#
# report-libcall.py
#
# uftrace-option: --nest-libcall -F .*@plt
#

import os

libcall_map = {}

def uftrace_begin(ctx):
    pass

def uftrace_entry(ctx):
    _name = ctx["name"]
    if _name in libcall_map:
        libcall_map[_name] += 1
    else:
        libcall_map[_name] = 1

def uftrace_exit(ctx):
    pass

def uftrace_end():
    global libcall_map
    sorted_dict = sorted(libcall_map.items(), key=lambda k: k[1], reverse=True)

    pid = os.getpid()
    with open("/proc/%s/comm" % pid) as proc_comm:
        comm = proc_comm.read()[:-1]
        print("  # Library Function Call Report for '%s' (pid: %d)\n" % (comm, pid))

    print("  %15s    %-#50s" % ("Call Count", "Library Functions"))
    print("  ================  ================================================")
    for item in sorted_dict:
        print("  %15d    %-#50s" % (item[1], item[0]))
    print("\n")