbins; extern size_t nhbins;
@ -181,7 +181,7 @@ tcache_event(tcache_t *tcache)
* Flush (ceiling) 3/4 of the objects below the low * Flush (ceiling) 3/4 of the objects below the low
* water mark. * water mark.
*/ */
if (binind < nbins) { if (binind < NBINS) {
tcache_bin_flush_small(tbin, binind, tcache_bin_flush_small(tbin, binind,
tbin->ncached - tbin->low_water + tbin->ncached - tbin->low_water +
(tbin->low_water >> 2), tcache); (tbin->low_water >> 2), tcache);
@ -238,7 +238,7 @@ tcache_alloc_small(tcache_t *tcache, size_t size, bool zero)
tcache_bin_t *tbin; tcache_bin_t *tbin;
binind = SMALL_SIZE2BIN(size); binind = SMALL_SIZE2BIN(size);
assert(binind < nbins); assert(binind < NBINS);
tbin = &tcache->tbins[binind]; tbin = &tcache->tbins[binind];
ret = tcache_alloc_easy(tbin); ret = tcache_alloc_easy(tbin);
if (ret == NULL) { if (ret == NULL) {
@ -275,7 +275,7 @@ tcache_alloc_large(tcache_t *tcache, size_t size, bool zero)
size = PAGE_CEILING(size); size = PAGE_CEILING(size);
assert(size <= tcache_maxclass); assert(size <= tcache_maxclass);
binind = nbins + (size >> PAGE_SHIFT) - 1; binind = NBINS + (size >> PAGE_SHIFT) - 1;
assert(binind < nhbins); assert(binind < nhbins);
tbin = &tcache->tbins[binind]; tbin = &tcache->tbins[binind];
ret = tcache_alloc_easy(tbin); ret = tcache_alloc_easy(tbin);
@ -328,7 +328,7 @@ tcache_dalloc_small(tcache_t *tcache, void *ptr)
size_t pageind, binind; size_t pageind, binind;
arena_chunk_map_t *mapelm; arena_chunk_map_t *mapelm;
assert(arena_salloc(ptr) <= small_maxclass); assert(arena_salloc(ptr) <= SMALL_MAXCLASS);
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
arena = chunk->arena; arena = chunk->arena;
@ -339,7 +339,7 @@ tcache_dalloc_small(tcache_t *tcache, void *ptr)
bin = run->bin; bin = run->bin;
binind = ((uintptr_t)bin - (uintptr_t)&arena->bins) / binind = ((uintptr_t)bin - (uintptr_t)&arena->bins) /
sizeof(arena_bin_t); sizeof(arena_bin_t);
assert(binind < nbins); assert(binind < NBINS);
if (config_fill && opt_junk) if (config_fill && opt_junk)
memset(ptr, 0x5a, arena_bin_info[binind].reg_size); memset(ptr, 0x5a, arena_bin_info[binind].reg_size);
@ -367,13 +367,13 @@ tcache_dalloc_large(tcache_t *tcache, void *ptr, size_t size)
tcache_bin_info_t *tbin_info; tcache_bin_info_t *tbin_info;
assert((size & PAGE_MASK) == 0); assert((size & PAGE_MASK) == 0);
assert(arena_salloc(ptr) > small_maxclass); assert(arena_salloc(ptr) > SMALL_MAXCLASS);
assert(arena_salloc(ptr) <= tcache_maxclass); assert(arena_salloc(ptr) <= tcache_maxclass);
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
arena = chunk->arena; arena = chunk->arena;
pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> PAGE_SHIFT; pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> PAGE_SHIFT;
binind = nbins + (size >> PAGE_SHIFT) - 1; binind = NBINS + (size >> PAGE_SHIFT) - 1;
if (config_fill && opt_junk) if (config_fill && opt_junk)
memset(ptr, 0x5a, size); memset(ptr, 0x5a, size);

3
include/jemalloc/jemalloc_defs.h.in
View File

@ -104,9 +104,6 @@
/* Support lazy locking (avoid locking unless a second thread is launched). */ /* Support lazy locking (avoid locking unless a second thread is launched). */
#undef JEMALLOC_LAZY_LOCK #undef JEMALLOC_LAZY_LOCK
/* Determine page size at run time if defined. */
#undef DYNAMIC_PAGE_SHIFT
/* One page is 2^STATIC_PAGE_SHIFT bytes. */ /* One page is 2^STATIC_PAGE_SHIFT bytes. */
#undef STATIC_PAGE_SHIFT #undef STATIC_PAGE_SHIFT

365
src/arena.c
View File

@ -4,128 +4,38 @@
/******************************************************************************/ /******************************************************************************/
/* Data. */ /* Data. */
size_t opt_lg_qspace_max = LG_QSPACE_MAX_DEFAULT;
size_t opt_lg_cspace_max = LG_CSPACE_MAX_DEFAULT;
ssize_t opt_lg_dirty_mult = LG_DIRTY_MULT_DEFAULT; ssize_t opt_lg_dirty_mult = LG_DIRTY_MULT_DEFAULT;
uint8_t const *small_size2bin; arena_bin_info_t arena_bin_info[NBINS];
arena_bin_info_t *arena_bin_info;
/* Various bin-related settings. */ JEMALLOC_ATTR(aligned(CACHELINE))
unsigned nqbins; const uint8_t small_size2bin[] = {
unsigned ncbins;
unsigned nsbins;
unsigned nbins;
size_t qspace_max;
size_t cspace_min;
size_t cspace_max;
size_t sspace_min;
size_t sspace_max;
size_t lg_mspace;
size_t mspace_mask;
/*
* const_small_size2bin is a static constant lookup table that in the common
* case can be used as-is for small_size2bin.
