threads: Fix the shared global state with TLS

See `global.c` for a description of what we're doing.

When libgit2 is built with GIT_THREADS support, the threading system
must be explicitly initialized with `git_threads_init()`.

1 files changed, 24 insertions, 0 deletions

diff --git a/src/global.h b/src/global.h
new file mode 100644
index 000000000..641f47cbc
--- /dev/null
+++ b/src/global.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2009-2011 the libgit2 contributors
+ *
+ * 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_global_h__
+#define INCLUDE_global_h__
+
+#include "mwindow.h"
+
+typedef struct {
+	struct {
+		char last[1024];
+	} error;
+
+	git_mwindow_ctl mem_ctl;
+} git_global_st;
+
+git_global_st *git__global_state(void);
+
+#define GIT_GLOBAL (git__global_state())
+
+#endif