Merge https://salsa.debian.org/debian/libgit2 into proxmox/bullseye

[libgit2.git] / src / util / unix / pthread.h

diff --git a/src/util/unix/pthread.h b/src/util/unix/pthread.h
new file mode 100644 (file)
index 0000000..55f4ae2
--- /dev/null
+++ b/src/util/unix/pthread.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+
+#ifndef INCLUDE_unix_pthread_h__
+#define INCLUDE_unix_pthread_h__
+
+typedef struct {
+       pthread_t thread;
+} git_thread;
+
+GIT_INLINE(int) git_threads_global_init(void) { return 0; }
+
+#define git_thread_create(git_thread_ptr, start_routine, arg) \
+       pthread_create(&(git_thread_ptr)->thread, NULL, start_routine, arg)
+#define git_thread_join(git_thread_ptr, status) \
+       pthread_join((git_thread_ptr)->thread, status)
+#define git_thread_currentid() ((size_t)(pthread_self()))
+#define git_thread_exit(retval) pthread_exit(retval)
+
+/* Git Mutex */
+#define git_mutex pthread_mutex_t
+#define git_mutex_init(a)      pthread_mutex_init(a, NULL)
+#define git_mutex_lock(a)      pthread_mutex_lock(a)
+#define git_mutex_unlock(a)     pthread_mutex_unlock(a)
+#define git_mutex_free(a)      pthread_mutex_destroy(a)
+
+/* Git condition vars */
+#define git_cond pthread_cond_t
+#define git_cond_init(c)       pthread_cond_init(c, NULL)
+#define git_cond_free(c)       pthread_cond_destroy(c)
+#define git_cond_wait(c, l)    pthread_cond_wait(c, l)
+#define git_cond_signal(c)     pthread_cond_signal(c)
+#define git_cond_broadcast(c)  pthread_cond_broadcast(c)
+
+/* 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)
+#define git_rwlock_rdunlock(a) pthread_rwlock_unlock(a)
+#define git_rwlock_wrlock(a)   pthread_rwlock_wrlock(a)
+#define git_rwlock_wrunlock(a) pthread_rwlock_unlock(a)
+#define git_rwlock_free(a)     pthread_rwlock_destroy(a)
+#define GIT_RWLOCK_STATIC_INIT PTHREAD_RWLOCK_INITIALIZER
+
+#endif