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| author | Florian Weimer <fweimer@redhat.com> | 2019-02-02 15:17:02 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2019-02-08 11:27:55 +0100 |
| commit | 1d0fc213824eaa2a8f8c4385daaa698ee8fb7c92 (patch) | |
| tree | a1979a3d4ef860e9f4565aab20cb2549b0a3303e /manual/process.texi | |
| parent | f289e656ec8221756519a601042bc9fbe1b310fb (diff) | |
| download | glibc-1d0fc213824eaa2a8f8c4385daaa698ee8fb7c92.zip glibc-1d0fc213824eaa2a8f8c4385daaa698ee8fb7c92.tar.gz glibc-1d0fc213824eaa2a8f8c4385daaa698ee8fb7c92.tar.bz2 | |
Linux: Add gettid system call wrapper [BZ #6399]
This commit adds gettid to <unistd.h> on Linux, and not to the
kernel-independent GNU API.
gettid is now supportable on Linux because too many things assume a
1:1 mapping between libpthread threads and kernel threads.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Diffstat (limited to 'manual/process.texi')
| -rw-r--r-- | manual/process.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/manual/process.texi b/manual/process.texi index 652b000..5728bde 100644 --- a/manual/process.texi +++ b/manual/process.texi @@ -228,6 +228,17 @@ The @code{getppid} function returns the process ID of the parent of the current process. @end deftypefun +@deftypefun pid_t gettid (void) +@standards{Linux, unistd.h} +@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}} +The @code{gettid} function returns the thread ID of the current +thread. The returned value is obtained from the Linux kernel and is +not subject to caching. See the discussion of thread IDs above, +especially regarding reuse of the IDs of threads which have exited. + +This function is specific to Linux. +@end deftypefun + @node Creating a Process @section Creating a Process |