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Diffstat (limited to 'deps/jemalloc/include/jemalloc/internal/edata.h')
| -rw-r--r-- | deps/jemalloc/include/jemalloc/internal/edata.h | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/deps/jemalloc/include/jemalloc/internal/edata.h b/deps/jemalloc/include/jemalloc/internal/edata.h new file mode 100644 index 0000000..af039ea --- /dev/null +++ b/deps/jemalloc/include/jemalloc/internal/edata.h @@ -0,0 +1,698 @@ +#ifndef JEMALLOC_INTERNAL_EDATA_H +#define JEMALLOC_INTERNAL_EDATA_H + +#include "jemalloc/internal/atomic.h" +#include "jemalloc/internal/bin_info.h" +#include "jemalloc/internal/bit_util.h" +#include "jemalloc/internal/hpdata.h" +#include "jemalloc/internal/nstime.h" +#include "jemalloc/internal/ph.h" +#include "jemalloc/internal/ql.h" +#include "jemalloc/internal/sc.h" +#include "jemalloc/internal/slab_data.h" +#include "jemalloc/internal/sz.h" +#include "jemalloc/internal/typed_list.h" + +/* + * sizeof(edata_t) is 128 bytes on 64-bit architectures. Ensure the alignment + * to free up the low bits in the rtree leaf. + */ +#define EDATA_ALIGNMENT 128 + +enum extent_state_e { + extent_state_active = 0, + extent_state_dirty = 1, + extent_state_muzzy = 2, + extent_state_retained = 3, + extent_state_transition = 4, /* States below are intermediate. */ + extent_state_merging = 5, + extent_state_max = 5 /* Sanity checking only. */ +}; +typedef enum extent_state_e extent_state_t; + +enum extent_head_state_e { + EXTENT_NOT_HEAD, + EXTENT_IS_HEAD /* See comments in ehooks_default_merge_impl(). */ +}; +typedef enum extent_head_state_e extent_head_state_t; + +/* + * Which implementation of the page allocator interface, (PAI, defined in + * pai.h) owns the given extent? + */ +enum extent_pai_e { + EXTENT_PAI_PAC = 0, + EXTENT_PAI_HPA = 1 +}; +typedef enum extent_pai_e extent_pai_t; + +struct e_prof_info_s { + /* Time when this was allocated. */ + nstime_t e_prof_alloc_time; + /* Allocation request size. */ + size_t e_prof_alloc_size; + /* Points to a prof_tctx_t. */ + atomic_p_t e_prof_tctx; + /* + * Points to a prof_recent_t for the allocation; NULL + * means the recent allocation record no longer exists. + * Protected by prof_recent_alloc_mtx. + */ + atomic_p_t e_prof_recent_alloc; +}; +typedef struct e_prof_info_s e_prof_info_t; + +/* + * The information about a particular edata that lives in an emap. Space is + * more precious there (the information, plus the edata pointer, has to live in + * a 64-bit word if we want to enable a packed representation. + * + * There are two things that are special about the information here: + * - It's quicker to access. You have one fewer pointer hop, since finding the + * edata_t associated with an item always requires accessing the rtree leaf in + * which this data is stored. + * - It can be read unsynchronized, and without worrying about lifetime issues. + */ +typedef struct edata_map_info_s edata_map_info_t; +struct edata_map_info_s { + bool slab; + szind_t szind; +}; + +typedef struct edata_cmp_summary_s edata_cmp_summary_t; +struct edata_cmp_summary_s { + uint64_t sn; + uintptr_t addr; +}; + +/* Extent (span of pages). Use accessor functions for e_* fields. */ +typedef struct edata_s edata_t; +ph_structs(edata_avail, edata_t); +ph_structs(edata_heap, edata_t); +struct edata_s { + /* + * Bitfield containing several fields: + * + * a: arena_ind + * b: slab + * c: committed + * p: pai + * z: zeroed + * g: guarded + * t: state + * i: szind + * f: nfree + * s: bin_shard + * + * 00000000 ... 