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

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Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
#ifndef JEMALLOC_INTERNAL_TSD_STRUCTS_H
#define JEMALLOC_INTERNAL_TSD_STRUCTS_H
Header refactoring: break out ql.h dependencies
2017-04-11 08:11:33 +08:00
#include "jemalloc/internal/ql.h"
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
#if (!defined(JEMALLOC_MALLOC_THREAD_CLEANUP) && !defined(JEMALLOC_TLS) && \
!defined(_WIN32))
struct tsd_init_block_s {
ql_elm(tsd_init_block_t) link;
pthread_t thread;
void *data;
};
struct tsd_init_head_s {
ql_head(tsd_init_block_t) blocks;
malloc_mutex_t lock;
};
#endif
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
/*
* Thread-Specific-Data layout
* --- data accessed on tcache fast path: state, rtree_ctx, stats, prof ---
* s: state
* e: tcache_enabled
* m: thread_allocated (config_stats)
* f: thread_deallocated (config_stats)
* p: prof_tdata (config_prof)
* c: rtree_ctx (rtree cache accessed on deallocation)
* t: tcache
* --- data not accessed on tcache fast path: arena related fields ---
* d: arenas_tdata_bypass
Move reentrancy_level to the beginning of TSD.
2017-04-08 05:20:57 +08:00
* r: reentrancy_level
* x: narenas_tdata
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
* i: iarena
* a: arena
* o: arenas_tdata
* Loading TSD data is on the critical path of basically all malloc operations.
* In particular, tcache and rtree_ctx rely on hot CPU cache to be effective.
* Use a compact layout to reduce cache footprint.
* +--- 64-bit and 64B cacheline; 1B each letter; First byte on the left. ---+
* |---------------------------- 1st cacheline ----------------------------|
Move reentrancy_level to the beginning of TSD.
2017-04-08 05:20:57 +08:00
* | sedrxxxx mmmmmmmm ffffffff pppppppp [c * 32 ........ ........ .......] |
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
* |---------------------------- 2nd cacheline ----------------------------|
* | [c * 64 ........ ........ ........ ........ ........ ........ .......] |
* |---------------------------- 3nd cacheline ----------------------------|
* | [c * 32 ........ ........ .......] iiiiiiii aaaaaaaa oooooooo [t...... |
* +-------------------------------------------------------------------------+
* Note: the entire tcache is embedded into TSD and spans multiple cachelines.
*
* The last 3 members (i, a and o) before tcache isn't really needed on tcache
* fast path. However we have a number of unused tcache bins and witnesses
* (never touched unless config_debug) at the end of tcache, so we place them
* there to avoid breaking the cachelines and possibly paging in an extra page.
*/
Replace tabs following #define with spaces. This resolves #564.
2017-01-20 13:41:41 +08:00
#define MALLOC_TSD \
Add init function support to tsd members. This will facilitate embedding tcache into tsd, which will require proper initialization cannot be done via the static initializer. Make tsd->rtree_ctx to be initialized via rtree_ctx_data_init().
2017-03-30 04:18:02 +08:00
/* O(name, type, [gs]et, init, cleanup) */ \
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
O(tcache_enabled, bool, yes, yes, no) \
O(arenas_tdata_bypass, bool, no, no, no) \
Switch to fine-grained reentrancy support. Previously we had a general detection and support of reentrancy, at the cost of having branches and inc / dec operations on fast paths. To avoid taxing fast paths, we move the reentrancy operations onto tsd slow state, and only modify reentrancy level around external calls (that might trigger reentrancy).
2017-04-13 07:16:27 +08:00
O(reentrancy_level, int8_t, yes, no, no) \
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
O(narenas_tdata, uint32_t, yes, no, no) \
Add init function support to tsd members. This will facilitate embedding tcache into tsd, which will require proper initialization cannot be done via the static initializer. Make tsd->rtree_ctx to be initialized via rtree_ctx_data_init().
2017-03-30 04:18:02 +08:00
O(thread_allocated, uint64_t, yes, no, no) \
O(thread_deallocated, uint64_t, yes, no, no) \
O(prof_tdata, prof_tdata_t *, yes, no, yes) \
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
O(rtree_ctx, rtree_ctx_t, no, yes, no) \
Add init function support to tsd members. This will facilitate embedding tcache into tsd, which will require proper initialization cannot be done via the static initializer. Make tsd->rtree_ctx to be initialized via rtree_ctx_data_init().
2017-03-30 04:18:02 +08:00
O(iarena, arena_t *, yes, no, yes) \
O(arena, arena_t *, yes, no, yes) \
O(arenas_tdata, arena_tdata_t *,yes, no, yes) \
Bundle 3 branches on fast path into tsd_state. Added tsd_state_nominal_slow, which on fast path malloc() incorporates tcache_enabled check, and on fast path free() bundles both malloc_slow and tcache_enabled branches.
