author | coleenp |
Mon, 19 Apr 2010 18:58:31 -0400 | |
changeset 5410 | c4b979417733 |
parent 5237 | aab592fd4f44 |
child 5547 | f4b087cbb361 |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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* |
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*/ |
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# include "incls/_precompiled.incl" |
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# include "incls/_attachListener_solaris.cpp.incl" |
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#include <door.h> |
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#include <string.h> |
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#include <signal.h> |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/stat.h> |
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// stropts.h uses STR in stream ioctl defines |
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#undef STR |
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#include <stropts.h> |
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#undef STR |
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#define STR(a) #a |
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// The attach mechanism on Solaris is implemented using the Doors IPC |
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// mechanism. The first tool to attempt to attach causes the attach |
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// listener thread to startup. This thread creats a door that is |
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// associated with a function that enqueues an operation to the attach |
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// listener. The door is attached to a file in the file system so that |
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// client (tools) can locate it. To enqueue an operation to the VM the |
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// client calls through the door which invokes the enqueue function in |
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// this process. The credentials of the client are checked and if the |
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// effective uid matches this process then the operation is enqueued. |
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// When an operation completes the attach listener is required to send the |
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// operation result and any result data to the client. In this implementation |
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// the result is returned via a UNIX domain socket. A pair of connected |
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// sockets (socketpair) is created in the enqueue function and the file |
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// descriptor for one of the sockets is returned to the client as the |
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// return from the door call. The other end is retained in this process. |
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// When the operation completes the result is sent to the client and |
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// the socket is closed. |
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// forward reference |
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class SolarisAttachOperation; |
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class SolarisAttachListener: AllStatic { |
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private: |
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// the path to which we attach the door file descriptor |
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static char _door_path[PATH_MAX+1]; |
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static volatile bool _has_door_path; |
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// door descriptor returned by door_create |
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static int _door_descriptor; |
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static void set_door_path(char* path) { |
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if (path == NULL) { |
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_has_door_path = false; |
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} else { |
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strncpy(_door_path, path, PATH_MAX); |
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_door_path[PATH_MAX] = '\0'; // ensure it's nul terminated |
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_has_door_path = true; |
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} |
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} |
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static void set_door_descriptor(int dd) { _door_descriptor = dd; } |
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// mutex to protect operation list |
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static mutex_t _mutex; |
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// semaphore to wakeup listener thread |
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static sema_t _wakeup; |
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static mutex_t* mutex() { return &_mutex; } |
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static sema_t* wakeup() { return &_wakeup; } |
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// enqueued operation list |
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static SolarisAttachOperation* _head; |
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static SolarisAttachOperation* _tail; |
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static SolarisAttachOperation* head() { return _head; } |
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static void set_head(SolarisAttachOperation* head) { _head = head; } |
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static SolarisAttachOperation* tail() { return _tail; } |
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static void set_tail(SolarisAttachOperation* tail) { _tail = tail; } |
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// create the door |
