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src/java.base/solaris/native/libjava/ProcessHandleImpl_solaris.c
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rev 12532 : 8131168: Refactor ProcessHandleImpl_*.c and add implememtation for AIX
Reviewed-by: rriggs, smarks
@@ -22,370 +22,30 @@
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include "jni.h"
-#include "jni_util.h"
-#include "java_lang_ProcessHandleImpl.h"
-#include "java_lang_ProcessHandleImpl_Info.h"
+#include "ProcessHandleImpl_unix.h"
-#include <stdio.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
#include <procfs.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <limits.h>
-
-/**
- * Implementations of ProcessHandleImpl functions that are
- * NOT common to all Unix variants:
- * - getProcessPids0(pid, pidArray)
- *
- * Implementations of ProcessHandleImpl_Info
- * - totalTime, startTime
- * - Command
- * - Arguments
- */
/*
- * Signatures for internal OS specific functions.
+ * Implementation of native ProcessHandleImpl functions for Solaris.
+ * See ProcessHandleImpl_unix.c for more details.
*/
-static pid_t getStatInfo(JNIEnv *env, pid_t pid,
- jlong *totalTime, jlong* startTime,
- uid_t *uid);
-static void getCmdlineInfo(JNIEnv *env, jobject jinfo, pid_t pid);
-
-extern jstring uidToUser(JNIEnv* env, uid_t uid);
-
-/* Field id for jString 'command' in java.lang.ProcessHandle.Info */
-static jfieldID ProcessHandleImpl_Info_commandID;
-
-/* Field id for jString[] 'arguments' in java.lang.ProcessHandle.Info */
-static jfieldID ProcessHandleImpl_Info_argumentsID;
-
-/* Field id for jlong 'totalTime' in java.lang.ProcessHandle.Info */
-static jfieldID ProcessHandleImpl_Info_totalTimeID;
-
-/* Field id for jlong 'startTime' in java.lang.ProcessHandle.Info */
-static jfieldID ProcessHandleImpl_Info_startTimeID;
-
-/* Field id for jString 'user' in java.lang.ProcessHandleImpl.Info */
-static jfieldID ProcessHandleImpl_Info_userID;
-/* static value for clock ticks per second. */
-static long clock_ticks_per_second;
+void os_initNative(JNIEnv *env, jclass clazz) {}
-/**************************************************************
- * Static method to initialize field IDs and the ticks per second rate.
- *
- * Class: java_lang_ProcessHandleImpl_Info
- * Method: initIDs
- * Signature: ()V
- */
-JNIEXPORT void JNICALL
-Java_java_lang_ProcessHandleImpl_00024Info_initIDs(JNIEnv *env, jclass clazz) {
- CHECK_NULL(ProcessHandleImpl_Info_commandID = (*env)->GetFieldID(env,
- clazz, "command", "Ljava/lang/String;"));
- CHECK_NULL(ProcessHandleImpl_Info_argumentsID = (*env)->GetFieldID(env,
- clazz, "arguments", "[Ljava/lang/String;"));
- CHECK_NULL(ProcessHandleImpl_Info_totalTimeID = (*env)->GetFieldID(env,
- clazz, "totalTime", "J"));
- CHECK_NULL(ProcessHandleImpl_Info_startTimeID = (*env)->GetFieldID(env,
- clazz, "startTime", "J"));
- CHECK_NULL(ProcessHandleImpl_Info_userID = (*env)->GetFieldID(env,
- clazz, "user", "Ljava/lang/String;"));
-}
-
-/**************************************************************
- * Static method to initialize the ticks per second rate.
- *
- * Class: java_lang_ProcessHandleImpl
- * Method: initNative
- * Signature: ()V
- */
-JNIEXPORT void JNICALL
-Java_java_lang_ProcessHandleImpl_initNative(JNIEnv *env, jclass clazz) {
- clock_ticks_per_second = sysconf(_SC_CLK_TCK);
-}
-
-/*
- * Check if a process is alive.
- * Return the start time (ms since 1970) if it is available.
- * If the start time is not available return 0.
- * If the pid is invalid, return -1.
- *
- * Class: java_lang_ProcessHandleImpl
- * Method: isAlive0
- * Signature: (J)J
- */
-JNIEXPORT jlong JNICALL
-Java_java_lang_ProcessHandleImpl_isAlive0(JNIEnv *env, jobject obj, jlong jpid) {
- pid_t pid = (pid_t) jpid;
- jlong startTime = 0L;
- jlong totalTime = 0L;
- uid_t uid = -1;
- pid_t ppid = getStatInfo(env, pid, &totalTime, &startTime, &uid);
- return (ppid < 0) ? -1 : startTime;
+jint os_getChildren(JNIEnv *env, jlong jpid, jlongArray jarray,
+ jlongArray jparentArray, jlongArray jstimesArray) {
+ return unix_getChildren(env, jpid, jarray, jparentArray, jstimesArray);
}
-/*
- * Returns the parent pid of the requested pid.
