romenskiy2012/jemalloc
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Add arena-specific and selective dss allocation.

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Add the "arenas.extend" mallctl, so that it is possible to create new
arenas that are outside the set that jemalloc automatically multiplexes
threads onto.

Add the ALLOCM_ARENA() flag for {,r,d}allocm(), so that it is possible
to explicitly allocate from a particular arena.

Add the "opt.dss" mallctl, which controls the default precedence of dss
allocation relative to mmap allocation.

Add the "arena.<i>.dss" mallctl, which makes it possible to set the
default dss precedence on a per arena or global basis.

Add the "arena.<i>.purge" mallctl, which obsoletes "arenas.purge".

Add the "stats.arenas.<i>.dss" mallctl.
This commit is contained in:
Jason Evans 2012-10-11 13:53:15 -07:00
parent d0ffd8ed4f
commit 609ae595f0
23 changed files with 911 additions and 246 deletions
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14
include/jemalloc/internal/chunk_dss.h
View file

@ -1,14 +1,28 @@
/******************************************************************************/
#ifdef JEMALLOC_H_TYPES
typedef enum {
dss_prec_disabled = 0,
dss_prec_primary = 1,
dss_prec_secondary = 2,
dss_prec_limit = 3
} dss_prec_t ;
#define DSS_PREC_DEFAULT dss_prec_secondary
#define DSS_DEFAULT "secondary"
#endif /* JEMALLOC_H_TYPES */
/******************************************************************************/
#ifdef JEMALLOC_H_STRUCTS
extern const char *dss_prec_names[];
#endif /* JEMALLOC_H_STRUCTS */
/******************************************************************************/
#ifdef JEMALLOC_H_EXTERNS
dss_prec_t chunk_dss_prec_get(void);
bool chunk_dss_prec_set(dss_prec_t dss_prec);
void *chunk_alloc_dss(size_t size, size_t alignment, bool *zero);
bool chunk_in_dss(void *chunk);
bool chunk_dss_boot(void);