src/share/vm/memory/filemap.cpp
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rev 6841 : mq
rev 6842 : mq
*** 22,34 ****
--- 22,39 ----
*
*/
#include "precompiled.hpp"
#include "classfile/classLoader.hpp"
+ #include "classfile/sharedClassUtil.hpp"
#include "classfile/symbolTable.hpp"
+ #include "classfile/systemDictionaryShared.hpp"
#include "classfile/altHashing.hpp"
#include "memory/filemap.hpp"
+ #include "memory/metadataFactory.hpp"
+ #include "memory/oopFactory.hpp"
+ #include "oops/objArrayOop.hpp"
#include "runtime/arguments.hpp"
#include "runtime/java.hpp"
#include "runtime/os.hpp"
#include "runtime/vm_version.hpp"
#include "services/memTracker.hpp"
*** 40,50 ****
#ifndef O_BINARY // if defined (Win32) use binary files.
#define O_BINARY 0 // otherwise do nothing.
#endif
PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
-
extern address JVM_FunctionAtStart();
extern address JVM_FunctionAtEnd();
// Complain and stop. All error conditions occurring during the writing of
// an archive file should stop the process. Unrecoverable errors during
--- 45,54 ----
*** 76,95 ****
// If we continue, then disable shared spaces and close the file.
void FileMapInfo::fail_continue(const char *msg, ...) {
va_list ap;
va_start(ap, msg);
if (RequireSharedSpaces) {
fail(msg, ap);
} else {
if (PrintSharedSpaces) {
tty->print_cr("UseSharedSpaces: %s", msg);
}
}
va_end(ap);
UseSharedSpaces = false;
! close();
}
// Fill in the fileMapInfo structure with data about this VM instance.
// This method copies the vm version info into header_version. If the version is too
--- 80,110 ----
// If we continue, then disable shared spaces and close the file.
void FileMapInfo::fail_continue(const char *msg, ...) {
va_list ap;
va_start(ap, msg);
+ MetaspaceShared::set_archive_loading_failed();
+ if (PrintSharedArchiveAndExit && _validating_classpath_entry_table) {
+ // If we are doing PrintSharedArchiveAndExit and some of the classpath entries
+ // do not validate, we can still continue "limping" to validate the remaining
+ // entries. No need to quit.
+ tty->print("[");
+ tty->vprint(msg, ap);
+ tty->print_cr("]");
+ } else {
if (RequireSharedSpaces) {
fail(msg, ap);
} else {
if (PrintSharedSpaces) {
tty->print_cr("UseSharedSpaces: %s", msg);
}
}
+ }
va_end(ap);
UseSharedSpaces = false;
! assert(current_info() != NULL, "singleton must be registered");
! current_info()->close();
}
// Fill in the fileMapInfo structure with data about this VM instance.
// This method copies the vm version info into header_version. If the version is too
*** 120,190 ****
sprintf(&header_version[JVM_IDENT_MAX-9], "%08x", hash);
header_version[JVM_IDENT_MAX-1] = 0; // Null terminate.
}
}
void FileMapInfo::populate_header(size_t alignment) {
! _header._magic = 0xf00baba2;
! _header._version = _current_version;
! _header._alignment = alignment;
! _header._obj_alignment = ObjectAlignmentInBytes;
// The following fields are for sanity checks for whether this archive
// will function correctly with this JVM and the bootclasspath it's
// invoked with.
// JVM version string ... changes on each build.
! get_header_version(_header._jvm_ident);
! // Build checks on classpath and jar files
! _header._num_jars = 0;
ClassPathEntry *cpe = ClassLoader::classpath_entry(0);
- for ( ; cpe != NULL; cpe = cpe->next()) {
! if (cpe->is_jar_file()) {
! if (_header._num_jars >= JVM_SHARED_JARS_MAX) {
! fail_stop("Too many jar files to share.", NULL);
}
!
! // Jar file - record timestamp and file size.
struct stat st;
! const char *path = cpe->name();
! if (os::stat(path, &st) != 0) {
// If we can't access a jar file in the boot path, then we can't
// make assumptions about where classes get loaded from.
! fail_stop("Unable to open jar file %s.", path);
}
! _header._jar[_header._num_jars]._timestamp = st.st_mtime;
! _header._jar[_header._num_jars]._filesize = st.st_size;
! _header._num_jars++;
} else {
! // If directories appear in boot classpath, they must be empty to
! // avoid having to verify each individual class file.
