Fix display units of stats counters

[tmcdonell]

This PR fixes the units that stats are displayed in. Previously all counters were printed in binary mode, which is not always the natural unit (e.g. commits: 35.4 Ki vs commits: 40.5 K).

Example: env MIMALLOC_SHOW_STATS=1 ./build/mimalloc-test-stress

Before

subproc 0
 blocks          peak       total     current       block      total#   
  bin S    1:    21.4 KiB    73.2 MiB     0           8   B       9.6 M    ok
  bin S    4:    86.8 KiB   291.9 MiB     0          32   B       9.5 M    ok
  bin S    6:   133.9 KiB   437.9 MiB     0          48   B       9.5 M    ok
  bin S    9:   211.6 KiB   731.1 MiB     0          80   B       9.5 M    ok
  bin S   13:   409.5 KiB     1.4 GiB   160   B     160   B       9.5 M    not all freed
  bin S   17:    25.7 KiB   456.1 KiB     1.2 KiB   320   B       1.4 K    not all freed
  bin S   18:   384   B     384   B       0         384   B       1        ok
  bin S   21:     0           3.0 GiB     0         640   B       5.0 M    ok
  bin S   23:    28.1 KiB   165.1 MiB     0         896   B     193.3 K    ok
  bin S   25:     1.2 KiB     1.2 KiB     1.2 KiB     1.2 KiB     1        not all freed
  bin S   27:    40.4 KiB   338.3 MiB     0           1.7 KiB   198.0 K    ok
  bin S   31:   319.7 KiB   691.9 MiB     0           3.5 KiB   202.4 K    ok
  bin S   35:   576.2 KiB     1.2 GiB     0           7.0 KiB   191.1 K    ok
  bin M   39:     1.1 MiB     2.6 GiB     0          14.0 KiB   197.1 K    ok
  bin M   41:     3.5 MiB     8.3 MiB     0          20.0 KiB   429        ok
  bin M   43:     0           1.3 GiB     0          28.1 KiB    50.7 K    ok
  bin M   45:     0           7.8 MiB     0          40.1 KiB   200        ok
  bin M   47:     0           2.7 GiB     0          56.2 KiB    52.3 K    ok
  bin M   48:     0          12.5 MiB     0          64.2 KiB   200        ok
  bin M   49:     0          15.6 MiB     0          80.3 KiB   200        ok
  bin L   51:     0          21.8 MiB     0         112.4 KiB   200        ok
  bin L   52:     0          25.0 MiB     0         128.5 KiB   200        ok
  bin L   53:     0          62.5 MiB     0         160.6 KiB   400        ok

  binned    :     6.3 Mi     14.9 Gi      2.6 Ki                           not all freed
  huge      :     0           1.2 Gi      0                                ok
  total     :     6.3 MiB    16.2 GiB     2.6 KiB                          
  malloc req:                12.9 GiB

 pages           peak       total     current       block      total#   
  touched   :    11.6 GiB    11.6 GiB    11.6 GiB                          
  pages     :   550         106.4 Ki      3                                not all freed
  abandoned :   513         278.4 Ki      0                                ok
  reclaima  :    48.0 Ki 
  reclaimf  :   194.4 Ki 
  reabandon :    40.4 Ki 
  waits     :     0      
  extended  :     1.5 Mi 
  retire    :    13.4 Ki 
  searches  :     2.2 avg

 arenas          peak       total     current       block      total#   
  reserved  :   324.4 MiB   324.6 MiB   324.3 MiB                          
  committed :   286.8 MiB     8.4 GiB    37.6 MiB                          
  reset     :     0      
  purged    :     8.4 Gi 
  arenas    :     5      
  rollback  :     0      
  mmaps     :     8      
  commits   :    35.4 Ki 
  resets    :     0      
  purges    :    33.9 Ki 
  guarded   :     0      
  heaps     :     6          51           1                                

 process         peak       total     current       block      total#   
  threads   :    33           1.5 Ki      1                                
  numa nodes:     1
  elapsed   :    28.777 s
  process   : user: 151.844 s, system: 7.745 s, faults: 0, peak rss: 222.8 MiB, peak commit: 286.8 MiB