0000ssss ssffffff ffffiiii iiiitttg zpcbaaaa aaaaaaaa + * + * arena_ind: Arena from which this extent came, or all 1 bits if + * unassociated. + * + * slab: The slab flag indicates whether the extent is used for a slab + * of small regions. This helps differentiate small size classes, + * and it indicates whether interior pointers can be looked up via + * iealloc(). + * + * committed: The committed flag indicates whether physical memory is + * committed to the extent, whether explicitly or implicitly + * as on a system that overcommits and satisfies physical + * memory needs on demand via soft page faults. + * + * pai: The pai flag is an extent_pai_t. + * + * zeroed: The zeroed flag is used by extent recycling code to track + * whether memory is zero-filled. + * + * guarded: The guarded flag is use by the sanitizer to track whether + * the extent has page guards around it. + * + * state: The state flag is an extent_state_t. + * + * szind: The szind flag indicates usable size class index for + * allocations residing in this extent, regardless of whether the + * extent is a slab. Extent size and usable size often differ + * even for non-slabs, either due to sz_large_pad or promotion of + * sampled small regions. + * + * nfree: Number of free regions in slab. + * + * bin_shard: the shard of the bin from which this extent came. + */ + uint64_t e_bits; +#define MASK(CURRENT_FIELD_WIDTH, CURRENT_FIELD_SHIFT) ((((((uint64_t)0x1U) << (CURRENT_FIELD_WIDTH)) - 1)) << (CURRENT_FIELD_SHIFT)) + +#define EDATA_BITS_ARENA_WIDTH MALLOCX_ARENA_BITS +#define EDATA_BITS_ARENA_SHIFT 0 +#define EDATA_BITS_ARENA_MASK MASK(EDATA_BITS_ARENA_WIDTH, EDATA_BITS_ARENA_SHIFT) + +#define EDATA_BITS_SLAB_WIDTH 1 +#define EDATA_BITS_SLAB_SHIFT (EDATA_BITS_ARENA_WIDTH + EDATA_BITS_ARENA_SHIFT) +#define EDATA_BITS_SLAB_MASK MASK(EDATA_BITS_SLAB_WIDTH, EDATA_BITS_SLAB_SHIFT) + +#define EDATA_BITS_COMMITTED_WIDTH 1 +#define EDATA_BITS_COMMITTED_SHIFT (EDATA_BITS_SLAB_WIDTH + EDATA_BITS_SLAB_SHIFT) +#define EDATA_BITS_COMMITTED_MASK MASK(EDATA_BITS_COMMITTED_WIDTH, EDATA_BITS_COMMITTED_SHIFT) + +#define EDATA_BITS_PAI_WIDTH 1 +#define EDATA_BITS_PAI_SHIFT (EDATA_BITS_COMMITTED_WIDTH + EDATA_BITS_COMMITTED_SHIFT) +#define EDATA_BITS_PAI_MASK MASK(EDATA_BITS_PAI_WIDTH, EDATA_BITS_PAI_SHIFT) + +#define EDATA_BITS_ZEROED_WIDTH 1 +#define EDATA_BITS_ZEROED_SHIFT (EDATA_BITS_PAI_WIDTH + EDATA_BITS_PAI_SHIFT) +#define EDATA_BITS_ZEROED_MASK MASK(EDATA_BITS_ZEROED_WIDTH, EDATA_BITS_ZEROED_SHIFT) + +#define EDATA_BITS_GUARDED_WIDTH 1 +#define EDATA_BITS_GUARDED_SHIFT (EDATA_BITS_ZEROED_WIDTH + EDATA_BITS_ZEROED_SHIFT) +#define EDATA_BITS_GUARDED_MASK