diff options
Diffstat (limited to 'libbuild2/scheduler.hxx')
| -rw-r--r-- | libbuild2/scheduler.hxx | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/libbuild2/scheduler.hxx b/libbuild2/scheduler.hxx index dcde79b..76b3263 100644 --- a/libbuild2/scheduler.hxx +++ b/libbuild2/scheduler.hxx @@ -301,14 +301,25 @@ namespace build2 // If the maximum threads or task queue depth arguments are unspecified, // then appropriate defaults are used. // + // Passing non-zero orig_max_active (normally the real max active) allows + // starting up a pre-tuned scheduler. In particular, starting a pre-tuned + // to serial scheduler is relatively cheap since starting the deadlock + // detection thread is delayed until the scheduler is re-tuned. + // explicit scheduler (size_t max_active, size_t init_active = 1, size_t max_threads = 0, size_t queue_depth = 0, - optional<size_t> max_stack = nullopt) + optional<size_t> max_stack = nullopt, + size_t orig_max_active = 0) { - startup (max_active, init_active, max_threads, queue_depth, max_stack); + startup (max_active, + init_active, + max_threads, + queue_depth, + max_stack, + orig_max_active); } // Start the scheduler. @@ -318,7 +329,8 @@ namespace build2 size_t init_active = 1, size_t max_threads = 0, size_t queue_depth = 0, - optional<size_t> max_stack = nullopt); + optional<size_t> max_stack = nullopt, + size_t orig_max_active = 0); // Return true if the scheduler was started up. // |