restore -- Restore the contents of FILE to target memoryset-- Evaluate expression EXP and assign result to variable VARsetada -- Prefixcommandforchanging Ada-specfic settingssetada trust-PAD-over-XVS -- Enable ordisablean optimization trusting PAD types over XVS typessetagent -- Set debugger's...
2312:M 12 Nov 2021 22:41:40.111 # Server initialized 2312:M 12 Nov 2021 22:41:40.111 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the comm...
set vairiable a = 100 可以修改变量的值 commands 指定到了特定断点后执行的命令序列 whatis buf 显示变量的类型 dump memory 输出文件名 内存起始地址 内存终止地址 restore 文件名 binary 起始位置 watch buf buf的值一旦改变,会触发watchpoint 奇淫技巧: cat ~/.gbinit gdb会从这个文件读取配置 cat ~/.gdb_...
[Switching to Thread 0x7ffff782c700 (LWP 25443)] Hardware watchpoint 2: a Old value = 1 New value = 3 thread1_func (p_arg=0x400718) at a.c:11 11 sleep(10); (gdb) c Continuing. Hardware watchpoint 2: a Old value = 3 New value = 5 thread1_func (p_arg=0x400718) at a....
3704 int main(int argc, char **argv) { (gdb) n 3736 spt_init(argc, argv); (gdb) n 3738 setlocale(LC_COLLATE,""); (gdb) n 3739 zmalloc_set_oom_handler(redisOutOfMemoryHandler); (gdb) n 3740 srand(time(NULL)^getpid()); (gdb) n 3752 server.exec_argv = zmalloc(sizeof(char*...
mtrace(memory trace),是 GNU Glibc 自带的内存问题检测工具。 基本设计原理为设计一个函数 void mtrace (),函数对 libc 库中的 malloc/free 等函数的调用进行追踪 但是存在一个问题,它没办法直接显示动态库所在的源码行数,而 Linux 开发动态库的使用是十分常见的,那么该篇就讲讲 mtrace 如何定位动态库中的内存...
# To that end, the default is to set the PTRACE scope to "1". This value # may not be appropriate for developers or servers with only admin accounts. kernel.yama.ptrace_scope = 1 只需要修改下 kernel.yama.ptrace_scope = 1 为 0 即可(注:这里要切换到 Root 用户),如下: $ cd /etc/...
10.24 Value Sizes Whenever GDB prints a value memory will be allocated within GDB to hold the contents of the value. It is possible in some languages with dynamic typing systems, that an invalid program may indicate a value that is incorrectly large, this in turn may cause GDB to try and...
CUDA-GDB allows the user to set breakpoints, to single-step CUDA applications, and also to inspect and modify the memory and variables of any given thread running on the hardware. CUDA-GDB supports debugging all CUDA applications, whether they use the CUDA driver API, the CUDA runtime API,...
(gdb) set variable c=0 (gdb) p c $2 = 0 (gdb) 第十:生成内核转储文件 (gdb) generate-core-file warning: Memory read failed for corefile section, 4096 bytes at 0xffffffffff600000. Saved corefile core.2380 有了内核转储文件,即使退出了GDB也能查看生成转储文件时的运行历史。