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static int create_door(); |
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public: |
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enum { |
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ATTACH_PROTOCOL_VER = 1 // protocol version |
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}; |
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enum { |
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ATTACH_ERROR_BADREQUEST = 100, // error code returned by |
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ATTACH_ERROR_BADVERSION = 101, // the door call |
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ATTACH_ERROR_RESOURCE = 102, |
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ATTACH_ERROR_INTERNAL = 103, |
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ATTACH_ERROR_DENIED = 104 |
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}; |
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// initialize the listener |
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static int init(); |
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static bool has_door_path() { return _has_door_path; } |
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static char* door_path() { return _door_path; } |
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static int door_descriptor() { return _door_descriptor; } |
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// enqueue an operation |
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static void enqueue(SolarisAttachOperation* op); |
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// dequeue an operation |
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static SolarisAttachOperation* dequeue(); |
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}; |
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// SolarisAttachOperation is an AttachOperation that additionally encapsulates |
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// a socket connection to the requesting client/tool. SolarisAttachOperation |
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// can additionally be held in a linked list. |
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class SolarisAttachOperation: public AttachOperation { |
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private: |
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friend class SolarisAttachListener; |
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// connection to client |
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int _socket; |
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// linked list support |
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SolarisAttachOperation* _next; |
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SolarisAttachOperation* next() { return _next; } |
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void set_next(SolarisAttachOperation* next) { _next = next; } |
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public: |
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void complete(jint res, bufferedStream* st); |
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int socket() const { return _socket; } |
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void set_socket(int s) { _socket = s; } |
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SolarisAttachOperation(char* name) : AttachOperation(name) { |
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set_socket(-1); |
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set_next(NULL); |
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} |
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}; |
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// statics |
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char SolarisAttachListener::_door_path[PATH_MAX+1]; |
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volatile bool SolarisAttachListener::_has_door_path; |
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int SolarisAttachListener::_door_descriptor = -1; |
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mutex_t SolarisAttachListener::_mutex; |
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sema_t SolarisAttachListener::_wakeup; |
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SolarisAttachOperation* SolarisAttachListener::_head = NULL; |
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SolarisAttachOperation* SolarisAttachListener::_tail = NULL; |
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// Supporting class to help split a buffer into individual components |
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class ArgumentIterator : public StackObj { |
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private: |
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char* _pos; |
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char* _end; |
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public: |
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ArgumentIterator(char* arg_buffer, size_t arg_size) { |
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_pos = arg_buffer; |
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_end = _pos + arg_size - 1; |
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} |
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char* next() { |
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if (*_pos == '\0') { |
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return NULL; |
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} |
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char* res = _pos; |
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char* next_pos = strchr(_pos, '\0'); |
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if (next_pos < _end) { |
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next_pos++; |
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} |
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_pos = next_pos; |
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return res; |
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} |
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}; |
