{"id":13387,"url":"https://patchwork.libcamera.org/api/patches/13387/?format=json","web_url":"https://patchwork.libcamera.org/patch/13387/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20210818090247.33838-3-umang.jain@ideasonboard.com>","date":"2021-08-18T09:02:47","name":"[libcamera-devel,v2,2/2] test: camera: Camera reconfiguration and fd-leak test","commit_ref":null,"pull_url":null,"state":"accepted","archived":false,"hash":"eb9e1317d2e9647b297da8d7f70ec848a092adc2","submitter":{"id":86,"url":"https://patchwork.libcamera.org/api/people/86/?format=json","name":"Umang Jain","email":"umang.jain@ideasonboard.com"},"delegate":{"id":12,"url":"https://patchwork.libcamera.org/api/users/12/?format=json","username":"uajain","first_name":"Umang","last_name":"Jain","email":"umang.jain@ideasonboard.com"},"mbox":"https://patchwork.libcamera.org/patch/13387/mbox/","series":[{"id":2369,"url":"https://patchwork.libcamera.org/api/series/2369/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=2369","date":"2021-08-18T09:02:45","name":"Fd leak test","version":2,"mbox":"https://patchwork.libcamera.org/series/2369/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/13387/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/13387/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 88D09BD87C\n\tfor ;\n\tWed, 18 Aug 2021 09:03:09 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 54118688A5;\n\tWed, 18 Aug 2021 11:03:09 +0200 (CEST)","from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id C224568893\n\tfor ;\n\tWed, 18 Aug 2021 11:03:07 +0200 (CEST)","from perceval.ideasonboard.com (unknown [103.238.109.15])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id 071CF466;\n\tWed, 18 Aug 2021 11:03:05 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n\tunprotected) header.d=ideasonboard.com header.i=@ideasonboard.com\n\theader.b=\"HpHzpEBX\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1629277386;\n\tbh=ack2zCUJm6QTm6zDqN8qGID6cBkZ7RFfVhLVeyfB6G8=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=HpHzpEBXsu6zi/QJEgrYWjlCPlTlAGnzfkXyJC1ZfsEPsWcPbZ3WwX104oR6M5LRS\n\tIlqcW0Hl3LDjUbZV19QvfkJofV5lJ4CzH/4lyngPj/snA2OkhdCsS/jqWIkice/mt1\n\tM/zY4auYl16yqSB/HYuGQQ7s0CuXDfYieaYOuWec=","From":"Umang Jain ","To":"libcamera-devel@lists.libcamera.org","Date":"Wed, 18 Aug 2021 14:32:47 +0530","Message-Id":"<20210818090247.33838-3-umang.jain@ideasonboard.com>","X-Mailer":"git-send-email 2.31.1","In-Reply-To":"<20210818090247.33838-1-umang.jain@ideasonboard.com>","References":"<20210818090247.33838-1-umang.jain@ideasonboard.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v2 2/2] test: camera: Camera\n\treconfiguration and fd-leak test","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"This tests basically checks for two things:\n- Camera reconfigurations without stopping CameraManager\n- Fd leaks across IPA IPC boundary [1]\n\nCurrently, it uses vimc, but can be easily changed to using another\nplatform (for e.g. IPU3) by changing kCamId_ and kIpaProxyName_.\n\nThe test performs kNumOfReconfigures_ (currently set to 10)\nreconfigurations of the camera. Each reconfiguration runs\nstart(), capture(100ms), stop() of the camera. Hence, the test\nruns approximately for 1 second.\n\nFor checking the fd leaks, the test monitors the /proc/$PROXY_PID/fd\ndirectory for open fds. It compares the number of open fds after each\nrun to the number of open fds before the first run. If those two are\nfound to be mis-matched, the test shall report failure.\n\nSince, the test needs to test the IPA IPC code paths, it is meant to\nalways run with LIBCAMERA_IPA_FORCE_ISOLATION=1 environment variable.