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5 Commits

Author SHA1 Message Date
asiva@google.com b053301ccf Fix for issue 1204. 
Do not allocate a buffer of 64KB by default when writing a message out. Start
with a much smaller buffer. FOr script and full snapshots the buffer
allocated remains 64 KB.
Review URL: https://chromiumcodereview.appspot.com//10908185

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@12153 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-11 02:06:59 +00:00
asiva@google.com fdbe32e24d Use external byte arrays for token stream, this moves the token stream out of the isolate heap. For full snapshots the external byte array points to the snapshot buffer thus incurring no extra space in the C heap either. 
Heap usage stats before this change is:
New space (0k of 32768k) Old space (1085k of 1280k) Code space (0k of 0k)

Heap Usage stats after this change is:
New space (0k of 32768k) Old space (947k of 1024k) Code space (0k of 0k)

A savings of about 138k.
Review URL: https://chromiumcodereview.appspot.com//10914050

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11977 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-06 18:46:51 +00:00
asiva@google.com 08c662b1c0 Represent tokens as a compressed stream instead of an array. 
On x86:

Original sizes:
Size of isolate snapshot = 925655
New space (0k of 32768k) Old space (1700k of 1792k) Code space (0k of 0k)
out/ReleaseIA32/run_vm_tests --benchmarks
CorelibCompileAll(RunTime): 80944
CorelibIsolateStartup(RunTime): 5636
UseDartApi(RunTime): 404620
Dart2JSCompileAll(RunTime): 1379683
FrameLookup(RunTime): 45

Size with the new TokenStream implementation:
Size of isolate snapshot = 851352
New space (0k of 32768k) Old space (1368k of 1536k) Code space (0k of 0k)
out/ReleaseIA32/run_vm_tests --benchmarks
CorelibCompileAll(RunTime): 76918
CorelibIsolateStartup(RunTime): 4056
UseDartApi(RunTime): 502111
Dart2JSCompileAll(RunTime): 1251646
FrameLookup(RunTime): 45

(saves about 332k out of the original TokenStream size of 410k)

On x64:

Original sizes:
Size of isolate snapshot = 924865
New space (0k of 32768k) Old space (3234k of 3444k) Code space (0k of 0k)
out/ReleaseX64/run_vm_tests --benchmarks
CorelibCompileAll(RunTime): 109660
CorelibIsolateStartup(RunTime): 3985
UseDartApi(RunTime): 463009
Dart2JSCompileAll(RunTime): 2170309
FrameLookup(RunTime): 35

Size with the new TokenStream implementation:
Size of isolate snapshot = 849675
New space (0k of 32768k) Old space (2436k of 2560k) Code space (0k of 0k)
out/ReleaseX64/run_vm_tests --benchmarks
CorelibCompileAll(RunTime): 98716
CorelibIsolateStartup(RunTime): 2938
UseDartApi(RunTime): 509149
Dart2JSCompileAll(RunTime): 2042273
FrameLookup(RunTime): 39

(saves about 798k out of the original TokenStream size of 810k)

Token stats:
Number of tokens:   101470
  Literal tokens:   4550
    Ident tokens:   33020
Review URL: https://chromiumcodereview.appspot.com//10697055

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9539 260f80e4-7a28-3924-810f-c04153c831b5
 2012-07-11 00:11:58 +00:00
asiva@google.com 9e6f43e6e3 Prepare for writing token streams directly into a snapshot and reading it directly from the snapshot using memmove. 
Review URL: https://chromiumcodereview.appspot.com//10665035

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9098 260f80e4-7a28-3924-810f-c04153c831b5
 2012-06-26 00:18:14 +00:00
asiva@google.com 5cbd276939 Make the parser agnostic to the TokenStream implementation. This is the first step towards compacting the token stream. 
Pull the data stream writer/reader code out of snapshot into a generic file so that it can be reused into the token stream compaction implementation.
Review URL: https://chromiumcodereview.appspot.com//10632009

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9043 260f80e4-7a28-3924-810f-c04153c831b5
 2012-06-22 20:37:01 +00:00