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Unified Diff: base/process/internal_aix.cc

Issue 2807463004: GN: aix port along with linux_s390x, linux_ppc64 and linux_ppc64le support. (Closed)
Patch Set: removed the changes from //base/BUILD.gn Created 3 years, 8 months ago
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Index: base/process/internal_aix.cc
diff --git a/base/process/internal_aix.cc b/base/process/internal_aix.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7f03aee379d2336e2baead4cbe12c205073675b0
--- /dev/null
+++ b/base/process/internal_aix.cc
@@ -0,0 +1,155 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/process/internal_aix.h"
+
+#include <sys/procfs.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <unistd.h>
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/files/file_util.h"
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_split.h"
+#include "base/strings/string_util.h"
+#include "base/threading/thread_restrictions.h"
+#include "base/time/time.h"
+
+// Not defined on AIX by default.
+#define NAME_MAX 255
+
+namespace base {
+namespace internalAIX {
+
+const char kProcDir[] = "/proc";
+
+const char kStatFile[] = "psinfo"; // AIX specific
+
+FilePath GetProcPidDir(pid_t pid) {
+ return FilePath(kProcDir).Append(IntToString(pid));
+}
+
+pid_t ProcDirSlotToPid(const char* d_name) {
+ int i;
+ for (i = 0; i < NAME_MAX && d_name[i]; ++i) {
+ if (!IsAsciiDigit(d_name[i])) {
+ return 0;
+ }
+ }
+ if (i == NAME_MAX)
+ return 0;
+
+ // Read the process's command line.
+ pid_t pid;
+ std::string pid_string(d_name);
+ if (!StringToInt(pid_string, &pid)) {
+ NOTREACHED();
+ return 0;
+ }
+ return pid;
+}
+
+bool ReadProcFile(const FilePath& file, struct psinfo* info) {
+ // Synchronously reading files in /proc is safe.
+ ThreadRestrictions::ScopedAllowIO allow_io;
+ int fileId;
+ if ((fileId = open(file.value().c_str(), O_RDONLY)) < 0) {
+ DLOG(WARNING) << "Failed to open " << file.MaybeAsASCII()
+ << " errno = " << errno;
+ return false;
+ }
+
+ if (read(fileId, info, sizeof(*info)) < 0) {
+ DLOG(WARNING) << "Failed to read " << file.MaybeAsASCII()
+ << " errno = " << errno;
+ return false;
+ }
+
+ return true;
+}
+
+bool ReadProcStats(pid_t pid, struct psinfo* info) {
+ FilePath stat_file = internalAIX::GetProcPidDir(pid).Append(kStatFile);
+ return ReadProcFile(stat_file, info);
+}
+
+bool ParseProcStats(struct psinfo& stats_data,
+ std::vector<std::string>* proc_stats) {
+ // The stat file is formatted as:
+ // struct psinfo
+ // see -
+ // https://www.ibm.com/support/knowledgecenter/ssw_aix_71/com.ibm.aix.files/proc.htm
+ proc_stats->clear();
+ // PID.
+ proc_stats->push_back(IntToString(stats_data.pr_pid));
+ // Process name without parentheses. // 1
+ proc_stats->push_back(stats_data.pr_fname);
+ // Process State (Not available) // 2
+ proc_stats->push_back("0");
+ // Process id of parent // 3
+ proc_stats->push_back(IntToString(stats_data.pr_ppid));
+
+ // Process group id // 4
+ proc_stats->push_back(IntToString(stats_data.pr_pgid));
+
+ return true;
+}
+
+typedef std::map<std::string, std::string> ProcStatMap;
+void ParseProcStat(const std::string& contents, ProcStatMap* output) {
+ StringPairs key_value_pairs;
+ SplitStringIntoKeyValuePairs(contents, ' ', '\n', &key_value_pairs);
+ for (size_t i = 0; i < key_value_pairs.size(); ++i) {
+ output->insert(key_value_pairs[i]);
+ }
+}
+
+int64_t GetProcStatsFieldAsInt64(const std::vector<std::string>& proc_stats,
+ ProcStatsFields field_num) {
+ DCHECK_GE(field_num, VM_PPID);
+ CHECK_LT(static_cast<size_t>(field_num), proc_stats.size());
+
+ int64_t value;
+ return StringToInt64(proc_stats[field_num], &value) ? value : 0;
+}
+
+size_t GetProcStatsFieldAsSizeT(const std::vector<std::string>& proc_stats,
+ ProcStatsFields field_num) {
+ DCHECK_GE(field_num, VM_PPID);
+ CHECK_LT(static_cast<size_t>(field_num), proc_stats.size());
+
+ size_t value;
+ return StringToSizeT(proc_stats[field_num], &value) ? value : 0;
+}
+
+int64_t ReadProcStatsAndGetFieldAsInt64(pid_t pid, ProcStatsFields field_num) {
+ struct psinfo stats_data;
+ if (!ReadProcStats(pid, &stats_data))
+ return 0;
+ std::vector<std::string> proc_stats;
+ if (!ParseProcStats(stats_data, &proc_stats))
+ return 0;
+
+ return GetProcStatsFieldAsInt64(proc_stats, field_num);
+}
+
+size_t ReadProcStatsAndGetFieldAsSizeT(pid_t pid, ProcStatsFields field_num) {
+ struct psinfo stats_data;
+ if (!ReadProcStats(pid, &stats_data))
+ return 0;
+ std::vector<std::string> proc_stats;
+ if (!ParseProcStats(stats_data, &proc_stats))
+ return 0;
+ return GetProcStatsFieldAsSizeT(proc_stats, field_num);
+}
+
+} // namespace internalAIX
+} // namespace base
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