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src/java.base/macosx/native/libjava/ProcessHandleImpl_macosx.c
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rev 12414 : 8131168: Refactor ProcessHandleImpl_*.c and add implememtation for AIX
@@ -26,122 +26,40 @@
#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 <errno.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/sysctl.h>
/**
- * Implementations of ProcessHandleImpl functions for MAC OS X;
- * are NOT common to all Unix variants.
+ * Implementation of native ProcessHandleImpl functions for MAC OS X.
+ * See ProcessHandleImpl_unix.c for more details.
*/
-static void getStatInfo(JNIEnv *env, jobject jinfo, pid_t pid);
-static void getCmdlineInfo(JNIEnv *env, jobject jinfo, pid_t pid);
-
-/*
- * Common Unix function to lookup the uid and return the user name.
- */
-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;
-
-/**************************************************************
- * 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;"));
- clock_ticks_per_second = sysconf(_SC_CLK_TCK);
-}
-
-/*
- * 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) {
- pid_t pid = (pid_t) jpid;
- pid_t ppid = -1;
-
- if (pid == getpid()) {
- ppid = getppid();
- } else {
- const pid_t pid = (pid_t) jpid;
- struct kinfo_proc kp;
- size_t bufSize = sizeof kp;
-
- // Read the process info for the specific pid
- int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, pid};
- if (sysctl(mib, 4, &kp, &bufSize, NULL, 0) < 0) {
- JNU_ThrowByNameWithLastError(env,
- "java/lang/RuntimeException", "sysctl failed");
- return -1;
- }
- ppid = (bufSize > 0 && kp.kp_proc.p_pid == pid) ? kp.kp_eproc.e_ppid : -1;
- }
- return (jlong) ppid;
-}
+void os_init(JNIEnv *env, jclass clazz) {}
/*
* Returns the children of the requested pid and optionally each parent.
*
- * Class: java_lang_ProcessHandleImpl
- * Method: getProcessPids0
- * Signature: (J[J[J)I
- *
* Use sysctl to accumulate any process whose parent pid is zero or matches.
* The resulting pids are stored into the array of longs.
* The number of pids is returned if they all fit.
* If the parentArray is non-null, store the parent pid.
* If the array is too short, excess pids are not stored and
* the desired length is returned.
*/
-JNIEXPORT jint JNICALL Java_java_lang_ProcessHandleImpl_getProcessPids0
-(JNIEnv *env, jclass clazz, jlong jpid,
- jlongArray jarray, jlongArray jparentArray)
-{
+jint os_getChildren(JNIEnv *env, jlong jpid,
+ jlongArray jarray, jlongArray jparentArray) {
size_t count = 0;
jlong* pids = NULL;
jlong* ppids = NULL;
size_t parentArraySize = 0;
size_t arraySize = 0;
@@ -225,33 +143,31 @@
free(buffer);
// 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
- * Method: info0
- * Signature: (J)I
+ * Returns the parent pid of a given pid, or -1 if not found
*/
-JNIEXPORT void JNICALL Java_java_lang_ProcessHandleImpl_00024Info_info0
- (JNIEnv *env, jobject jinfo, jlong jpid) {
- pid_t pid = (pid_t) jpid;
- getStatInfo(env, jinfo, pid);
- getCmdlineInfo(env, jinfo, pid);
+pid_t os_parentPid(JNIEnv *env, pid_t pid) {
+ struct kinfo_proc kp;
+ size_t bufSize = sizeof kp;
+
+ // Read the process info for the specific pid
+ int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, pid};
+ if (sysctl(mib, 4, &kp, &bufSize, NULL, 0) < 0) {
+ JNU_ThrowByNameWithLastError(env,
+ "java/lang/RuntimeException", "sysctl failed");
+ return -1;
+ }
+ return (bufSize > 0 && kp.kp_proc.p_pid == pid) ? kp.kp_eproc.e_ppid : (pid_t)-1;
}
/**
- * Read /proc/<pid>/stat and fill in the fields of the Info object.
- * The executable name, plus the user, system, and start times are gathered.
+ * Use sysctl to fill in the user name and cpu time fields of the Info object.
