Attribute file cache refactor

This is a big refactoring of the attribute file cache to be a bit
simpler which in turn makes it easier to enforce a lock around any
updates to the cache so that it can be used in a threaded env.
Tons of changes to the attributes and ignores code.

1 files changed, 44 insertions, 0 deletions

diff --git a/tests/threads/thread_helpers.c b/tests/threads/thread_helpers.c
new file mode 100644
index 000000000..25370dddb
--- /dev/null
+++ b/tests/threads/thread_helpers.c
@@ -0,0 +1,44 @@
+#include "clar_libgit2.h"
+#include "thread_helpers.h"
+
+void run_in_parallel(
+	int repeats,
+	int threads,
+	void *(*func)(void *),
+	void (*before_test)(void),
+	void (*after_test)(void))
+{
+	int r, t, *id = git__calloc(threads, sizeof(int));
+#ifdef GIT_THREADS
+	git_thread *th = git__calloc(threads, sizeof(git_thread));
+	cl_assert(th != NULL);
+#else
+	void *th = NULL;
+#endif
+
+	cl_assert(id != NULL);
+
+	for (r = 0; r < repeats; ++r) {
+		if (before_test) before_test();
+
+		for (t = 0; t < threads; ++t) {
+			id[t] = t;
+#ifdef GIT_THREADS
+			cl_git_pass(git_thread_create(&th[t], NULL, func, &id[t]));
+#else
+			cl_assert(func(&id[t]) == &id[t]);
+#endif
+		}
+
+#ifdef GIT_THREADS
+		for (t = 0; t < threads; ++t)
+			cl_git_pass(git_thread_join(th[t], NULL));
+		memset(th, 0, threads * sizeof(git_thread));
+#endif
+
+		if (after_test) after_test();
+	}
+
+	git__free(id);
+	git__free(th);
+}