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// Calls from the door function to check that the client credentials |
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// match this process. Returns 0 if credentials okay, otherwise -1. |
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static int check_credentials() { |
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door_cred_t cred_info; |
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// get client credentials |
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if (door_cred(&cred_info) == -1) { |
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return -1; // unable to get them |
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} |
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// get our euid/eguid (probably could cache these) |
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uid_t euid = geteuid(); |
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gid_t egid = getegid(); |
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// check that the effective uid/gid matches - discuss this with Jeff. |
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if (cred_info.dc_euid == euid && cred_info.dc_egid == egid) { |
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return 0; // okay |
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} else { |
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return -1; // denied |
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} |
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} |
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// Parses the argument buffer to create an AttachOperation that we should |
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// enqueue to the attach listener. |
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// The buffer is expected to be formatted as follows: |
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// <ver>0<cmd>0<arg>0<arg>0<arg>0 |
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// where <ver> is the version number (must be "1"), <cmd> is the command |
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// name ("load, "datadump", ...) and <arg> is an argument. |
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// |
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static SolarisAttachOperation* create_operation(char* argp, size_t arg_size, int* err) { |
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// assume bad request until parsed |
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*err = SolarisAttachListener::ATTACH_ERROR_BADREQUEST; |
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if (arg_size < 2 || argp[arg_size-1] != '\0') { |
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return NULL; // no ver or not null terminated |
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} |
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// Use supporting class to iterate over the buffer |
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ArgumentIterator args(argp, arg_size); |
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// First check the protocol version |
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char* ver = args.next(); |
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if (ver == NULL) { |
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return NULL; |
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} |
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if (atoi(ver) != SolarisAttachListener::ATTACH_PROTOCOL_VER) { |
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*err = SolarisAttachListener::ATTACH_ERROR_BADVERSION; |
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return NULL; |
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} |
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// Get command name and create the operation |
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char* name = args.next(); |
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if (name == NULL || strlen(name) > AttachOperation::name_length_max) { |
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return NULL; |
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} |
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SolarisAttachOperation* op = new SolarisAttachOperation(name); |
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// Iterate over the arguments |
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for (int i=0; i<AttachOperation::arg_count_max; i++) { |
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char* arg = args.next(); |
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if (arg == NULL) { |
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op->set_arg(i, NULL); |
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} else { |
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if (strlen(arg) > AttachOperation::arg_length_max) { |
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delete op; |
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return NULL; |
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} |
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op->set_arg(i, arg); |
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} |
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} |
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// return operation |
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*err = 0; |
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return op; |
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} |
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// create special operation to indicate all clients have detached |
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static SolarisAttachOperation* create_detachall_operation() { |
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return new SolarisAttachOperation(AttachOperation::detachall_operation_name()); |
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} |
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// This is door function which the client executes via a door_call. |
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extern "C" { |
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static void enqueue_proc(void* cookie, char* argp, size_t arg_size, |
