hotspot/src/share/vm/utilities/debug.cpp
void report_java_out_of_memory(const char* message) {
{- -------------------------------------------
(1) (なお, この処理が複数回実行されないよう, out_of_memory_reported という変数で排他を取っている)
---------------------------------------- -}
static jint out_of_memory_reported = 0;
// A number of threads may attempt to report OutOfMemoryError at around the
// same time. To avoid dumping the heap or executing the data collection
// commands multiple times we just do it once when the first threads reports
// the error.
if (Atomic::cmpxchg(1, &out_of_memory_reported, 0) == 0) {
{- -------------------------------------------
(1) HeapDumpOnOutOfMemoryError オプションが指定されていれば, HeapDumper にヒープをダンプさせる.
---------------------------------------- -}
// create heap dump before OnOutOfMemoryError commands are executed
if (HeapDumpOnOutOfMemoryError) {
tty->print_cr("java.lang.OutOfMemoryError: %s", message);
HeapDumper::dump_heap_from_oome();
}
{- -------------------------------------------
(1) OnOutOfMemoryError オプションが指定されていれば, VMError::report_java_out_of_memory() を呼び出してユーザー指定のコマンドを起動させる.
---------------------------------------- -}
if (OnOutOfMemoryError && OnOutOfMemoryError[0]) {
VMError err(message);
err.report_java_out_of_memory();
}
}
}
This document is available under the GNU GENERAL PUBLIC LICENSE Version 2.