*/
-static void getStatInfo(JNIEnv *env, jobject jinfo, pid_t jpid) {
+void os_getStatInfo(JNIEnv *env, jobject jinfo, pid_t jpid) {
jlong totalTime; // nanoseconds
unsigned long long startTime; // microseconds
const pid_t pid = (pid_t) jpid;
struct kinfo_proc kp;
@@ -270,11 +186,11 @@
return;
}
// Convert the UID to the username
jstring name = NULL;
- CHECK_NULL((name = uidToUser(env, kp.kp_eproc.e_ucred.cr_uid)));
+ CHECK_NULL((name = unix_uidToUser(env, kp.kp_eproc.e_ucred.cr_uid)));
(*env)->SetObjectField(env, jinfo, ProcessHandleImpl_Info_userID, name);
JNU_CHECK_EXCEPTION(env);
startTime = kp.kp_proc.p_starttime.tv_sec * 1000 +
kp.kp_proc.p_starttime.tv_usec / 1000;
@@ -296,48 +212,14 @@
JNU_CHECK_EXCEPTION(env);
}
}
/**
- * Construct the argument array by parsing the arguments from the sequence of arguments.
- */
-static int fillArgArray(JNIEnv *env, jobject jinfo, int nargs,
- const char *cp, const char *argsEnd) {
- jstring str = NULL;
- jobject argsArray;
- int i;
-
- if (nargs < 1) {
- return 0;
- }
- // Create a String array for nargs-1 elements
- CHECK_NULL_RETURN((argsArray = (*env)->NewObjectArray(env,
- nargs - 1, JNU_ClassString(env), NULL)), -1);
-
- for (i = 0; i < nargs - 1; i++) {
- // skip to the next argument; omits arg[0]
- cp += strnlen(cp, (argsEnd - cp)) + 1;
-
- if (cp > argsEnd || *cp == '\0') {
- return -2; // Off the end pointer or an empty argument is an error
- }
-
- CHECK_NULL_RETURN((str = JNU_NewStringPlatform(env, cp)), -1);
-
- (*env)->SetObjectArrayElement(env, argsArray, i, str);
- JNU_CHECK_EXCEPTION_RETURN(env, -3);
- }
- (*env)->SetObjectField(env, jinfo, ProcessHandleImpl_Info_argumentsID, argsArray);
- JNU_CHECK_EXCEPTION_RETURN(env, -4);
- return 0;
-}
-
-/**
* Retrieve the command and arguments for the process and store them
* into the Info object.
*/
-static void getCmdlineInfo(JNIEnv *env, jobject jinfo, pid_t pid) {
+void os_getCmdlineInfo(JNIEnv *env, jobject jinfo, pid_t pid) {
int mib[3], maxargs, nargs, i;
size_t size;
char *args, *cp, *sp, *np;
// Get the maximum size of the arguments
@@ -357,11 +239,11 @@
return;
}
do { // a block to break out of on error
char *argsEnd;
- jstring str = NULL;
+ jstring cmdexe = NULL;
mib[0] = CTL_KERN;
mib[1] = KERN_PROCARGS2;
mib[2] = pid;
size = (size_t) maxargs;
@@ -376,26 +258,22 @@
cp = &args[sizeof(nargs)]; // Strings start after nargs
argsEnd = &args[size];
// Store the command executable path
- if ((str = JNU_NewStringPlatform(env, cp)) == NULL) {
- break;
- }
- (*env)->SetObjectField(env, jinfo, ProcessHandleImpl_Info_commandID, str);
- if ((*env)->ExceptionCheck(env)) {
+ if ((cmdexe = JNU_NewStringPlatform(env, cp)) == NULL) {
break;
}
// Skip trailing nulls after the executable path
for (cp = cp + strnlen(cp, argsEnd - cp); cp < argsEnd; cp++) {
if (*cp != '\0') {
break;
}
}
- fillArgArray(env, jinfo, nargs, cp, argsEnd);
+ unix_fillArgArray(env, jinfo, nargs, cp, argsEnd, cmdexe);
} while (0);
// Free the arg buffer
free(args);
}
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