poc.c: implement gettid

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/poc.c b/poc.c
index 77a3bfe..752f60e 100644
--- a/poc.c
+++ b/poc.c
@@ -14,6 +14,10 @@
 #define FUTEX_WAIT_REQUEUE_PI 11
 #define FUTEX_CMP_REQUEUE_PI 12
 
+__always_inline pid_t gettid() {
+    return syscall(SYS_gettid);
+}
+
 __always_inline void userlock_wait(volatile const int *userlock) {
     while (USERLOCK_OCCUPIED == *userlock) {
         usleep(10);