Mercurial > hg > graal-compiler

comparison src/share/vm/runtime/java.cpp @ 242:d95b224e9f17

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
6721093: -XX:AppendRatio=N not supported Summary: Add mechanism to ignore unsupported flags for a set period of time Reviewed-by: acorn, never, coleenp
author kamg
date Mon, 28 Jul 2008 14:07:44 -0400
parents 9c2ecc2ffb12
children fb1a39993f69
comparison
equal deleted inserted replaced
237:1fdb98a17101 242:d95b224e9f17
561 void vm_shutdown_during_initialization(const char* error, const char* message) { 561 void vm_shutdown_during_initialization(const char* error, const char* message) {
562 vm_notify_during_shutdown(error, message); 562 vm_notify_during_shutdown(error, message);
563 vm_shutdown(); 563 vm_shutdown();
564 } 564 }
565 565
566 jdk_version_info JDK_Version::_version_info = {0}; 566 JDK_Version JDK_Version::_current;
567 bool JDK_Version::_pre_jdk16_version = false;
568 int JDK_Version::_jdk_version = 0;
569 567
570 void JDK_Version::initialize() { 568 void JDK_Version::initialize() {
569 jdk_version_info info;
570 assert(!_current.is_valid(), "Don't initialize twice");
571
571 void *lib_handle = os::native_java_library(); 572 void *lib_handle = os::native_java_library();
572 jdk_version_info_fn_t func = 573 jdk_version_info_fn_t func = CAST_TO_FN_PTR(jdk_version_info_fn_t,
573 CAST_TO_FN_PTR(jdk_version_info_fn_t, hpi::dll_lookup(lib_handle, "JDK_GetVersionInfo0")); 574 os::dll_lookup(lib_handle, "JDK_GetVersionInfo0"));
574 575
575 if (func == NULL) { 576 if (func == NULL) {
576 // JDK older than 1.6 577 // JDK older than 1.6
577 _pre_jdk16_version = true; 578 _current._partially_initialized = true;
578 return;
579 }
580
581 if (func != NULL) {
582 (*func)(&_version_info, sizeof(_version_info));
583 }
584 if (jdk_major_version() == 1) {
585 _jdk_version = jdk_minor_version();
586 } else { 579 } else {
587 // If the release version string is changed to n.x.x (e.g. 7.0.0) in a future release 580 (*func)(&info, sizeof(info));
588 _jdk_version = jdk_major_version(); 581
589 } 582 int major = JDK_VERSION_MAJOR(info.jdk_version);
583 int minor = JDK_VERSION_MINOR(info.jdk_version);
584 int micro = JDK_VERSION_MICRO(info.jdk_version);
585 int build = JDK_VERSION_BUILD(info.jdk_version);
586 if (major == 1 && minor > 4) {
587 // We represent "1.5.0" as "5.0", but 1.4.2 as itself.
588 major = minor;
589 minor = micro;
590 micro = 0;
591 }
592 _current = JDK_Version(major, minor, micro, info.update_version,
593 info.special_update_version, build,
594 info.thread_park_blocker == 1);
595 }
596 }
597
598 void JDK_Version::fully_initialize(
599 uint8_t major, uint8_t minor, uint8_t micro, uint8_t update) {
600 // This is only called when current is less than 1.6 and we've gotten
601 // far enough in the initialization to determine the exact version.
602 assert(major < 6, "not needed for JDK version >= 6");
603 assert(is_partially_initialized(), "must not initialize");
604 if (major < 5) {
605 // JDK verison sequence: 1.2.x, 1.3.x, 1.4.x, 5.0.x, 6.0.x, etc.
606 micro = minor;
607 minor = major;
608 major = 1;
609 }
610 _current = JDK_Version(major, minor, micro, update);
590 } 611 }
591 612
592 void JDK_Version_init() { 613 void JDK_Version_init() {
593 JDK_Version::initialize(); 614 JDK_Version::initialize();
594 } 615 }
616
617 static int64_t encode_jdk_version(const JDK_Version& v) {
618 return
619 ((int64_t)v.major_version() << (BitsPerByte * 5)) |
620 ((int64_t)v.minor_version() << (BitsPerByte * 4)) |
621 ((int64_t)v.micro_version() << (BitsPerByte * 3)) |
622 ((int64_t)v.update_version() << (BitsPerByte * 2)) |
623 ((int64_t)v.special_update_version() << (BitsPerByte * 1)) |
624 ((int64_t)v.build_number() << (BitsPerByte * 0));
625 }
626
627 int JDK_Version::compare(const JDK_Version& other) const {
628 assert(is_valid() && other.is_valid(), "Invalid version (uninitialized?)");
629 if (!is_partially_initialized() && other.is_partially_initialized()) {
630 return -(other.compare(*this)); // flip the comparators
631 }
632 assert(!other.is_partially_initialized(), "Not initialized yet");
633 if (is_partially_initialized()) {
634 assert(other.major_version() >= 6,
635 "Invalid JDK version comparison during initialization");
636 return -1;
637 } else {
638 uint64_t e = encode_jdk_version(*this);
639 uint64_t o = encode_jdk_version(other);
640 return (e > o) ? 1 : ((e == o) ? 0 : -1);
641 }
642 }
643
644 void JDK_Version::to_string(char* buffer, size_t buflen) const {
645 size_t index = 0;
646 if (!is_valid()) {
647 jio_snprintf(buffer, buflen, "%s", "(uninitialized)");
648 } else if (is_partially_initialized()) {
649 jio_snprintf(buffer, buflen, "%s", "(uninitialized) pre-1.6.0");
650 } else {
651 index += jio_snprintf(
652 &buffer[index], buflen - index, "%d.%d", _major, _minor);
653 if (_micro > 0) {
654 index += jio_snprintf(&buffer[index], buflen - index, ".%d", _micro);
655 }
656 if (_update > 0) {
657 index += jio_snprintf(&buffer[index], buflen - index, "_%02d", _update);
658 }
659 if (_special > 0) {
660 index += jio_snprintf(&buffer[index], buflen - index, "%c", _special);
661 }
662 if (_build > 0) {
663 index += jio_snprintf(&buffer[index], buflen - index, "-b%02d", _build);
664 }
665 }
666 }