45 lines
1.7 KiB
Diff
45 lines
1.7 KiB
Diff
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From 065ba5f7493b1d27fd5320c99b597e2d96fb3396 Mon Sep 17 00:00:00 2001
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From: glx <ganli2012@gmail.com>
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Date: Tue, 29 Oct 2024 11:25:00 +0800
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Subject: [PATCH 12/20] =?UTF-8?q?=E4=BF=AE=E5=A4=8DUT=E7=94=A8=E4=BE=8BSpe?=
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=?UTF-8?q?ProcCollectSubProc=E3=80=82?=
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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问题：
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UT用例SpeProcCollectSubProc报错。
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原因：
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用例SpeProcCollectSubProc执行过程：启动应用，开始采集，应用fork进程，校验子进程是否被采集到。
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子进程未被采集到，因为UpdateProcMap函数里未找到子进程的父进程，所以子进程没有被添加到procMap。
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解决方法：
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对于fork子进程的场景，父进程应该是ppid，而不是pid，可以把ppid传入到UpdateProcMap。
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---
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pmu/spe.cpp | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/pmu/spe.cpp b/pmu/spe.cpp
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index 99b7a89..4d964fb 100644
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--- a/pmu/spe.cpp
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+++ b/pmu/spe.cpp
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@@ -372,7 +372,13 @@ void Spe::CoreDummyData(struct SpeCoreContext *context, struct ContextSwitchData
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if (header->type == PERF_RECORD_FORK) {
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struct PerfRecordFork *sample = (struct PerfRecordFork *)header;
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DBG_PRINT("Fork pid: %d tid: %d\n", sample->pid, sample->tid);
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- UpdateProcMap(sample->pid, sample->tid);
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+ if (sample->pid == sample->tid) {
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+ // A new process is forked and the parent pid is ppid.
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+ UpdateProcMap(sample->ppid, sample->tid);
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+ } else {
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+ // A new thread is created and the parent pid is pid(process id).
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+ UpdateProcMap(sample->pid, sample->tid);
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+ }
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dataTail += header->size;
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continue;
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}
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--
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2.43.0
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