! const char* name = ((ClassPathDirEntry*)cpe)->name();
if (!os::dir_is_empty(name)) {
! fail_stop("Boot classpath directory %s is not empty.", name);
}
}
}
}
// Read the FileMapInfo information from the file.
bool FileMapInfo::init_from_file(int fd) {
!
! size_t n = read(fd, &_header, sizeof(struct FileMapHeader));
! if (n != sizeof(struct FileMapHeader)) {
fail_continue("Unable to read the file header.");
return false;
}
! if (_header._version != current_version()) {
fail_continue("The shared archive file has the wrong version.");
return false;
}
_file_offset = (long)n;
return true;
}
// Read the FileMapInfo information from the file.
--- 135,339 ----
sprintf(&header_version[JVM_IDENT_MAX-9], "%08x", hash);
header_version[JVM_IDENT_MAX-1] = 0; // Null terminate.
}
}
+ FileMapInfo::FileMapInfo() {
+ assert(_current_info == NULL, "must be singleton"); // not thread safe
+ _current_info = this;
+ memset(this, 0, sizeof(FileMapInfo));
+ _file_offset = 0;
+ _file_open = false;
+ _header = SharedClassUtil::allocate_file_map_header();
+ _header->_version = _invalid_version;
+ }
+
+ FileMapInfo::~FileMapInfo() {
+ assert(_current_info == this, "must be singleton"); // not thread safe
+ _current_info = NULL;
+ }
+
void FileMapInfo::populate_header(size_t alignment) {
! _header->populate(this, alignment);
! }
!
! size_t FileMapInfo::FileMapHeader::data_size() {
! return SharedClassUtil::file_map_header_size() - sizeof(FileMapInfo::FileMapHeaderBase);
! }
!
! void FileMapInfo::FileMapHeader::populate(FileMapInfo* mapinfo, size_t alignment) {
! _magic = 0xf00baba2;
! _version = _current_version;
! _alignment = alignment;
! _obj_alignment = ObjectAlignmentInBytes;
! _classpath_entry_table_size = mapinfo->_classpath_entry_table_size;
! _classpath_entry_table = mapinfo->_classpath_entry_table;
! _classpath_entry_size = mapinfo->_classpath_entry_size;
// The following fields are for sanity checks for whether this archive
// will function correctly with this JVM and the bootclasspath it's
// invoked with.
// JVM version string ... changes on each build.
! get_header_version(_jvm_ident);
! }
!
! void FileMapInfo::allocate_classpath_entry_table() {
! int bytes = 0;
! int count = 0;
! char* strptr = NULL;
! char* strptr_max = NULL;
! Thread* THREAD = Thread::current();
!
! ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data();
! size_t entry_size = SharedClassUtil::shared_class_path_entry_size();
! for (int pass=0; pass<2; pass++) {
ClassPathEntry *cpe = ClassLoader::classpath_entry(0);
! for (int cur_entry = 0 ; cpe != NULL; cpe = cpe->next(), cur_entry++) {
! const char *name = cpe->name();
! int name_bytes = (int)(strlen(name) + 1);
!
! if (pass == 0) {
! count ++;
! bytes += (int)entry_size;
! bytes += name_bytes;
! if (TraceClassPaths || (TraceClassLoading && Verbose)) {
! tty->print_cr("[Add main shared path (%s) %s]", (cpe->is_jar_file() ? "jar" : "dir"), name);
}
! } else {
! SharedClassPathEntry* ent = shared_classpath(cur_entry);
! if (cpe->is_jar_file()) {
struct stat st;
! if (os::stat(name, &st) != 0) {
! // The file/dir must exist, or else it would not have been added
! // into ClassLoader::classpath_entry().
! //
// If we can't access a jar file in the boot path, then we can't
// make assumptions about where classes get loaded from.
! FileMapInfo::fail_stop("Unable to open jar file %s.", name);
}
!
! EXCEPTION_MARK; // The following call should never throw, but would exit VM on error.
! SharedClassUtil::update_shared_classpath(cpe, ent, st.st_mtime, st.st_size, THREAD);
} else {
+ ent->_filesize = -1;
+ if (!os::dir_is_empty(name)) {
+ ClassLoader::exit_with_path_failure("Cannot have non-empty directory in archived classpaths", name);
+ }
+ }
+ ent->_name = strptr;
+ if (strptr + name_bytes <= strptr_max) {
+ strncpy(strptr, name, (size_t)name_bytes); // name_bytes includes trailing 0.