MASK(EDATA_BITS_GUARDED_WIDTH, EDATA_BITS_GUARDED_SHIFT) + +#define EDATA_BITS_STATE_WIDTH 3 +#define EDATA_BITS_STATE_SHIFT (EDATA_BITS_GUARDED_WIDTH + EDATA_BITS_GUARDED_SHIFT) +#define EDATA_BITS_STATE_MASK MASK(EDATA_BITS_STATE_WIDTH, EDATA_BITS_STATE_SHIFT) + +#define EDATA_BITS_SZIND_WIDTH LG_CEIL(SC_NSIZES) +#define EDATA_BITS_SZIND_SHIFT (EDATA_BITS_STATE_WIDTH + EDATA_BITS_STATE_SHIFT) +#define EDATA_BITS_SZIND_MASK MASK(EDATA_BITS_SZIND_WIDTH, EDATA_BITS_SZIND_SHIFT) + +#define EDATA_BITS_NFREE_WIDTH (SC_LG_SLAB_MAXREGS + 1) +#define EDATA_BITS_NFREE_SHIFT (EDATA_BITS_SZIND_WIDTH + EDATA_BITS_SZIND_SHIFT) +#define EDATA_BITS_NFREE_MASK MASK(EDATA_BITS_NFREE_WIDTH, EDATA_BITS_NFREE_SHIFT) + +#define EDATA_BITS_BINSHARD_WIDTH 6 +#define EDATA_BITS_BINSHARD_SHIFT (EDATA_BITS_NFREE_WIDTH + EDATA_BITS_NFREE_SHIFT) +#define EDATA_BITS_BINSHARD_MASK MASK(EDATA_BITS_BINSHARD_WIDTH, EDATA_BITS_BINSHARD_SHIFT) + +#define EDATA_BITS_IS_HEAD_WIDTH 1 +#define EDATA_BITS_IS_HEAD_SHIFT (EDATA_BITS_BINSHARD_WIDTH + EDATA_BITS_BINSHARD_SHIFT) +#define EDATA_BITS_IS_HEAD_MASK MASK(EDATA_BITS_IS_HEAD_WIDTH, EDATA_BITS_IS_HEAD_SHIFT) + + /* Pointer to the extent that this structure is responsible for. */ + void *e_addr; + + union { + /* + * Extent size and serial number associated with the extent + * structure (different than the serial number for the extent at + * e_addr). + * + * ssssssss [...] ssssssss ssssnnnn nnnnnnnn + */ + size_t e_size_esn; + #define EDATA_SIZE_MASK ((size_t)~(PAGE-1)) + #define EDATA_ESN_MASK ((size_t)PAGE-1) + /* Base extent size, which may not be a multiple of PAGE. */ + size_t e_bsize; + }; + + /* + * If this edata is a user allocation from an HPA, it comes out of some + * pageslab (we don't yet support huegpage allocations that don't fit + * into pageslabs). This tracks it. + */ + hpdata_t *e_ps; + + /* + * Serial number. These are not necessarily unique; splitting an extent + * results in two extents with the same serial number. + */ + uint64_t e_sn; + + union { + /* + * List linkage used when the edata_t is active; either in + * arena's large allocations or bin_t's slabs_full. + */ + ql_elm(edata_t) ql_link_active; + /* + * Pairing heap linkage. Used whenever the extent is inactive + * (in the page allocators), or when it is active and in + * slabs_nonfull, or when the edata_t is unassociated with an + * extent and sitting in an edata_cache. + */ + union { + edata_heap_link_t heap_link; + edata_avail_link_t avail_link; + }; + }; + + union { + /* + * List linkage used when the extent is inactive: + * - Stashed dirty extents + * - Ecache LRU functionality. + */ + ql_elm(edata_t) ql_link_inactive; + /* Small region slab metadata. */ + slab_data_t e_slab_data; + + /* Profiling data, used for large objects. */ + e_prof_info_t e_prof_info; + }; +}; + +TYPED_LIST(edata_list_active, edata_t, ql_link_active) +TYPED_LIST(edata_list_inactive, edata_t, ql_link_inactive) + +static inline unsigned +edata_arena_ind_get(const edata_t *edata) { + unsigned arena_ind = (unsigned)((edata->e_bits & + EDATA_BITS_ARENA_MASK) >> EDATA_BITS_ARENA_SHIFT); + assert(arena_ind < MALLOCX_ARENA_LIMIT); + + return arena_ind; +} + +static inline szind_t +edata_szind_get_maybe_invalid(const edata_t *edata) { + szind_t szind = (szind_t)((edata->e_bits & EDATA_BITS_SZIND_MASK) >> + EDATA_BITS_SZIND_SHIFT); + assert(szind <= SC_NSIZES); + return szind; +} + +static inline szind_t +edata_szind_get(const edata_t *edata) { + szind_t szind = edata_szind_get_maybe_invalid(edata); + assert(szind < SC_NSIZES); /* Never call when "invalid". */ + return szind; +} + +static inline size_t +edata_usize_get(const edata_t *edata) { + return sz_index2size(edata_szind_get(edata)); +} + +static inline unsigned +edata_binshard_get(const edata_t *edata) { + unsigned binshard = (unsigned)((edata->e_bits & + EDATA_BITS_BINSHARD_MASK) >> EDATA_BITS_BINSHARD_SHIFT); + assert(binshard < bin_infos[edata_szind_get(edata)].n_shards); + return binshard; +} + +static inline uint64_t +edata_sn_get(const edata_t *edata) { + return edata->e_sn; +} + +static inline extent_state_t +edata_state_get(const edata_t *edata) { + return (extent_state_t)((edata->e_bits & EDATA_BITS_STATE_MASK) >> + EDATA_BITS_STATE_SHIFT); +} + +static inline bool +edata_guarded_get(const edata_t *edata) { + return (bool)((edata->e_bits & EDATA_BITS_GUARDED_MASK) >> + EDATA_BITS_GUARDED_SHIFT); +} + +static inline bool +edata_zeroed_get(const edata_t *edata) { + return (bool)((edata->e_bits & EDATA_BITS_ZEROED_MASK) >> + EDATA_BITS_ZEROED_SHIFT); +} + +static inline bool +edata_committed_get(const edata_t *edata) { + return (bool)((edata->e_bits & EDATA_BITS_COMMITTED_MASK) >> + EDATA_BITS_COMMITTED_SHIFT); +} + +static inline extent_pai_t +edata_pai_get(const edata_t *edata) { + return (extent_pai_t)((edata->e_bits & EDATA_BITS_PAI_MASK) >> + EDATA_BITS_PAI_SHIFT); +} + +static inline bool +edata_slab_get(const edata_t *edata) { + return (bool)((edata->e_bits & EDATA_BITS_SLAB_MASK) >> + EDATA_BITS_SLAB_SHIFT); +} + +static inline unsigned +edata_nfree_get(const edata_t *edata) { + assert(edata_slab_get(edata)); + return (unsigned)((edata->e_bits & EDATA_BITS_NFREE_MASK) >> + EDATA_BITS_NFREE_SHIFT); +} + +static inline void * +edata_base_get(const edata_t *edata) { + assert(edata->e_addr == PAGE_ADDR2BASE(edata->e_addr) || + !edata_slab_get(edata)); + return PAGE_ADDR2BASE(edata->e_addr); +} + +static inline void * +edata_addr_get(const edata_t *edata) { + assert(edata->e_addr == PAGE_ADDR2BASE(edata->e_addr) || + !edata_slab_get(edata)); + return edata->e_addr; +} + +static inline size_t +edata_size_get(const edata_t *edata) { + return (edata->e_size_esn & EDATA_SIZE_MASK); +} + +static inline size_t +edata_esn_get(const edata_t *edata) { + return (edata->e_size_esn & EDATA_ESN_MASK); +} + +static inline size_t +edata_bsize_get(const edata_t *edata) { + return edata->e_bsize; +} + +static inline hpdata_t * +edata_ps_get(const edata_t *edata) { + assert(edata_pai_get(edata) == EXTENT_PAI_HPA); + return edata->e_ps; +} + +static inline void * +edata_before_get(const edata_t *edata) { + return (void *)((uintptr_t)edata_base_get(edata) - PAGE); +} + +static