mirror of https://gitee.com/bigwinds/arangodb
added process utils
This commit is contained in:
Frank Celler
parent
e8e7758409
commit
2645697680
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////////////////////////////////////////////////////////////////////////////////
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/// @brief collection of process functions
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2011 triagens GmbH, Cologne, Germany
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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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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Esteban Lombeyda
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/// @author Copyright 2011, triagens GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "process-utils.h"
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#include <BasicsC/common.h>
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#include <BasicsC/threads.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdint.h>
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// -----------------------------------------------------------------------------
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// --SECTION-- private types
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup SystemProcess
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief contains all data documented by "proc"
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///
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/// @see man 5 proc for the state of a process
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////////////////////////////////////////////////////////////////////////////////
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#ifdef TRI_HAVE_LINUX_PROC
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typedef struct process_state_s {
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pid_t pid;
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/* size was choosen arbitrary */
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char comm[128];
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char state;
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int ppid;
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int pgrp;
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int session;
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int tty_nr;
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int tpgid;
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unsigned flags;
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/* lu */
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unsigned long minflt;
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unsigned long cminflt;
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unsigned long majflt;
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unsigned long cmajflt;
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unsigned long utime;
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unsigned long stime;
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unsigned long cutime;
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/* ld */
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long cstime;
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long priority;
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long nice;
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long num_threads;
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long itrealvalue;
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/* llu */
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long long unsigned int starttime;
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/* lu */
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unsigned long vsize;
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/* ld */
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long rss;
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/* lu */
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unsigned long rsslim;
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unsigned long startcode;
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unsigned long endcode;
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unsigned long startstack;
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unsigned long kstkesp;
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unsigned long signal;
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/* obsolete lu*/
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unsigned long blocked;
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unsigned long sigignore;
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unsigned int sigcatch;
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unsigned long wchan;
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/* no maintained lu */
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unsigned long nswap;
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unsigned long cnswap;
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/* d */
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int exit_signal;
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int processor;
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/* u */
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unsigned rt_priority;
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unsigned policy;
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/* llu */
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long long unsigned int delayacct_blkio_ticks;
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/* lu */
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unsigned long guest_time;
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/* ld */
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long cguest_time;
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}
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process_state_t;
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup SystemProcess
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns the size of the current process
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////////////////////////////////////////////////////////////////////////////////
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unsigned int TRI_ProcessSizeSelf () {
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return TRI_ProcessSize(TRI_CurrentProcessId());
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief gets the size of an process
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////////////////////////////////////////////////////////////////////////////////
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#ifdef TRI_HAVE_LINUX_PROC
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unsigned int TRI_ProcessSize (TRI_pid_t pid) {
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char fn[1024];
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int fd;
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unsigned int vsize;
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snprintf(fn, sizeof(fn), "/proc/%d/stat", pid);
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fd = open(fn, O_RDONLY);
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vsize = 0;
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if (fd > 0) {
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char str[1024];
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process_state_t st;
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read(fd, str, 1024);
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close(fd);
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sscanf(str, "%d %s %c %d %d %d %d %d %u %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %llu %lu", &st.pid,
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(char*) &st.comm, &st.state, &st.ppid, &st.pgrp, &st.session, &st.tty_nr, &st.tpgid,
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&st.flags, &st.minflt, &st.cminflt, &st.majflt, &st.cmajflt, &st.utime, &st.stime,
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&st.cutime, &st.cstime, &st.priority, &st.nice, &st.num_threads, &st.itrealvalue,
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&st.starttime, &st.vsize);
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vsize = st.vsize;
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}
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return vsize;
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}
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#else
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unsigned int TRI_ProcessSize (TRI_pid_t pid) {
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return 0;
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}
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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@ -0,0 +1,90 @@
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////////////////////////////////////////////////////////////////////////////////
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/// @brief collection of process functions
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2011 triagens GmbH, Cologne, Germany
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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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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Esteban Lombeyda
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/// @author Copyright 2008-2011, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_JUTLAND_BASICS_PROCESS_UTILS_H
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#define TRIAGENS_JUTLAND_BASICS_PROCESS_UTILS_H 1
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#include <BasicsC/common.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- public constants
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup SystemProcess
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief invalid process
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////////////////////////////////////////////////////////////////////////////////
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#define INVALID_PROCESS (0)
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup SystemProcess
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns the size of the current process
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////////////////////////////////////////////////////////////////////////////////
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unsigned int TRI_ProcessSizeSelf (void);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief returns the size of the process given its pid
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////////////////////////////////////////////////////////////////////////////////
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unsigned int TRI_ProcessSize (pid_t pid);
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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#ifdef __cplusplus
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}
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#endif
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#endif
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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