*/
#define S2B_8(i) i, #define S2B_8(i) i,
#define S2B_16(i) S2B_8(i) S2B_8(i) #define S2B_16(i) S2B_8(i) S2B_8(i)
#define S2B_32(i) S2B_16(i) S2B_16(i) #define S2B_32(i) S2B_16(i) S2B_16(i)
#define S2B_64(i) S2B_32(i) S2B_32(i) #define S2B_64(i) S2B_32(i) S2B_32(i)
#define S2B_128(i) S2B_64(i) S2B_64(i) #define S2B_128(i) S2B_64(i) S2B_64(i)
#define S2B_256(i) S2B_128(i) S2B_128(i) #define S2B_256(i) S2B_128(i) S2B_128(i)
/* #define S2B_512(i) S2B_256(i) S2B_256(i)
* The number of elements in const_small_size2bin is dependent on the #define S2B_1024(i) S2B_512(i) S2B_512(i)
* definition for SUBPAGE. #define S2B_2048(i) S2B_1024(i) S2B_1024(i)
*/ #define S2B_4096(i) S2B_2048(i) S2B_2048(i)
static JEMALLOC_ATTR(aligned(CACHELINE)) #define S2B_8192(i) S2B_4096(i) S2B_4096(i)
const uint8_t const_small_size2bin[] = { #define SIZE_CLASS(bin, delta, size) \
#if (LG_QUANTUM == 4) S2B_##delta(bin)
/* 16-byte quantum **********************/ SIZE_CLASSES
S2B_8(0) /* 8 */
S2B_8(1) /* 16 */
# define S2B_QMIN 1
S2B_16(S2B_QMIN + 1) /* 32 */
S2B_16(S2B_QMIN + 2) /* 48 */
S2B_16(S2B_QMIN + 3) /* 64 */
S2B_16(S2B_QMIN + 4) /* 80 */
S2B_16(S2B_QMIN + 5) /* 96 */
S2B_16(S2B_QMIN + 6) /* 112 */
S2B_16(S2B_QMIN + 7) /* 128 */
# define S2B_CMIN (S2B_QMIN + 8)
#else
/* 8-byte quantum ***********************/
# define S2B_QMIN 0
S2B_8(S2B_QMIN + 0) /* 8 */
S2B_8(S2B_QMIN + 1) /* 16 */
S2B_8(S2B_QMIN + 2) /* 24 */
S2B_8(S2B_QMIN + 3) /* 32 */
S2B_8(S2B_QMIN + 4) /* 40 */
S2B_8(S2B_QMIN + 5) /* 48 */
S2B_8(S2B_QMIN + 6) /* 56 */
S2B_8(S2B_QMIN + 7) /* 64 */
S2B_8(S2B_QMIN + 8) /* 72 */
S2B_8(S2B_QMIN + 9) /* 80 */
S2B_8(S2B_QMIN + 10) /* 88 */
S2B_8(S2B_QMIN + 11) /* 96 */
S2B_8(S2B_QMIN + 12) /* 104 */
S2B_8(S2B_QMIN + 13) /* 112 */
S2B_8(S2B_QMIN + 14) /* 120 */
S2B_8(S2B_QMIN + 15) /* 128 */
# define S2B_CMIN (S2B_QMIN + 16)
#endif
/****************************************/
S2B_64(S2B_CMIN + 0) /* 192 */
S2B_64(S2B_CMIN + 1) /* 256 */
S2B_64(S2B_CMIN + 2) /* 320 */
S2B_64(S2B_CMIN + 3) /* 384 */
S2B_64(S2B_CMIN + 4) /* 448 */
S2B_64(S2B_CMIN + 5) /* 512 */
# define S2B_SMIN (S2B_CMIN + 6)
S2B_256(S2B_SMIN + 0) /* 768 */
S2B_256(S2B_SMIN + 1) /* 1024 */
S2B_256(S2B_SMIN + 2) /* 1280 */
S2B_256(S2B_SMIN + 3) /* 1536 */
S2B_256(S2B_SMIN + 4) /* 1792 */
S2B_256(S2B_SMIN + 5) /* 2048 */
S2B_256(S2B_SMIN + 6) /* 2304 */
S2B_256(S2B_SMIN + 7) /* 2560 */
S2B_256(S2B_SMIN + 8) /* 2816 */
S2B_256(S2B_SMIN + 9) /* 3072 */
S2B_256(S2B_SMIN + 10) /* 3328 */
S2B_256(S2B_SMIN + 11) /* 3584 */
S2B_256(S2B_SMIN + 12) /* 3840 */
#if (STATIC_PAGE_SHIFT == 13)
S2B_256(S2B_SMIN + 13) /* 4096 */
S2B_256(S2B_SMIN + 14) /* 4352 */
S2B_256(S2B_SMIN + 15) /* 4608 */
S2B_256(S2B_SMIN + 16) /* 4864 */
S2B_256(S2B_SMIN + 17) /* 5120 */
S2B_256(S2B_SMIN + 18) /* 5376 */
S2B_256(S2B_SMIN + 19) /* 5632 */
S2B_256(S2B_SMIN + 20) /* 5888 */
S2B_256(S2B_SMIN + 21) /* 6144 */
S2B_256(S2B_SMIN + 22) /* 6400 */
S2B_256(S2B_SMIN + 23) /* 6656 */
S2B_256(S2B_SMIN + 24) /* 6912 */
S2B_256(S2B_SMIN + 25) /* 7168 */
S2B_256(S2B_SMIN + 26) /* 7424 */
S2B_256(S2B_SMIN + 27) /* 7680 */
S2B_256(S2B_SMIN + 28) /* 7936 */
#endif
};
#undef S2B_1
#undef S2B_2
#undef S2B_4
#undef S2B_8 #undef S2B_8
#undef S2B_16 #undef S2B_16
#undef S2B_32 #undef S2B_32
#undef S2B_64 #undef S2B_64
#undef S2B_128 #undef S2B_128
#undef S2B_256 #undef S2B_256
#undef S2B_QMIN #undef S2B_512
#undef S2B_CMIN #undef S2B_1024
#undef S2B_SMIN #undef S2B_2048
#undef S2B_4096
#undef S2B_8192
#undef SIZE_CLASS
};
/******************************************************************************/ /******************************************************************************/
/* Function prototypes for non-inline static functions. */ /* Function prototypes for non-inline static functions. */
@ -160,12 +70,9 @@ static bool arena_ralloc_large_grow(arena_t *arena, arena_chunk_t *chunk,
void *ptr, size_t oldsize, size_t size, size_t extra, bool zero); void *ptr, size_t oldsize, size_t size, size_t extra, bool zero);
static bool arena_ralloc_large(void *ptr, size_t oldsize, size_t size, static bool arena_ralloc_large(void *ptr, size_t oldsize, size_t size,
size_t extra, bool zero); size_t extra, bool zero);
static bool small_size2bin_init(void);
static void small_size2bin_validate(void);
static bool small_size2bin_init_hard(void);
static size_t bin_info_run_size_calc(arena_bin_info_t *bin_info, static size_t bin_info_run_size_calc(arena_bin_info_t *bin_info,
size_t min_run_size); size_t min_run_size);
static bool bin_info_init(void); static void bin_info_init(void);
/******************************************************************************/ /******************************************************************************/
@ -1368,7 +1275,7 @@ arena_malloc_small(arena_t *arena, size_t size, bool zero)
size_t binind; size_t binind;
binind = SMALL_SIZE2BIN(size); binind = SMALL_SIZE2BIN(size);
assert(binind < nbins); assert(binind < NBINS);
bin = &arena->bins[binind]; bin = &arena->bins[binind];
size = arena_bin_info[binind].reg_size; size = arena_bin_info[binind].reg_size;
@ -1553,12 +1460,12 @@ arena_prof_promoted(const void *ptr, size_t size)
assert(ptr != NULL); assert(ptr != NULL);
assert(CHUNK_ADDR2BASE(ptr) != ptr); assert(CHUNK_ADDR2BASE(ptr) != ptr);
assert(isalloc(ptr) == PAGE_SIZE); assert(isalloc(ptr) == PAGE_SIZE);
assert(size <= small_maxclass); assert(size <= SMALL_MAXCLASS);
chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr); chunk = (arena_chunk_t *)CHUNK_ADDR2BASE(ptr);
pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> PAGE_SHIFT; pageind = ((uintptr_t)ptr - (uintptr_t)chunk) >> PAGE_SHIFT;
binind = SMALL_SIZE2BIN(size); binind = SMALL_SIZE2BIN(size);
assert(binind < nbins); assert(binind < NBINS);
chunk->map[pageind-map_bias].bits = (chunk->map[pageind-map_bias].bits & chunk->map[pageind-map_bias].bits = (chunk->map[pageind-map_bias].bits &
~CHUNK_MAP_CLASS_MASK) | ((binind+1) << CHUNK_MAP_CLASS_SHIFT); ~CHUNK_MAP_CLASS_MASK) | ((binind+1) << CHUNK_MAP_CLASS_SHIFT);
} }
@ -1594,7 +1501,7 @@ arena_salloc_demote(const void *ptr)
CHUNK_MAP_CLASS_MASK) != 0) { CHUNK_MAP_CLASS_MASK) != 0) {
size_t binind = ((mapbits & CHUNK_MAP_CLASS_MASK) >> size_t binind = ((mapbits & CHUNK_MAP_CLASS_MASK) >>
CHUNK_MAP_CLASS_SHIFT) - 1; CHUNK_MAP_CLASS_SHIFT) - 1;
assert(binind < nbins); assert(binind < NBINS);
ret = arena_bin_info[binind].reg_size; ret = arena_bin_info[binind].reg_size;
} }
assert(ret != 0); assert(ret != 0);
@ -1762,7 +1669,7 @@ arena_stats_merge(arena_t *arena, size_t *nactive, size_t *ndirty,
} }
malloc_mutex_unlock(&arena->lock); malloc_mutex_unlock(&arena->lock);
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
arena_bin_t *bin = &arena->bins[i]; arena_bin_t *bin = &arena->bins[i];
malloc_mutex_lock(&bin->lock); malloc_mutex_lock(&bin->lock);
@ -1963,10 +1870,10 @@ arena_ralloc_no_move(void *ptr, size_t oldsize, size_t size, size_t extra,
* Avoid moving the allocation if the size class can be left the same. * Avoid moving the allocation if the size class can be left the same.