- *
- * Class: java_lang_ProcessHandleImpl
- * Method: parent0
- * Signature: (J)J
- */
-JNIEXPORT jlong JNICALL
-Java_java_lang_ProcessHandleImpl_parent0(JNIEnv *env,
- jobject obj,
- jlong jpid,
- jlong startTime) {
- pid_t pid = (pid_t) jpid;
- pid_t ppid = -1;
-
- if (pid == getpid()) {
- ppid = getppid();
- } else {
- jlong start = 0L;
- jlong total = 0L;
- uid_t uid = -1;
-
- pid_t ppid = getStatInfo(env, pid, &total, &start, &uid);
- if (start != startTime
- && start != 0
- && startTime != 0) {
- ppid = -1;
- }
- }
- return (jlong) ppid;
+pid_t os_getParentPidAndTimings(JNIEnv *env, pid_t pid, jlong *total, jlong *start) {
+ return unix_getParentPidAndTimings(env, pid, total, start);
}
-/*
- * Returns the children of the requested pid and optionally each parent.
- *
- * Class: java_lang_ProcessHandleImpl
- * Method: getChildPids
- * Signature: (J[J)I
- *
- * Reads /proc and accumulates any process who parent pid matches.
- * The resulting pids are stored into the array of longs.
- * The number of pids is returned if they all fit.
- * If the array is too short, the desired length is returned.
- */
-JNIEXPORT jint JNICALL
-Java_java_lang_ProcessHandleImpl_getProcessPids0(JNIEnv *env,
- jclass clazz,
- jlong jpid,
- jlongArray jarray,
- jlongArray jparentArray,
- jlongArray jstimesArray) {
- DIR* dir;
- struct dirent* ptr;
- pid_t pid = (pid_t) jpid;
- jlong* pids = NULL;
- jlong* ppids = NULL;
- jlong* stimes = NULL;
- jsize parentArraySize = 0;
- jsize arraySize = 0;
- jsize stimesSize = 0;
- jsize count = 0;
- char procname[32];
-
- arraySize = (*env)->GetArrayLength(env, jarray);
- JNU_CHECK_EXCEPTION_RETURN(env, 0);
- if (jparentArray != NULL) {
- parentArraySize = (*env)->GetArrayLength(env, jparentArray);
- JNU_CHECK_EXCEPTION_RETURN(env, 0);
-
- if (arraySize != parentArraySize) {
- JNU_ThrowIllegalArgumentException(env, "array sizes not equal");
- return 0;
- }
- }
- if (jstimesArray != NULL) {
- stimesSize = (*env)->GetArrayLength(env, jstimesArray);
- JNU_CHECK_EXCEPTION_RETURN(env, -1);
-
- if (arraySize != stimesSize) {
- JNU_ThrowIllegalArgumentException(env, "array sizes not equal");
- return 0;
- }
- }
-
- /*
- * To locate the children we scan /proc looking for files that have a
- * positive integer as a filename.
- */
- if ((dir = opendir("/proc")) == NULL) {
- JNU_ThrowByNameWithLastError(env,
- "java/lang/Runtime", "Unable to open /proc");
- return 0;
- }
-
- do { // Block to break out of on Exception
- pids = (*env)->GetLongArrayElements(env, jarray, NULL);
- if (pids == NULL) {
- break;
- }
- if (jparentArray != NULL) {
- ppids = (*env)->GetLongArrayElements(env, jparentArray, NULL);
- if (ppids == NULL) {
- break;
- }
- }
- if (jstimesArray != NULL) {
- stimes = (*env)->GetLongArrayElements(env, jstimesArray, NULL);
- if (stimes == NULL) {
- break;
- }
- }
-
- while ((ptr = readdir(dir)) != NULL) {
- pid_t ppid = 0;
- jlong totalTime = 0L;
- jlong startTime = 0L;
- uid_t uid; // value unused
-
- /* skip files that aren't numbers */
- pid_t childpid = (pid_t) atoi(ptr->d_name);
- if ((int) childpid <= 0) {
- continue;
- }
-
- // Read /proc/pid/stat and get the parent pid, and start time
- ppid = getStatInfo(env, childpid, &totalTime, &startTime, &uid);
- if (ppid >= 0 && (pid == 0 || ppid == pid)) {
- if (count < arraySize) {
- // Only store if it fits
- pids[count] = (jlong) childpid;
-
- if (ppids != NULL) {
- // Store the parent Pid
- ppids[count] = (jlong) ppid;
- }
- if (stimes != NULL) {
- // Store the process start time
- stimes[count] = startTime;
- }
- }
- count++; // Count to tabulate size needed
- }
- }
- } while (0);
-
- if (pids != NULL) {
- (*env)->ReleaseLongArrayElements(env, jarray, pids, 0);
- }
- if (ppids != NULL) {
- (*env)->ReleaseLongArrayElements(env, jparentArray, ppids, 0);
- }
- if (stimes != NULL) {
- (*env)->ReleaseLongArrayElements(env, jstimesArray, stimes, 0);
- }
-
- closedir(dir);
- // If more pids than array had size for; count will be greater than array size
- return count;
-}
-
-/**************************************************************
- * Implementation of ProcessHandleImpl_Info native methods.