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door_desc_t* dt, uint_t n_desc) |
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{ |
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int return_fd = -1; |
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SolarisAttachOperation* op = NULL; |
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// no listener |
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jint res = 0; |
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if (!AttachListener::is_initialized()) { |
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// how did we get here? |
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debug_only(warning("door_call when not enabled")); |
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res = (jint)SolarisAttachListener::ATTACH_ERROR_INTERNAL; |
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} |
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// check client credentials |
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if (res == 0) { |
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if (check_credentials() != 0) { |
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res = (jint)SolarisAttachListener::ATTACH_ERROR_DENIED; |
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} |
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} |
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// if we are stopped at ShowMessageBoxOnError then maybe we can |
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// load a diagnostic library |
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if (res == 0 && is_error_reported()) { |
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if (ShowMessageBoxOnError) { |
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// TBD - support loading of diagnostic library here |
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} |
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// can't enqueue operation after fatal error |
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res = (jint)SolarisAttachListener::ATTACH_ERROR_RESOURCE; |
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} |
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// create the operation |
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if (res == 0) { |
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int err; |
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op = create_operation(argp, arg_size, &err); |
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res = (op == NULL) ? (jint)err : 0; |
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} |
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// create a pair of connected sockets. Store the file descriptor |
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// for one end in the operation and enqueue the operation. The |
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// file descriptor for the other end wil be returned to the client. |
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if (res == 0) { |
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int s[2]; |
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if (socketpair(PF_UNIX, SOCK_STREAM, 0, s) < 0) { |
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delete op; |
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res = (jint)SolarisAttachListener::ATTACH_ERROR_RESOURCE; |
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} else { |
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op->set_socket(s[0]); |
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return_fd = s[1]; |
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SolarisAttachListener::enqueue(op); |
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} |
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} |
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// Return 0 (success) + file descriptor, or non-0 (error) |
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if (res == 0) { |
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door_desc_t desc; |
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desc.d_attributes = DOOR_DESCRIPTOR; |
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desc.d_data.d_desc.d_descriptor = return_fd; |
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door_return((char*)&res, sizeof(res), &desc, 1); |
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} else { |
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door_return((char*)&res, sizeof(res), NULL, 0); |
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} |
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} |
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} |
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344 |
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345 |
// atexit hook to detach the door and remove the file |
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extern "C" { |
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347 |
static void listener_cleanup() { |
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static int cleanup_done; |
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if (!cleanup_done) { |
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350 |
cleanup_done = 1; |
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int dd = SolarisAttachListener::door_descriptor(); |
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if (dd >= 0) { |
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::close(dd); |
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} |
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if (SolarisAttachListener::has_door_path()) { |
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356 |
char* path = SolarisAttachListener::door_path(); |
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::fdetach(path); |
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::unlink(path); |
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} |
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360 |
} |
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361 |
} |
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362 |
} |
