fluencelabs/musl
1
0
Fork 0
mirror of https://github.com/fluencelabs/musl synced 2025-07-31 06:11:57 +00:00
Code Issues Projects Releases Wiki Activity

fix minor bugs due to incorrect threaded-predicate semantics

Browse Source 
some functions that should have been testing whether pthread_self()
had been called and initialized the thread pointer were instead
testing whether pthread_create() had been called and actually made the
program "threaded". while it's unlikely any mismatch would occur in
real-world problems, this could have introduced subtle bugs. now, we
store the address of the main thread's thread descriptor in the libc
structure and use its presence as a flag that the thread register is
initialized. note that after fork, the calling thread (not necessarily
the original main thread) is the new main thread.
This commit is contained in:
Rich Felker
2011-04-20 21:41:45 -04:00
parent f9a6372a98
commit 870cc67977
4 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/thread/pthread_self.c
View File

@@ -6,7 +6,6 @@ static struct pthread main_thread;
static const void *dummy[1] = { 0 };
weak_alias(dummy, __pthread_tsd_main);
#undef errno
static int *errno_location()
{
return __pthread_self()->errno_ptr;
@@ -14,11 +13,10 @@ static int *errno_location()
static int init_main_thread()
{
if (__set_thread_area(&main_thread) < 0) return -1;
main_thread.canceldisable = libc.canceldisable;
main_thread.tsd = (void **)__pthread_tsd_main;
main_thread.self = &main_thread;
if (__set_thread_area(&main_thread) < 0)
return -1;
main_thread.self = libc.main_thread = &main_thread;
main_thread.errno_ptr = __errno_location();
libc.errno_location = errno_location;
main_thread.tid = main_thread.pid =