Function ixallocx_prof

app/redis-6.2.6/deps/jemalloc/src/jemalloc.c:2779–2826

}

JEMALLOC_ALWAYS_INLINE size_t
ixallocx_prof(tsd_t *tsd, void *ptr, size_t old_usize, size_t size,
    size_t extra, size_t alignment, bool zero, alloc_ctx_t *alloc_ctx) {
	size_t usize_max, usize;
	bool prof_active;
	prof_tctx_t *old_tctx, *tctx;

	prof_active = prof_active_get_unlocked();
	old_tctx = prof_tctx_get(tsd_tsdn(tsd), ptr, alloc_ctx);
	/*
	 * usize isn't knowable before ixalloc() returns when extra is non-zero.
	 * Therefore, compute its maximum possible value and use that in
	 * prof_alloc_prep() to decide whether to capture a backtrace.
	 * prof_realloc() will use the actual usize to decide whether to sample.
	 */
	if (alignment == 0) {
		usize_max = sz_s2u(size+extra);
		assert(usize_max > 0 && usize_max <= LARGE_MAXCLASS);
	} else {
		usize_max = sz_sa2u(size+extra, alignment);
		if (unlikely(usize_max == 0 || usize_max > LARGE_MAXCLASS)) {
			/*
			 * usize_max is out of range, and chances are that
			 * allocation will fail, but use the maximum possible
			 * value and carry on with prof_alloc_prep(), just in
			 * case allocation succeeds.
			 */
			usize_max = LARGE_MAXCLASS;
		}
	}
	tctx = prof_alloc_prep(tsd, usize_max, prof_active, false);

	if (unlikely((uintptr_t)tctx != (uintptr_t)1U)) {
		usize = ixallocx_prof_sample(tsd_tsdn(tsd), ptr, old_usize,
		    size, extra, alignment, zero, tctx);
	} else {
		usize = ixallocx_helper(tsd_tsdn(tsd), ptr, old_usize, size,
		    extra, alignment, zero);
	}
	if (usize == old_usize) {
		prof_alloc_rollback(tsd, tctx, false);
		return usize;
	}
	prof_realloc(tsd, ptr, usize, tctx, prof_active, false, ptr, old_usize,
	    old_tctx);

	return usize;
}

JEMALLOC_EXPORT size_t JEMALLOC_NOTHROW
je_xallocx(void *ptr, size_t size, size_t extra, int flags) {