Add progress update. (#308)

src/phase1.hpp

@@ -598,6 +598,7 @@ std::vector<uint64_t> RunPhase1(
     uint8_t const flags)
 {
     std::cout << "Computing table 1" << std::endl;
+    std::cout << "Progress update: 0.01" << std::endl;
     globals.stripe_size = stripe_size;
     globals.num_threads = num_threads;
     Timer f1_start_time;
@@ -644,6 +645,7 @@ std::vector<uint64_t> RunPhase1(
 
     // For tables 1 through 6, sort the table, calculate matches, and write
     // the next table. This is the left table index.
+    double progress_percent[] = {0.06, 0.12, 0.2, 0.28, 0.36, 0.42};
     for (uint8_t table_index = 1; table_index < 7; table_index++) {
         Timer table_timer;
         uint8_t const metadata_size = kVectorLens[table_index + 1] * k;
@@ -664,6 +666,7 @@ std::vector<uint64_t> RunPhase1(
         }
 
         std::cout << "Computing table " << int{table_index + 1} << std::endl;
+        std::cout << "Progress update: " << progress_percent[table_index - 1] << std::endl;
         // Start of parallel execution
 
         FxCalculator f(k, table_index + 1);  // dummy to load static table

src/phase2.hpp

@@ -94,10 +94,11 @@ Phase2Results RunPhase2(
     // note that we don't iterate over table_index=1. That table is special
     // since it contains different data. We'll do an extra scan of table 1 at
     // the end, just to compact it.
+    double progress_percent[] = {0.43, 0.48, 0.51, 0.55, 0.58, 0.61};
     for (int table_index = 7; table_index > 1; --table_index) {
 
         std::cout << "Backpropagating on table " << table_index << std::endl;
-
+        std::cout << "Progress update: " << progress_percent[7 - table_index] << std::endl;
         Timer scan_timer;
 
         next_bitfield.clear();

src/phase3.hpp

@@ -160,11 +160,13 @@ Phase3Results RunPhase3(
     // new_pos), where new_pos is the position in the table, where it's sorted by line_point,
     // and the line_points are written to disk to a final table. Finally, table_i is sorted by
     // sort_key. This allows us to compare to the next table.
+    double progress_percent[] = {0.66, 0.73, 0.79, 0.85, 0.92, 0.98};
     for (int table_index = 1; table_index < 7; table_index++) {
         Timer table_timer;
         Timer computation_pass_1_timer;
         std::cout << "Compressing tables " << table_index << " and " << (table_index + 1)
                   << std::endl;
+        std::cout << "Progress update: " << progress_percent[table_index - 1] << std::endl;
 
         // The park size must be constant, for simplicity, but must be big enough to store EPP
         // entries. entry deltas are encoded with variable length, and thus there is no