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8020701: Avoid crashes in WatcherThread

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Reviewed-by: acorn, dcubed, dsimms
This commit is contained in:
Rickard Bäckman 2013-07-17 13:48:15 +02:00
parent 71ca890b66
commit 2d77390705
14 changed files with 169 additions and 1 deletions
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10
hotspot/src/share/vm/runtime/thread.hpp
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@ -733,6 +733,8 @@ class WatcherThread: public Thread {
static bool _startable;
volatile static bool _should_terminate; // updated without holding lock
os::WatcherThreadCrashProtection* _crash_protection;
public:
enum SomeConstants {
delay_interval = 10 // interrupt delay in milliseconds
@ -760,6 +762,14 @@ class WatcherThread: public Thread {
// Otherwise the first task to enroll will trigger the start
static void make_startable();
void set_crash_protection(os::WatcherThreadCrashProtection* crash_protection) {
assert(Thread::current()->is_Watcher_thread(), "Can only be set by WatcherThread");
_crash_protection = crash_protection;
}
bool has_crash_protection() const { return _crash_protection != NULL; }
os::WatcherThreadCrashProtection* crash_protection() const { return _crash_protection; }
private:
int sleep() const;
};