inline void * +edata_last_get(const edata_t *edata) { + return (void *)((uintptr_t)edata_base_get(edata) + + edata_size_get(edata) - PAGE); +} + +static inline void * +edata_past_get(const edata_t *edata) { + return (void *)((uintptr_t)edata_base_get(edata) + + edata_size_get(edata)); +} + +static inline slab_data_t * +edata_slab_data_get(edata_t *edata) { + assert(edata_slab_get(edata)); + return &edata->e_slab_data; +} + +static inline const slab_data_t * +edata_slab_data_get_const(const edata_t *edata) { + assert(edata_slab_get(edata)); + return &edata->e_slab_data; +} + +static inline prof_tctx_t * +edata_prof_tctx_get(const edata_t *edata) { + return (prof_tctx_t *)atomic_load_p(&edata->e_prof_info.e_prof_tctx, + ATOMIC_ACQUIRE); +} + +static inline const nstime_t * +edata_prof_alloc_time_get(const edata_t *edata) { + return &edata->e_prof_info.e_prof_alloc_time; +} + +static inline size_t +edata_prof_alloc_size_get(const edata_t *edata) { + return edata->e_prof_info.e_prof_alloc_size; +} + +static inline prof_recent_t * +edata_prof_recent_alloc_get_dont_call_directly(const edata_t *edata) { + return (prof_recent_t *)atomic_load_p( + &edata->e_prof_info.e_prof_recent_alloc, ATOMIC_RELAXED); +} + +static inline void +edata_arena_ind_set(edata_t *edata, unsigned arena_ind) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_ARENA_MASK) | + ((uint64_t)arena_ind << EDATA_BITS_ARENA_SHIFT); +} + +static inline void +edata_binshard_set(edata_t *edata, unsigned binshard) { + /* The assertion assumes szind is set already. */ + assert(binshard < bin_infos[edata_szind_get(edata)].n_shards); + edata->e_bits = (edata->e_bits & ~EDATA_BITS_BINSHARD_MASK) | + ((uint64_t)binshard << EDATA_BITS_BINSHARD_SHIFT); +} + +static inline void +edata_addr_set(edata_t *edata, void *addr) { + edata->e_addr = addr; +} + +static inline void +edata_size_set(edata_t *edata, size_t size) { + assert((size & ~EDATA_SIZE_MASK) == 0); + edata->e_size_esn = size | (edata->e_size_esn & ~EDATA_SIZE_MASK); +} + +static inline void +edata_esn_set(edata_t *edata, size_t esn) { + edata->e_size_esn = (edata->e_size_esn & ~EDATA_ESN_MASK) | (esn & + EDATA_ESN_MASK); +} + +static inline void +edata_bsize_set(edata_t *edata, size_t bsize) { + edata->e_bsize = bsize; +} + +static inline void +edata_ps_set(edata_t *edata, hpdata_t *ps) { + assert(edata_pai_get(edata) == EXTENT_PAI_HPA); + edata->e_ps = ps; +} + +static inline void +edata_szind_set(edata_t *edata, szind_t szind) { + assert(szind <= SC_NSIZES); /* SC_NSIZES means "invalid". */ + edata->e_bits = (edata->e_bits & ~EDATA_BITS_SZIND_MASK) | + ((uint64_t)szind << EDATA_BITS_SZIND_SHIFT); +} + +static inline void +edata_nfree_set(edata_t *edata, unsigned nfree) { + assert(edata_slab_get(edata)); + edata->e_bits = (edata->e_bits & ~EDATA_BITS_NFREE_MASK) | + ((uint64_t)nfree << EDATA_BITS_NFREE_SHIFT); +} + +static inline void +edata_nfree_binshard_set(edata_t *edata, unsigned nfree, unsigned binshard) { + /* The assertion assumes szind is set already. */ + assert(binshard < bin_infos[edata_szind_get(edata)].n_shards); + edata->e_bits = (edata->e_bits & + (~EDATA_BITS_NFREE_MASK & ~EDATA_BITS_BINSHARD_MASK)) | + ((uint64_t)binshard << EDATA_BITS_BINSHARD_SHIFT) | + ((uint64_t)nfree << EDATA_BITS_NFREE_SHIFT); +} + +static inline void +edata_nfree_inc(edata_t *edata) { + assert(edata_slab_get(edata)); + edata->e_bits += ((uint64_t)1U << EDATA_BITS_NFREE_SHIFT); +} + +static inline void +edata_nfree_dec(edata_t *edata) { + assert(edata_slab_get(edata)); + edata->e_bits -= ((uint64_t)1U << EDATA_BITS_NFREE_SHIFT); +} + +static inline void +edata_nfree_sub(edata_t *edata, uint64_t n) { + assert(edata_slab_get(edata)); + edata->e_bits -= (n << EDATA_BITS_NFREE_SHIFT); +} + +static inline void +edata_sn_set(edata_t *edata, uint64_t sn) { + edata->e_sn = sn; +} + +static inline void +edata_state_set(edata_t *edata, extent_state_t state) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_STATE_MASK) | + ((uint64_t)state << EDATA_BITS_STATE_SHIFT); +} + +static inline void +edata_guarded_set(edata_t *edata, bool guarded) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_GUARDED_MASK) | + ((uint64_t)guarded << EDATA_BITS_GUARDED_SHIFT); +} + +static inline void +edata_zeroed_set(edata_t *edata, bool zeroed) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_ZEROED_MASK) | + ((uint64_t)zeroed << EDATA_BITS_ZEROED_SHIFT); +} + +static inline void +edata_committed_set(edata_t *edata, bool committed) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_COMMITTED_MASK) | + ((uint64_t)committed << EDATA_BITS_COMMITTED_SHIFT); +} + +static inline void +edata_pai_set(edata_t *edata, extent_pai_t pai) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_PAI_MASK) | + ((uint64_t)pai << EDATA_BITS_PAI_SHIFT); +} + +static inline void +edata_slab_set(edata_t *edata, bool slab) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_SLAB_MASK) | + ((uint64_t)slab << EDATA_BITS_SLAB_SHIFT); +} + +static inline void +edata_prof_tctx_set(edata_t *edata, prof_tctx_t *tctx) { + atomic_store_p(&edata->e_prof_info.e_prof_tctx, tctx, ATOMIC_RELEASE); +} + +static inline void +edata_prof_alloc_time_set(edata_t *edata, nstime_t *t) { + nstime_copy(&edata->e_prof_info.e_prof_alloc_time, t); +} + +static inline void +edata_prof_alloc_size_set(edata_t *edata, size_t size) { + edata->e_prof_info.e_prof_alloc_size = size; +} + +static inline void +edata_prof_recent_alloc_set_dont_call_directly(edata_t *edata, + prof_recent_t *recent_alloc) { + atomic_store_p(&edata->e_prof_info.e_prof_recent_alloc, recent_alloc, + ATOMIC_RELAXED); +} + +static inline bool +edata_is_head_get(edata_t *edata) { + return (bool)((edata->e_bits & EDATA_BITS_IS_HEAD_MASK) >> + EDATA_BITS_IS_HEAD_SHIFT); +} + +static inline void +edata_is_head_set(edata_t *edata, bool is_head) { + edata->e_bits = (edata->e_bits & ~EDATA_BITS_IS_HEAD_MASK) | + ((uint64_t)is_head << EDATA_BITS_IS_HEAD_SHIFT); +} + +static inline bool +edata_state_in_transition(extent_state_t state) { + return state >= extent_state_transition; +} + +/* + * Because this function is implemented as a sequence of bitfield modifications, + * even though