gdb获取到的错误，帮忙看下

MeRcy_PM

看调用栈
0x00007ffd84d48b5c in malloc_printerr (ptr=0x1102530, str=0x7ffd84e4607e "malloc(): memory corruption", action=<optimized out>)
是不是有malloc(): memory corruption这个错误。
我也用libevent没出现过这个异常，用valgrind跑下看看是不是哪里分配有问题了。

jd808

回复 11# MeRcy_PM

1. valgrind --tool=memcheck --leak-check=yes --show-reachable=yes ./Xgateway
   
2. ==16111== Memcheck, a memory error detector
   
3. ==16111== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
   
4. ==16111== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
   
5. ==16111== Command: ./Xgateway
   
6. ==16111==
   
7. --16111-- WARNING: Serious error when reading debug info
   
8. --16111-- When reading debug info from /lib/x86_64-linux-gnu/ld-2.22.so:
   
9. --16111-- Ignoring non-Dwarf2/3/4 block in .debug_info
   
10. --16111-- WARNING: Serious error when reading debug info
    
11. --16111-- When reading debug info from /lib/x86_64-linux-gnu/ld-2.22.so:
    
12. --16111-- Last block truncated in .debug_info; ignoring
    
13. --16111-- WARNING: Serious error when reading debug info
    
14. --16111-- When reading debug info from /lib/x86_64-linux-gnu/ld-2.22.so:
    
15. --16111-- parse_CU_Header: is neither DWARF2 nor DWARF3 nor DWARF4
    
16. --16111-- WARNING: Serious error when reading debug info
    
17. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libm-2.22.so:
    
18. --16111-- Ignoring non-Dwarf2/3/4 block in .debug_info
    
19. --16111-- WARNING: Serious error when reading debug info
    
20. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libm-2.22.so:
    
21. --16111-- Last block truncated in .debug_info; ignoring
    
22. --16111-- WARNING: Serious error when reading debug info
    
23. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libm-2.22.so:
    
24. --16111-- parse_CU_Header: is neither DWARF2 nor DWARF3 nor DWARF4
    
25. --16111-- WARNING: Serious error when reading debug info
    
26. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libc-2.22.so:
    
27. --16111-- Ignoring non-Dwarf2/3/4 block in .debug_info
    
28. --16111-- WARNING: Serious error when reading debug info
    
29. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libc-2.22.so:
    
30. --16111-- Ignoring non-Dwarf2/3/4 block in .debug_info
    
31. --16111-- WARNING: Serious error when reading debug info
    
32. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libc-2.22.so:
    
33. --16111-- Ignoring non-Dwarf2/3/4 block in .debug_info
    
34. --16111-- WARNING: Serious error when reading debug info
    
35. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libc-2.22.so:
    
36. --16111-- Last block truncated in .debug_info; ignoring
    
37. --16111-- WARNING: Serious error when reading debug info
    
38. --16111-- When reading debug info from /lib/x86_64-linux-gnu/libc-2.22.so:
    
39. --16111-- parse_CU_Header: is neither DWARF2 nor DWARF3 nor DWARF4
    
40. ==16111== Syscall param write(buf) points to uninitialised byte(s)
    
41. ==16111==    at 0x4E43F1D: ??? (syscall-template.S:84)
    
42. ==16111==    by 0x41751C: TServer::ReadEvent(Conn*) (TServer.cpp:104)
    
43. ==16111==    by 0x52B3DDD: bufferevent_trigger_nolock_ (bufferevent-internal.h:366)
    
44. ==16111==    by 0x52B3DDD: bufferevent_readcb (bufferevent_sock.c:187)
    
45. ==16111==    by 0x52B9419: event_persist_closure (event.c:1531)
    
46. ==16111==    by 0x52B9419: event_process_active_single_queue (event.c:1590)
    
47. ==16111==    by 0x52B9E8E: event_process_active (event.c:1689)
    
48. ==16111==    by 0x52B9E8E: event_base_loop (event.c:1912)
    
49. ==16111==    by 0x416880: MultiServer::StartRun() (MultiServer.cpp:366)
    
50. ==16111==    by 0x420BD0: TControl::Run() (TControl.cpp:21)
    
51. ==16111==    by 0x406EDF: main (node_gateway.cpp:64)
    
52. ==16111==  Address 0xffeffe990 is on thread 1's stack
    
53. ==16111==  in frame #1, created by TServer::ReadEvent(Conn*) (TServer.cpp:87)
    
54. ==16111==
    
55. ==16111== Thread 5:
    
56. ==16111== Mismatched free() / delete / delete []
    
57. ==16111==    at 0x4C2A104: operator delete(void*) (vg_replace_malloc.c:575)
    
58. ==16111==    by 0x417C04: TServer::ThreadProcess(void*) (TServer.cpp:181)
    
59. ==16111==    by 0x415BBB: MultiServer::WorkerLibevent(void*) (MultiServer.cpp:398)
    
60. ==16111==    by 0x4E3B453: start_thread (pthread_create.c:334)
    
61. ==16111==    by 0x627FEDC: clone (in /lib/x86_64-linux-gnu/libc-2.22.so)
    
62. ==16111==  Address 0x6836820 is 0 bytes inside a block of size 104 alloc'd
    
63. ==16111==    at 0x4C2977D: operator new[](unsigned long) (vg_replace_malloc.c:422)
    
64. ==16111==    by 0x4174CD: TServer::ReadEvent(Conn*) (TServer.cpp:100)
    
65. ==16111==    by 0x52B3DDD: bufferevent_trigger_nolock_ (bufferevent-internal.h:366)
    
66. ==16111==    by 0x52B3DDD: bufferevent_readcb (bufferevent_sock.c:187)
    
67. ==16111==    by 0x52B9419: event_persist_closure (event.c:1531)
    
68. ==16111==    by 0x52B9419: event_process_active_single_queue (event.c:1590)
    
69. ==16111==    by 0x52B9E8E: event_process_active (event.c:1689)
    
70. ==16111==    by 0x52B9E8E: event_base_loop (event.c:1912)
    
71. ==16111==    by 0x416880: MultiServer::StartRun() (MultiServer.cpp:366)
    
72. ==16111==    by 0x420BD0: TControl::Run() (TControl.cpp:21)
    
73. ==16111==    by 0x406EDF: main (node_gateway.cpp:64)
    
74. ==16111==
    

复制代码

一堆警告，这个现在还看不出问题，要运行很久才能指定结果....

MeRcy_PM

回复 12# jd808

Mismatched free() / delete / delete []
看看这里有问题没。。
   

jd808

回复 13# MeRcy_PM
是指的
==16111==    by 0x417C04: TServer::ThreadProcess(void*) (TServer.cpp:181)这行吗？

1. //删除掉主线程的缓存
   
2.                 if(s_info->data_buf!=NULL){
   
3.                         delete s_info->data_buf;
   
4.                         s_info->data_buf=NULL;
   
5.                         s_info->data_buf_len=0;
   
6.                 }

复制代码

这行delete s_info->data_buf;改成delete[] s_info->data_buf;就没报这个错误了。