Function do_rallocx

BeefRT/JEMalloc/src/jemalloc.c:3492–3568

}

static void *
do_rallocx(void *ptr, size_t size, int flags, bool is_realloc) {
	void *p;
	tsd_t *tsd;
	size_t usize;
	size_t old_usize;
	size_t alignment = MALLOCX_ALIGN_GET(flags);
	arena_t *arena;

	assert(ptr != NULL);
	assert(size != 0);
	assert(malloc_initialized() || IS_INITIALIZER);
	tsd = tsd_fetch();
	check_entry_exit_locking(tsd_tsdn(tsd));

	bool zero = zero_get(MALLOCX_ZERO_GET(flags), /* slow */ true);

	unsigned arena_ind = mallocx_arena_get(flags);
	if (arena_get_from_ind(tsd, arena_ind, &arena)) {
		goto label_oom;
	}

	unsigned tcache_ind = mallocx_tcache_get(flags);
	tcache_t *tcache = tcache_get_from_ind(tsd, tcache_ind,
	    /* slow */ true, /* is_alloc */ true);

	emap_alloc_ctx_t alloc_ctx;
	emap_alloc_ctx_lookup(tsd_tsdn(tsd), &arena_emap_global, ptr,
	    &alloc_ctx);
	assert(alloc_ctx.szind != SC_NSIZES);
	old_usize = sz_index2size(alloc_ctx.szind);
	assert(old_usize == isalloc(tsd_tsdn(tsd), ptr));
	if (aligned_usize_get(size, alignment, &usize, NULL, false)) {
		goto label_oom;
	}

	hook_ralloc_args_t hook_args = {is_realloc, {(uintptr_t)ptr, size,
		flags, 0}};
	if (config_prof && opt_prof) {
		p = irallocx_prof(tsd, ptr, old_usize, size, alignment, usize,
		    zero, tcache, arena, &alloc_ctx, &hook_args);
		if (unlikely(p == NULL)) {
			goto label_oom;
		}
	} else {
		p = iralloct(tsd_tsdn(tsd), ptr, old_usize, size, alignment,
		    zero, tcache, arena, &hook_args);
		if (unlikely(p == NULL)) {
			goto label_oom;
		}
		assert(usize == isalloc(tsd_tsdn(tsd), p));
	}
	assert(alignment == 0 || ((uintptr_t)p & (alignment - 1)) == ZU(0));
	thread_alloc_event(tsd, usize);
	thread_dalloc_event(tsd, old_usize);

	UTRACE(ptr, size, p);
	check_entry_exit_locking(tsd_tsdn(tsd));