628 {
629 jlong h = start;
630 char *p = (char *)buf, *e = p + len;
631 while (p < e) {
632 char c = *p++;
633 if (c <= ' ') {
634 /* Skip spaces and control characters */
635 continue;
636 }
637 h = 31 * h + c;
638 }
639 return h;
640 }
641
642 // Preload classes from a list, populate the shared spaces and dump to a
643 // file.
644 void MetaspaceShared::preload_and_dump(TRAPS) {
645 TraceTime timer("Dump Shared Spaces", TraceStartupTime);
646 ResourceMark rm;
647
648 // Lock out GC - is it necessary? I don't think we care.
649 No_GC_Verifier no_gc;
650
651 // Preload classes to be shared.
652 // Should use some os:: method rather than fopen() here. aB.
653 // Construct the path to the class list (in jre/lib)
654 // Walk up two directories from the location of the VM and
655 // optionally tack on "lib" (depending on platform)
656 char class_list_path[JVM_MAXPATHLEN];
657 os::jvm_path(class_list_path, sizeof(class_list_path));
658 for (int i = 0; i < 3; i++) {
659 char *end = strrchr(class_list_path, *os::file_separator());
660 if (end != NULL) *end = '\0';
661 }
662 int class_list_path_len = (int)strlen(class_list_path);
663 if (class_list_path_len >= 3) {
664 if (strcmp(class_list_path + class_list_path_len - 3, "lib") != 0) {
665 strcat(class_list_path, os::file_separator());
666 strcat(class_list_path, "lib");
667 }
668 }
669 strcat(class_list_path, os::file_separator());
670 strcat(class_list_path, "classlist");
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628 {
629 jlong h = start;
630 char *p = (char *)buf, *e = p + len;
631 while (p < e) {
632 char c = *p++;
633 if (c <= ' ') {
634 /* Skip spaces and control characters */
635 continue;
636 }
637 h = 31 * h + c;
638 }
639 return h;
640 }
641
642 // Preload classes from a list, populate the shared spaces and dump to a
643 // file.
644 void MetaspaceShared::preload_and_dump(TRAPS) {
645 TraceTime timer("Dump Shared Spaces", TraceStartupTime);
646 ResourceMark rm;
647
648 // Preload classes to be shared.
649 // Should use some os:: method rather than fopen() here. aB.
650 // Construct the path to the class list (in jre/lib)
651 // Walk up two directories from the location of the VM and
652 // optionally tack on "lib" (depending on platform)
653 char class_list_path[JVM_MAXPATHLEN];
654 os::jvm_path(class_list_path, sizeof(class_list_path));
655 for (int i = 0; i < 3; i++) {
656 char *end = strrchr(class_list_path, *os::file_separator());
657 if (end != NULL) *end = '\0';
658 }
659 int class_list_path_len = (int)strlen(class_list_path);
660 if (class_list_path_len >= 3) {
661 if (strcmp(class_list_path + class_list_path_len - 3, "lib") != 0) {
662 strcat(class_list_path, os::file_separator());
663 strcat(class_list_path, "lib");
664 }
665 }
666 strcat(class_list_path, os::file_separator());
667 strcat(class_list_path, "classlist");
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