77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/*
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* Copyright 2016, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "util.h"
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#include <time.h>
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#include <string>
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#include <utility>
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#include <android-base/file.h>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include "protocol.h"
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std::vector<std::string> get_command_line(pid_t pid) {
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std::vector<std::string> result;
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std::string cmdline;
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android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid), &cmdline);
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auto it = cmdline.cbegin();
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while (it != cmdline.cend()) {
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// string::iterator is a wrapped type, not a raw char*.
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auto terminator = std::find(it, cmdline.cend(), '\0');
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result.emplace_back(it, terminator);
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it = std::find_if(terminator, cmdline.cend(), [](char c) { return c != '\0'; });
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}
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if (result.empty()) {
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result.emplace_back("<unknown>");
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}
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return result;
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}
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std::string get_process_name(pid_t pid) {
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std::string result = "<unknown>";
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android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/cmdline", pid), &result);
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// We only want the name, not the whole command line, so truncate at the first NUL.
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return result.c_str();
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}
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std::string get_thread_name(pid_t tid) {
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std::string result = "<unknown>";
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android::base::ReadFileToString(android::base::StringPrintf("/proc/%d/comm", tid), &result);
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return android::base::Trim(result);
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}
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std::string get_timestamp() {
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timespec ts;
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clock_gettime(CLOCK_REALTIME, &ts);
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tm tm;
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localtime_r(&ts.tv_sec, &tm);
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char buf[strlen("1970-01-01 00:00:00.123456789+0830") + 1];
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char* s = buf;
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size_t sz = sizeof(buf), n;
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n = strftime(s, sz, "%F %H:%M", &tm), s += n, sz -= n;
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n = snprintf(s, sz, ":%02d.%09ld", tm.tm_sec, ts.tv_nsec), s += n, sz -= n;
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n = strftime(s, sz, "%z", &tm), s += n, sz -= n;
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return buf;
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}
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