*/ */
if (oldsize <= arena_maxclass) { if (oldsize <= arena_maxclass) {
if (oldsize <= small_maxclass) { if (oldsize <= SMALL_MAXCLASS) {
assert(arena_bin_info[SMALL_SIZE2BIN(oldsize)].reg_size assert(arena_bin_info[SMALL_SIZE2BIN(oldsize)].reg_size
== oldsize); == oldsize);
if ((size + extra <= small_maxclass && if ((size + extra <= SMALL_MAXCLASS &&
SMALL_SIZE2BIN(size + extra) == SMALL_SIZE2BIN(size + extra) ==
SMALL_SIZE2BIN(oldsize)) || (size <= oldsize && SMALL_SIZE2BIN(oldsize)) || (size <= oldsize &&
size + extra >= oldsize)) { size + extra >= oldsize)) {
@ -1978,7 +1885,7 @@ arena_ralloc_no_move(void *ptr, size_t oldsize, size_t size, size_t extra,
} }
} else { } else {
assert(size <= arena_maxclass); assert(size <= arena_maxclass);
if (size + extra > small_maxclass) { if (size + extra > SMALL_MAXCLASS) {
if (arena_ralloc_large(ptr, oldsize, size, if (arena_ralloc_large(ptr, oldsize, size,
extra, zero) == false) extra, zero) == false)
return (ptr); return (ptr);
@ -2083,7 +1990,7 @@ arena_new(arena_t *arena, unsigned ind)
arena_avail_tree_new(&arena->runs_avail_dirty); arena_avail_tree_new(&arena->runs_avail_dirty);
/* Initialize bins. */ /* Initialize bins. */
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
bin = &arena->bins[i]; bin = &arena->bins[i];
if (malloc_mutex_init(&bin->lock)) if (malloc_mutex_init(&bin->lock))
return (true); return (true);
@ -2096,119 +2003,6 @@ arena_new(arena_t *arena, unsigned ind)
return (false); return (false);
} }
static void
small_size2bin_validate(void)
{
size_t i, size, binind;
i = 1;
/* Tiny. */
for (; i < TINY_MIN; i++) {
size = TINY_MIN;
binind = ffs((int)(size >> (LG_TINY_MIN + 1)));
assert(SMALL_SIZE2BIN(i) == binind);
}
for (; i < qspace_min; i++) {
size = pow2_ceil(i);
binind = ffs((int)(size >> (LG_TINY_MIN + 1)));
assert(SMALL_SIZE2BIN(i) == binind);
}
/* Quantum-spaced. */
for (; i <= qspace_max; i++) {
size = QUANTUM_CEILING(i);
binind = ntbins + (size >> LG_QUANTUM) - 1;
assert(SMALL_SIZE2BIN(i) == binind);
}
/* Cacheline-spaced. */
for (; i <= cspace_max; i++) {
size = CACHELINE_CEILING(i);
binind = ntbins + nqbins + ((size - cspace_min) >>
LG_CACHELINE);
assert(SMALL_SIZE2BIN(i) == binind);
}
/* Sub-page. */
for (; i <= sspace_max; i++) {
size = SUBPAGE_CEILING(i);
binind = ntbins + nqbins + ncbins + ((size - sspace_min)
>> LG_SUBPAGE);
assert(SMALL_SIZE2BIN(i) == binind);
}
}
static bool
small_size2bin_init(void)
{
if (opt_lg_qspace_max != LG_QSPACE_MAX_DEFAULT
|| opt_lg_cspace_max != LG_CSPACE_MAX_DEFAULT
|| (sizeof(const_small_size2bin) != ((small_maxclass-1) >>
LG_TINY_MIN) + 1))
return (small_size2bin_init_hard());
small_size2bin = const_small_size2bin;
if (config_debug)
small_size2bin_validate();
return (false);
}
static bool
small_size2bin_init_hard(void)
{
size_t i, size, binind;
uint8_t *custom_small_size2bin;
#define CUSTOM_SMALL_SIZE2BIN(s) \
custom_small_size2bin[(s-1) >> LG_TINY_MIN]
assert(opt_lg_qspace_max != LG_QSPACE_MAX_DEFAULT
|| opt_lg_cspace_max != LG_CSPACE_MAX_DEFAULT
|| (sizeof(const_small_size2bin) != ((small_maxclass-1) >>
LG_TINY_MIN) + 1));
custom_small_size2bin = (uint8_t *)
base_alloc(small_maxclass >> LG_TINY_MIN);
if (custom_small_size2bin == NULL)
return (true);
i = 1;
/* Tiny. */
for (; i < TINY_MIN; i += TINY_MIN) {
size = TINY_MIN;
binind = ffs((int)(size >> (LG_TINY_MIN + 1)));
CUSTOM_SMALL_SIZE2BIN(i) = binind;
}
for (; i < qspace_min; i += TINY_MIN) {
size = pow2_ceil(i);
binind = ffs((int)(size >> (LG_TINY_MIN + 1)));
CUSTOM_SMALL_SIZE2BIN(i) = binind;
}
/* Quantum-spaced. */
for (; i <= qspace_max; i += TINY_MIN) {
size = QUANTUM_CEILING(i);
binind = ntbins + (size >> LG_QUANTUM) - 1;
CUSTOM_SMALL_SIZE2BIN(i) = binind;
}
/* Cacheline-spaced. */
for (; i <= cspace_max; i += TINY_MIN) {
size = CACHELINE_CEILING(i);
binind = ntbins + nqbins + ((size - cspace_min) >>
LG_CACHELINE);
CUSTOM_SMALL_SIZE2BIN(i) = binind;
}
/* Sub-page. */
for (; i <= sspace_max; i += TINY_MIN) {
size = SUBPAGE_CEILING(i);
binind = ntbins + nqbins + ncbins + ((size - sspace_min) >>
LG_SUBPAGE);
CUSTOM_SMALL_SIZE2BIN(i) = binind;
}
small_size2bin = custom_small_size2bin;
if (config_debug)
small_size2bin_validate();
return (false);
#undef CUSTOM_SMALL_SIZE2BIN
}
/* /*
* Calculate bin_info->run_size such that it meets the following constraints: * Calculate bin_info->run_size such that it meets the following constraints:
* *
@ -2330,104 +2124,27 @@ bin_info_run_size_calc(arena_bin_info_t *bin_info, size_t min_run_size)
return (good_run_size); return (good_run_size);
} }
static bool static void
bin_info_init(void) bin_info_init(void)
{ {
arena_bin_info_t *bin_info; arena_bin_info_t *bin_info;
unsigned i; size_t prev_run_size = PAGE_SIZE;
size_t prev_run_size;
arena_bin_info = base_alloc(sizeof(arena_bin_info_t) * nbins); #define SIZE_CLASS(bin, delta, size) \
if (arena_bin_info == NULL) bin_info = &arena_bin_info[bin]; \
return (true); bin_info->reg_size = size; \
prev_run_size = bin_info_run_size_calc(bin_info, prev_run_size);\
prev_run_size = PAGE_SIZE;
i = 0;
/* (2^n)-spaced tiny bins. */
for (; i < ntbins; i++) {
bin_info = &arena_bin_info[i];
bin_info->reg_size = (1U << (LG_TINY_MIN + i));
prev_run_size = bin_info_run_size_calc(bin_info, prev_run_size);
bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs); bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs);
} SIZE_CLASSES
/* Quantum-spaced bins. */ #undef SIZE_CLASS
for (; i < ntbins + nqbins; i++) {
bin_info = &arena_bin_info[i];
bin_info->reg_size = (i - ntbins + 1) << LG_QUANTUM;
prev_run_size = bin_info_run_size_calc(bin_info, prev_run_size);
bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs);
}
/* Cacheline-spaced bins. */
for (; i < ntbins + nqbins + ncbins; i++) {
bin_info = &arena_bin_info[i];
bin_info->reg_size = cspace_min + ((i - (ntbins + nqbins)) <<
LG_CACHELINE);
prev_run_size = bin_info_run_size_calc(bin_info, prev_run_size);
bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs);
}
/* Subpage-spaced bins. */
for (; i < nbins; i++) {
bin_info = &arena_bin_info[i];
bin_info->reg_size = sspace_min + ((i - (ntbins + nqbins +
ncbins)) << LG_SUBPAGE);
prev_run_size = bin_info_run_size_calc(bin_info, prev_run_size);
bitmap_info_init(&bin_info->bitmap_info, bin_info->nregs);
}
return (false);
} }
bool void
arena_boot(void) arena_boot(void)
{ {
size_t header_size; size_t header_size;
unsigned i; unsigned i;
/* Set variables according to the value of opt_lg_[qc]space_max. */
qspace_max = (1U << opt_lg_qspace_max);
cspace_min = CACHELINE_CEILING(qspace_max);
if (cspace_min == qspace_max)
cspace_min += CACHELINE;
cspace_max = (1U << opt_lg_cspace_max);
sspace_min = SUBPAGE_CEILING(cspace_max);
if (sspace_min == cspace_max)
sspace_min += SUBPAGE;
assert(sspace_min < PAGE_SIZE);
sspace_max = PAGE_SIZE - SUBPAGE;
assert(LG_QUANTUM >= LG_TINY_MIN);
assert(ntbins <= LG_QUANTUM);
nqbins = qspace_max >> LG_QUANTUM;
ncbins = ((cspace_max - cspace_min) >> LG_CACHELINE) + 1;
nsbins = ((sspace_max - sspace_min) >> LG_SUBPAGE) + 1;
nbins = ntbins + nqbins + ncbins + nsbins;
/*
* The small_size2bin lookup table uses uint8_t to encode each bin
* index, so we cannot support more than 256 small size classes. This
* limit is difficult to exceed (not even possible with 16B quantum and
* 4KiB pages), and such configurations are impractical, but
* nonetheless we need to protect against this case in order to avoid
* undefined behavior.