+ strptr += name_bytes;
+ } else {
+ assert(0, "miscalculated buffer size");
+ }
+ }
+ }
+
+ if (pass == 0) {
+ EXCEPTION_MARK; // The following call should never throw, but would exit VM on error.
+ Array<u8>* arr = MetadataFactory::new_array<u8>(loader_data, (bytes + 7)/8, THREAD);
+ strptr = (char*)(arr->data());
+ strptr_max = strptr + bytes;
+ SharedClassPathEntry* table = (SharedClassPathEntry*)strptr;
+ strptr += entry_size * count;
! _classpath_entry_table_size = count;
! _classpath_entry_table = table;
! _classpath_entry_size = entry_size;
! }
! }
! }
!
! bool FileMapInfo::validate_classpath_entry_table() {
! _validating_classpath_entry_table = true;
!
! int count = _header->_classpath_entry_table_size;
!
! _classpath_entry_table = _header->_classpath_entry_table;
! _classpath_entry_size = _header->_classpath_entry_size;
!
! for (int i=0; i<count; i++) {
! SharedClassPathEntry* ent = shared_classpath(i);
! struct stat st;
! const char* name = ent->_name;
! bool ok = true;
! if (TraceClassPaths || (TraceClassLoading && Verbose)) {
! tty->print_cr("[Checking shared classpath entry: %s]", name);
! }
! if (os::stat(name, &st) != 0) {
! fail_continue("Required classpath entry does not exist: %s", name);
! ok = false;
! } else if (ent->is_dir()) {
if (!os::dir_is_empty(name)) {
! fail_continue("directory is not empty: %s", name);
! ok = false;
! }
! } else {
! if (ent->_timestamp != st.st_mtime ||
! ent->_filesize != st.st_size) {
! ok = false;
! if (PrintSharedArchiveAndExit) {
! fail_continue(ent->_timestamp != st.st_mtime ?
! "Timestamp mismatch" :
! "File size mismatch");
! } else {
! fail_continue("A jar file is not the one used while building"
! " the shared archive file: %s", name);
! }
}
}
+ if (ok) {
+ if (TraceClassPaths || (TraceClassLoading && Verbose)) {
+ tty->print_cr("[ok]");
}
+ } else if (!PrintSharedArchiveAndExit) {
+ _validating_classpath_entry_table = false;
+ return false;
+ }
+ }
+
+ _classpath_entry_table_size = _header->_classpath_entry_table_size;
+ _validating_classpath_entry_table = false;
+ return true;
}
// Read the FileMapInfo information from the file.
bool FileMapInfo::init_from_file(int fd) {
! size_t sz = _header->data_size();
! char* addr = _header->data();
! size_t n = os::read(fd, addr, (unsigned int)sz);
! if (n != sz) {
fail_continue("Unable to read the file header.");
return false;
}
! if (_header->_version != current_version()) {
fail_continue("The shared archive file has the wrong version.");
return false;
}
_file_offset = (long)n;
+
+ size_t info_size = _header->_paths_misc_info_size;
+ _paths_misc_info = NEW_C_HEAP_ARRAY_RETURN_NULL(char, info_size, mtClass);
+ if (_paths_misc_info == NULL) {
+ fail_continue("Unable to read the file header.");
+ return false;
+ }
+ n = os::read(fd, _paths_misc_info, (unsigned int)info_size);
+ if (n != info_size) {
+ fail_continue("Unable to read the shared path info header.");
+ FREE_C_HEAP_ARRAY(char, _paths_misc_info, mtClass);
+ _paths_misc_info = NULL;
+ return false;
+ }
+
+ _file_offset += (long)n;
return true;
}
// Read the FileMapInfo information from the file.
*** 235,265 ****
// Write the header to the file, seek to the next allocation boundary.
void FileMapInfo::write_header() {
! write_bytes_aligned(&_header, sizeof(FileMapHeader));
}
// Dump shared spaces to file.
void FileMapInfo::write_space(int i, Metaspace* space, bool read_only) {
align_file_position();
size_t used = space->used_bytes_slow(Metaspace::NonClassType);
size_t capacity = space->capacity_bytes_slow(Metaspace::NonClassType);
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[i];
write_region(i, (char*)space->bottom(), used, capacity, read_only, false);
}
// Dump region to file.
void FileMapInfo::write_region(int region, char* base, size_t size,
size_t capacity, bool read_only,
bool allow_exec) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[region];
if (_file_open) {
guarantee(si->_file_offset == _file_offset, "file offset mismatch.");
if (PrintSharedSpaces) {
tty->print_cr("Shared file region %d: 0x%6x bytes, addr " INTPTR_FORMAT
--- 384,423 ----
// Write the header to the file, seek to the next allocation boundary.
void FileMapInfo::write_header() {
! int info_size = ClassLoader::get_shared_paths_misc_info_size();
!
