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6983747: Remove obsolete dl_mutex lock

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Unused dl_mutex lock has been removed.

Reviewed-by: hseigel, coleenp, dholmes
This commit is contained in:
Max Ockner 2015-04-02 10:12:49 -04:00
parent afa2dbda46
commit bdbad87334
2 changed files with 0 additions and 18 deletions
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11
hotspot/src/os/linux/vm/os_linux.cpp
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@ -158,9 +158,6 @@ static pid_t _initial_pid = 0;
static int SR_signum = SIGUSR2;
sigset_t SR_sigset;
// Used to protect dlsym() calls
static pthread_mutex_t dl_mutex;
// Declarations
static void unpackTime(timespec* absTime, bool isAbsolute, jlong time);
@ -2025,14 +2022,8 @@ void * os::Linux::dll_load_in_vmthread(const char *filename, char *ebuf,
return result;
}
// glibc-2.0 libdl is not MT safe. If you are building with any glibc,
// chances are you might want to run the generated bits against glibc-2.0
// libdl.so, so always use locking for any version of glibc.
//
void* os::dll_lookup(void* handle, const char* name) {
pthread_mutex_lock(&dl_mutex);
void* res = dlsym(handle, name);
pthread_mutex_unlock(&dl_mutex);
return res;
}
@ -4641,8 +4632,6 @@ void os::init(void) {
}
// else it defaults to CLOCK_REALTIME
pthread_mutex_init(&dl_mutex, NULL);
// If the pagesize of the VM is greater than 8K determine the appropriate
// number of initial guard pages. The user can change this with the
// command line arguments, if needed.