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src/hotspot/share/services/metaspaceDCmd.cpp
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rev 49736 : [mq]: metaspace-additions-to-jcmd
@@ -22,15 +22,55 @@
*
*/
#include "precompiled.hpp"
#include "memory/metaspace.hpp"
#include "services/diagnosticCommand.hpp"
+#include "services/nmtCommon.hpp"
-MetaspaceDCmd::MetaspaceDCmd(outputStream* output, bool heap): DCmd(output, heap) {
+
+MetaspaceDCmd::MetaspaceDCmd(outputStream* output, bool heap)
+ : DCmdWithParser(output, heap)
+ , _show_loaders("loaders", "Shows usage by class loader.", "BOOLEAN", false, "false")
+ , _by_chunktype("by_chunktype", "Break down numbers by chunk type.", "BOOLEAN", false, "false")
+ , _by_spacetype("by_spacetype", "Break down numbers by loader type.", "BOOLEAN", false, "false")
+ , _show_vslist("vslist", "Shows details about the virtual space list", "BOOLEAN", false, "false")
+ , _show_vsmap("vsmap", "Shows a map of the virtual spaces", "BOOLEAN", false, "false")
+ , _show_chunk_freelist("chunk-freelist", "Shows details about the free chunk list", "BOOLEAN", false, "false")
+ , _scale("scale", "Memory usage in which to scale. Valid values are: 1, KB, MB or GB (fixed scale) "
+ "or \"dynamic\" for dynamically choosen scale.",
+ "STRING", false, "dynamic")
+{
+ _dcmdparser.add_dcmd_option(&_show_loaders);
+ _dcmdparser.add_dcmd_option(&_by_chunktype);
+ _dcmdparser.add_dcmd_option(&_by_spacetype);
+ _dcmdparser.add_dcmd_option(&_show_vslist);
+ _dcmdparser.add_dcmd_option(&_show_vsmap);
+ _dcmdparser.add_dcmd_option(&_show_chunk_freelist);
+ _dcmdparser.add_dcmd_option(&_scale);
}
void MetaspaceDCmd::execute(DCmdSource source, TRAPS) {
- const size_t scale = 1 * K;
- VM_PrintMetadata op(output(), scale);
+ // Parse scale value.
+ const char* scale_value = _scale.value();
+ size_t scale = 0;
+ if (scale_value != NULL) {
+ if (strcasecmp("dynamic", scale_value) == 0) {
+ scale = 0;
+ } else {
+ scale = NMTUtil::scale_from_name(scale_value);
+ if (scale == 0) {
+ output()->print_cr("Invalid scale: \"%s\". Will use dynamic scaling.", scale_value);
+ }
+ }
+ }
+ // Parse flags.
+ int flags = 0;
+ if (_show_loaders.value()) flags |= MetaspaceUtils::rf_show_loaders;
+ if (_by_chunktype.value()) flags |= MetaspaceUtils::rf_break_down_by_chunktype;
+ if (_by_spacetype.value()) flags |= MetaspaceUtils::rf_break_down_by_spacetype;
+ if (_show_vslist.value()) flags |= MetaspaceUtils::rf_show_vslist;
+ if (_show_vsmap.value()) flags |= MetaspaceUtils::rf_show_vsmap;
+ if (_show_chunk_freelist.value()) flags |= MetaspaceUtils::rf_show_chunk_freelist;
+ VM_PrintMetadata op(output(), scale, flags);
VMThread::execute(&op);
}
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