*
* Further constrain nbins to 255 if prof_promote is true, since all
* small size classes, plus a "not small" size class must be stored in
* 8 bits of arena_chunk_map_t's bits field.
*/
if (config_prof && opt_prof && prof_promote && nbins > 255) {
char line_buf[UMAX2S_BUFSIZE];
malloc_write("<jemalloc>: Too many small size classes (");
malloc_write(u2s(nbins, 10, line_buf));
malloc_write(" > max 255)\n");
abort();
} else if (nbins > 256) {
char line_buf[UMAX2S_BUFSIZE];
malloc_write("<jemalloc>: Too many small size classes (");
malloc_write(u2s(nbins, 10, line_buf));
malloc_write(" > max 256)\n");
abort();
}
/* /*
* Compute the header size such that it is large enough to contain the * Compute the header size such that it is large enough to contain the
* page map. The page map is biased to omit entries for the header * page map. The page map is biased to omit entries for the header
@ -2451,11 +2168,5 @@ arena_boot(void)
arena_maxclass = chunksize - (map_bias << PAGE_SHIFT); arena_maxclass = chunksize - (map_bias << PAGE_SHIFT);
if (small_size2bin_init()) bin_info_init();
return (true);
if (bin_info_init())
return (true);
return (false);
} }

69
src/ctl.c
View File

@ -47,7 +47,6 @@ CTL_PROTO(thread_deallocated)
CTL_PROTO(thread_deallocatedp) CTL_PROTO(thread_deallocatedp)
CTL_PROTO(config_debug) CTL_PROTO(config_debug)
CTL_PROTO(config_dss) CTL_PROTO(config_dss)
CTL_PROTO(config_dynamic_page_shift)
CTL_PROTO(config_fill) CTL_PROTO(config_fill)
CTL_PROTO(config_lazy_lock) CTL_PROTO(config_lazy_lock)
CTL_PROTO(config_prof) CTL_PROTO(config_prof)
@ -59,8 +58,6 @@ CTL_PROTO(config_tcache)
CTL_PROTO(config_tls) CTL_PROTO(config_tls)
CTL_PROTO(config_xmalloc) CTL_PROTO(config_xmalloc)
CTL_PROTO(opt_abort) CTL_PROTO(opt_abort)
CTL_PROTO(opt_lg_qspace_max)
CTL_PROTO(opt_lg_cspace_max)
CTL_PROTO(opt_lg_chunk) CTL_PROTO(opt_lg_chunk)
CTL_PROTO(opt_narenas) CTL_PROTO(opt_narenas)
CTL_PROTO(opt_lg_dirty_mult) CTL_PROTO(opt_lg_dirty_mult)
@ -88,23 +85,9 @@ INDEX_PROTO(arenas_lrun_i)
CTL_PROTO(arenas_narenas) CTL_PROTO(arenas_narenas)
CTL_PROTO(arenas_initialized) CTL_PROTO(arenas_initialized)
CTL_PROTO(arenas_quantum) CTL_PROTO(arenas_quantum)
CTL_PROTO(arenas_cacheline)
CTL_PROTO(arenas_subpage)
CTL_PROTO(arenas_pagesize) CTL_PROTO(arenas_pagesize)
CTL_PROTO(arenas_chunksize) CTL_PROTO(arenas_chunksize)
CTL_PROTO(arenas_tspace_min)
CTL_PROTO(arenas_tspace_max)
CTL_PROTO(arenas_qspace_min)
CTL_PROTO(arenas_qspace_max)
CTL_PROTO(arenas_cspace_min)
CTL_PROTO(arenas_cspace_max)
CTL_PROTO(arenas_sspace_min)
CTL_PROTO(arenas_sspace_max)
CTL_PROTO(arenas_tcache_max) CTL_PROTO(arenas_tcache_max)
CTL_PROTO(arenas_ntbins)
CTL_PROTO(arenas_nqbins)
CTL_PROTO(arenas_ncbins)
CTL_PROTO(arenas_nsbins)
CTL_PROTO(arenas_nbins) CTL_PROTO(arenas_nbins)
CTL_PROTO(arenas_nhbins) CTL_PROTO(arenas_nhbins)
CTL_PROTO(arenas_nlruns) CTL_PROTO(arenas_nlruns)
@ -185,7 +168,6 @@ static const ctl_node_t thread_node[] = {
static const ctl_node_t config_node[] = { static const ctl_node_t config_node[] = {
{NAME("debug"), CTL(config_debug)}, {NAME("debug"), CTL(config_debug)},
{NAME("dss"), CTL(config_dss)}, {NAME("dss"), CTL(config_dss)},
{NAME("dynamic_page_shift"), CTL(config_dynamic_page_shift)},
{NAME("fill"), CTL(config_fill)}, {NAME("fill"), CTL(config_fill)},
{NAME("lazy_lock"), CTL(config_lazy_lock)}, {NAME("lazy_lock"), CTL(config_lazy_lock)},
{NAME("prof"), CTL(config_prof)}, {NAME("prof"), CTL(config_prof)},
@ -200,8 +182,6 @@ static const ctl_node_t config_node[] = {
static const ctl_node_t opt_node[] = { static const ctl_node_t opt_node[] = {
{NAME("abort"), CTL(opt_abort)}, {NAME("abort"), CTL(opt_abort)},
{NAME("lg_qspace_max"), CTL(opt_lg_qspace_max)},
{NAME("lg_cspace_max"), CTL(opt_lg_cspace_max)},
{NAME("lg_chunk"), CTL(opt_lg_chunk)}, {NAME("lg_chunk"), CTL(opt_lg_chunk)},
{NAME("narenas"), CTL(opt_narenas)}, {NAME("narenas"), CTL(opt_narenas)},
{NAME("lg_dirty_mult"), CTL(opt_lg_dirty_mult)}, {NAME("lg_dirty_mult"), CTL(opt_lg_dirty_mult)},
@ -250,23 +230,9 @@ static const ctl_node_t arenas_node[] = {
{NAME("narenas"), CTL(arenas_narenas)}, {NAME("narenas"), CTL(arenas_narenas)},
{NAME("initialized"), CTL(arenas_initialized)}, {NAME("initialized"), CTL(arenas_initialized)},
{NAME("quantum"), CTL(arenas_quantum)}, {NAME("quantum"), CTL(arenas_quantum)},
{NAME("cacheline"), CTL(arenas_cacheline)},
{NAME("subpage"), CTL(arenas_subpage)},
{NAME("pagesize"), CTL(arenas_pagesize)}, {NAME("pagesize"), CTL(arenas_pagesize)},
{NAME("chunksize"), CTL(arenas_chunksize)}, {NAME("chunksize"), CTL(arenas_chunksize)},
{NAME("tspace_min"), CTL(arenas_tspace_min)},
{NAME("tspace_max"), CTL(arenas_tspace_max)},
{NAME("qspace_min"), CTL(arenas_qspace_min)},
{NAME("qspace_max"), CTL(arenas_qspace_max)},
{NAME("cspace_min"), CTL(arenas_cspace_min)},
{NAME("cspace_max"), CTL(arenas_cspace_max)},
{NAME("sspace_min"), CTL(arenas_sspace_min)},
{NAME("sspace_max"), CTL(arenas_sspace_max)},
{NAME("tcache_max"), CTL(arenas_tcache_max)}, {NAME("tcache_max"), CTL(arenas_tcache_max)},
{NAME("ntbins"), CTL(arenas_ntbins)},
{NAME("nqbins"), CTL(arenas_nqbins)},
{NAME("ncbins"), CTL(arenas_ncbins)},
