added new asserts to interval interface

lib/include/srslte/adt/bounded_bitset.h

@@ -55,7 +55,8 @@ public:
       std::string msg =
           "ERROR: new size=" + std::to_string(new_size) + " exceeds bitset capacity=" + std::to_string(max_size());
       THROW_BAD_ACCESS(msg.c_str());
-    } else if (new_size == cur_size) {
+    }
+    if (new_size == cur_size) {
       return;
     }
     cur_size = new_size;
@@ -65,7 +66,7 @@ public:
     }
   }
 
-  void set(size_t pos, bool val) noexcept
+  void set(size_t pos, bool val)
   {
     assert_within_bounds_(pos, true);
     if (val) {
@@ -75,13 +76,13 @@ public:
     }
   }
 
-  void set(size_t pos) noexcept
+  void set(size_t pos)
   {
     assert_within_bounds_(pos, true);
     set_(pos);
   }
 
-  void reset(size_t pos) noexcept
+  void reset(size_t pos)
   {
     assert_within_bounds_(pos, true);
     reset_(pos);
@@ -94,7 +95,7 @@ public:
     }
   }
 
-  bool test(size_t pos) const noexcept
+  bool test(size_t pos) const
   {
     assert_within_bounds_(pos, true);
     return test_(pos);
@@ -109,7 +110,7 @@ public:
     return *this;
   }
 
-  bounded_bitset<N, reversed>& fill(size_t startpos, size_t endpos, bool value = true) noexcept
+  bounded_bitset<N, reversed>& fill(size_t startpos, size_t endpos, bool value = true)
   {
     assert_within_bounds_(startpos, false);
     assert_within_bounds_(endpos, false);
@@ -151,7 +152,7 @@ public:
     return false;
   }
 
-  bool any(size_t start, size_t stop) const noexcept
+  bool any(size_t start, size_t stop) const
   {
     assert_within_bounds_(start, false);
     assert_within_bounds_(stop, false);
@@ -227,7 +228,7 @@ public:
     return ret;
   }
 
-  std::string to_string() const noexcept
+  std::string to_string() const
   {
     std::string s;
     s.assign(size(), '0');

lib/include/srslte/adt/interval.h

@@ -22,6 +22,7 @@
 #ifndef SRSLTE_INTERVAL_H
 #define SRSLTE_INTERVAL_H
 
+#include "adt_utils.h"
 #include <cassert>
 #include <string>
 #include <type_traits>
@@ -48,28 +49,24 @@ public:
 
   T length() const { return stop_ - start_; }
 
-  void inc_length(int n)
+  void set(T start_point, T stop_point)
   {
-    stop_ += n;
-    assert(stop_ >= start_);
-  }
-
-  void set_length(T len)
-  {
-    assert(len >= 0);
-    stop_ = start_ + len;
-  }
-
-  void set_start(T start_point)
-  {
-    assert(start_point <= stop_);
+    assert(stop_point >= start_point);
     start_ = start_point;
+    stop_  = stop_point;
   }
 
-  void set_stop(T stop_point)
+  void expand_by(T len)
   {
-    assert(start_ <= stop_point);
-    stop_ = stop_point;
+    // Detect length overflows
+    assert(std::is_unsigned<T>::value or (len >= 0 or length() >= -len));
+    stop_ += len;
+  }
+
+  void expand_to(T len)
+  {
+    assert(std::is_unsigned<T>::value or len >= 0);
+    stop_ = start_ + len;
   }
 
   void displace_by(int offset)

lib/test/adt/interval_test.cc

@@ -74,11 +74,29 @@ int test_interval_intersect()
   return SRSLTE_SUCCESS;
 }
 
+int test_interval_expand()
+{
+  srslte::interval<uint32_t> I{};
+  srslte::interval<int>      I2{};
+
+  I.expand_by(5);
+  TESTASSERT(I.length() == 5);
+  I.expand_by(-5);
+  TESTASSERT(I.length() == 0);
+
+  I2.expand_by(3);
+  TESTASSERT(I2.length() == 3);
+  //  I2.expand_by(-4);
+
+  return SRSLTE_SUCCESS;
+}
+
 int main()
 {
   TESTASSERT(test_interval_init() == SRSLTE_SUCCESS);
   TESTASSERT(test_interval_overlaps() == SRSLTE_SUCCESS);
   TESTASSERT(test_interval_contains() == SRSLTE_SUCCESS);
   TESTASSERT(test_interval_intersect() == SRSLTE_SUCCESS);
+  TESTASSERT(test_interval_expand() == SRSLTE_SUCCESS);
   return 0;
 }

srsenb/src/stack/mac/scheduler_grid.cc

@@ -538,7 +538,7 @@ bool sf_grid_t::find_ul_alloc(uint32_t L, prb_interval* alloc) const
       alloc->displace_to(n);
     }
     if (not ul_mask.test(n)) {
-      alloc->inc_length(1);
+      alloc->expand_by(1);
     } else if (alloc->length() > 0) {
       // avoid edges
       if (n < 3) {
@@ -554,7 +554,7 @@ bool sf_grid_t::find_ul_alloc(uint32_t L, prb_interval* alloc) const
 
   // Make sure L is allowed by SC-FDMA modulation
   while (!srslte_dft_precoding_valid_prb(alloc->length())) {
-    alloc->inc_length(-1);
+    alloc->expand_by(-1);
   }
   return alloc->length() == L;
 }

srsenb/src/stack/mac/scheduler_metric.cc

@@ -212,7 +212,7 @@ bool ul_metric_rr::find_allocation(uint32_t L, prb_interval* alloc)
       alloc->displace_to(n);
     }
     if (not used_rb->test(n)) {
-      alloc->inc_length(1);
+      alloc->expand_by(1);
     } else if (alloc->length() > 0) {
       // avoid edges
       if (n < 3) {
@@ -228,7 +228,7 @@ bool ul_metric_rr::find_allocation(uint32_t L, prb_interval* alloc)
 
   // Make sure L is allowed by SC-FDMA modulation
   while (!srslte_dft_precoding_valid_prb(alloc->length())) {
-    alloc->inc_length(-1);
+    alloc->expand_by(-1);
   }
   return alloc->length() == L;
 }