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8006088: Incompatible heap size flags accepted by VM

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Make processing of minimum, initial and maximum heap size more intiutive by removing previous limitations on allowed values, and make error reporting consistent. Further, fix errors in ergonomic heap sizing.

Reviewed-by: johnc, jwilhelm, tamao
This commit is contained in:
Thomas Schatzl 2013-05-06 17:19:42 +02:00
parent 0c4933f5b0
commit 9b9b515fb8
5 changed files with 67 additions and 35 deletions
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10
hotspot/src/share/vm/prims/whitebox.cpp
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@ -93,6 +93,15 @@ WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
return closure.found();
WB_END
WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
CollectorPolicy * p = Universe::heap()->collector_policy();
gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
p->min_alignment(), p->max_alignment());
}
WB_END
#if INCLUDE_ALL_GCS
WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
G1CollectedHeap* g1 = G1CollectedHeap::heap();
@ -386,6 +395,7 @@ static JNINativeMethod methods[] = {
CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
(void*) &WB_ParseCommandLine
},
{CC"printHeapSizes", CC"()V", (void*)&WB_PrintHeapSizes },
#if INCLUDE_ALL_GCS
{CC"g1InConcurrentMark", CC"()Z", (void*)&WB_G1InConcurrentMark},
{CC"g1IsHumongous", CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous },