1 #ifndef JEMALLOC_INTERNAL_TCACHE_INLINES_H
2 #define JEMALLOC_INTERNAL_TCACHE_INLINES_H
3
4 #include "jemalloc/internal/bin.h"
5 #include "jemalloc/internal/jemalloc_internal_types.h"
6 #include "jemalloc/internal/size_classes.h"
7 #include "jemalloc/internal/sz.h"
8 #include "jemalloc/internal/ticker.h"
9 #include "jemalloc/internal/util.h"
10
11 static inline bool
tcache_enabled_get(tsd_t * tsd)12 tcache_enabled_get(tsd_t *tsd) {
13 return tsd_tcache_enabled_get(tsd);
14 }
15
16 static inline void
tcache_enabled_set(tsd_t * tsd,bool enabled)17 tcache_enabled_set(tsd_t *tsd, bool enabled) {
18 bool was_enabled = tsd_tcache_enabled_get(tsd);
19
20 if (!was_enabled && enabled) {
21 tsd_tcache_data_init(tsd);
22 } else if (was_enabled && !enabled) {
23 tcache_cleanup(tsd);
24 }
25 /* Commit the state last. Above calls check current state. */
26 tsd_tcache_enabled_set(tsd, enabled);
27 tsd_slow_update(tsd);
28 }
29
30 JEMALLOC_ALWAYS_INLINE void
tcache_event(tsd_t * tsd,tcache_t * tcache)31 tcache_event(tsd_t *tsd, tcache_t *tcache) {
32 if (TCACHE_GC_INCR == 0) {
33 return;
34 }
35
36 if (unlikely(ticker_tick(&tcache->gc_ticker))) {
37 tcache_event_hard(tsd, tcache);
38 }
39 }
40
41 JEMALLOC_ALWAYS_INLINE void *
tcache_alloc_small(tsd_t * tsd,arena_t * arena,tcache_t * tcache,UNUSED size_t size,szind_t binind,bool zero,bool slow_path)42 tcache_alloc_small(tsd_t *tsd, arena_t *arena, tcache_t *tcache,
43 UNUSED size_t size, szind_t binind, bool zero, bool slow_path) {
44 void *ret;
45 cache_bin_t *bin;
46 bool tcache_success;
47 size_t usize JEMALLOC_CC_SILENCE_INIT(0);
48
49 assert(binind < NBINS);
50 bin = tcache_small_bin_get(tcache, binind);
51 ret = cache_bin_alloc_easy(bin, &tcache_success);
52 assert(tcache_success == (ret != NULL));
53 if (unlikely(!tcache_success)) {
54 bool tcache_hard_success;
55 arena = arena_choose(tsd, arena);
56 if (unlikely(arena == NULL)) {
57 return NULL;
58 }
59
60 ret = tcache_alloc_small_hard(tsd_tsdn(tsd), arena, tcache,
61 bin, binind, &tcache_hard_success);
62 if (tcache_hard_success == false) {
63 return NULL;
64 }
65 }
66
67 assert(ret);
68 /*
69 * Only compute usize if required. The checks in the following if
70 * statement are all static.
71 */
72 if (config_prof || (slow_path && config_fill) || unlikely(zero)) {
73 usize = sz_index2size(binind);
74 assert(tcache_salloc(tsd_tsdn(tsd), ret) == usize);
75 }
76
77 if (likely(!zero)) {
78 if (slow_path && config_fill) {
79 if (unlikely(opt_junk_alloc)) {
80 arena_alloc_junk_small(ret, &bin_infos[binind],
81 false);
82 } else if (unlikely(opt_zero)) {
83 memset(ret, 0, usize);
84 }
85 }
86 } else {
87 if (slow_path && config_fill && unlikely(opt_junk_alloc)) {
88 arena_alloc_junk_small(ret, &bin_infos[binind], true);
89 }
90 memset(ret, 0, usize);
91 }
92
93 #if defined(ANDROID_ENABLE_TCACHE_STATS)
94 if (config_stats) {
95 bin->tstats.nrequests++;
96 }
97 #endif
98 if (config_prof) {
99 tcache->prof_accumbytes += usize;
100 }
101 tcache_event(tsd, tcache);
102 return ret;
103 }
104
105 JEMALLOC_ALWAYS_INLINE void *
tcache_alloc_large(tsd_t * tsd,arena_t * arena,tcache_t * tcache,size_t size,szind_t binind,bool zero,bool slow_path)106 tcache_alloc_large(tsd_t *tsd, arena_t *arena, tcache_t *tcache, size_t size,
107 szind_t binind, bool zero, bool slow_path) {
108 void *ret;
109 cache_bin_t *bin;
110 bool tcache_success;
111
112 assert(binind >= NBINS &&binind < nhbins);
113 bin = tcache_large_bin_get(tcache, binind);
114 ret = cache_bin_alloc_easy(bin, &tcache_success);
115 assert(tcache_success == (ret != NULL));
116 if (unlikely(!tcache_success)) {
117 /*
118 * Only allocate one large object at a time, because it's quite
119 * expensive to create one and not use it.