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363 |
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364 |
// Create the door |
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365 |
int SolarisAttachListener::create_door() { |
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366 |
char door_path[PATH_MAX+1]; |
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int fd, res; |
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368 |
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369 |
// register exit function |
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370 |
::atexit(listener_cleanup); |
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371 |
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372 |
// create the door descriptor |
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373 |
int dd = ::door_create(enqueue_proc, NULL, 0); |
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374 |
if (dd < 0) { |
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375 |
return -1; |
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} |
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377 |
||
5237
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5089
diff
changeset
|
378 |
snprintf(door_path, sizeof(door_path), "%s/.java_pid%d", |
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5089
diff
changeset
|
379 |
os::get_temp_directory(), os::current_process_id()); |
1 | 380 |
RESTARTABLE(::creat(door_path, S_IRUSR | S_IWUSR), fd); |
381 |
||
382 |
if (fd == -1) { |
|
383 |
debug_only(warning("attempt to create %s failed", door_path)); |
|
384 |
return -1; |
|
385 |
} |
|
386 |
assert(fd >= 0, "bad file descriptor"); |
|
387 |
set_door_path(door_path); |
|
388 |
RESTARTABLE(::close(fd), res); |
|
389 |
||
390 |
// attach the door descriptor to the file |
|
391 |
if ((res = ::fattach(dd, door_path)) == -1) { |
|
392 |
// if busy then detach and try again |
|
393 |
if (errno == EBUSY) { |
|
394 |
::fdetach(door_path); |
|
395 |
res = ::fattach(dd, door_path); |
|
396 |
} |
|
397 |
if (res == -1) { |
|
398 |
::door_revoke(dd); |
|
399 |
dd = -1; |
|
400 |
} |
|
401 |
} |
|
402 |
if (dd >= 0) { |
|
403 |
set_door_descriptor(dd); |
|
404 |
} else { |
|
405 |
// unable to create door or attach it to the file |
|
406 |
::unlink(door_path); |
|
407 |
set_door_path(NULL); |
|
408 |
return -1; |
|
409 |
} |
|
410 |
||
411 |
return 0; |
|
412 |
} |
|
413 |
||
414 |
// Initialization - create the door, locks, and other initialization |
|
415 |
int SolarisAttachListener::init() { |
|
416 |
if (create_door()) { |
|
417 |
return -1; |
|
418 |
} |
|
419 |
||
420 |
int status = os::Solaris::mutex_init(&_mutex); |
|
421 |
assert_status(status==0, status, "mutex_init"); |
|
422 |
||
423 |
status = ::sema_init(&_wakeup, 0, NULL, NULL); |
|
424 |
assert_status(status==0, status, "sema_init"); |
|
425 |
||
426 |
set_head(NULL); |
|
427 |
set_tail(NULL); |
|
428 |
||
429 |
return 0; |
|
430 |
} |
|
431 |
||
432 |
// Dequeue an operation |
|
433 |
SolarisAttachOperation* SolarisAttachListener::dequeue() { |
|
434 |
for (;;) { |
|
435 |
int res; |
|
436 |
||
437 |
// wait for somebody to enqueue something |
|
438 |
while ((res = ::sema_wait(wakeup())) == EINTR) |
|
439 |
; |
|
440 |
if (res) { |
|
441 |
warning("sema_wait failed: %s", strerror(res)); |
|
442 |
return NULL; |
|
443 |
} |
|
444 |
||
445 |
// lock the list |
|
446 |
res = os::Solaris::mutex_lock(mutex()); |
|
447 |
assert(res == 0, "mutex_lock failed"); |
|
448 |
||
449 |
// remove the head of the list |
|
450 |
SolarisAttachOperation* op = head(); |
|
451 |
if (op != NULL) { |
|
452 |
set_head(op->next()); |
|
453 |
if (head() == NULL) { |
|
454 |
set_tail(NULL); |
|
455 |
} |
|
456 |
} |
|
457 |
||
458 |
// unlock |
|
459 |
os::Solaris::mutex_unlock(mutex()); |
|
460 |
||
461 |
// if we got an operation when return it. |
|
462 |
if (op != NULL) { |
|
463 |
return op; |
|
464 |
} |
|
465 |
} |
|
466 |
} |
|
467 |
||
468 |
// Enqueue an operation |
|
469 |
void SolarisAttachListener::enqueue(SolarisAttachOperation* op) { |
|
470 |
// lock list |
|
471 |
int res = os::Solaris::mutex_lock(mutex()); |
|
472 |
assert(res == 0, "mutex_lock failed"); |
|
473 |
||
474 |
// enqueue at tail |
|
475 |
op->set_next(NULL); |
|
476 |
if (head() == NULL) { |
|
477 |
set_head(op); |
|
478 |
} else { |
|
479 |
tail()->set_next(op); |
|
480 |
} |
|
481 |
set_tail(op); |
|
482 |
||
483 |
// wakeup the attach listener |
|
484 |
RESTARTABLE(::sema_post(wakeup()), res); |
|
485 |
assert(res == 0, "sema_post failed"); |
|
486 |
||
487 |
// unlock |
|
488 |
os::Solaris::mutex_unlock(mutex()); |
|
489 |
} |
|
490 |
||
491 |
||
492 |
// support function - writes the (entire) buffer to a socket |
|
493 |
static int write_fully(int s, char* buf, int len) { |
|
494 |
do { |
|
495 |
int n = ::write(s, buf, len); |
|
496 |
if (n == -1) { |
|
497 |
if (errno != EINTR) return -1; |
|
498 |
} else { |
|
499 |
buf += n; |
|
500 |
len -= n; |
|
501 |
} |
|
502 |
} |
|
503 |
while (len > 0); |
|
504 |
return 0; |
|
505 |
} |
|
506 |
||
507 |
// Complete an operation by sending the operation result and any result |
|
508 |
// output to the client. At this time the socket is in blocking mode so |
|
509 |
// potentially we can block if there is a lot of data and the client is |
|
510 |
// non-responsive. For most operations this is a non-issue because the |
|
511 |
// default send buffer is sufficient to buffer everything. In the future |
|
512 |
// if there are operations that involves a very big reply then it the |
|
513 |
// socket could be made non-blocking and a timeout could be used. |
|
514 |
||
515 |
void SolarisAttachOperation::complete(jint res, bufferedStream* st) { |
|
516 |
if (this->socket() >= 0) { |
|
517 |
JavaThread* thread = JavaThread::current(); |
|
518 |
ThreadBlockInVM tbivm(thread); |
|
519 |
||
520 |
thread->set_suspend_equivalent(); |
|
521 |
// cleared by handle_special_suspend_equivalent_condition() or |
|
522 |
// java_suspend_self() via check_and_wait_while_suspended() |
|
523 |
||
524 |
// write operation result |
|
525 |
char msg[32]; |
|
526 |
sprintf(msg, "%d\n", res); |
|
527 |
int rc = write_fully(this->socket(), msg, strlen(msg)); |
|
528 |
||
529 |
// write any result data |
