diff options
author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-06-07 11:11:03 -0300 |
---|---|---|
committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-06-24 17:45:58 -0300 |
commit | baf2a265c71113a91f6971313ef191be9e77ef6a (patch) | |
tree | ad894e8766707e8c10e98b6e4c857ab315fa0276 /posix/fork.c | |
parent | 5b41b2659d35b72636ab50a28d6815cad9c22a66 (diff) | |
download | glibc-baf2a265c71113a91f6971313ef191be9e77ef6a.tar.gz glibc-baf2a265c71113a91f6971313ef191be9e77ef6a.tar.xz glibc-baf2a265c71113a91f6971313ef191be9e77ef6a.zip |
misc: Optimize internal usage of __libc_single_threaded
By adding an internal alias to avoid the GOT indirection. On some architecture, __libc_single_thread may be accessed through copy relocations and thus it requires to update also the copies default copy. This is done by adding a new internal macro, libc_hidden_data_{proto,def}, which has an addition argument that specifies the alias name (instead of default __GI_ one). Checked on x86_64-linux-gnu and i686-linux-gnu. Reviewed-by: Fangrui Song <maskray@google.com>
Diffstat (limited to 'posix/fork.c')
-rw-r--r-- | posix/fork.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/posix/fork.c b/posix/fork.c index e1be3422ea..987916a175 100644 --- a/posix/fork.c +++ b/posix/fork.c @@ -45,7 +45,7 @@ __libc_fork (void) requirement for fork (Austin Group tracker issue #62) this is best effort to make is async-signal-safe at least for single-thread case. */ - bool multiple_threads = __libc_single_threaded == 0; + bool multiple_threads = __libc_single_threaded_internal == 0; uint64_t lastrun; lastrun = __run_prefork_handlers (multiple_threads); |