| #include "stdio_impl.h" |
| #include "pthread_impl.h" |
| |
| #ifdef __GNUC__ |
| __attribute__((__noinline__)) |
| #endif |
| static int locking_putc(int c, FILE *f) |
| { |
| if (a_cas(&f->lock, 0, MAYBE_WAITERS-1)) __lockfile(f); |
| c = putc_unlocked(c, f); |
| if (a_swap(&f->lock, 0) & MAYBE_WAITERS) |
| __wake(&f->lock, 1, 1); |
| return c; |
| } |
| |
| static inline int do_putc(int c, FILE *f) |
| { |
| #if defined(TRUSTY_USERSPACE) |
| int l = f->lock; |
| if (l < 0 || l && (l & ~MAYBE_WAITERS) == __pthread_self()->tid) |
| return putc_unlocked(c, f); |
| return locking_putc(c, f); |
| #else |
| return putc_unlocked(c, f); |
| #endif |
| } |