After

subproc 0
 blocks          peak       total     current       block      total#   
  bin S    1:    22.2 KiB    73.2 MiB     0           8   B       9.6 M    ok
  bin S    4:    88.7 KiB   291.9 MiB     0          32   B       9.5 M    ok
  bin S    6:   132.7 KiB   437.9 MiB     0          48   B       9.5 M    ok
  bin S    9:   205.0 KiB   731.1 MiB     0          80   B       9.5 M    ok
  bin S   13:   416.7 KiB     1.4 GiB   160   B     160   B       9.5 M    not all freed
  bin S   17:    25.7 KiB   456.1 KiB     1.2 KiB   320   B       1.4 K    not all freed
  bin S   18:   384   B     384   B       0         384   B       1        ok
  bin S   21:     0           3.0 GiB     0         640   B       5.0 M    ok
  bin S   23:    28.9 KiB   165.1 MiB     0         896   B     193.3 K    ok
  bin S   25:     1.2 KiB     1.2 KiB     1.2 KiB     1.2 KiB     1        not all freed
  bin S   27:    49.1 KiB   338.3 MiB     0           1.7 KiB   198.0 K    ok
  bin S   31:   365.4 KiB   691.9 MiB     0           3.5 KiB   202.4 K    ok
  bin S   35:   484.8 KiB     1.2 GiB     0           7.0 KiB   191.1 K    ok
  bin M   39:     1.1 MiB     2.6 GiB     0          14.0 KiB   197.1 K    ok
  bin M   41:     3.7 MiB     8.5 MiB     0          20.0 KiB   436        ok
  bin M   43:     0           1.3 GiB     0          28.1 KiB    50.7 K    ok
  bin M   45:     0           7.8 MiB     0          40.1 KiB   200        ok
  bin M   47:     0           2.7 GiB     0          56.2 KiB    52.3 K    ok
  bin M   48:     0          12.5 MiB     0          64.2 KiB   200        ok
  bin M   49:     0          15.6 MiB     0          80.3 KiB   200        ok
  bin L   51:     0          21.8 MiB     0         112.4 KiB   200        ok
  bin L   52:     0          25.0 MiB     0         128.5 KiB   200        ok
  bin L   53:     0          62.5 MiB     0         160.6 KiB   400        ok

  binned    :     6.4 MiB    14.9 GiB     2.6 KiB                          not all freed
  huge      :     0           1.2 GiB     0                                ok
  total     :     6.4 MiB    16.2 GiB     2.6 KiB                          
  malloc req:                12.9 GiB

 pages           peak       total     current       block      total#   
  touched   :    11.7 GiB    11.7 GiB    11.7 GiB                          
  pages     :   543   B     107.0 KiB     3   B                            not all freed
  abandoned :   504   B     278.3 KiB     0                                ok
  reclaima  :    48.0 K  
  reclaimf  :   198.2 K  
  reabandon :    40.9 K  
  waits     :     0      
  extended  :     1.6 M  
  retire    :    13.6 K  
  searches  :     2.1 avg

 arenas          peak       total     current       block      total#   
  reserved  :   388.4 MiB   388.7 MiB   388.3 MiB                          
  committed :   288.3 MiB     8.7 GiB    42.3 MiB                          
  reset     :     0      
  purged    :     8.6 GiB
  arenas    :     6      
  rollback  :     0      
  mmaps     :     9      
  commits   :    40.5 K  
  resets    :     0      
  purges    :    38.8 K  
  guarded   :     0      
  heaps     :     6          51                      1      

 process         peak       total     current       block      total#   
  threads   :    33           1.6 K                  1      
  numa nodes:     1
  elapsed   :    29.706 s
  process   : user: 153.935 s, system: 8.472 s, faults: 0, peak rss: 229.1 MiB, peak commit: 288.3 MiB

[daanx]

Thank you for the PR! I studied it but decided to take a slightly different approach. Let me know if this works for you. Thanks again!