Created
September 20, 2018 08:53
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static int do_slabs_newslab(const unsigned int id) { | |
slabclass_t *p = &slabclass[id]; // scr: ----------------------------> 1) | |
slabclass_t *g = &slabclass[SLAB_GLOBAL_PAGE_POOL]; // scr: ---------> *) | |
int len = settings.slab_reassign ? settings.item_size_max // scr: ---> 2) | |
: p->size * p->perslab; | |
char *ptr; | |
if ((mem_limit && mem_malloced + len > mem_limit && p->slabs > 0 // -> 3) | |
&& g->slabs == 0)) { | |
mem_limit_reached = true; | |
MEMCACHED_SLABS_SLABCLASS_ALLOCATE_FAILED(id); | |
return 0; | |
} | |
if ((grow_slab_list(id) == 0) || // scr: ----------------------------> 4) | |
(((ptr = get_page_from_global_pool()) == NULL) && // scr: -------> *) | |
((ptr = memory_allocate((size_t)len)) == 0))) { // scr: ---------> 5) | |
MEMCACHED_SLABS_SLABCLASS_ALLOCATE_FAILED(id); | |
return 0; | |
} | |
memset(ptr, 0, (size_t)len); | |
split_slab_page_into_freelist(ptr, id); // scr: ---------------------> 6) | |
p->slab_list[p->slabs++] = ptr; // scr: -----------------------------> 7) | |
MEMCACHED_SLABS_SLABCLASS_ALLOCATE(id); | |
return 1; | |
} |
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