2017-04-12 14:13:45 +08:00
O(tcache, tcache_t, no, no, yes) \
Add init function support to tsd members. This will facilitate embedding tcache into tsd, which will require proper initialization cannot be done via the static initializer. Make tsd->rtree_ctx to be initialized via rtree_ctx_data_init().
2017-03-30 04:18:02 +08:00
O(witnesses, witness_list_t, no, no, yes) \
Split rtree_elm_t into rtree_{node,leaf}_elm_t. This allows leaf elements to differ in size from internal node elements. In principle it would be more correct to use a different type for each level of the tree, but due to implementation details related to atomic operations, we use casts anyway, thus counteracting the value of additional type correctness. Furthermore, such a scheme would require function code generation (via cpp macros), as well as either unwieldy type names for leaves or type aliases, e.g. typedef struct rtree_elm_d2_s rtree_leaf_elm_t; This alternate strategy would be more correct, and with less code duplication, but probably not worth the complexity.
2017-03-17 00:46:42 +08:00
O(rtree_leaf_elm_witnesses, rtree_leaf_elm_witness_tsd_t, \
Add init function support to tsd members. This will facilitate embedding tcache into tsd, which will require proper initialization cannot be done via the static initializer. Make tsd->rtree_ctx to be initialized via rtree_ctx_data_init().
2017-03-30 04:18:02 +08:00
no, no, no) \
Move reentrancy_level to the beginning of TSD.
2017-04-08 05:20:57 +08:00
O(witness_fork, bool, yes, no, no)
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
Replace tabs following #define with spaces. This resolves #564.
2017-01-20 13:41:41 +08:00
#define TSD_INITIALIZER { \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
tsd_state_uninitialized, \
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
TCACHE_ENABLED_ZERO_INITIALIZER, \
false, \
0, \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
0, \
0, \
Move reentrancy_level to the beginning of TSD.
2017-04-08 05:20:57 +08:00
0, \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
NULL, \
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
RTREE_CTX_ZERO_INITIALIZER, \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
NULL, \
NULL, \
NULL, \
Optimizing TSD and thread cache layout. 1) Re-organize TSD so that frequently accessed fields are closer to the beginning and more compact. Assuming 64-bit, the first 2.5 cachelines now contains everything needed on tcache fast path, expect the tcache struct itself. 2) Re-organize tcache and tbins. Take lg_fill_div out of tbin, and reduce tbin to 24 bytes (down from 32). Split tbins into tbins_small and tbins_large, and place tbins_small close to the beginning.
2017-04-07 03:35:22 +08:00
TCACHE_ZERO_INITIALIZER, \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
ql_head_initializer(witnesses), \
RTREE_ELM_WITNESS_TSD_INITIALIZER, \
Move reentrancy_level to the beginning of TSD.
2017-04-08 05:20:57 +08:00
false \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
}
struct tsd_s {
tsd_state_t state;
Add init function support to tsd members. This will facilitate embedding tcache into tsd, which will require proper initialization cannot be done via the static initializer. Make tsd->rtree_ctx to be initialized via rtree_ctx_data_init().
2017-03-30 04:18:02 +08:00
#define O(n, t, gs, i, c) \
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
t n;
MALLOC_TSD
#undef O
};
/*
* Wrapper around tsd_t that makes it possible to avoid implicit conversion
* between tsd_t and tsdn_t, where tsdn_t is "nullable" and has to be
* explicitly converted to tsd_t, which is non-nullable.
*/
struct tsdn_s {
tsd_t tsd;
};
static const tsd_t tsd_initializer = TSD_INITIALIZER;
Integrate auto tcache into TSD. The embedded tcache is initialized upon tsd initialization. The avail arrays for the tbins will be allocated / deallocated accordingly during init / cleanup. With this change, the pointer to the auto tcache will always be available, as long as we have access to the TSD. tcache_available() (called in tcache_get()) is provided to check if we should use tcache.
2017-03-28 12:50:38 +08:00
UNUSED static const void *malloc_tsd_no_cleanup = (void *)0;
Break up headers into constituent parts This is part of a broader change to make header files better represent the dependencies between one another (see https://github.com/jemalloc/jemalloc/issues/533). It breaks up component headers into smaller parts that can be made to have a simpler dependency graph. For the autogenerated headers (smoothstep.h and size_classes.h), no splitting was necessary, so I didn't add support to emit multiple headers.
2017-01-11 10:06:31 +08:00
malloc_tsd_types(, tsd_t)
#endif /* JEMALLOC_INTERNAL_TSD_STRUCTS_H */
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