Function sqlite3_memory_highwater

pub unsafe fn sqlite3_memory_highwater(resetFlag: c_int) -> sqlite3_int64

Return the maximum amount of memory that has ever been checked out since either the beginning of this process or since the most recent reset.

See https://www.sqlite.org/c3ref/memory_highwater.html

See https://github.com/sqlite/sqlite/blob/4112a63b8fa8357133f2c8e089dcd9193fc2926b/src/malloc.c