memory-use-counts

memory-use-counts is a built-in function in `C source code'.

(memory-use-counts)

Return a list of counters that measure how much consing there has been.
Each of these counters increments for a certain kind of object.
The counters wrap around from the largest positive integer to zero.
Garbage collection does not decrease them.
The elements of the value are as follows:
(CONSES FLOATS VECTOR-CELLS SYMBOLS STRING-CHARS MISCS INTERVALS STRINGS)
All are in units of 1 = one object consed
except for VECTOR-CELLS and STRING-CHARS, which count the total length of
objects consed.
MISCS include overlays, markers, and some internal types.
Frames, windows, buffers, and subprocesses count as vectors
(but the contents of a buffer's text do not count here).