diff options
Diffstat (limited to 'cmds/statsd/src/external/Perfetto.cpp')
-rw-r--r-- | cmds/statsd/src/external/Perfetto.cpp | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/cmds/statsd/src/external/Perfetto.cpp b/cmds/statsd/src/external/Perfetto.cpp deleted file mode 100644 index 85b660efc956..000000000000 --- a/cmds/statsd/src/external/Perfetto.cpp +++ /dev/null @@ -1,139 +0,0 @@ -/* - * Copyright (C) 2018 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#define DEBUG false // STOPSHIP if true -#include "config/ConfigKey.h" -#include "Log.h" - -#include "frameworks/base/cmds/statsd/src/statsd_config.pb.h" // Alert - -#include <android-base/unique_fd.h> -#include <inttypes.h> -#include <sys/wait.h> - -#include <string> - -namespace { -const char kDropboxTag[] = "perfetto"; -} - -namespace android { -namespace os { -namespace statsd { - -bool CollectPerfettoTraceAndUploadToDropbox(const PerfettoDetails& config, - int64_t subscription_id, - int64_t alert_id, - const ConfigKey& configKey) { - VLOG("Starting trace collection through perfetto"); - - if (!config.has_trace_config()) { - ALOGE("The perfetto trace config is empty, aborting"); - return false; - } - - char subscriptionId[25]; - char alertId[25]; - char configId[25]; - char configUid[25]; - snprintf(subscriptionId, sizeof(subscriptionId), "%" PRId64, subscription_id); - snprintf(alertId, sizeof(alertId), "%" PRId64, alert_id); - snprintf(configId, sizeof(configId), "%" PRId64, configKey.GetId()); - snprintf(configUid, sizeof(configUid), "%d", configKey.GetUid()); - - android::base::unique_fd readPipe; - android::base::unique_fd writePipe; - if (!android::base::Pipe(&readPipe, &writePipe)) { - ALOGE("pipe() failed while calling the Perfetto client: %s", strerror(errno)); - return false; - } - - pid_t pid = fork(); - if (pid < 0) { - ALOGE("fork() failed while calling the Perfetto client: %s", strerror(errno)); - return false; - } - - if (pid == 0) { - // Child process. - - // No malloc calls or library calls after this point. Remember that even - // ALOGx (aka android_printLog()) can use dynamic memory for vsprintf(). - - writePipe.reset(); // Close the write end (owned by the main process). - - // Replace stdin with |readPipe| so the main process can write into it. - if (dup2(readPipe.get(), STDIN_FILENO) < 0) _exit(1); - readPipe.reset(); - - // Replace stdout/stderr with /dev/null and close any other file - // descriptor. This is to avoid SELinux complaining about perfetto - // trying to access files accidentally left open by statsd (i.e. files - // that have been opened without the O_CLOEXEC flag). - int devNullFd = open("/dev/null", O_RDWR | O_CLOEXEC); - if (dup2(devNullFd, STDOUT_FILENO) < 0) _exit(2); - if (dup2(devNullFd, STDERR_FILENO) < 0) _exit(3); - close(devNullFd); - for (int i = 0; i < 1024; i++) { - if (i != STDIN_FILENO && i != STDOUT_FILENO && i != STDERR_FILENO) close(i); - } - - execl("/system/bin/perfetto", "perfetto", "--background", "--config", "-", "--dropbox", - kDropboxTag, "--alert-id", alertId, "--config-id", configId, "--config-uid", - configUid, "--subscription-id", subscriptionId, nullptr); - - // execl() doesn't return in case of success, if we get here something - // failed. - _exit(4); - } - - // Main process. - - readPipe.reset(); // Close the read end (owned by the child process). - - // Using fdopen() because fwrite() has the right logic to chunking write() - // over a pipe (see __sfvwrite()). - FILE* writePipeStream = android::base::Fdopen(std::move(writePipe), "wb"); - if (!writePipeStream) { - ALOGE("fdopen() failed while calling the Perfetto client: %s", strerror(errno)); - return false; - } - - const std::string& cfgProto = config.trace_config(); - size_t bytesWritten = fwrite(cfgProto.data(), 1, cfgProto.size(), writePipeStream); - fclose(writePipeStream); - if (bytesWritten != cfgProto.size() || cfgProto.size() == 0) { - ALOGE("fwrite() failed (ret: %zd) while calling the Perfetto client: %s", bytesWritten, - strerror(errno)); - return false; - } - - // This does NOT wait for the full duration of the trace. It just waits until - // the process has read the config from stdin and detached. - int childStatus = 0; - waitpid(pid, &childStatus, 0); - if (!WIFEXITED(childStatus) || WEXITSTATUS(childStatus) != 0) { - ALOGE("Child process failed (0x%x) while calling the Perfetto client", childStatus); - return false; - } - - VLOG("CollectPerfettoTraceAndUploadToDropbox() succeeded"); - return true; -} - -} // namespace statsd -} // namespace os -} // namespace android |