Displaying 2 results from an estimated 2 matches for "threadlocaldata".
2017 Nov 16
2
question about xray tls data initialization
...written as
// Using pthread_once(...) to initialize the thread-local data structures
but at line 175, 183, code written as
thread_local pthread_key_t key;
// Ensure that we only actually ever do the pthread initialization once.
thread_local bool UNUSED Unused = [] {
new (&TLSBuffer) ThreadLocalData();
auto result = pthread_key_create(&key, +[](void *) {
auto &TLD = *reinterpret_cast<ThreadLocalData *>(&TLSBuffer);
I'm confused that pthread_key_t and Unused are both thread_local
variable, doesn't it mean the following lambda will run for each
thread , and...
2017 Nov 21
2
question about xray tls data initialization
...to initialize the thread-local data structures
>
>
> but at line 175, 183, code written as
>
> thread_local pthread_key_t key;
>
> // Ensure that we only actually ever do the pthread initialization once.
> thread_local bool UNUSED Unused = [] {
> new (&TLSBuffer) ThreadLocalData();
> auto result = pthread_key_create(&key, +[](void *) {
> auto &TLD = *reinterpret_cast<ThreadLocalData *>(&TLSBuffer);
>
>
> I'm confused that pthread_key_t and Unused are both thread_local
> variable, doesn't it mean the following lambda will...