import os
import re

def get_map_range(map_range):
    map_ranges = map_range.split("-")
    range_from = int(map_ranges[0], 16)
    range_to = int(map_ranges[1], 16)
    return (range_from, range_to)
    
def show_threads_stack_info(verbose):
    (inferior,) = gdb.inferiors()
    proc_map_file_name = "/proc/{}/maps".format(inferior.pid) 
    proc_map_file = open(proc_map_file_name, 'r')
    map_ranges = []
    while True:
        line = proc_map_file.readline()
        if not line:
            break
        map_range = line.split()[0]
        (range_from, range_to) = get_map_range(map_range)
        map_ranges.append((map_range, range_from, range_to))

    totalSizeKB = 0
    totalPssKB = 0

    for thread in inferior.threads():
        thread.switch()
        frame = gdb.selected_frame()
        rsp_val = int(frame.read_register("rsp"))
        if verbose:
            print("------------------")
            gdb.execute("bt")
        for r in map_ranges:
            (map_range, range_from, range_to) = r
            if rsp_val>=range_from and rsp_val<range_to: 
                cmd = "grep -A5 {} /proc/{}/smaps".format(map_range, inferior.pid)
                res = os.popen(cmd).read().split("\n")
                SizeKB = int(re.split(r"\s+", res[1])[1])
                PssKB = int(re.split(r"\s+", res[5])[1])
                if verbose:
                    print(res[0])
                    print(res[1])
                    print(res[2])
                    print(res[3])
                    print(res[4])
                    print(res[5])
                totalSizeKB += SizeKB
                totalPssKB += PssKB

    print("totalSize: {} KB, totalPss: {} KB".format(totalSizeKB, totalPssKB) )

class ShowThreadsStackInfo (gdb.Command):
  """Show Threads stack info
  show-threads-stack-info [1]
  """

  def __init__ (self):
    super (ShowThreadsStackInfo, self).__init__ ("show-threads-stack-info", gdb.COMMAND_USER)

  def invoke (self, arg, from_tty):
    show_threads_stack_info(arg=="1")

ShowThreadsStackInfo ()

在gdb里执行

show-threads-stack-info 1