{NAME("nsbins"), CTL(arenas_nsbins)},
{NAME("nbins"), CTL(arenas_nbins)}, {NAME("nbins"), CTL(arenas_nbins)},
{NAME("nhbins"), CTL(arenas_nhbins)}, {NAME("nhbins"), CTL(arenas_nhbins)},
{NAME("bin"), CHILD(arenas_bin)}, {NAME("bin"), CHILD(arenas_bin)},
@ -397,12 +363,6 @@ static bool
ctl_arena_init(ctl_arena_stats_t *astats) ctl_arena_init(ctl_arena_stats_t *astats)
{ {
if (astats->bstats == NULL) {
astats->bstats = (malloc_bin_stats_t *)base_alloc(nbins *
sizeof(malloc_bin_stats_t));
if (astats->bstats == NULL)
return (true);
}
if (astats->lstats == NULL) { if (astats->lstats == NULL) {
astats->lstats = (malloc_large_stats_t *)base_alloc(nlclasses * astats->lstats = (malloc_large_stats_t *)base_alloc(nlclasses *
sizeof(malloc_large_stats_t)); sizeof(malloc_large_stats_t));
@ -425,7 +385,7 @@ ctl_arena_clear(ctl_arena_stats_t *astats)
astats->nmalloc_small = 0; astats->nmalloc_small = 0;
astats->ndalloc_small = 0; astats->ndalloc_small = 0;
astats->nrequests_small = 0; astats->nrequests_small = 0;
memset(astats->bstats, 0, nbins * sizeof(malloc_bin_stats_t)); memset(astats->bstats, 0, NBINS * sizeof(malloc_bin_stats_t));
memset(astats->lstats, 0, nlclasses * memset(astats->lstats, 0, nlclasses *
sizeof(malloc_large_stats_t)); sizeof(malloc_large_stats_t));
} }
@ -439,7 +399,7 @@ ctl_arena_stats_amerge(ctl_arena_stats_t *cstats, arena_t *arena)
arena_stats_merge(arena, &cstats->pactive, &cstats->pdirty, arena_stats_merge(arena, &cstats->pactive, &cstats->pdirty,
&cstats->astats, cstats->bstats, cstats->lstats); &cstats->astats, cstats->bstats, cstats->lstats);
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
cstats->allocated_small += cstats->bstats[i].allocated; cstats->allocated_small += cstats->bstats[i].allocated;
cstats->nmalloc_small += cstats->bstats[i].nmalloc; cstats->nmalloc_small += cstats->bstats[i].nmalloc;
cstats->ndalloc_small += cstats->bstats[i].ndalloc; cstats->ndalloc_small += cstats->bstats[i].ndalloc;
@ -477,7 +437,7 @@ ctl_arena_stats_smerge(ctl_arena_stats_t *sstats, ctl_arena_stats_t *astats)
sstats->lstats[i].curruns += astats->lstats[i].curruns; sstats->lstats[i].curruns += astats->lstats[i].curruns;
} }
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
sstats->bstats[i].allocated += astats->bstats[i].allocated; sstats->bstats[i].allocated += astats->bstats[i].allocated;
sstats->bstats[i].nmalloc += astats->bstats[i].nmalloc; sstats->bstats[i].nmalloc += astats->bstats[i].nmalloc;
sstats->bstats[i].ndalloc += astats->bstats[i].ndalloc; sstats->bstats[i].ndalloc += astats->bstats[i].ndalloc;
@ -1092,7 +1052,6 @@ CTL_RO_NL_CGEN(config_stats, thread_deallocatedp, DEALLOCATEDP_GET(),
CTL_RO_BOOL_CONFIG_GEN(config_debug) CTL_RO_BOOL_CONFIG_GEN(config_debug)
CTL_RO_BOOL_CONFIG_GEN(config_dss) CTL_RO_BOOL_CONFIG_GEN(config_dss)
CTL_RO_BOOL_CONFIG_GEN(config_dynamic_page_shift)
CTL_RO_BOOL_CONFIG_GEN(config_fill) CTL_RO_BOOL_CONFIG_GEN(config_fill)
CTL_RO_BOOL_CONFIG_GEN(config_lazy_lock) CTL_RO_BOOL_CONFIG_GEN(config_lazy_lock)
CTL_RO_BOOL_CONFIG_GEN(config_prof) CTL_RO_BOOL_CONFIG_GEN(config_prof)
@ -1107,8 +1066,6 @@ CTL_RO_BOOL_CONFIG_GEN(config_xmalloc)
/******************************************************************************/ /******************************************************************************/
CTL_RO_NL_GEN(opt_abort, opt_abort, bool) CTL_RO_NL_GEN(opt_abort, opt_abort, bool)
CTL_RO_NL_GEN(opt_lg_qspace_max, opt_lg_qspace_max, size_t)
CTL_RO_NL_GEN(opt_lg_cspace_max, opt_lg_cspace_max, size_t)
CTL_RO_NL_GEN(opt_lg_chunk, opt_lg_chunk, size_t) CTL_RO_NL_GEN(opt_lg_chunk, opt_lg_chunk, size_t)
CTL_RO_NL_GEN(opt_narenas, opt_narenas, size_t) CTL_RO_NL_GEN(opt_narenas, opt_narenas, size_t)
CTL_RO_NL_GEN(opt_lg_dirty_mult, opt_lg_dirty_mult, ssize_t) CTL_RO_NL_GEN(opt_lg_dirty_mult, opt_lg_dirty_mult, ssize_t)
@ -1138,7 +1095,7 @@ const ctl_node_t *
arenas_bin_i_index(const size_t *mib, size_t miblen, size_t i) arenas_bin_i_index(const size_t *mib, size_t miblen, size_t i)
{ {
if (i > nbins) if (i > NBINS)
return (NULL); return (NULL);
return (super_arenas_bin_i_node); return (super_arenas_bin_i_node);
} }
@ -1182,24 +1139,10 @@ RETURN:
} }
CTL_RO_NL_GEN(arenas_quantum, QUANTUM, size_t) CTL_RO_NL_GEN(arenas_quantum, QUANTUM, size_t)
CTL_RO_NL_GEN(arenas_cacheline, CACHELINE, size_t)
CTL_RO_NL_GEN(arenas_subpage, SUBPAGE, size_t)
CTL_RO_NL_GEN(arenas_pagesize, PAGE_SIZE, size_t) CTL_RO_NL_GEN(arenas_pagesize, PAGE_SIZE, size_t)
CTL_RO_NL_GEN(arenas_chunksize, chunksize, size_t) CTL_RO_NL_GEN(arenas_chunksize, chunksize, size_t)
CTL_RO_NL_GEN(arenas_tspace_min, TINY_MIN, size_t)
CTL_RO_NL_GEN(arenas_tspace_max, (qspace_min >> 1), size_t)
CTL_RO_NL_GEN(arenas_qspace_min, qspace_min, size_t)
CTL_RO_NL_GEN(arenas_qspace_max, qspace_max, size_t)
CTL_RO_NL_GEN(arenas_cspace_min, cspace_min, size_t)
CTL_RO_NL_GEN(arenas_cspace_max, cspace_max, size_t)
CTL_RO_NL_GEN(arenas_sspace_min, sspace_min, size_t)
CTL_RO_NL_GEN(arenas_sspace_max, sspace_max, size_t)
CTL_RO_NL_CGEN(config_tcache, arenas_tcache_max, tcache_maxclass, size_t) CTL_RO_NL_CGEN(config_tcache, arenas_tcache_max, tcache_maxclass, size_t)
