From 065ba5f7493b1d27fd5320c99b597e2d96fb3396 Mon Sep 17 00:00:00 2001 From: glx Date: Tue, 29 Oct 2024 11:25:00 +0800 Subject: [PATCH 12/20] =?UTF-8?q?=E4=BF=AE=E5=A4=8DUT=E7=94=A8=E4=BE=8BSpe?= =?UTF-8?q?ProcCollectSubProc=E3=80=82?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 问题： UT用例SpeProcCollectSubProc报错。 原因： 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。 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。 解决方法： 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。 --- pmu/spe.cpp | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/pmu/spe.cpp b/pmu/spe.cpp index 99b7a89..4d964fb 100644 --- a/pmu/spe.cpp +++ b/pmu/spe.cpp @@ -372,7 +372,13 @@ void Spe::CoreDummyData(struct SpeCoreContext *context, struct ContextSwitchData if (header->type == PERF_RECORD_FORK) { struct PerfRecordFork *sample = (struct PerfRecordFork *)header; DBG_PRINT("Fork pid: %d tid: %d\n", sample->pid, sample->tid); - UpdateProcMap(sample->pid, sample->tid); + if (sample->pid == sample->tid) { + // A new process is forked and the parent pid is ppid. + UpdateProcMap(sample->ppid, sample->tid); + } else { + // A new thread is created and the parent pid is pid(process id). + UpdateProcMap(sample->pid, sample->tid); + } dataTail += header->size; continue; } -- 2.43.0