\n\n[1] https://bugs.libcamera.org/show_bug.cgi?id=63\n\nSigned-off-by: Umang Jain \n---\n test/camera/camera_reconfigure.cpp | 255 +++++++++++++++++++++++++++++\n test/camera/meson.build | 1 +\n 2 files changed, 256 insertions(+)\n create mode 100644 test/camera/camera_reconfigure.cpp","diff":"diff --git a/test/camera/camera_reconfigure.cpp b/test/camera/camera_reconfigure.cpp\nnew file mode 100644\nindex 00000000..90f798fe\n--- /dev/null\n+++ b/test/camera/camera_reconfigure.cpp\n@@ -0,0 +1,255 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ * Copyright (C) 2021, Google Inc.\n+ *\n+ * Test:\n+ * - Camera's multiple reconfigurations without stopping CameraManager\n+ * - leaking fds across IPA IPC boundary\n+ */\n+\n+#include \n+#include \n+#include \n+\n+#include \n+#include \n+#include \n+#include \n+\n+#include \n+\n+#include \"camera_test.h\"\n+#include \"test.h\"\n+\n+using namespace std;\n+\n+namespace {\n+\n+class CameraReconfigure : public CameraTest, public Test\n+{\n+public:\n+\tCameraReconfigure()\n+\t\t: CameraTest(kCamId_, true)\n+\t{\n+\t}\n+\n+private:\n+\tstatic constexpr const char *kCamId_ = \"platform/vimc.0 Sensor B\";\n+\tstatic constexpr const char *kIpaProxyName_ = \"vimc_ipa_proxy\";\n+\tstatic constexpr unsigned int kNumOfReconfigures_ = 10;\n+\n+\tvoid requestComplete(Request *request)\n+\t{\n+\t\tif (request->status() != Request::RequestComplete)\n+\t\t\treturn;\n+\n+\t\tconst Request::BufferMap &buffers = request->buffers();\n+\n+\t\t/* Create a new request. */\n+\t\tconst Stream *stream = buffers.begin()->first;\n+\t\tFrameBuffer *buffer = buffers.begin()->second;\n+\n+\t\trequest->reuse();\n+\t\trequest->addBuffer(stream, buffer);\n+\t\tcamera_->queueRequest(request);\n+\t}\n+\n+\tint startAndStop()\n+\t{\n+\t\tStreamConfiguration &cfg = config_->at(0);\n+\n+\t\tif (camera_->acquire()) {\n+\t\t\tcerr << \"Failed to acquire the camera\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tif (camera_->configure(config_.get())) {\n+\t\t\tcerr << \"Failed to set default configuration\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tStream *stream = cfg.stream();\n+\n+\t\tif (!allocated_) {\n+\t\t\tint ret = allocator_->allocate(stream);\n+\t\t\tif (ret < 0)\n+\t\t\t\treturn TestFail;\n+\t\t\tallocated_ = true;\n+\t\t}\n+\n+\t\tfor (const unique_ptr &buffer : allocator_->buffers(stream)) {\n+\t\t\tunique_ptr request = camera_->createRequest();\n+\t\t\tif (!request) {\n+\t\t\t\tcerr << \"Failed to create request\" << endl;\n+\t\t\t\treturn TestFail;\n+\t\t\t}\n+\n+\t\t\tif (request->addBuffer(stream, buffer.get())) {\n+\t\t\t\tcerr << \"Failed to associating buffer with request\" << endl;\n+\t\t\t\treturn TestFail;\n+\t\t\t}\n+\n+\t\t\trequests_.push_back(move(request));\n+\t\t}\n+\n+\t\tcamera_->requestCompleted.connect(this, &CameraReconfigure::requestComplete);\n+\n+\t\tif (camera_->start()) {\n+\t\t\tcerr << \"Failed to start camera\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tfor (unique_ptr &request : requests_) {\n+\t\t\tif (camera_->queueRequest(request.get())) {\n+\t\t\t\tcerr << \"Failed to queue request\" << endl;\n+\t\t\t\treturn TestFail;\n+\t\t\t}\n+\t\t}\n+\n+\t\tEventDispatcher *dispatcher = Thread::current()->eventDispatcher();\n+\n+\t\tTimer timer;\n+\t\ttimer.start(100);\n+\t\twhile (timer.isRunning())\n+\t\t\tdispatcher->processEvents();\n+\n+\t\tif (camera_->stop()) {\n+\t\t\tcerr << \"Failed to stop camera\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tif (camera_->release()) {\n+\t\t\tcerr << \"Failed to release