CTL_RO_NL_GEN(arenas_ntbins, ntbins, unsigned) CTL_RO_NL_GEN(arenas_nbins, NBINS, unsigned)
CTL_RO_NL_GEN(arenas_nqbins, nqbins, unsigned)
CTL_RO_NL_GEN(arenas_ncbins, ncbins, unsigned)
CTL_RO_NL_GEN(arenas_nsbins, nsbins, unsigned)
CTL_RO_NL_GEN(arenas_nbins, nbins, unsigned)
CTL_RO_NL_CGEN(config_tcache, arenas_nhbins, nhbins, unsigned) CTL_RO_NL_CGEN(config_tcache, arenas_nhbins, nhbins, unsigned)
CTL_RO_NL_GEN(arenas_nlruns, nlclasses, size_t) CTL_RO_NL_GEN(arenas_nlruns, nlclasses, size_t)
@ -1346,7 +1289,7 @@ const ctl_node_t *
stats_arenas_i_bins_j_index(const size_t *mib, size_t miblen, size_t j) stats_arenas_i_bins_j_index(const size_t *mib, size_t miblen, size_t j)
{ {
if (j > nbins) if (j > NBINS)
return (NULL); return (NULL);
return (super_stats_arenas_i_bins_j_node); return (super_stats_arenas_i_bins_j_node);
} }

53
src/jemalloc.c
View File

@ -95,9 +95,7 @@ arenas_extend(unsigned ind)
{ {
arena_t *ret; arena_t *ret;
/* Allocate enough space for trailing bins. */ ret = (arena_t *)base_alloc(sizeof(arena_t));
ret = (arena_t *)base_alloc(offsetof(arena_t, bins)
+ (sizeof(arena_bin_t) * nbins));
if (ret != NULL && arena_new(ret, ind) == false) { if (ret != NULL && arena_new(ret, ind) == false) {
arenas[ind] = ret; arenas[ind] = ret;
return (ret); return (ret);
@ -563,10 +561,6 @@ malloc_conf_init(void)
} }
CONF_HANDLE_BOOL(abort) CONF_HANDLE_BOOL(abort)
CONF_HANDLE_SIZE_T(lg_qspace_max, LG_QUANTUM,
PAGE_SHIFT-1)
CONF_HANDLE_SIZE_T(lg_cspace_max, LG_QUANTUM,
PAGE_SHIFT-1)
/* /*
* Chunks always require at least one * header page, * Chunks always require at least one * header page,
* plus one data page. * plus one data page.
@ -613,14 +607,6 @@ malloc_conf_init(void)
#undef CONF_HANDLE_SSIZE_T #undef CONF_HANDLE_SSIZE_T
#undef CONF_HANDLE_CHAR_P #undef CONF_HANDLE_CHAR_P
} }
/* Validate configuration of options that are inter-related. */
if (opt_lg_qspace_max+1 >= opt_lg_cspace_max) {
malloc_write("<jemalloc>: Invalid lg_[qc]space_max "
"relationship; restoring defaults\n");
opt_lg_qspace_max = LG_QSPACE_MAX_DEFAULT;
opt_lg_cspace_max = LG_CSPACE_MAX_DEFAULT;
}
} }
} }
@ -709,10 +695,7 @@ malloc_init_hard(void)
if (config_prof) if (config_prof)
prof_boot1(); prof_boot1();
if (arena_boot()) { arena_boot();
malloc_mutex_unlock(&init_lock);
return (true);
}
if (config_tcache && tcache_boot()) { if (config_tcache && tcache_boot()) {
malloc_mutex_unlock(&init_lock); malloc_mutex_unlock(&init_lock);
@ -893,8 +876,8 @@ JEMALLOC_P(malloc)(size_t size)
goto OOM; goto OOM;
} }
if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && usize <= if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && usize <=
small_maxclass) { SMALL_MAXCLASS) {
ret = imalloc(small_maxclass+1); ret = imalloc(SMALL_MAXCLASS+1);
if (ret != NULL) if (ret != NULL)
arena_prof_promoted(ret, usize); arena_prof_promoted(ret, usize);
} else } else
@ -992,10 +975,10 @@ imemalign(void **memptr, size_t alignment, size_t size)
ret = EINVAL; ret = EINVAL;
} else { } else {
if (prof_promote && (uintptr_t)cnt != if (prof_promote && (uintptr_t)cnt !=
(uintptr_t)1U && usize <= small_maxclass) { (uintptr_t)1U && usize <= SMALL_MAXCLASS) {
assert(sa2u(small_maxclass+1, assert(sa2u(SMALL_MAXCLASS+1,
alignment, NULL) != 0); alignment, NULL) != 0);
result = ipalloc(sa2u(small_maxclass+1, result = ipalloc(sa2u(SMALL_MAXCLASS+1,
alignment, NULL), alignment, false); alignment, NULL), alignment, false);
if (result != NULL) { if (result != NULL) {
arena_prof_promoted(result, arena_prof_promoted(result,
@ -1091,8 +1074,8 @@ JEMALLOC_P(calloc)(size_t num, size_t size)
goto RETURN; goto RETURN;
} }
if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && usize if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && usize
<= small_maxclass) { <= SMALL_MAXCLASS) {
ret = icalloc(small_maxclass+1); ret = icalloc(SMALL_MAXCLASS+1);
if (ret != NULL) if (ret != NULL)
arena_prof_promoted(ret, usize); arena_prof_promoted(ret, usize);
} else } else
@ -1177,8 +1160,8 @@ JEMALLOC_P(realloc)(void *ptr, size_t size)
goto OOM; goto OOM;
} }
if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U &&
usize <= small_maxclass) { usize <= SMALL_MAXCLASS) {
ret = iralloc(ptr, small_maxclass+1, 0, 0, ret = iralloc(ptr, SMALL_MAXCLASS+1, 0, 0,
false, false); false, false);
if (ret != NULL) if (ret != NULL)
arena_prof_promoted(ret, usize); arena_prof_promoted(ret, usize);
@ -1220,8 +1203,8 @@ OOM:
else { else {
if (prof_promote && (uintptr_t)cnt != if (prof_promote && (uintptr_t)cnt !=
(uintptr_t)1U && usize <= (uintptr_t)1U && usize <=
small_maxclass) { SMALL_MAXCLASS) {
ret = imalloc(small_maxclass+1); ret = imalloc(SMALL_MAXCLASS+1);
if (ret != NULL) { if (ret != NULL) {
arena_prof_promoted(ret, arena_prof_promoted(ret,
usize); usize);
@ -1436,9 +1419,9 @@ JEMALLOC_P(allocm)(void **ptr, size_t *rsize, size_t size, int flags)
if (cnt == NULL) if (cnt == NULL)
goto OOM; goto OOM;
if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && usize <= if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U && usize <=
small_maxclass) { SMALL_MAXCLASS) {
size_t usize_promoted = (alignment == 0) ? size_t usize_promoted = (alignment == 0) ?
