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-rw-r--r--manual/process.texi11
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