! _header->_paths_misc_info_size = info_size;
!
! align_file_position();
! size_t sz = _header->data_size();
! char* addr = _header->data();
! write_bytes(addr, (int)sz); // skip the C++ vtable
! write_bytes(ClassLoader::get_shared_paths_misc_info(), info_size);
! align_file_position();
}
// Dump shared spaces to file.
void FileMapInfo::write_space(int i, Metaspace* space, bool read_only) {
align_file_position();
size_t used = space->used_bytes_slow(Metaspace::NonClassType);
size_t capacity = space->capacity_bytes_slow(Metaspace::NonClassType);
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
write_region(i, (char*)space->bottom(), used, capacity, read_only, false);
}
// Dump region to file.
void FileMapInfo::write_region(int region, char* base, size_t size,
size_t capacity, bool read_only,
bool allow_exec) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[region];
if (_file_open) {
guarantee(si->_file_offset == _file_offset, "file offset mismatch.");
if (PrintSharedSpaces) {
tty->print_cr("Shared file region %d: 0x%6x bytes, addr " INTPTR_FORMAT
*** 337,347 ****
// JVM/TI RedefineClasses() support:
// Remap the shared readonly space to shared readwrite, private.
bool FileMapInfo::remap_shared_readonly_as_readwrite() {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[0];
if (!si->_read_only) {
// the space is already readwrite so we are done
return true;
}
size_t used = si->_used;
--- 495,505 ----
// JVM/TI RedefineClasses() support:
// Remap the shared readonly space to shared readwrite, private.
bool FileMapInfo::remap_shared_readonly_as_readwrite() {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[0];
if (!si->_read_only) {
// the space is already readwrite so we are done
return true;
}
size_t used = si->_used;
*** 365,375 ****
return true;
}
// Map the whole region at once, assumed to be allocated contiguously.
ReservedSpace FileMapInfo::reserve_shared_memory() {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[0];
char* requested_addr = si->_base;
size_t size = FileMapInfo::shared_spaces_size();
// Reserve the space first, then map otherwise map will go right over some
--- 523,533 ----
return true;
}
// Map the whole region at once, assumed to be allocated contiguously.
ReservedSpace FileMapInfo::reserve_shared_memory() {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[0];
char* requested_addr = si->_base;
size_t size = FileMapInfo::shared_spaces_size();
// Reserve the space first, then map otherwise map will go right over some
*** 387,397 ****
// Memory map a region in the address space.
static const char* shared_region_name[] = { "ReadOnly", "ReadWrite", "MiscData", "MiscCode"};
char* FileMapInfo::map_region(int i) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[i];
size_t used = si->_used;
size_t alignment = os::vm_allocation_granularity();
size_t size = align_size_up(used, alignment);
char *requested_addr = si->_base;
--- 545,555 ----
// Memory map a region in the address space.
static const char* shared_region_name[] = { "ReadOnly", "ReadWrite", "MiscData", "MiscCode"};
char* FileMapInfo::map_region(int i) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
size_t used = si->_used;
size_t alignment = os::vm_allocation_granularity();
size_t size = align_size_up(used, alignment);
char *requested_addr = si->_base;
*** 413,423 ****
// Unmap a memory region in the address space.
void FileMapInfo::unmap_region(int i) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[i];
size_t used = si->_used;
size_t size = align_size_up(used, os::vm_allocation_granularity());
if (!os::unmap_memory(si->_base, size)) {
fail_stop("Unable to unmap shared space.");
}
--- 571,581 ----
// Unmap a memory region in the address space.
void FileMapInfo::unmap_region(int i) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
size_t used = si->_used;
size_t size = align_size_up(used, os::vm_allocation_granularity());
if (!os::unmap_memory(si->_base, size)) {
fail_stop("Unable to unmap shared space.");
}
*** 430,445 ****
}
}
FileMapInfo* FileMapInfo::_current_info = NULL;
!
