Merge branch 'bp/read-cache-parallel'

A new extension to the index file has been introduced, which allows
the file to be read in parallel.

* bp/read-cache-parallel:
  read-cache: load cache entries on worker threads
  ieot: add Index Entry Offset Table (IEOT) extension
  read-cache: load cache extensions on a worker thread
  config: add new index.threads config setting
  eoie: add End of Index Entry (EOIE) extension
  read-cache: clean up casting and byte decoding
  read-cache.c: optimize reading index format v4

1 files changed, 18 insertions, 0 deletions

diff --git a/config.c b/config.c
index 3555c63..4051e38 100644
--- a/config.c
+++ b/config.c
@@ -2289,6 +2289,24 @@ int git_config_get_fsmonitor(void)
 	return 0;
 }
 
+int git_config_get_index_threads(void)
+{
+	int is_bool, val = 0;
+
+	val = git_env_ulong("GIT_TEST_INDEX_THREADS", 0);
+	if (val)
+		return val;
+
+	if (!git_config_get_bool_or_int("index.threads", &is_bool, &val)) {
+		if (is_bool)
+			return val ? 0 : 1;
+		else
+			return val;
+	}
+
+	return 0; /* auto */
+}
+
 NORETURN
 void git_die_config_linenr(const char *key, const char *filename, int linenr)
 {