1 files changed, 0 insertions, 163 deletions
diff --git a/simpleperf/ProbeEvents.cpp b/simpleperf/ProbeEvents.cpp
deleted file mode 100644
index 636923f9..00000000
--- a/simpleperf/ProbeEvents.cpp
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (C) 2020 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.
- */
-
-#include "ProbeEvents.h"
-
-#include <inttypes.h>
-
-#include <memory>
-#include <regex>
-#include <string>
-
-#include <android-base/file.h>
-#include <android-base/logging.h>
-#include <android-base/parseint.h>
-#include <android-base/stringprintf.h>
-#include <android-base/strings.h>
-#include <android-base/unique_fd.h>
-
-#include "environment.h"
-#include "event_type.h"
-#include "utils.h"
-
-namespace simpleperf {
-
-using android::base::ParseInt;
-using android::base::ParseUint;
-using android::base::Split;
-using android::base::StringPrintf;
-using android::base::unique_fd;
-using android::base::WriteStringToFd;
-
-static const std::string kKprobeEventPrefix = "kprobes:";
-
-bool ProbeEvents::ParseKprobeEventName(const std::string& kprobe_cmd, ProbeEvent* event) {
-  // kprobe_cmd is in formats described in <kernel>/Documentation/trace/kprobetrace.rst:
-  //   p[:[GRP/]EVENT] [MOD:]SYM[+offs]|MEMADDR [FETCHARGS]
-  //   r[MAXACTIVE][:[GRP/]EVENT] [MOD:]SYM[+offs] [FETCHARGS]
-  std::vector<std::string> args = Split(kprobe_cmd, " ");
-  if (args.size() < 2) {
-    return false;
-  }
-
-  // Parse given name.
-  event->group_name = "kprobes";
-  std::regex name_reg(R"(:([a-zA-Z_][\w_]*/)?([a-zA-Z_][\w_]*))");
-  std::smatch matches;
-  if (std::regex_search(args[0], matches, name_reg)) {
-    if (matches[1].length() > 0) {
-      event->group_name = matches[1].str();
-      event->group_name.pop_back();
-    }
-    event->event_name = matches[2].str();
-    return true;
-  }
-
-  // Generate name from MEMADDR.
-  char probe_type = args[0][0];
-  uint64_t kaddr;
-  if (ParseUint(args[1], &kaddr)) {
-    event->event_name = StringPrintf("%c_0x%" PRIx64, probe_type, kaddr);
-    return true;
-  }
-
-  // Generate name from [MOD:]SYM[+offs].
-  std::string symbol;
-  int64_t offset;
-  size_t split_pos = args[1].find_first_of("+-");
-  if (split_pos == std::string::npos) {
-    symbol = args[1];
-    offset = 0;
-  } else {
-    symbol = args[1].substr(0, split_pos);
-    if (!ParseInt(args[1].substr(split_pos), &offset) || offset < 0) {
-      return false;
-    }
-  }
-  std::string s = StringPrintf("%c_%s_%" PRId64, probe_type, symbol.c_str(), offset);
-  event->event_name = std::regex_replace(s, std::regex(R"(\.|:)"), "_");
-  return true;
-}
-
-bool ProbeEvents::IsKprobeSupported() {
-  if (!kprobe_control_path_.has_value()) {
-    kprobe_control_path_ = "";
-    if (const char* tracefs_dir = GetTraceFsDir(); tracefs_dir != nullptr) {
-      std::string path = std::string(tracefs_dir) + "/kprobe_events";
-      if (IsRegularFile(path)) {
-        kprobe_control_path_ = std::move(path);
-      }
-    }
-  }
-  return !kprobe_control_path_.value().empty();
-}
-
-bool ProbeEvents::AddKprobe(const std::string& kprobe_cmd) {
-  ProbeEvent event;
-  if (!ParseKprobeEventName(kprobe_cmd, &event)) {
-    LOG(ERROR) << "invalid kprobe cmd: " << kprobe_cmd;
-    return false;
-  }
-  if (!WriteKprobeCmd(kprobe_cmd)) {
-    return false;
-  }
-  kprobe_events_.emplace_back(std::move(event));
-  return true;
-}
-
-bool ProbeEvents::IsProbeEvent(const std::string& event_name) {
-  return android::base::StartsWith(event_name, kKprobeEventPrefix);
-}
-
-bool ProbeEvents::CreateProbeEventIfNotExist(const std::string& event_name) {
-  if (EventTypeManager::Instance().FindType(event_name) != nullptr) {
-    return true;
-  }
-  std::string function_name = event_name.substr(kKprobeEventPrefix.size());
-  return AddKprobe(StringPrintf("p:%s %s", function_name.c_str(), function_name.c_str()));
-}
-
-void ProbeEvents::Clear() {
-  for (const auto& kprobe_event : kprobe_events_) {
-    if (!WriteKprobeCmd("-:" + kprobe_event.group_name + "/" + kprobe_event.event_name)) {
-      LOG(WARNING) << "failed to delete kprobe event " << kprobe_event.group_name << ":"
-                   << kprobe_event.event_name;
-    }
-    EventTypeManager::Instance().RemoveProbeType(kprobe_event.group_name + ":" +
-                                                 kprobe_event.event_name);
-  }
-  kprobe_events_.clear();
-}
-
-bool ProbeEvents::WriteKprobeCmd(const std::string& kprobe_cmd) {
-  if (!IsKprobeSupported()) {
-    LOG(ERROR) << "kprobe events isn't supported by the kernel.";
-    return false;
-  }
-  const std::string& path = kprobe_control_path_.value();
-  unique_fd fd(open(path.c_str(), O_APPEND | O_WRONLY | O_CLOEXEC));
-  if (!fd.ok()) {
-    PLOG(ERROR) << "failed to open " << path;
-    return false;
-  }
-  if (!WriteStringToFd(kprobe_cmd, fd)) {
-    PLOG(ERROR) << "failed to write '" << kprobe_cmd << "' to " << path;
-    return false;
-  }
-  return true;
-}
-
-}  // namespace simpleperf