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comparison src/os/linux/vm/os_linux.cpp @ 2193:9cd8a2c2d584

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Merge
author bobv
date Wed, 02 Feb 2011 11:54:26 -0500
parents b92c45f2bc75 d70fe6ab4436
children 63d374c54045
comparison
equal deleted inserted replaced
2192:b92c45f2bc75 2193:9cd8a2c2d584
2515 2515
2516 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) { 2516 char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info* page_found) {
2517 return end; 2517 return end;
2518 } 2518 }
2519 2519
2520 extern "C" void numa_warn(int number, char *where, ...) { } 2520 // Something to do with the numa-aware allocator needs these symbols
2521 extern "C" void numa_error(char *where) { } 2521 extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { }
2522 extern "C" JNIEXPORT void numa_error(char *where) { }
2523 extern "C" JNIEXPORT int fork1() { return fork(); }
2522 2524
2523 2525
2524 // If we are running with libnuma version > 2, then we should 2526 // If we are running with libnuma version > 2, then we should
2525 // be trying to use symbols with versions 1.1 2527 // be trying to use symbols with versions 1.1
2526 // If we are running with earlier version, which did not have symbol versions, 2528 // If we are running with earlier version, which did not have symbol versions,
3489 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART. 3491 // the sa_flags field passed to sigaction() includes SA_SIGINFO and SA_RESTART.
3490 // 3492 //
3491 // Note that the VM will print warnings if it detects conflicting signal 3493 // Note that the VM will print warnings if it detects conflicting signal
3492 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers". 3494 // handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
3493 // 3495 //
3494 extern "C" int 3496 extern "C" JNIEXPORT int
3495 JVM_handle_linux_signal(int signo, siginfo_t* siginfo, 3497 JVM_handle_linux_signal(int signo, siginfo_t* siginfo,
3496 void* ucontext, int abort_if_unrecognized); 3498 void* ucontext, int abort_if_unrecognized);
3497 3499
3498 void signalHandler(int sig, siginfo_t* info, void* uc) { 3500 void signalHandler(int sig, siginfo_t* info, void* uc) {
3499 assert(info != NULL && uc != NULL, "it must be old kernel"); 3501 assert(info != NULL && uc != NULL, "it must be old kernel");
4684 jio_fprintf(stderr, 4686 jio_fprintf(stderr,
4685 "Could not open pause file '%s', continuing immediately.\n", filename); 4687 "Could not open pause file '%s', continuing immediately.\n", filename);
4686 } 4688 }
4687 } 4689 }
4688 4690
4689 extern "C" {
4690
4691 /**
4692 * NOTE: the following code is to keep the green threads code
4693 * in the libjava.so happy. Once the green threads is removed,
4694 * these code will no longer be needed.
4695 */
4696 int
4697 jdk_waitpid(pid_t pid, int* status, int options) {
4698 return waitpid(pid, status, options);
4699 }
4700
4701 int
4702 fork1() {
4703 return fork();
4704 }
4705
4706 int
4707 jdk_sem_init(sem_t *sem, int pshared, unsigned int value) {
4708 return sem_init(sem, pshared, value);
4709 }
4710
4711 int
4712 jdk_sem_post(sem_t *sem) {
4713 return sem_post(sem);
4714 }
4715
4716 int
4717 jdk_sem_wait(sem_t *sem) {
4718 return sem_wait(sem);
4719 }
4720
4721 int
4722 jdk_pthread_sigmask(int how , const sigset_t* newmask, sigset_t* oldmask) {
4723 return pthread_sigmask(how , newmask, oldmask);
4724 }
4725
4726 }
4727 4691
4728 // Refer to the comments in os_solaris.cpp park-unpark. 4692 // Refer to the comments in os_solaris.cpp park-unpark.
4729 // 4693 //
4730 // Beware -- Some versions of NPTL embody a flaw where pthread_cond_timedwait() can 4694 // Beware -- Some versions of NPTL embody a flaw where pthread_cond_timedwait() can
4731 // hang indefinitely. For instance NPTL 0.60 on 2.4.21-4ELsmp is vulnerable. 4695 // hang indefinitely. For instance NPTL 0.60 on 2.4.21-4ELsmp is vulnerable.