Android 死机 相关
1、使用下面的脚本hy.panic.py查找死机函数（摘自其它人的博客）
#!/usr/bin/python
# stack symbol parser
import os
import string
import sys
#define android product name
ANDROID_PRODUCT_NAME = 'generic'
ANDROID_WORKSPACE = os.getcwd()+"/"
# addr2line tool path and symbol path
addr2line_tool = ANDROID_WORKSPACE + 'prebuilt/linux-x86/toolchain/arm-eabi-4.2.1/bin/arm-eabi-addr2line'
symbol_dir = ANDROID_WORKSPACE + 'out/target/product/' + ANDROID_PRODUCT_NAME +'/symbols'
symbol_bin = symbol_dir + '/system/bin/'
symbol_lib = symbol_dir + '/system/lib/'
class ReadLog:
def __init__(self,filename):
self.logname = filename
def parse(self):
f = file(self.logname,'r')
lines = f.readlines()
if lines != []:
print 'read file ok'
else:
print 'read file failed'
result =[]
for line in lines:
if line.find('stack') != -1:
print 'stop search'
break
elif line.find('system') != -1:
#print 'find one item' + line
result.append(line)
return result
class ParseContent:
def __init__(self,addr,lib):
self.address = addr # pc address
self.exename = lib # executable or shared library
def addr2line(self):
cmd = addr2line_tool + " -C -f -s -e " + symbol_dir + self.exename + " " + self.address
#print cmd
stream = os.popen(cmd)
lines = stream.readlines();
list = map(string.strip,lines)
return list
inputarg = sys.argv
if len(inputarg) < 2:
print 'Please input panic log'
exit()
filename = inputarg[1]
readlog = ReadLog(filename)
inputlist = readlog.parse()
for item in inputlist:
itemsplit = item.split()
test = ParseContent(itemsplit[-2],itemsplit[-1])
list = test.addr2line()
print "%-30s%s" % (list[1],list[0])
把死机的地方保存到一个error.txt,内容类似如下：
I/DEBUG ( 770): #00 pc 0000dd50 /system/lib/libc.so I/DEBUG ( 770): #01 pc 0000f1aa /system/lib/libc.so I/DEBUG ( 770): #02 pc 000009b0 /system/lib/libstdc++.so I/DEBUG ( 770): #03 pc 00134b90 /data/data/com.ipanel.portal/lib/libportal_jni.so I/DEBUG ( 770): #04 pc 00134bce /data/data/com.ipanel.portal/lib/libportal_jni.so I/DEBUG ( 770): #05 pc 00134be6 /data/data/com.ipanel.portal/lib/libportal_jni.so I/DEBUG ( 770): #06 pc 0013d2f6 /data/data/com.ipanel.portal/lib/libportal_jni.so I/DEBUG ( 770): #07 pc 00147716 /data/data/com.ipanel.portal/lib/libportal_jni.so I/DEBUG ( 770): #08 pc 0013606c /data/data/com.ipanel.portal/lib/libportal_jni.so I/DEBUG ( 770): #09 pc 00011cb4 /system/lib/libdvm.so
2、系统变慢
a)、top -m 4 -d 1 查看下是哪个进程 占用了比较高的CPU;
b)、top -t -d 1 -m 10查看哪个线程占用了比较多的CPU
通过prctl(PR_SET_NAME, (unsigned long)"main_mgr_thread", 0, 0, 0);在线程函数开始设置线程的名字
c)、cat /proc/meminfo查看下内在情况