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server-skynet-source-3rd-je.../include/jemalloc/internal/ecache.h

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Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
#ifndef JEMALLOC_INTERNAL_ECACHE_H
#define JEMALLOC_INTERNAL_ECACHE_H
#include "jemalloc/internal/eset.h"
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
#include "jemalloc/internal/guard.h"
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
#include "jemalloc/internal/mutex.h"
typedef struct ecache_s ecache_t;
struct ecache_s {
malloc_mutex_t mtx;
eset_t eset;
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
eset_t guarded_eset;
Put extent_state_t into ecache as well as eset.
2019-12-13 08:44:49 +08:00
/* All stored extents must be in the same state. */
extent_state_t state;
Ecache: Should know its arena_ind. What we call an arena_ind is really the index associated with some particular set of ehooks; the arena is just the user-visible portion of that. Making this explicit, and reframing checks in terms of that, makes the code simpler and cleaner, and helps us avoid passing the arena itself all throughout extent code. This lets us put back an arena-specific assert.
2019-12-14 03:33:03 +08:00
/* The index of the ehooks the ecache is associated with. */
unsigned ind;
Move delay_coalesce from the eset to the ecache.
2019-12-13 08:33:19 +08:00
/*
* If true, delay coalescing until eviction; otherwise coalesce during
* deallocation.
*/
bool delay_coalesce;
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
};
static inline size_t
ecache_npages_get(ecache_t *ecache) {
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
return eset_npages_get(&ecache->eset) +
eset_npages_get(&ecache->guarded_eset);
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
}
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
/* Get the number of extents in the given page size index. */
static inline size_t
ecache_nextents_get(ecache_t *ecache, pszind_t ind) {
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
return eset_nextents_get(&ecache->eset, ind) +
eset_nextents_get(&ecache->guarded_eset, ind);
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
}
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
/* Get the sum total bytes of the extents in the given page size index. */
static inline size_t
ecache_nbytes_get(ecache_t *ecache, pszind_t ind) {
Implement guard pages. Adding guarded extents, which are regular extents surrounded by guard pages (mprotected). To reduce syscalls, small guarded extents are cached as a separate eset in ecache, and decay through the dirty / muzzy / retained pipeline as usual.
2021-04-27 05:22:25 +08:00
return eset_nbytes_get(&ecache->eset, ind) +
eset_nbytes_get(&ecache->guarded_eset, ind);
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
}
Ecache: Should know its arena_ind. What we call an arena_ind is really the index associated with some particular set of ehooks; the arena is just the user-visible portion of that. Making this explicit, and reframing checks in terms of that, makes the code simpler and cleaner, and helps us avoid passing the arena itself all throughout extent code. This lets us put back an arena-specific assert.
2019-12-14 03:33:03 +08:00
static inline unsigned
ecache_ind_get(ecache_t *ecache) {
return ecache->ind;
}
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
bool ecache_init(tsdn_t *tsdn, ecache_t *ecache, extent_state_t state,
Ecache: Should know its arena_ind. What we call an arena_ind is really the index associated with some particular set of ehooks; the arena is just the user-visible portion of that. Making this explicit, and reframing checks in terms of that, makes the code simpler and cleaner, and helps us avoid passing the arena itself all throughout extent code. This lets us put back an arena-specific assert.
2019-12-14 03:33:03 +08:00
unsigned ind, bool delay_coalesce);
Extent refactor: Introduce ecache module. This will eventually completely wrap the eset, and handle concurrency, allocation, and deallocation. For now, we only pull out the mutex from the eset.
2019-12-13 08:25:24 +08:00
void ecache_prefork(tsdn_t *tsdn, ecache_t *ecache);
void ecache_postfork_parent(tsdn_t *tsdn, ecache_t *ecache);
void ecache_postfork_child(tsdn_t *tsdn, ecache_t *ecache);
#endif /* JEMALLOC_INTERNAL_ECACHE_H */
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