archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-20 19:14:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8145127: VM warning: WaitForMultipleObjects timed out (0) ..

Browse source 
Increase number of tracked threads, and set exiting-process flag earlier

Reviewed-by: dholmes, dcubed
This commit is contained in:
Ivan Gerasimov 2016-01-13 11:43:07 +03:00
parent 10b904cbd2
commit 29169fd975
1 changed files with 49 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

75
hotspot/src/os/windows/vm/os_windows.cpp
View file

@ -3815,6 +3815,7 @@ HINSTANCE os::win32::load_Windows_dll(const char* name, char *ebuf,
return NULL;
}
#define MAXIMUM_THREADS_TO_KEEP (16 * MAXIMUM_WAIT_OBJECTS)
#define EXIT_TIMEOUT 300000 /* 5 minutes */
static BOOL CALLBACK init_crit_sect_call(PINIT_ONCE, PVOID pcrit_sect, PVOID*) {
@ -3833,7 +3834,7 @@ int os::win32::exit_process_or_thread(Ept what, int exit_code) {
// _endthreadex().
// Should be large enough to avoid blocking the exiting thread due to lack of
// a free slot.
static HANDLE handles[MAXIMUM_WAIT_OBJECTS];
static HANDLE handles[MAXIMUM_THREADS_TO_KEEP];
static int handle_count = 0;
static INIT_ONCE init_once_crit_sect = INIT_ONCE_STATIC_INIT;
@ -3847,6 +3848,11 @@ int os::win32::exit_process_or_thread(Ept what, int exit_code) {
if (!InitOnceExecuteOnce(&init_once_crit_sect, init_crit_sect_call, &crit_sect, NULL)) {
warning("crit_sect initialization failed in %s: %d\n", __FILE__, __LINE__);
} else if (OrderAccess::load_acquire(&process_exiting) == 0) {
if (what != EPT_THREAD) {
// Atomically set process_exiting before the critical section
// to increase the visibility between racing threads.
Atomic::cmpxchg((jint)GetCurrentThreadId(), &process_exiting, 0);
}
EnterCriticalSection(&crit_sect);
if (what == EPT_THREAD && OrderAccess::load_acquire(&process_exiting) == 0) {
@ -3867,14 +3873,14 @@ int os::win32::exit_process_or_thread(Ept what, int exit_code) {
// If there's no free slot in the array of the kept handles, we'll have to
// wait until at least one thread completes exiting.
if ((handle_count = j) == MAXIMUM_WAIT_OBJECTS) {
if ((handle_count = j) == MAXIMUM_THREADS_TO_KEEP) {
// Raise the priority of the oldest exiting thread to increase its chances
// to complete sooner.
SetThreadPriority(handles[0], THREAD_PRIORITY_ABOVE_NORMAL);
res = WaitForMultipleObjects(MAXIMUM_WAIT_OBJECTS, handles, FALSE, EXIT_TIMEOUT);
if (res >= WAIT_OBJECT_0 && res < (WAIT_OBJECT_0 + MAXIMUM_WAIT_OBJECTS)) {
i = (res - WAIT_OBJECT_0);
handle_count = MAXIMUM_WAIT_OBJECTS - 1;
handle_count = MAXIMUM_THREADS_TO_KEEP - 1;
for (; i < handle_count; ++i) {
handles[i] = handles[i + 1];
}
@ -3883,7 +3889,7 @@ int os::win32::exit_process_or_thread(Ept what, int exit_code) {
(res == WAIT_FAILED ? "failed" : "timed out"),
GetLastError(), __FILE__, __LINE__);
// Don't keep handles, if we failed waiting for them.
for (i = 0; i < MAXIMUM_WAIT_OBJECTS; ++i) {
for (i = 0; i < MAXIMUM_THREADS_TO_KEEP; ++i) {
CloseHandle(handles[i]);
}
handle_count = 0;
@ -3904,42 +3910,59 @@ int os::win32::exit_process_or_thread(Ept what, int exit_code) {
// The current exiting thread has stored its handle in the array, and now
// should leave the critical section before calling _endthreadex().
} else if (what != EPT_THREAD) {
if (handle_count > 0) {
// Before ending the process, make sure all the threads that had called
// _endthreadex() completed.
} else if (what != EPT_THREAD && handle_count > 0) {
jlong start_time, finish_time, timeout_left;
// Before ending the process, make sure all the threads that had called
// _endthreadex() completed.
// Set the priority level of the current thread to the same value as
// the priority level of exiting threads.
// This is to ensure it will be given a fair chance to execute if
// the timeout expires.
hthr = GetCurrentThread();
SetThreadPriority(hthr, THREAD_PRIORITY_ABOVE_NORMAL);
for (i = 0; i < handle_count; ++i) {
SetThreadPriority(handles[i], THREAD_PRIORITY_ABOVE_NORMAL);
// Set the priority level of the current thread to the same value as
// the priority level of exiting threads.
// This is to ensure it will be given a fair chance to execute if
// the timeout expires.
hthr = GetCurrentThread();
SetThreadPriority(hthr, THREAD_PRIORITY_ABOVE_NORMAL);
start_time = os::javaTimeNanos();
finish_time = start_time + ((jlong)EXIT_TIMEOUT * 1000000L);
for (i = 0; ; ) {
int portion_count = handle_count - i;
if (portion_count > MAXIMUM_WAIT_OBJECTS) {
portion_count = MAXIMUM_WAIT_OBJECTS;
}
res = WaitForMultipleObjects(handle_count, handles, TRUE, EXIT_TIMEOUT);
for (j = 0; j < portion_count; ++j) {
SetThreadPriority(handles[i + j], THREAD_PRIORITY_ABOVE_NORMAL);
}
timeout_left = (finish_time - start_time) / 1000000L;
if (timeout_left < 0) {
timeout_left = 0;
}
res = WaitForMultipleObjects(portion_count, handles + i, TRUE, timeout_left);
if (res == WAIT_FAILED || res == WAIT_TIMEOUT) {
warning("WaitForMultipleObjects %s (%u) in %s: %d\n",
(res == WAIT_FAILED ? "failed" : "timed out"),
GetLastError(), __FILE__, __LINE__);
// Reset portion_count so we close the remaining
// handles due to this error.
portion_count = handle_count - i;
}
for (i = 0; i < handle_count; ++i) {
CloseHandle(handles[i]);
for (j = 0; j < portion_count; ++j) {
CloseHandle(handles[i + j]);
}
handle_count = 0;
if ((i += portion_count) >= handle_count) {
break;
}
start_time = os::javaTimeNanos();
}
OrderAccess::release_store(&process_exiting, 1);
handle_count = 0;
}
LeaveCriticalSection(&crit_sect);
}
if (what == EPT_THREAD) {
while (OrderAccess::load_acquire(&process_exiting) != 0) {
// Some other thread is about to call exit(), so we
// don't let the current thread proceed to _endthreadex()
if (OrderAccess::load_acquire(&process_exiting) != 0 &&
process_exiting != (jint)GetCurrentThreadId()) {
// Some other thread is about to call exit(), so we
// don't let the current thread proceed to exit() or _endthreadex()
while (true) {
SuspendThread(GetCurrentThread());
// Avoid busy-wait loop, if SuspendThread() failed.
Sleep(EXIT_TIMEOUT);