each individual bit is properly initialized, we technically read + * uninitialized data within it. This is mostly fine, since most callers get + * their edatas from zeroing sources, but callers who make stack edata_ts need + * to manually zero them. + */ +static inline void +edata_init(edata_t *edata, unsigned arena_ind, void *addr, size_t size, + bool slab, szind_t szind, uint64_t sn, extent_state_t state, bool zeroed, + bool committed, extent_pai_t pai, extent_head_state_t is_head) { + assert(addr == PAGE_ADDR2BASE(addr) || !slab); + + edata_arena_ind_set(edata, arena_ind); + edata_addr_set(edata, addr); + edata_size_set(edata, size); + edata_slab_set(edata, slab); + edata_szind_set(edata, szind); + edata_sn_set(edata, sn); + edata_state_set(edata, state); + edata_guarded_set(edata, false); + edata_zeroed_set(edata, zeroed); + edata_committed_set(edata, committed); + edata_pai_set(edata, pai); + edata_is_head_set(edata, is_head == EXTENT_IS_HEAD); + if (config_prof) { + edata_prof_tctx_set(edata, NULL); + } +} + +static inline void +edata_binit(edata_t *edata, void *addr, size_t bsize, uint64_t sn) { + edata_arena_ind_set(edata, (1U << MALLOCX_ARENA_BITS) - 1); + edata_addr_set(edata, addr); + edata_bsize_set(edata, bsize); + edata_slab_set(edata, false); + edata_szind_set(edata, SC_NSIZES); + edata_sn_set(edata, sn); + edata_state_set(edata, extent_state_active); + edata_guarded_set(edata, false); + edata_zeroed_set(edata, true); + edata_committed_set(edata, true); + /* + * This isn't strictly true, but base allocated extents never get + * deallocated and can't be looked up in the emap, but no sense in + * wasting a state bit to encode this fact. + */ + edata_pai_set(edata, EXTENT_PAI_PAC); +} + +static inline int +edata_esn_comp(const edata_t *a, const edata_t *b) { + size_t a_esn = edata_esn_get(a); + size_t b_esn = edata_esn_get(b); + + return (a_esn > b_esn) - (a_esn < b_esn); +} + +static inline int +edata_ead_comp(const edata_t *a, const edata_t *b) { + uintptr_t a_eaddr = (uintptr_t)a; + uintptr_t b_eaddr = (uintptr_t)b; + + return (a_eaddr > b_eaddr) - (a_eaddr < b_eaddr); +} + +static inline edata_cmp_summary_t +edata_cmp_summary_get(const edata_t *edata) { + return (edata_cmp_summary_t){edata_sn_get(edata), + (uintptr_t)edata_addr_get(edata)}; +} + +static inline int +edata_cmp_summary_comp(edata_cmp_summary_t a, edata_cmp_summary_t b) { + int ret; + ret = (a.sn > b.sn) - (a.sn < b.sn); + if (ret != 0) { + return ret; + } + ret = (a.addr > b.addr) - (a.addr < b.addr); + return ret; +} + +static inline int +edata_snad_comp(const edata_t *a, const edata_t *b) { + edata_cmp_summary_t a_cmp = edata_cmp_summary_get(a); + edata_cmp_summary_t b_cmp = edata_cmp_summary_get(b); + + return edata_cmp_summary_comp(a_cmp, b_cmp); +} + +static inline int +edata_esnead_comp(const edata_t *a, const edata_t *b) { + int ret; + + ret = edata_esn_comp(a, b); + if (ret != 0) { + return ret; + } + + ret = edata_ead_comp(a, b); + return ret; +} + +ph_proto(, edata_avail, edata_t) +ph_proto(, edata_heap, edata_t) + +#endif /* JEMALLOC_INTERNAL_EDATA_H */ |