// Open the shared archive file, read and validate the header
// information (version, boot classpath, etc.). If initialization
// fails, shared spaces are disabled and the file is closed. [See
// fail_continue.]
bool FileMapInfo::initialize() {
assert(UseSharedSpaces, "UseSharedSpaces expected.");
if (JvmtiExport::can_modify_any_class() || JvmtiExport::can_walk_any_space()) {
fail_continue("Tool agent requires sharing to be disabled.");
--- 588,612 ----
}
}
FileMapInfo* FileMapInfo::_current_info = NULL;
! SharedClassPathEntry* FileMapInfo::_classpath_entry_table = NULL;
! int FileMapInfo::_classpath_entry_table_size = 0;
! size_t FileMapInfo::_classpath_entry_size = 0x1234baad;
! bool FileMapInfo::_validating_classpath_entry_table = false;
// Open the shared archive file, read and validate the header
// information (version, boot classpath, etc.). If initialization
// fails, shared spaces are disabled and the file is closed. [See
// fail_continue.]
+ //
+ // Validation of the archive is done in two steps:
+ //
+ // [1] validate_header() - done here. This checks the header, including _paths_misc_info.
+ // [2] validate_classpath_entry_table - this is done later, because the table is in the RW
+ // region of the archive, which is not mapped yet.
bool FileMapInfo::initialize() {
assert(UseSharedSpaces, "UseSharedSpaces expected.");
if (JvmtiExport::can_modify_any_class() || JvmtiExport::can_walk_any_space()) {
fail_continue("Tool agent requires sharing to be disabled.");
*** 449,565 ****
if (!open_for_read()) {
return false;
}
init_from_file(_fd);
! if (!validate()) {
return false;
}
! SharedReadOnlySize = _header._space[0]._capacity;
! SharedReadWriteSize = _header._space[1]._capacity;
! SharedMiscDataSize = _header._space[2]._capacity;
! SharedMiscCodeSize = _header._space[3]._capacity;
return true;
}
!
! bool FileMapInfo::validate() {
! if (_header._version != current_version()) {
! fail_continue("The shared archive file is the wrong version.");
return false;
}
! if (_header._magic != (int)0xf00baba2) {
! fail_continue("The shared archive file has a bad magic number.");
return false;
}
char header_version[JVM_IDENT_MAX];
get_header_version(header_version);
! if (strncmp(_header._jvm_ident, header_version, JVM_IDENT_MAX-1) != 0) {
! fail_continue("The shared archive file was created by a different"
! " version or build of HotSpot.");
! return false;
}
! if (_header._obj_alignment != ObjectAlignmentInBytes) {
! fail_continue("The shared archive file's ObjectAlignmentInBytes of %d"
! " does not equal the current ObjectAlignmentInBytes of %d.",
! _header._obj_alignment, ObjectAlignmentInBytes);
return false;
}
!
! // Cannot verify interpreter yet, as it can only be created after the GC
! // heap has been initialized.
!
! if (_header._num_jars >= JVM_SHARED_JARS_MAX) {
! fail_continue("Too many jar files to share.");
return false;
}
! // Build checks on classpath and jar files
! int num_jars_now = 0;
! ClassPathEntry *cpe = ClassLoader::classpath_entry(0);
! for ( ; cpe != NULL; cpe = cpe->next()) {
! if (cpe->is_jar_file()) {
! if (num_jars_now < _header._num_jars) {
! // Jar file - verify timestamp and file size.
! struct stat st;
! const char *path = cpe->name();
! if (os::stat(path, &st) != 0) {
! fail_continue("Unable to open jar file %s.", path);
! return false;
}
- if (_header._jar[num_jars_now]._timestamp != st.st_mtime ||
- _header._jar[num_jars_now]._filesize != st.st_size) {
- fail_continue("A jar file is not the one used while building"
- " the shared archive file.");
- return false;
}
}
- ++num_jars_now;
- } else {
! // If directories appear in boot classpath, they must be empty to
! // avoid having to verify each individual class file.
! const char* name = ((ClassPathDirEntry*)cpe)->name();
! if (!os::dir_is_empty(name)) {
! fail_continue("Boot classpath directory %s is not empty.", name);
! return false;
! }
}
! }
! if (num_jars_now < _header._num_jars) {
! fail_continue("The number of jar files in the boot classpath is"
! " less than the number the shared archive was created with.");
! return false;
! }
!
! return true;
}
// The following method is provided to see whether a given pointer
// falls in the mapped shared space.