|
530 |
if (rc == 0) { |
|
531 |
write_fully(this->socket(), (char*) st->base(), st->size()); |
|
532 |
::shutdown(this->socket(), 2); |
|
533 |
} |
|
534 |
||
535 |
// close socket and we're done |
|
536 |
RESTARTABLE(::close(this->socket()), rc); |
|
537 |
||
538 |
// were we externally suspended while we were waiting? |
|
539 |
thread->check_and_wait_while_suspended(); |
|
540 |
} |
|
541 |
delete this; |
|
542 |
} |
|
543 |
||
544 |
||
545 |
// AttachListener functions |
|
546 |
||
547 |
AttachOperation* AttachListener::dequeue() { |
|
548 |
JavaThread* thread = JavaThread::current(); |
|
549 |
ThreadBlockInVM tbivm(thread); |
|
550 |
||
551 |
thread->set_suspend_equivalent(); |
|
552 |
// cleared by handle_special_suspend_equivalent_condition() or |
|
553 |
// java_suspend_self() via check_and_wait_while_suspended() |
|
554 |
||
555 |
AttachOperation* op = SolarisAttachListener::dequeue(); |
|
556 |
||
557 |
// were we externally suspended while we were waiting? |
|
558 |
thread->check_and_wait_while_suspended(); |
|
559 |
||
560 |
return op; |
|
561 |
} |
|
562 |
||
563 |
int AttachListener::pd_init() { |
|
564 |
JavaThread* thread = JavaThread::current(); |
|
565 |
ThreadBlockInVM tbivm(thread); |
|
566 |
||
567 |
thread->set_suspend_equivalent(); |
|
568 |
// cleared by handle_special_suspend_equivalent_condition() or |
|
569 |
// java_suspend_self() |
|
570 |
||
571 |
int ret_code = SolarisAttachListener::init(); |
|
572 |
||
573 |
// were we externally suspended while we were waiting? |
|
574 |
thread->check_and_wait_while_suspended(); |
|
575 |
||
576 |
return ret_code; |
|
577 |
} |
|
578 |
||
579 |
// Attach Listener is started lazily except in the case when |
|
580 |
// +ReduseSignalUsage is used |
|
581 |
bool AttachListener::init_at_startup() { |
|
582 |
if (ReduceSignalUsage) { |
|
583 |
return true; |
|
584 |
} else { |
|
585 |
return false; |
|
586 |
} |
|
587 |
} |
|
588 |
||
589 |
// If the file .attach_pid<pid> exists in the working directory |
|
590 |
// or /tmp then this is the trigger to start the attach mechanism |
|
591 |
bool AttachListener::is_init_trigger() { |
|
592 |
if (init_at_startup() || is_initialized()) { |
|
593 |
return false; // initialized at startup or already initialized |
|
594 |
} |
|
5410
c4b979417733
6944822: Fix for 6938627 exposes problem with hard-coded buffer sizes
coleenp
parents:
5237
diff
changeset
|
595 |
char fn[PATH_MAX+1]; |
1 | 596 |
sprintf(fn, ".attach_pid%d", os::current_process_id()); |
597 |
int ret; |
|
598 |
struct stat64 st; |
|
599 |
RESTARTABLE(::stat64(fn, &st), ret); |
|
600 |
if (ret == -1) { |
|
5237
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5089
diff
changeset
|
601 |
snprintf(fn, sizeof(fn), "%s/.attach_pid%d", |
aab592fd4f44
6938627: Make temporary directory use property java.io.tmpdir when specified
coleenp
parents:
5089
diff
changeset
|
602 |
os::get_temp_directory(), os::current_process_id()); |
1 | 603 |
RESTARTABLE(::stat64(fn, &st), ret); |
604 |
} |
|
605 |
if (ret == 0) { |
|
606 |
// simple check to avoid starting the attach mechanism when |
|
607 |
// a bogus user creates the file |
|
608 |
if (st.st_uid == geteuid()) { |
|
609 |
init(); |
|
610 |
return true; |
|
611 |
} |
|
612 |
} |
|
613 |
return false; |
|
614 |
} |
|
615 |
||
616 |
// if VM aborts then detach/cleanup |
|
617 |
void AttachListener::abort() { |
|
618 |
listener_cleanup(); |
|
619 |
} |
|
620 |
||
621 |
void AttachListener::pd_data_dump() { |
|
622 |
os::signal_notify(SIGQUIT); |
|
623 |
} |
|
624 |
||
625 |
static jint enable_dprobes(AttachOperation* op, outputStream* out) { |
|
626 |
const char* probe = op->arg(0); |
|
627 |
if (probe == NULL || probe[0] == '\0') { |
|
628 |
out->print_cr("No probe specified"); |
|
629 |
return JNI_ERR; |
|
630 |
} else { |
|
631 |
int probe_typess = atoi(probe); |
|
632 |
if (errno) { |
|
633 |
out->print_cr("invalid probe type"); |
|
634 |
return JNI_ERR; |
|
635 |
} else { |
|
636 |
DTrace::enable_dprobes(probe_typess); |
|
637 |
return JNI_OK; |
|
638 |
} |
|
639 |
} |
|
640 |
} |
|
641 |
||
642 |
// platform specific operations table |
|
643 |
static AttachOperationFunctionInfo funcs[] = { |
|
644 |
{ "enabledprobes", enable_dprobes }, |
|
645 |
{ NULL, NULL } |
|
646 |
}; |
|
647 |
||
648 |
AttachOperationFunctionInfo* AttachListener::pd_find_operation(const char* name) { |
|
649 |
int i; |
|
650 |
for (i = 0; funcs[i].name != NULL; i++) { |
|
651 |
if (strcmp(funcs[i].name, name) == 0) { |
|
652 |
return &funcs[i]; |
|
653 |
} |
|
654 |
} |
|
655 |
return NULL; |
|
656 |
} |
|
657 |
||
658 |
// Solaris specific global flag set. Currently, we support only |
|
659 |
// changing ExtendedDTraceProbes flag. |
|
660 |
jint AttachListener::pd_set_flag(AttachOperation* op, outputStream* out) { |
|
661 |
const char* name = op->arg(0); |
|
662 |
assert(name != NULL, "flag name should not be null"); |
|
663 |
bool flag = true; |
|
664 |
const char* arg1; |
|
665 |
if ((arg1 = op->arg(1)) != NULL) { |
|
666 |
flag = (atoi(arg1) != 0); |
|
667 |
if (errno) { |
|
668 |
out->print_cr("flag value has to be an integer"); |
|
669 |
return JNI_ERR; |
|
670 |
} |
|
671 |
} |
|
672 |
||
5089
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
673 |
if (strcmp(name, "ExtendedDTraceProbes") == 0) { |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
674 |
DTrace::set_extended_dprobes(flag); |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
675 |
return JNI_OK; |
1 | 676 |
} |
677 |
||
5089
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
678 |
if (strcmp(name, "DTraceMonitorProbes") == 0) { |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
679 |
DTrace::set_monitor_dprobes(flag); |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
680 |
return JNI_OK; |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
681 |
} |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
682 |
|
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
683 |
out->print_cr("flag '%s' cannot be changed", name); |
0cce506a0158
6935224: Adding new DTrace probes to work with Palantir
fparain
parents:
1
diff
changeset
|
684 |
return JNI_ERR; |
1 | 685 |
} |
686 |
||
687 |
void AttachListener::pd_detachall() { |
|
688 |
DTrace::detach_all_clients(); |
|
689 |
} |