camera\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tcamera_->requestCompleted.disconnect(this, &CameraReconfigure::requestComplete);\n+\n+\t\trequests_.clear();\n+\n+\t\treturn 0;\n+\t}\n+\n+\tint fdsOpen(pid_t pid)\n+\t{\n+\t\tstring proxyFdPath = \"/proc/\" + to_string(pid) + \"/fd\";\n+\t\tDIR *dir;\n+\t\tstruct dirent *ptr;\n+\t\tunsigned int openFds = 0;\n+\n+\t\tdir = opendir(proxyFdPath.c_str());\n+\t\tif (dir == nullptr) {\n+\t\t\tint err = errno;\n+\t\t\tcerr << \"Error opening \" << proxyFdPath << \": \"\n+\t\t\t << strerror(-err) << endl;\n+\t\t\treturn 0;\n+\t\t}\n+\n+\t\twhile ((ptr = readdir(dir)) != nullptr) {\n+\t\t\tif ((strcmp(ptr->d_name, \".\") == 0) ||\n+\t\t\t (strcmp(ptr->d_name, \"..\") == 0))\n+\t\t\t\tcontinue;\n+\n+\t\t\topenFds++;\n+\t\t}\n+\t\tclosedir(dir);\n+\n+\t\treturn openFds;\n+\t}\n+\n+\tpid_t findProxyPid()\n+\t{\n+\t\tstring proxyPid;\n+\t\tstring proxyName(kIpaProxyName_);\n+\t\tDIR *dir;\n+\t\tstruct dirent *ptr;\n+\n+\t\tdir = opendir(\"/proc\");\n+\t\twhile ((ptr = readdir(dir)) != nullptr) {\n+\t\t\tif (ptr->d_type != DT_DIR)\n+\t\t\t\tcontinue;\n+\n+\t\t\tstring pname(\"/proc/\" + string(ptr->d_name) + \"/comm\");\n+\t\t\tif (File::exists(pname.c_str())) {\n+\t\t\t\tifstream pfile(pname.c_str());\n+\t\t\t\tstring comm;\n+\t\t\t\tgetline(pfile, comm);\n+\t\t\t\tpfile.close();\n+\n+\t\t\t\tproxyPid = comm == proxyName ? string(ptr->d_name) : \"\";\n+\t\t\t}\n+\n+\t\t\tif (!proxyPid.empty())\n+\t\t\t\tbreak;\n+\t\t}\n+\t\tclosedir(dir);\n+\n+\t\tif (!proxyPid.empty())\n+\t\t\treturn atoi(proxyPid.c_str());\n+\n+\t\treturn -1;\n+\t}\n+\n+\tint init() override\n+\t{\n+\t\tif (status_ != TestPass)\n+\t\t\treturn status_;\n+\n+\t\tconfig_ = camera_->generateConfiguration({ StreamRole::StillCapture });\n+\t\tif (!config_ || config_->size() != 1) {\n+\t\t\tcerr << \"Failed to generate default configuration\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\tallocator_ = make_unique(camera_);\n+\t\tallocated_ = false;\n+\n+\t\treturn TestPass;\n+\t}\n+\n+\tint run() override\n+\t{\n+\t\tunsigned int openFdsAtStart = 0;\n+\t\tunsigned int openFds = 0;\n+\n+\t\tpid_t proxyPid = findProxyPid();\n+\t\tif (proxyPid < 0) {\n+\t\t\tcerr << \"Cannot find \" << kIpaProxyName_\n+\t\t\t << \" pid, exiting\" << endl;\n+\t\t\treturn TestFail;\n+\t\t}\n+\n+\t\topenFdsAtStart = fdsOpen(proxyPid);\n+\t\tfor (unsigned int i = 0; i < kNumOfReconfigures_; i++) {\n+\t\t\tstartAndStop();\n+\t\t\topenFds = fdsOpen(proxyPid);\n+\t\t\tif (openFds == 0) {\n+\t\t\t\tcerr << \"No open fds found whereas \"\n+\t\t\t\t << \"open fds at start: \" << openFdsAtStart\n+\t\t\t\t << endl;\n+\t\t\t\treturn TestFail;\n+\t\t\t}\n+\n+\t\t\tif (openFds != openFdsAtStart) {\n+\t\t\t\tcerr << \"Leaking fds for \" << kIpaProxyName_\n+\t\t\t\t << \" - Open fds: \" << openFds << \" vs \"\n+\t\t\t\t << \"Open fds at start: \" << openFdsAtStart\n+\t\t\t\t << endl;\n+\t\t\t\treturn TestFail;\n+\t\t\t}\n+\t\t}\n+\n+\t\treturn TestPass;\n+\t}\n+\n+\tbool allocated_;\n+\n+\tvector> requests_;\n+\n+\tunique_ptr config_;\n+\tunique_ptr allocator_;\n+};\n+\n+} /* namespace */\n+\n+TEST_REGISTER(CameraReconfigure)\ndiff --git a/test/camera/meson.build b/test/camera/meson.build\nindex 002a87b5..668d5c03 100644\n--- a/test/camera/meson.build\n+++ b/test/camera/meson.build\n@@ -8,6 +8,7 @@ camera_tests = [\n ['buffer_import', 'buffer_import.cpp'],\n ['statemachine', 'statemachine.cpp'],\n ['capture', 'capture.cpp'],\n+ ['camera_reconfigure', 'camera_reconfigure.cpp'],\n ]\n \n foreach t : camera_tests\n","prefixes":["libcamera-devel","v2","2/2"]}