diff options
Diffstat (limited to 'deps/jemalloc/include/jemalloc/internal/exp_grow.h')
-rw-r--r-- | deps/jemalloc/include/jemalloc/internal/exp_grow.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/deps/jemalloc/include/jemalloc/internal/exp_grow.h b/deps/jemalloc/include/jemalloc/internal/exp_grow.h new file mode 100644 index 0000000..8566b8a --- /dev/null +++ b/deps/jemalloc/include/jemalloc/internal/exp_grow.h @@ -0,0 +1,50 @@ +#ifndef JEMALLOC_INTERNAL_EXP_GROW_H +#define JEMALLOC_INTERNAL_EXP_GROW_H + +typedef struct exp_grow_s exp_grow_t; +struct exp_grow_s { + /* + * Next extent size class in a growing series to use when satisfying a + * request via the extent hooks (only if opt_retain). This limits the + * number of disjoint virtual memory ranges so that extent merging can + * be effective even if multiple arenas' extent allocation requests are + * highly interleaved. + * + * retain_grow_limit is the max allowed size ind to expand (unless the + * required size is greater). Default is no limit, and controlled + * through mallctl only. + */ + pszind_t next; + pszind_t limit; +}; + +static inline bool +exp_grow_size_prepare(exp_grow_t *exp_grow, size_t alloc_size_min, + size_t *r_alloc_size, pszind_t *r_skip) { + *r_skip = 0; + *r_alloc_size = sz_pind2sz(exp_grow->next + *r_skip); + while (*r_alloc_size < alloc_size_min) { + (*r_skip)++; + if (exp_grow->next + *r_skip >= + sz_psz2ind(SC_LARGE_MAXCLASS)) { + /* Outside legal range. */ + return true; + } + *r_alloc_size = sz_pind2sz(exp_grow->next + *r_skip); + } + return false; +} + +static inline void +exp_grow_size_commit(exp_grow_t *exp_grow, pszind_t skip) { + if (exp_grow->next + skip + 1 <= exp_grow->limit) { + exp_grow->next += skip + 1; + } else { + exp_grow->next = exp_grow->limit; + } + +} + +void exp_grow_init(exp_grow_t *exp_grow); + +#endif /* JEMALLOC_INTERNAL_EXP_GROW_H */ |