) { elem = *((*unsafe.Pointer)(elem)) }return elem}map 通过标志位 h.flags 来检查 map 是否存并发写情况，如果存在，则调用 fatal 方法，此时错误为 "fatal error"，会强制退出程序，详情见 fatal 源码：// fatal triggers a fatal error that dumps a stack trace and exits./// fatal is e...
threads --- Print out info for every traced thread. Viewing the call stack and selecting frames: //输出调用栈 stack (alias: bt) Print stack trace. Other commands: //输出程序汇编指令 disassemble (alias: disass) Disassembler. //显示源代码 list (alias: ls | l) --- Show source code. ...
// Everything fatal does should be recursively nosplit so it // can be called even when it's unsafe to grow the stack. systemstack(func{ print("fatal error: ", s,"\n") }) fatalthrow(throwTypeUser) } // fatalthrow implements an unrecoverable runtime throw. It freezes the // system...
trace (alias: t) --- Set tracepoint. //设置trace断点 Viewing program variables and memory: //查看变量和内存的命令 args --- Print function arguments. display --- Print value of an expression every time the program stops. examinemem (alias: x) Examine memory: locals --- Print local vari...
stack (alias: bt) Print stack trace. up --- Move the current frame up. Other commands: //其他命令 config --- Changes configuration parameters. disassemble (alias: disass) Disassembler. edit (alias: ed) --- Open where you are in $DELVE_EDITOR or $EDITOR exit (alias: quit | q) -...
Golang 作为一门“现代化”的语言,原生就包含了强大的性能分析工具pprof 和 trace。pprof 工具常用于分析资源的使用情况,可以采集程序运行时的多种不同类型的数据(例如 CPU 占用、内存消耗和协程数量等),并对数据进行分析聚合生成的报告。trace 工具则关注程序运行时的事件(例如协程状态切换,GC 的开始和结束、系统调...
printSliceHeader(&sl) } }//sl为局部变量,SliceHeader没有逃逸,Data不需要动态扩容,分配在栈上func noEscapeSliceWithDataInStack() { sl := make([]byte,0,10)//noEscapeSliceWithDataInStack make([]byte, 0, 10) does not escapeprintln("addr of local(no escape, data in stack) slice =", &...
GOTRACEBACK来控制Golang panic stack trace输出的信息 GOTRACEBACK的设置值有几种,下面分别说明:exportGOTRACEBACK=none:完全省略panic的stacktraces。exportGOTRACEBACK=single(默认值)只打印当前goroutine的部分stacktraces。当不存在当前goroutine或者是由于runtime内部的错误导致的panic,则会打印出所有goroutine的堆栈。
This lead to a large internal refactor of the package to collect and expose this natural stack trace. Fprint and Print have been removed As mentioned earlier, the mechanism for printing not just the err.Error() text of an error, but also its stack trace, has also changed with feedback fr...
echo"export GOTRACEBACK=crash ">> ~/.profile 三、案例分析 GOTRACEBAK变量可以控制程序在崩溃时,stack的输出情况。下面结合具体地程序来分析。 packagemainimport("time""github.com/astaxie/beego/logs")funcmain(){ logs.Info("Start...")deferlogs.Info("exit.") ...