1982 
1983   // The dump file defaults to java_pid<pid>.hprof in the current working
1984   // directory. HeapDumpPath=<file> can be used to specify an alternative
1985   // dump file name or a directory where dump file is created.
1986   if (dump_file_seq == 0) { // first time in, we initialize base_path
1987     // Calculate potentially longest base path and check if we have enough
1988     // allocated statically.
1989     const size_t total_length =
1990                       (HeapDumpPath == NULL ? 0 : strlen(HeapDumpPath)) +
1991                       strlen(os::file_separator()) + max_digit_chars +
1992                       strlen(dump_file_name) + strlen(dump_file_ext) + 1;
1993     if (total_length > sizeof(base_path)) {
1994       warning("Cannot create heap dump file.  HeapDumpPath is too long.");
1995       return;
1996     }
1997 
1998     bool use_default_filename = true;
1999     if (HeapDumpPath == NULL || HeapDumpPath[0] == '\0') {
2000       // HeapDumpPath=<file> not specified
2001     } else {
2002       strncpy(base_path, HeapDumpPath, sizeof(base_path));
2003       // check if the path is a directory (must exist)
2004       DIR* dir = os::opendir(base_path);
2005       if (dir == NULL) {
2006         use_default_filename = false;
2007       } else {
2008         // HeapDumpPath specified a directory. We append a file separator
2009         // (if needed).
2010         os::closedir(dir);
2011         size_t fs_len = strlen(os::file_separator());
2012         if (strlen(base_path) >= fs_len) {
2013           char* end = base_path;
2014           end += (strlen(base_path) - fs_len);
2015           if (strcmp(end, os::file_separator()) != 0) {
2016             strcat(base_path, os::file_separator());
2017           }
2018         }
2019       }
2020     }
2021     // If HeapDumpPath wasn't a file name then we append the default name
2022     if (use_default_filename) {

1982 
1983   // The dump file defaults to java_pid<pid>.hprof in the current working
1984   // directory. HeapDumpPath=<file> can be used to specify an alternative
1985   // dump file name or a directory where dump file is created.
1986   if (dump_file_seq == 0) { // first time in, we initialize base_path
1987     // Calculate potentially longest base path and check if we have enough
1988     // allocated statically.
1989     const size_t total_length =
1990                       (HeapDumpPath == NULL ? 0 : strlen(HeapDumpPath)) +
1991                       strlen(os::file_separator()) + max_digit_chars +
1992                       strlen(dump_file_name) + strlen(dump_file_ext) + 1;
1993     if (total_length > sizeof(base_path)) {
1994       warning("Cannot create heap dump file.  HeapDumpPath is too long.");
1995       return;
1996     }
1997 
1998     bool use_default_filename = true;
1999     if (HeapDumpPath == NULL || HeapDumpPath[0] == '\0') {
2000       // HeapDumpPath=<file> not specified
2001     } else {
2002       strcpy(base_path, HeapDumpPath);
2003       // check if the path is a directory (must exist)
2004       DIR* dir = os::opendir(base_path);
2005       if (dir == NULL) {
2006         use_default_filename = false;
2007       } else {
2008         // HeapDumpPath specified a directory. We append a file separator
2009         // (if needed).
2010         os::closedir(dir);
2011         size_t fs_len = strlen(os::file_separator());
2012         if (strlen(base_path) >= fs_len) {
2013           char* end = base_path;
2014           end += (strlen(base_path) - fs_len);
2015           if (strcmp(end, os::file_separator()) != 0) {
2016             strcat(base_path, os::file_separator());
2017           }
2018         }
2019       }
2020     }
2021     // If HeapDumpPath wasn't a file name then we append the default name
2022     if (use_default_filename) {