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VM Trace output fixes #1035 #1048

Merged
merged 5 commits into from
Feb 4, 2021
Merged

VM Trace output fixes #1035 #1048

merged 5 commits into from
Feb 4, 2021

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jasonwilliams
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@jasonwilliams jasonwilliams commented Jan 7, 2021

For the JS

let a = 1;
let b = 2;

Output is:

VM start up time: 0μs
Time       Instr                Top Of Stack

27μs       DefLet(0)             <empty>
3μs        One                   <empty>
35μs       InitLexical(0)        1      0x7f727f41d0c0
18μs       DefLet(1)             1      0x7f727f41d0c0
4μs        Int32(2)              1      0x7f727f41d0c0
19μs       InitLexical(1)        2      0x7f727f41d0d8

Pool
0          "a" 0x7f727f41d120
1          "b" 0x7f727f41d138

Stack
0          1 0x7f727f41d0c0
1          2 0x7f727f41d0d8

2

Currently this is on by default.
Preferably we would pass --trace to the cli to get this output, similar to other JS Cli's.

This would mean needing to add a trace option to eval() here https://github.com/boa-dev/boa/blob/master/boa/src/context.rs#L751

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codecov bot commented Jan 7, 2021

Codecov Report

Merging #1048 (3598cbe) into master (e0f226a) will decrease coverage by 0.13%.
The diff coverage is 0.00%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master    #1048      +/-   ##
==========================================
- Coverage   58.69%   58.56%   -0.14%     
==========================================
  Files         176      176              
  Lines       12389    12516     +127     
==========================================
+ Hits         7272     7330      +58     
- Misses       5117     5186      +69     
Impacted Files Coverage Δ
boa/src/context.rs 61.08% <ø> (+0.47%) ⬆️
boa/src/vm/compilation.rs 0.00% <ø> (ø)
boa/src/vm/mod.rs 0.00% <0.00%> (ø)
boa_cli/src/main.rs 33.33% <ø> (ø)
boa/src/builtins/map/ordered_map.rs 57.57% <0.00%> (-6.07%) ⬇️
boa/src/realm.rs 87.50% <0.00%> (-5.36%) ⬇️
boa/src/builtins/mod.rs 21.21% <0.00%> (-2.32%) ⬇️
...arser/expression/primary/object_initializer/mod.rs 65.65% <0.00%> (-2.09%) ⬇️
boa/src/builtins/map/mod.rs 71.08% <0.00%> (-0.92%) ⬇️
boa/src/syntax/ast/node/call/mod.rs 83.33% <0.00%> (-0.76%) ⬇️
... and 11 more

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@Razican Razican added the vm Issues and PRs related to the Boa Virtual Machine. label Jan 8, 2021
@Razican Razican added this to the v0.11.0 milestone Jan 8, 2021
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LGTM, just have 1 question.

boa/src/vm/mod.rs Outdated Show resolved Hide resolved
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I had some comments, but overall it looks good :)

boa/src/vm/mod.rs Outdated Show resolved Hide resolved
boa/src/vm/mod.rs Outdated Show resolved Hide resolved
Comment on lines +69 to +81
while self.idx < self.instructions.len() {
if self.is_trace {
self.trace_print(false);
};

while idx < self.instructions.len() {
let _timer =
BoaProfiler::global().start_event(&self.instructions[idx].to_string(), "vm");
match self.instructions[idx] {
BoaProfiler::global().start_event(&self.instructions[self.idx].to_string(), "vm");
match self.instructions[self.idx] {
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Here I see we are iterating and using the index to retrieve the instruction. Couldn't we do this with iterators?

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I’m going to merge and come back to this

@RageKnify RageKnify modified the milestones: v0.11.0, v0.12.0 Jan 14, 2021
@jasonwilliams jasonwilliams merged commit 8cdc886 into boa-dev:master Feb 4, 2021
Razican pushed a commit that referenced this pull request May 22, 2021
* no more need for dbg!()
* pass -t or --trace for tracing output
* documentation on output
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3 participants