diff options
Diffstat (limited to '05/musl-0.6.0/src/thread/pthread_self.c')
-rw-r--r-- | 05/musl-0.6.0/src/thread/pthread_self.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/05/musl-0.6.0/src/thread/pthread_self.c b/05/musl-0.6.0/src/thread/pthread_self.c new file mode 100644 index 0000000..3a4d4c5 --- /dev/null +++ b/05/musl-0.6.0/src/thread/pthread_self.c @@ -0,0 +1,33 @@ +#include "pthread_impl.h" + +static struct pthread main_thread; + +#undef errno +static int *errno_location() +{ + return __pthread_self()->errno_ptr; +} + +static int init_main_thread() +{ + main_thread.self = &main_thread; + if (__set_thread_area(&main_thread) < 0) + return -1; + syscall1(__NR_set_tid_address, (long)&main_thread.tid); + main_thread.errno_ptr = __errno_location(); + libc.errno_location = errno_location; + main_thread.tid = main_thread.pid = getpid(); + return 0; +} + +pthread_t pthread_self() +{ + static int init, failed; + if (!init) { + if (failed) return 0; + if (init_main_thread() < 0) failed = 1; + if (failed) return 0; + init = 1; + } + return __pthread_self(); +} |