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8232080: jlink plugins for vendor information and run-time options

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Reviewed-by: ihse, alanb, kvn, bobv, mchung
This commit is contained in:
Mark Reinhold 2019-10-29 08:26:55 -07:00
parent 72b3f81dd4
commit d83df45396
33 changed files with 848 additions and 45 deletions
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36
src/hotspot/share/classfile/classLoader.cpp
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@ -1529,11 +1529,43 @@ void ClassLoader::initialize() {
// lookup zip library entry points
load_zip_library();
// lookup jimage library entry points
load_jimage_library();
// jimage library entry points are loaded below, in lookup_vm_options
setup_bootstrap_search_path();
}
char* lookup_vm_resource(JImageFile *jimage, const char *jimage_version, const char *path) {
jlong size;
JImageLocationRef location = (*JImageFindResource)(jimage, "java.base", jimage_version, path, &size);
if (location == 0)
return NULL;
char *val = NEW_C_HEAP_ARRAY(char, size+1, mtClass);
(*JImageGetResource)(jimage, location, val, size);
val[size] = '\0';
return val;
}
// Lookup VM options embedded in the modules jimage file
char* ClassLoader::lookup_vm_options() {
jint error;
char modules_path[JVM_MAXPATHLEN];
const char* fileSep = os::file_separator();
// Initialize jimage library entry points
load_jimage_library();
jio_snprintf(modules_path, JVM_MAXPATHLEN, "%s%slib%smodules", Arguments::get_java_home(), fileSep, fileSep);
JImageFile* jimage =(*JImageOpen)(modules_path, &error);
if (jimage == NULL) {
return NULL;
}
const char *jimage_version = get_jimage_version_string();
char *options = lookup_vm_resource(jimage, jimage_version, "jdk/internal/vm/options");
(*JImageClose)(jimage);
return options;
}
#if INCLUDE_CDS
void ClassLoader::initialize_shared_path() {
if (Arguments::is_dumping_archive()) {