s2u(small_maxclass+1) : sa2u(small_maxclass+1, s2u(SMALL_MAXCLASS+1) : sa2u(SMALL_MAXCLASS+1,
alignment, NULL); alignment, NULL);
assert(usize_promoted != 0); assert(usize_promoted != 0);
p = iallocm(usize_promoted, alignment, zero); p = iallocm(usize_promoted, alignment, zero);
@ -1517,9 +1500,9 @@ JEMALLOC_P(rallocm)(void **ptr, size_t *rsize, size_t size, size_t extra,
*/ */
if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U if (prof_promote && (uintptr_t)cnt != (uintptr_t)1U
&& ((alignment == 0) ? s2u(size) : sa2u(size, && ((alignment == 0) ? s2u(size) : sa2u(size,
alignment, NULL)) <= small_maxclass) { alignment, NULL)) <= SMALL_MAXCLASS) {
q = iralloc(p, small_maxclass+1, (small_maxclass+1 >= q = iralloc(p, SMALL_MAXCLASS+1, (SMALL_MAXCLASS+1 >=
size+extra) ? 0 : size+extra - (small_maxclass+1), size+extra) ? 0 : size+extra - (SMALL_MAXCLASS+1),
alignment, zero, no_move); alignment, zero, no_move);
if (q == NULL) if (q == NULL)
goto ERR; goto ERR;

68
src/stats.c
View File

@ -176,7 +176,6 @@ stats_arena_bins_print(void (*write_cb)(void *, const char *), void *cbopaque,
if (gap_start == UINT_MAX) if (gap_start == UINT_MAX)
gap_start = j; gap_start = j;
} else { } else {
unsigned ntbins_, nqbins, ncbins, nsbins;
size_t reg_size, run_size, allocated; size_t reg_size, run_size, allocated;
uint32_t nregs; uint32_t nregs;
uint64_t nmalloc, ndalloc, nrequests, nfills, nflushes; uint64_t nmalloc, ndalloc, nrequests, nfills, nflushes;
@ -196,10 +195,6 @@ stats_arena_bins_print(void (*write_cb)(void *, const char *), void *cbopaque,
} }
gap_start = UINT_MAX; gap_start = UINT_MAX;
} }
CTL_GET("arenas.ntbins", &ntbins_, unsigned);
CTL_GET("arenas.nqbins", &nqbins, unsigned);
CTL_GET("arenas.ncbins", &ncbins, unsigned);
CTL_GET("arenas.nsbins", &nsbins, unsigned);
CTL_J_GET("arenas.bin.0.size", &reg_size, size_t); CTL_J_GET("arenas.bin.0.size", &reg_size, size_t);
CTL_J_GET("arenas.bin.0.nregs", &nregs, uint32_t); CTL_J_GET("arenas.bin.0.nregs", &nregs, uint32_t);
CTL_J_GET("arenas.bin.0.run_size", &run_size, size_t); CTL_J_GET("arenas.bin.0.run_size", &run_size, size_t);
@ -223,27 +218,19 @@ stats_arena_bins_print(void (*write_cb)(void *, const char *), void *cbopaque,
size_t); size_t);
if (config_tcache) { if (config_tcache) {
malloc_cprintf(write_cb, cbopaque, malloc_cprintf(write_cb, cbopaque,
"%13u %1s %5zu %4u %3zu %12zu %12"PRIu64 "%13u %5zu %4u %3zu %12zu %12"PRIu64
" %12"PRIu64" %12"PRIu64" %12"PRIu64 " %12"PRIu64" %12"PRIu64" %12"PRIu64
" %12"PRIu64" %12"PRIu64" %12"PRIu64 " %12"PRIu64" %12"PRIu64" %12"PRIu64
" %12zu\n", " %12zu\n",
j, j, reg_size, nregs, run_size / pagesize,
j < ntbins_ ? "T" : j < ntbins_ + nqbins ?
"Q" : j < ntbins_ + nqbins + ncbins ? "C" :
"S",
reg_size, nregs, run_size / pagesize,
allocated, nmalloc, ndalloc, nrequests, allocated, nmalloc, ndalloc, nrequests,
nfills, nflushes, nruns, reruns, curruns); nfills, nflushes, nruns, reruns, curruns);
} else { } else {
malloc_cprintf(write_cb, cbopaque, malloc_cprintf(write_cb, cbopaque,
"%13u %1s %5zu %4u %3zu %12zu %12"PRIu64 "%13u %5zu %4u %3zu %12zu %12"PRIu64
" %12"PRIu64" %12"PRIu64" %12"PRIu64 " %12"PRIu64" %12"PRIu64" %12"PRIu64
" %12zu\n", " %12zu\n",
j, j, reg_size, nregs, run_size / pagesize,
j < ntbins_ ? "T" : j < ntbins_ + nqbins ?
"Q" : j < ntbins_ + nqbins + ncbins ? "C" :
"S",
reg_size, nregs, run_size / pagesize,
allocated, nmalloc, ndalloc, nruns, reruns, allocated, nmalloc, ndalloc, nruns, reruns,
curruns); curruns);
} }
@ -496,8 +483,6 @@ stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
write_cb(cbopaque, "Run-time option settings:\n"); write_cb(cbopaque, "Run-time option settings:\n");
OPT_WRITE_BOOL(abort) OPT_WRITE_BOOL(abort)
OPT_WRITE_SIZE_T(lg_qspace_max)
OPT_WRITE_SIZE_T(lg_cspace_max)
OPT_WRITE_SIZE_T(lg_chunk) OPT_WRITE_SIZE_T(lg_chunk)
OPT_WRITE_SIZE_T(narenas) OPT_WRITE_SIZE_T(narenas)
OPT_WRITE_SSIZE_T(lg_dirty_mult) OPT_WRITE_SSIZE_T(lg_dirty_mult)
@ -541,51 +526,6 @@ stats_print(void (*write_cb)(void *, const char *), void *cbopaque,
write_cb(cbopaque, u2s(sv, 10, s)); write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "\n"); write_cb(cbopaque, "\n");
CTL_GET("arenas.cacheline", &sv, size_t);
write_cb(cbopaque, "Cacheline size (assumed): ");
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "\n");
CTL_GET("arenas.subpage", &sv, size_t);
write_cb(cbopaque, "Subpage spacing: ");
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "\n");
if ((err = JEMALLOC_P(mallctl)("arenas.tspace_min", &sv, &ssz,
NULL, 0)) == 0) {
write_cb(cbopaque, "Tiny 2^n-spaced sizes: [");
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "..");
CTL_GET("arenas.tspace_max", &sv, size_t);
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "]\n");
}
CTL_GET("arenas.qspace_min", &sv, size_t);
write_cb(cbopaque, "Quantum-spaced sizes: [");
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "..");
CTL_GET("arenas.qspace_max", &sv, size_t);
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "]\n");
CTL_GET("arenas.cspace_min", &sv, size_t);
write_cb(cbopaque, "Cacheline-spaced sizes: [");
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "..");
CTL_GET("arenas.cspace_max", &sv, size_t);
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "]\n");
CTL_GET("arenas.sspace_min", &sv, size_t);
write_cb(cbopaque, "Subpage-spaced sizes: [");
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "..");
CTL_GET("arenas.sspace_max", &sv, size_t);
write_cb(cbopaque, u2s(sv, 10, s));
write_cb(cbopaque, "]\n");
CTL_GET("opt.lg_dirty_mult", &ssv, ssize_t); CTL_GET("opt.lg_dirty_mult", &ssv, ssize_t);
if (ssv >= 0) { if (ssv >= 0) {
write_cb(cbopaque, write_cb(cbopaque,

31
src/tcache.c
View File

@ -55,7 +55,7 @@ tcache_bin_flush_small(tcache_bin_t *tbin, size_t binind, unsigned rem,
unsigned i, nflush, ndeferred; unsigned i, nflush, ndeferred;
bool merged_stats = false; bool merged_stats = false;
assert(binind < nbins); assert(binind < NBINS);
assert(rem <= tbin->ncached); assert(rem <= tbin->ncached);
