[v2,14/42] tools/nolibc: Implement gettid()

Commit Message

Mark Brown Oct. 18, 2021, 7:08 p.m. UTC

Allow test programs to determine their thread ID.

Signed-off-by: Mark Brown <[e-mail]>
Cc: Willy Tarreau <[e-mail]>
---
 tools/include/nolibc/nolibc.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Comments

Willy Tarreau Oct. 19, 2021, 5:06 a.m. UTC | #1

On Mon, Oct 18, 2021 at 08:08:30PM +0100, Mark Brown wrote:
> Allow test programs to determine their thread ID.

Now queue, thank you Mark!
Willy

Patch

diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index 3430667b0d24..fea8aace0119 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -1555,6 +1555,12 @@  pid_t sys_getpid(void)
 	return my_syscall0(__NR_getpid);
 }
 
+static __attribute__((unused))
+pid_t sys_gettid(void)
+{
+	return my_syscall0(__NR_gettid);
+}
+
 static __attribute__((unused))
 int sys_gettimeofday(struct timeval *tv, struct timezone *tz)
 {
@@ -2013,6 +2019,18 @@  pid_t getpid(void)
 	return ret;
 }
 
+static __attribute__((unused))
+pid_t gettid(void)
+{
+	pid_t ret = sys_gettid();
+
+	if (ret < 0) {
+		SET_ERRNO(-ret);
+		ret = -1;
+	}
+	return ret;
+}
+
 static __attribute__((unused))
 int gettimeofday(struct timeval *tv, struct timezone *tz)
 {