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src/hotspot/os/bsd/perfMemory_bsd.cpp

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   1 /*
   2  * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

 574 
 575         // don't follow symbolic links for the file
 576         RESTARTABLE(::lstat(filename, &statbuf), result);
 577         if (result == OS_ERR) {
 578            FREE_C_HEAP_ARRAY(char, filename);
 579            continue;
 580         }
 581 
 582         // skip over files that are not regular files.
 583         if (!S_ISREG(statbuf.st_mode)) {
 584           FREE_C_HEAP_ARRAY(char, filename);
 585           continue;
 586         }
 587 
 588         // compare and save filename with latest creation time
 589         if (statbuf.st_size > 0 && statbuf.st_ctime > oldest_ctime) {
 590 
 591           if (statbuf.st_ctime > oldest_ctime) {
 592             char* user = strchr(dentry->d_name, '_') + 1;
 593 
 594             if (oldest_user != NULL) FREE_C_HEAP_ARRAY(char, oldest_user);
 595             oldest_user = NEW_C_HEAP_ARRAY(char, strlen(user)+1, mtInternal);
 596 
 597             strcpy(oldest_user, user);
 598             oldest_ctime = statbuf.st_ctime;
 599           }
 600         }
 601 
 602         FREE_C_HEAP_ARRAY(char, filename);
 603       }
 604     }
 605     os::closedir(subdirp);
 606     FREE_C_HEAP_ARRAY(char, usrdir_name);
 607   }
 608   os::closedir(tmpdirp);
 609 
 610   return(oldest_user);
 611 }
 612 
 613 // return the name of the user that owns the JVM indicated by the given vmid.
 614 //

   1 /*
   2  * Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *

 574 
 575         // don't follow symbolic links for the file
 576         RESTARTABLE(::lstat(filename, &statbuf), result);
 577         if (result == OS_ERR) {
 578            FREE_C_HEAP_ARRAY(char, filename);
 579            continue;
 580         }
 581 
 582         // skip over files that are not regular files.
 583         if (!S_ISREG(statbuf.st_mode)) {
 584           FREE_C_HEAP_ARRAY(char, filename);
 585           continue;
 586         }
 587 
 588         // compare and save filename with latest creation time
 589         if (statbuf.st_size > 0 && statbuf.st_ctime > oldest_ctime) {
 590 
 591           if (statbuf.st_ctime > oldest_ctime) {
 592             char* user = strchr(dentry->d_name, '_') + 1;
 593 
 594             FREE_C_HEAP_ARRAY(char, oldest_user);
 595             oldest_user = NEW_C_HEAP_ARRAY(char, strlen(user)+1, mtInternal);
 596 
 597             strcpy(oldest_user, user);
 598             oldest_ctime = statbuf.st_ctime;
 599           }
 600         }
 601 
 602         FREE_C_HEAP_ARRAY(char, filename);
 603       }
 604     }
 605     os::closedir(subdirp);
 606     FREE_C_HEAP_ARRAY(char, usrdir_name);
 607   }
 608   os::closedir(tmpdirp);
 609 
 610   return(oldest_user);
 611 }
 612 
 613 // return the name of the user that owns the JVM indicated by the given vmid.
 614 //
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