sched: prereserve pdcch_slot_resource_allocator dfs trees

Author: frankist

lib/scheduler/pdcch_scheduling/pdcch_slot_resource_allocator.cpp

@@ -15,6 +15,12 @@
 
 using namespace srsran;
 
+pdcch_slot_allocator::pdcch_slot_allocator()
+{
+  dfs_tree.reserve(MAX_DL_PDCCH_PDUS_PER_SLOT + MAX_UL_PDCCH_PDUS_PER_SLOT);
+  saved_dfs_tree.reserve(MAX_DL_PDCCH_PDUS_PER_SLOT + MAX_UL_PDCCH_PDUS_PER_SLOT);
+}
+
 pdcch_slot_allocator::~pdcch_slot_allocator() {}
 
 void pdcch_slot_allocator::clear()

lib/scheduler/pdcch_scheduling/pdcch_slot_resource_allocator.h

@@ -42,6 +42,7 @@ class pdcch_slot_allocator
     unsigned record_index;
   };
 
+  pdcch_slot_allocator();
   ~pdcch_slot_allocator();
 
   /// Erase the current PDCCH allocations and stored context for this slot.