120 */
121 arena = arena_choose(tsd, arena);
122 if (unlikely(arena == NULL)) {
123 return NULL;
124 }
125
126 ret = large_malloc(tsd_tsdn(tsd), arena, sz_s2u(size), zero);
127 if (ret == NULL) {
128 return NULL;
129 }
130 } else {
131 size_t usize JEMALLOC_CC_SILENCE_INIT(0);
132
133 /* Only compute usize on demand */
134 if (config_prof || (slow_path && config_fill) ||
135 unlikely(zero)) {
136 usize = sz_index2size(binind);
137 assert(usize <= tcache_maxclass);
138 }
139
140 if (likely(!zero)) {
141 if (slow_path && config_fill) {
142 if (unlikely(opt_junk_alloc)) {
143 memset(ret, JEMALLOC_ALLOC_JUNK,
144 usize);
145 } else if (unlikely(opt_zero)) {
146 memset(ret, 0, usize);
147 }
148 }
149 } else {
150 memset(ret, 0, usize);
151 }
152
153 #if defined(ANDROID_ENABLE_TCACHE_STATUS)
154 if (config_stats) {
155 bin->tstats.nrequests++;
156 }
157 #endif
158 if (config_prof) {
159 tcache->prof_accumbytes += usize;
160 }
161 }
162
163 tcache_event(tsd, tcache);
164 return ret;
165 }
166
167 JEMALLOC_ALWAYS_INLINE void
tcache_dalloc_small(tsd_t * tsd,tcache_t * tcache,void * ptr,szind_t binind,bool slow_path)168 tcache_dalloc_small(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
169 bool slow_path) {
170 cache_bin_t *bin;
171 cache_bin_info_t *bin_info;
172
173 assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= SMALL_MAXCLASS);
174
175 if (slow_path && config_fill && unlikely(opt_junk_free)) {
176 arena_dalloc_junk_small(ptr, &bin_infos[binind]);
177 }
178
179 bin = tcache_small_bin_get(tcache, binind);
180 bin_info = &tcache_bin_info[binind];
181 if (unlikely(bin->ncached == bin_info->ncached_max)) {
182 tcache_bin_flush_small(tsd, tcache, bin, binind,
183 (bin_info->ncached_max >> 1));
184 }
185 assert(bin->ncached < bin_info->ncached_max);
186 bin->ncached++;
187 *(bin->avail - bin->ncached) = ptr;
188
189 tcache_event(tsd, tcache);
190 }
191
192 JEMALLOC_ALWAYS_INLINE void
tcache_dalloc_large(tsd_t * tsd,tcache_t * tcache,void * ptr,szind_t binind,bool slow_path)193 tcache_dalloc_large(tsd_t *tsd, tcache_t *tcache, void *ptr, szind_t binind,
194 bool slow_path) {
195 cache_bin_t *bin;
196 cache_bin_info_t *bin_info;
197
198 assert(tcache_salloc(tsd_tsdn(tsd), ptr) > SMALL_MAXCLASS);
199 assert(tcache_salloc(tsd_tsdn(tsd), ptr) <= tcache_maxclass);
200
201 if (slow_path && config_fill && unlikely(opt_junk_free)) {
202 large_dalloc_junk(ptr, sz_index2size(binind));
203 }
204
205 bin = tcache_large_bin_get(tcache, binind);
206 bin_info = &tcache_bin_info[binind];
207 if (unlikely(bin->ncached == bin_info->ncached_max)) {
208 tcache_bin_flush_large(tsd, bin, binind,
209 (bin_info->ncached_max >> 1), tcache);
210 }
211 assert(bin->ncached < bin_info->ncached_max);
212 bin->ncached++;
213 *(bin->avail - bin->ncached) = ptr;
214
215 tcache_event(tsd, tcache);
216 }
217
218 JEMALLOC_ALWAYS_INLINE tcache_t *
tcaches_get(tsd_t * tsd,unsigned ind)219 tcaches_get(tsd_t *tsd, unsigned ind) {
220 tcaches_t *elm = &tcaches[ind];
221 if (unlikely(elm->tcache == NULL)) {
222 elm->tcache = tcache_create_explicit(tsd);
223 }
224 return elm->tcache;
225 }
226
227 #endif /* JEMALLOC_INTERNAL_TCACHE_INLINES_H */
228