跟踪Linux中本地函数调用的工具

假设只希望收到有关特定功能的通知，可以这样进行：

使用调试信息进行编译（由于您已经具有符号信息，因此您可能还具有足够的调试功能）

给定

#include <iostream>int fac(int n) {    if(n == 0)        return 1;    return n * fac(n-1);}int main(){    for(int i=0;i<4;i++)        std::cout << fac(i) << std::endl;}

使用gdb跟踪：

[js@HOST2 cpp]$ g++ -g3 test.cpp[js@HOST2 cpp]$ gdb ./a.out(gdb) b facBreakpoint 1 at 0x804866a: file test.cpp, line 4.(gdb) commands 1Type commands for when breakpoint 1 is hit, one per line.End with a line saying just "end".>silent>bt 1>c>end(gdb) runStarting program: /home/js/cpp/a.out#0  fac (n=0) at test.cpp:41#0  fac (n=1) at test.cpp:4#0  fac (n=0) at test.cpp:41#0  fac (n=2) at test.cpp:4#0  fac (n=1) at test.cpp:4#0  fac (n=0) at test.cpp:42#0  fac (n=3) at test.cpp:4#0  fac (n=2) at test.cpp:4#0  fac (n=1) at test.cpp:4#0  fac (n=0) at test.cpp:46Program exited normally.(gdb)

这是我收集所有函数地址的方法：

tmp=$(mktemp)readelf -s ./a.out | gawk '{   if($4 == "FUNC" && $2 != 0) {     print "# pre for " $NF;     print "b *0x" $2;     print "commands";     print "silent";     print "bt 1";     print "c";     print "end";     print "";   } }' > $tmp; gdb --command=$tmp ./a.out; rm -f $tmp

请注意，除了打印当前frame（

bt1

fatal_bomb_exploded