// Param:
// p, The given pointer
// Return:
// True if the p is within the mapped shared space, otherwise, false.
bool FileMapInfo::is_in_shared_space(const void* p) {
for (int i = 0; i < MetaspaceShared::n_regions; i++) {
! if (p >= _header._space[i]._base &&
! p < _header._space[i]._base + _header._space[i]._used) {
return true;
}
}
return false;
}
void FileMapInfo::print_shared_spaces() {
gclog_or_tty->print_cr("Shared Spaces:");
for (int i = 0; i < MetaspaceShared::n_regions; i++) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header._space[i];
gclog_or_tty->print(" %s " INTPTR_FORMAT "-" INTPTR_FORMAT,
shared_region_name[i],
si->_base, si->_base + si->_used);
}
}
--- 616,706 ----
if (!open_for_read()) {
return false;
}
init_from_file(_fd);
! if (!validate_header()) {
return false;
}
! SharedReadOnlySize = _header->_space[0]._capacity;
! SharedReadWriteSize = _header->_space[1]._capacity;
! SharedMiscDataSize = _header->_space[2]._capacity;
! SharedMiscCodeSize = _header->_space[3]._capacity;
return true;
}
! bool FileMapInfo::FileMapHeader::validate() {
! if (_version != current_version()) {
! FileMapInfo::fail_continue("The shared archive file is the wrong version.");
return false;
}
! if (_magic != (int)0xf00baba2) {
! FileMapInfo::fail_continue("The shared archive file has a bad magic number.");
return false;
}
char header_version[JVM_IDENT_MAX];
get_header_version(header_version);
! if (strncmp(_jvm_ident, header_version, JVM_IDENT_MAX-1) != 0) {
! if (TraceClassPaths) {
! tty->print_cr("Expected: %s", header_version);
! tty->print_cr("Actual: %s", _jvm_ident);
}
! FileMapInfo::fail_continue("The shared archive file was created by a different"
! " version or build of HotSpot");
return false;
}
! if (_obj_alignment != ObjectAlignmentInBytes) {
! FileMapInfo::fail_continue("The shared archive file's ObjectAlignmentInBytes of %d"
! " does not equal the current ObjectAlignmentInBytes of %d.",
! _obj_alignment, ObjectAlignmentInBytes);
return false;
}
! return true;
! }
! bool FileMapInfo::validate_header() {
! bool status = _header->validate();
! if (status) {
! if (!ClassLoader::check_shared_paths_misc_info(_paths_misc_info, _header->_paths_misc_info_size)) {
! if (!PrintSharedArchiveAndExit) {
! fail_continue("shared class paths mismatch (hint: enable -XX:+TraceClassPaths to diagnose the failure)");
! status = false;
}
}
}
! if (_paths_misc_info != NULL) {
! FREE_C_HEAP_ARRAY(char, _paths_misc_info, mtClass);
! _paths_misc_info = NULL;
}
! return status;
}
// The following method is provided to see whether a given pointer
// falls in the mapped shared space.
// Param:
// p, The given pointer
// Return:
// True if the p is within the mapped shared space, otherwise, false.
bool FileMapInfo::is_in_shared_space(const void* p) {
for (int i = 0; i < MetaspaceShared::n_regions; i++) {
! if (p >= _header->_space[i]._base &&
! p < _header->_space[i]._base + _header->_space[i]._used) {
return true;
}
}
return false;
}
void FileMapInfo::print_shared_spaces() {
gclog_or_tty->print_cr("Shared Spaces:");
for (int i = 0; i < MetaspaceShared::n_regions; i++) {
! struct FileMapInfo::FileMapHeader::space_info* si = &_header->_space[i];
gclog_or_tty->print(" %s " INTPTR_FORMAT "-" INTPTR_FORMAT,
shared_region_name[i],
si->_base, si->_base + si->_used);
}
}
*** 568,580 ****
void FileMapInfo::stop_sharing_and_unmap(const char* msg) {
FileMapInfo *map_info = FileMapInfo::current_info();
if (map_info) {
map_info->fail_continue(msg);
for (int i = 0; i < MetaspaceShared::n_regions; i++) {
! if (map_info->_header._space[i]._base != NULL) {
map_info->unmap_region(i);
! map_info->_header._space[i]._base = NULL;
}
}
} else if (DumpSharedSpaces) {
fail_stop(msg, NULL);
}
--- 709,721 ----
void FileMapInfo::stop_sharing_and_unmap(const char* msg) {
FileMapInfo *map_info = FileMapInfo::current_info();
if (map_info) {
map_info->fail_continue(msg);
for (int i = 0; i < MetaspaceShared::n_regions; i++) {
! if (map_info->_header->_space[i]._base != NULL) {
map_info->unmap_region(i);
! map_info->_header->_space[i]._base = NULL;
}
}
} else if (DumpSharedSpaces) {
fail_stop(msg, NULL);
}