for (nflush = tbin->ncached - rem; nflush > 0; nflush = ndeferred) { for (nflush = tbin->ncached - rem; nflush > 0; nflush = ndeferred) {
@ -152,7 +152,7 @@ tcache_bin_flush_large(tcache_bin_t *tbin, size_t binind, unsigned rem,
merged_stats = true; merged_stats = true;
arena->stats.nrequests_large += arena->stats.nrequests_large +=
tbin->tstats.nrequests; tbin->tstats.nrequests;
arena->stats.lstats[binind - nbins].nrequests += arena->stats.lstats[binind - NBINS].nrequests +=
tbin->tstats.nrequests; tbin->tstats.nrequests;
tbin->tstats.nrequests = 0; tbin->tstats.nrequests = 0;
} }
@ -185,7 +185,7 @@ tcache_bin_flush_large(tcache_bin_t *tbin, size_t binind, unsigned rem,
arena_t *arena = tcache->arena; arena_t *arena = tcache->arena;
malloc_mutex_lock(&arena->lock); malloc_mutex_lock(&arena->lock);
arena->stats.nrequests_large += tbin->tstats.nrequests; arena->stats.nrequests_large += tbin->tstats.nrequests;
arena->stats.lstats[binind - nbins].nrequests += arena->stats.lstats[binind - NBINS].nrequests +=
tbin->tstats.nrequests; tbin->tstats.nrequests;
tbin->tstats.nrequests = 0; tbin->tstats.nrequests = 0;
malloc_mutex_unlock(&arena->lock); malloc_mutex_unlock(&arena->lock);
@ -220,7 +220,7 @@ tcache_create(arena_t *arena)
*/ */
size = (size + CACHELINE_MASK) & (-CACHELINE); size = (size + CACHELINE_MASK) & (-CACHELINE);
if (size <= small_maxclass) if (size <= SMALL_MAXCLASS)
tcache = (tcache_t *)arena_malloc_small(arena, size, true); tcache = (tcache_t *)arena_malloc_small(arena, size, true);
else if (size <= tcache_maxclass) else if (size <= tcache_maxclass)
tcache = (tcache_t *)arena_malloc_large(arena, size, true); tcache = (tcache_t *)arena_malloc_large(arena, size, true);
@ -266,7 +266,7 @@ tcache_destroy(tcache_t *tcache)
tcache_stats_merge(tcache, tcache->arena); tcache_stats_merge(tcache, tcache->arena);
} }
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
tcache_bin_t *tbin = &tcache->tbins[i]; tcache_bin_t *tbin = &tcache->tbins[i];
tcache_bin_flush_small(tbin, i, 0, tcache); tcache_bin_flush_small(tbin, i, 0, tcache);
@ -287,7 +287,7 @@ tcache_destroy(tcache_t *tcache)
arena_t *arena = tcache->arena; arena_t *arena = tcache->arena;
malloc_mutex_lock(&arena->lock); malloc_mutex_lock(&arena->lock);
arena->stats.nrequests_large += tbin->tstats.nrequests; arena->stats.nrequests_large += tbin->tstats.nrequests;
arena->stats.lstats[i - nbins].nrequests += arena->stats.lstats[i - NBINS].nrequests +=
tbin->tstats.nrequests; tbin->tstats.nrequests;
malloc_mutex_unlock(&arena->lock); malloc_mutex_unlock(&arena->lock);
} }
@ -300,7 +300,7 @@ tcache_destroy(tcache_t *tcache)
} }
tcache_size = arena_salloc(tcache); tcache_size = arena_salloc(tcache);
if (tcache_size <= small_maxclass) { if (tcache_size <= SMALL_MAXCLASS) {
arena_chunk_t *chunk = CHUNK_ADDR2BASE(tcache); arena_chunk_t *chunk = CHUNK_ADDR2BASE(tcache);
arena_t *arena = chunk->arena; arena_t *arena = chunk->arena;
size_t pageind = ((uintptr_t)tcache - (uintptr_t)chunk) >> size_t pageind = ((uintptr_t)tcache - (uintptr_t)chunk) >>
@ -357,7 +357,7 @@ tcache_stats_merge(tcache_t *tcache, arena_t *arena)
unsigned i; unsigned i;
/* Merge and reset tcache stats. */ /* Merge and reset tcache stats. */
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
arena_bin_t *bin = &arena->bins[i]; arena_bin_t *bin = &arena->bins[i];
tcache_bin_t *tbin = &tcache->tbins[i]; tcache_bin_t *tbin = &tcache->tbins[i];
malloc_mutex_lock(&bin->lock); malloc_mutex_lock(&bin->lock);
@ -367,7 +367,7 @@ tcache_stats_merge(tcache_t *tcache, arena_t *arena)
} }
for (; i < nhbins; i++) { for (; i < nhbins; i++) {
malloc_large_stats_t *lstats = &arena->stats.lstats[i - nbins]; malloc_large_stats_t *lstats = &arena->stats.lstats[i - NBINS];
tcache_bin_t *tbin = &tcache->tbins[i]; tcache_bin_t *tbin = &tcache->tbins[i];
arena->stats.nrequests_large += tbin->tstats.nrequests; arena->stats.nrequests_large += tbin->tstats.nrequests;
lstats->nrequests += tbin->tstats.nrequests; lstats->nrequests += tbin->tstats.nrequests;
@ -384,17 +384,18 @@ tcache_boot(void)
/* /*
* If necessary, clamp opt_lg_tcache_max, now that * If necessary, clamp opt_lg_tcache_max, now that
* small_maxclass and arena_maxclass are known. * SMALL_MAXCLASS and arena_maxclass are known.
* XXX Can this be done earlier?
*/ */
if (opt_lg_tcache_max < 0 || (1U << if (opt_lg_tcache_max < 0 || (1U <<
opt_lg_tcache_max) < small_maxclass) opt_lg_tcache_max) < SMALL_MAXCLASS)
tcache_maxclass = small_maxclass; tcache_maxclass = SMALL_MAXCLASS;
else if ((1U << opt_lg_tcache_max) > arena_maxclass) else if ((1U << opt_lg_tcache_max) > arena_maxclass)
tcache_maxclass = arena_maxclass; tcache_maxclass = arena_maxclass;
else else
tcache_maxclass = (1U << opt_lg_tcache_max); tcache_maxclass = (1U << opt_lg_tcache_max);
nhbins = nbins + (tcache_maxclass >> PAGE_SHIFT); nhbins = NBINS + (tcache_maxclass >> PAGE_SHIFT);
/* Initialize tcache_bin_info. */ /* Initialize tcache_bin_info. */
tcache_bin_info = (tcache_bin_info_t *)base_alloc(nhbins * tcache_bin_info = (tcache_bin_info_t *)base_alloc(nhbins *
@ -402,7 +403,7 @@ tcache_boot(void)
if (tcache_bin_info == NULL) if (tcache_bin_info == NULL)
return (true); return (true);
stack_nelms = 0; stack_nelms = 0;
for (i = 0; i < nbins; i++) { for (i = 0; i < NBINS; i++) {
if ((arena_bin_info[i].nregs << 1) <= if ((arena_bin_info[i].nregs << 1) <=
TCACHE_NSLOTS_SMALL_MAX) { TCACHE_NSLOTS_SMALL_MAX) {
tcache_bin_info[i].ncached_max = tcache_bin_info[i].ncached_max =
@ -421,7 +422,7 @@ tcache_boot(void)
/* Compute incremental GC event threshold. */ /* Compute incremental GC event threshold. */
if (opt_lg_tcache_gc_sweep >= 0) { if (opt_lg_tcache_gc_sweep >= 0) {
tcache_gc_incr = ((1U << opt_lg_tcache_gc_sweep) / tcache_gc_incr = ((1U << opt_lg_tcache_gc_sweep) /
nbins) + (((1U << opt_lg_tcache_gc_sweep) % nbins == NBINS) + (((1U << opt_lg_tcache_gc_sweep) % NBINS ==
0) ? 0 : 1); 0) ? 0 : 1);
} else } else
tcache_gc_incr = 0; tcache_gc_incr = 0;