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终止 valgrind 内运行的进程

发布于 2024-12-03 05:05:23 字数 76 浏览 0 评论 0原文

终止 valgrind 进程本身不会留下有关内部进程执行的报告。

是否可以向 valgrind 内运行的进程发送终止信号？

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失眠症患者 2024-12-10 05:05:23

不存在“内部进程”，因为 valgrind 本身和它运行的客户端程序都在单个进程中执行。

发送到该进程的信号将正常传递到客户端程序。如果信号导致进程终止，则 valgrind 的正常退出处理程序将运行并（例如）报告任何泄漏。

因此，例如，如果我们在 sleep 命令上启动 valgrind：

bericote [~] % valgrind sleep 240
==9774== Memcheck, a memory error detector
==9774== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==9774== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info
==9774== Command: sleep 240
==9774==

然后终止该命令：

bericote [~] % kill -TERM 9774

那么进程将退出并且 valgrind 的退出处理程序将运行：

==9774== 
==9774== HEAP SUMMARY:
==9774==     in use at exit: 0 bytes in 0 blocks
==9774==   total heap usage: 30 allocs, 30 frees, 3,667 bytes allocated
==9774== 
==9774== All heap blocks were freed -- no leaks are possible
==9774== 
==9774== For counts of detected and suppressed errors, rerun with: -v
==9774== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 6 from 6)
[1]    9774 terminated  valgrind sleep 240

唯一的例外是 kill -9 ，如下所示如果进程在没有收到信号通知的情况下被内核杀死，那么 valgrind 就没有机会做任何事情。

There is no "inner process" as both valgrind itself and the client program it is running execute in a single process.

Signals sent to that process will be delivered to the client program as normal. If the signal causes the process to terinate then valgrind's normal exit handlers will run and (for example) report any leaks.

So, for example, if we start valgrind on a sleep command:

bericote [~] % valgrind sleep 240
==9774== Memcheck, a memory error detector
==9774== Copyright (C) 2002-2010, and GNU GPL'd, by Julian Seward et al.
==9774== Using Valgrind-3.6.1 and LibVEX; rerun with -h for copyright info
==9774== Command: sleep 240
==9774==

then kill that command:

bericote [~] % kill -TERM 9774

then the process will exit and valgrind's exit handlers will run:

==9774== 
==9774== HEAP SUMMARY:
==9774==     in use at exit: 0 bytes in 0 blocks
==9774==   total heap usage: 30 allocs, 30 frees, 3,667 bytes allocated
==9774== 
==9774== All heap blocks were freed -- no leaks are possible
==9774== 
==9774== For counts of detected and suppressed errors, rerun with: -v
==9774== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 6 from 6)
[1]    9774 terminated  valgrind sleep 240

The only exception would be for kill -9 as in that case the process is killed by the kernel without ever being informed of the signal so valgrind has no opportunity to do anything.

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