- */
-
-/*
- * Fill in the Info object from the OS information about the process.
- *
- * Class: java_lang_ProcessHandleImpl_Info
- * Method: info0
- * Signature: (J)V
- */
-JNIEXPORT void JNICALL
-Java_java_lang_ProcessHandleImpl_00024Info_info0(JNIEnv *env,
- jobject jinfo,
- jlong jpid) {
- pid_t pid = (pid_t) jpid;
- jlong startTime = 0L;
- jlong totalTime = 0L;
- uid_t uid = -1;
- pid_t ppid = getStatInfo(env, pid, &totalTime, &startTime, &uid);
-
- getCmdlineInfo(env, jinfo, pid);
-
- if (ppid > 0) {
- jstring str;
- (*env)->SetLongField(env, jinfo, ProcessHandleImpl_Info_startTimeID, startTime);
- JNU_CHECK_EXCEPTION(env);
-
- (*env)->SetLongField(env, jinfo, ProcessHandleImpl_Info_totalTimeID, totalTime);
- JNU_CHECK_EXCEPTION(env);
-
- CHECK_NULL((str = uidToUser(env, uid)));
- (*env)->SetObjectField(env, jinfo, ProcessHandleImpl_Info_userID, str);
- JNU_CHECK_EXCEPTION(env);
- }
-}
-
-/**
- * Read /proc/<pid>/status and return the ppid, total cputime and start time.
- * Return: -1 is fail; zero is unknown; > 0 is parent pid
- */
-static pid_t getStatInfo(JNIEnv *env, pid_t pid,
- jlong *totalTime, jlong* startTime,
- uid_t* uid) {
- FILE* fp;
- psinfo_t psinfo;
- char fn[32];
- int ret;
-
- /*
- * Try to open /proc/%d/status
- */
- snprintf(fn, sizeof fn, "/proc/%d/psinfo", pid);
- fp = fopen(fn, "r");
- if (fp == NULL) {
- return -1;
- }
-
- ret = fread(&psinfo, 1, (sizeof psinfo), fp);
- fclose(fp);
- if (ret < (sizeof psinfo)) {
- return -1;
- }
-
- *totalTime = psinfo.pr_time.tv_sec * 1000000000L + psinfo.pr_time.tv_nsec;
-
- *startTime = psinfo.pr_start.tv_sec * (jlong)1000 +
- psinfo.pr_start.tv_nsec / 1000000;
-
- *uid = psinfo.pr_uid;
-
- return (pid_t) psinfo.pr_ppid;
-}
-
-static void getCmdlineInfo(JNIEnv *env, jobject jinfo, pid_t pid) {
- char fn[32];
- char exePath[PATH_MAX];
- jstring str = NULL;
- int ret;
-
- /*
- * The path to the executable command is the link in /proc/<pid>/paths/a.out.
- */
- snprintf(fn, sizeof fn, "/proc/%d/path/a.out", pid);
- if ((ret = readlink(fn, exePath, PATH_MAX - 1)) < 0) {
- return;
- }
-
- // null terminate and create String to store for command
- exePath[ret] = '\0';
- CHECK_NULL(str = JNU_NewStringPlatform(env, exePath));
- (*env)->SetObjectField(env, jinfo, ProcessHandleImpl_Info_commandID, str);
- JNU_CHECK_EXCEPTION(env);
+void os_getCmdlineAndUserInfo(JNIEnv *env, jobject jinfo, pid_t pid) {
+ unix_getCmdlineAndUserInfo(env, jinfo, pid);
}
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