diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/thread-utils.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/thread-utils.h b/src/thread-utils.h index 819e24e7b..371dc0b26 100644 --- a/src/thread-utils.h +++ b/src/thread-utils.h @@ -40,6 +40,10 @@ typedef git_atomic git_atomic_ssize; #ifdef GIT_THREADS +#if defined(GIT_WIN32) && _WIN32_WINNT < 0x0600 +# error "Unsupported Windows version for thread support" +#endif + #define git_thread pthread_t #define git_thread_create(thread, attr, start_routine, arg) \ pthread_create(thread, attr, start_routine, arg) @@ -62,7 +66,15 @@ typedef git_atomic git_atomic_ssize; #define git_cond_signal(c) pthread_cond_signal(c) #define git_cond_broadcast(c) pthread_cond_broadcast(c) -/* Pthreads rwlock */ +/* Pthread (-ish) rwlock + * + * This differs from normal pthreads rwlocks in two ways: + * 1. Separate APIs for releasing read locks and write locks (as + * opposed to the pure POSIX API which only has one unlock fn) + * 2. You should not use recursive read locks (i.e. grabbing a read + * lock in a thread that already holds a read lock) because the + * Windows implementation doesn't support it + */ #define git_rwlock pthread_rwlock_t #define git_rwlock_init(a) pthread_rwlock_init(a, NULL) #define git_rwlock_rdlock(a) pthread_rwlock_rdlock(a) |