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6588413: Use -fvisibility=hidden for gcc compiles

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Add option for gcc 4 and above, define JNIEXPORT and JNIIMPORT to visibility=default, add for jio_snprintf and others since -fvisibility=hidden overrides --version-script definitions.

Reviewed-by: kamg, never
This commit is contained in:
Coleen Phillimore 2011-02-01 11:23:19 -05:00
parent 7b4f8073f0
commit cba53708ec
17 changed files with 50 additions and 82 deletions
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46
hotspot/src/os/linux/vm/os_linux.cpp
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@ -2509,8 +2509,10 @@ char *os::scan_pages(char *start, char* end, page_info* page_expected, page_info
return end;
}
extern "C" void numa_warn(int number, char *where, ...) { }
extern "C" void numa_error(char *where) { }
// Something to do with the numa-aware allocator needs these symbols
extern "C" JNIEXPORT void numa_warn(int number, char *where, ...) { }
extern "C" JNIEXPORT void numa_error(char *where) { }
extern "C" JNIEXPORT int fork1() { return fork(); }
// If we are running with libnuma version > 2, then we should
@ -3483,7 +3485,7 @@ bool os::is_interrupted(Thread* thread, bool clear_interrupted) {
// Note that the VM will print warnings if it detects conflicting signal
// handlers, unless invoked with the option "-XX:+AllowUserSignalHandlers".
//
extern "C" int
extern "C" JNIEXPORT int
JVM_handle_linux_signal(int signo, siginfo_t* siginfo,
void* ucontext, int abort_if_unrecognized);
@ -4678,44 +4680,6 @@ void os::pause() {
}
}
extern "C" {
/**
* NOTE: the following code is to keep the green threads code
* in the libjava.so happy. Once the green threads is removed,
* these code will no longer be needed.
*/
int
jdk_waitpid(pid_t pid, int* status, int options) {
return waitpid(pid, status, options);
}
int
fork1() {
return fork();
}
int
jdk_sem_init(sem_t *sem, int pshared, unsigned int value) {
return sem_init(sem, pshared, value);
}
int
jdk_sem_post(sem_t *sem) {
return sem_post(sem);
}
int
jdk_sem_wait(sem_t *sem) {
return sem_wait(sem);
}
int
jdk_pthread_sigmask(int how , const sigset_t* newmask, sigset_t* oldmask) {
return pthread_sigmask(how , newmask, oldmask);
}
}
// Refer to the comments in os_solaris.cpp park-unpark.
//