--- a/hotspot/src/os/aix/vm/os_aix.cpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/os/aix/vm/os_aix.cpp Thu Nov 06 01:31:31 2014 +0000
@@ -3830,11 +3830,6 @@
return JNI_OK;
}
-// this is called at the end of vm_initialization
-void os::init_3(void) {
- return;
-}
-
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
if (!guard_memory((char*)_polling_page, Aix::page_size())) {
--- a/hotspot/src/os/bsd/vm/os_bsd.cpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/os/bsd/vm/os_bsd.cpp Thu Nov 06 01:31:31 2014 +0000
@@ -3636,9 +3636,6 @@
return JNI_OK;
}
-// this is called at the end of vm_initialization
-void os::init_3(void) { }
-
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
if (!guard_memory((char*)_polling_page, Bsd::page_size())) {
--- a/hotspot/src/os/linux/vm/os_linux.cpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/os/linux/vm/os_linux.cpp Thu Nov 06 01:31:31 2014 +0000
@@ -163,35 +163,6 @@
// Declarations
static void unpackTime(timespec* absTime, bool isAbsolute, jlong time);
-#ifdef JAVASE_EMBEDDED
-class MemNotifyThread: public Thread {
- friend class VMStructs;
- public:
- virtual void run();
-
- private:
- static MemNotifyThread* _memnotify_thread;
- int _fd;
-
- public:
-
- // Constructor
- MemNotifyThread(int fd);
-
- // Tester
- bool is_memnotify_thread() const { return true; }
-
- // Printing
- char* name() const { return (char*)"Linux MemNotify Thread"; }
-
- // Returns the single instance of the MemNotifyThread
- static MemNotifyThread* memnotify_thread() { return _memnotify_thread; }
-
- // Create and start the single instance of MemNotifyThread
- static void start();
-};
-#endif // JAVASE_EMBEDDED
-
// utility functions
static int SR_initialize();
@@ -4873,17 +4844,6 @@
return JNI_OK;
}
-// this is called at the end of vm_initialization
-void os::init_3(void) {
-#ifdef JAVASE_EMBEDDED
- // Start the MemNotifyThread
- if (LowMemoryProtection) {
- MemNotifyThread::start();
- }
- return;
-#endif
-}
-
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
if (!guard_memory((char*)_polling_page, Linux::page_size())) {
@@ -6040,82 +6000,6 @@
return strlen(buffer);
}
-#ifdef JAVASE_EMBEDDED
-//
-// A thread to watch the '/dev/mem_notify' device, which will tell us when the OS is running low on memory.
-//
-MemNotifyThread* MemNotifyThread::_memnotify_thread = NULL;
-
-// ctor
-//
-MemNotifyThread::MemNotifyThread(int fd): Thread() {
- assert(memnotify_thread() == NULL, "we can only allocate one MemNotifyThread");
- _fd = fd;
-
- if (os::create_thread(this, os::os_thread)) {
- _memnotify_thread = this;
- os::set_priority(this, NearMaxPriority);
- os::start_thread(this);
- }
-}
-
-// Where all the work gets done
-//
-void MemNotifyThread::run() {
- assert(this == memnotify_thread(), "expected the singleton MemNotifyThread");
-
- // Set up the select arguments
- fd_set rfds;
- if (_fd != -1) {
- FD_ZERO(&rfds);
- FD_SET(_fd, &rfds);
- }
-
- // Now wait for the mem_notify device to wake up
- while (1) {
- // Wait for the mem_notify device to signal us..
- int rc = select(_fd+1, _fd != -1 ? &rfds : NULL, NULL, NULL, NULL);
- if (rc == -1) {
- perror("select!\n");
- break;
- } else if (rc) {
- //ssize_t free_before = os::available_memory();
- //tty->print ("Notified: Free: %dK \n",os::available_memory()/1024);
-
- // The kernel is telling us there is not much memory left...
- // try to do something about that
-
- // If we are not already in a GC, try one.
- if (!Universe::heap()->is_gc_active()) {
- Universe::heap()->collect(GCCause::_allocation_failure);
-
- //ssize_t free_after = os::available_memory();
- //tty->print ("Post-Notify: Free: %dK\n",free_after/1024);
- //tty->print ("GC freed: %dK\n", (free_after - free_before)/1024);
- }
- // We might want to do something like the following if we find the GC's are not helping...
- // Universe::heap()->size_policy()->set_gc_time_limit_exceeded(true);
- }
- }
-}
-
-// See if the /dev/mem_notify device exists, and if so, start a thread to monitor it.
-//
-void MemNotifyThread::start() {
- int fd;
- fd = open("/dev/mem_notify", O_RDONLY, 0);
- if (fd < 0) {
- return;
- }
-
- if (memnotify_thread() == NULL) {
- new MemNotifyThread(fd);
- }
-}
-
-#endif // JAVASE_EMBEDDED
-
-
/////////////// Unit tests ///////////////
#ifndef PRODUCT
--- a/hotspot/src/os/solaris/vm/os_solaris.cpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/os/solaris/vm/os_solaris.cpp Thu Nov 06 01:31:31 2014 +0000
@@ -4762,10 +4762,6 @@
return JNI_OK;
}
-void os::init_3(void) {
- return;
-}
-
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
if (mprotect((char *)_polling_page, page_size, PROT_NONE) != 0) {
--- a/hotspot/src/os/windows/vm/os_windows.cpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/os/windows/vm/os_windows.cpp Thu Nov 06 01:31:31 2014 +0000
@@ -4154,10 +4154,6 @@
return JNI_OK;
}
-void os::init_3(void) {
- return;
-}
-
// Mark the polling page as unreadable
void os::make_polling_page_unreadable(void) {
DWORD old_status;
--- a/hotspot/src/share/vm/runtime/globals.hpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/share/vm/runtime/globals.hpp Thu Nov 06 01:31:31 2014 +0000
@@ -2066,9 +2066,6 @@
"Provide more detailed and expensive TLAB statistics " \
"(with PrintTLAB)") \
\
- EMBEDDED_ONLY(product(bool, LowMemoryProtection, true, \
- "Enable LowMemoryProtection")) \
- \
product_pd(bool, NeverActAsServerClassMachine, \
"Never act like a server-class machine") \
\
--- a/hotspot/src/share/vm/runtime/os.hpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/share/vm/runtime/os.hpp Thu Nov 06 01:31:31 2014 +0000
@@ -158,7 +158,6 @@
static void init_globals(void) { // Called from init_globals() in init.cpp
init_globals_ext();
}
- static void init_3(void); // Called at the end of vm init
// File names are case-insensitive on windows only
// Override me as needed
--- a/hotspot/src/share/vm/runtime/thread.cpp Thu Nov 06 00:01:33 2014 +0000
+++ b/hotspot/src/share/vm/runtime/thread.cpp Thu Nov 06 01:31:31 2014 +0000
@@ -3617,9 +3617,6 @@
}
}
- // Give os specific code one last chance to start
- os::init_3();
-
create_vm_timer.end();
#ifdef ASSERT
_vm_complete = true;