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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/jit-test/tests/parser/stencil-eager-delazify.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/parser/stencil-eager-delazify.js')
-rw-r--r-- | js/src/jit-test/tests/parser/stencil-eager-delazify.js | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/parser/stencil-eager-delazify.js b/js/src/jit-test/tests/parser/stencil-eager-delazify.js new file mode 100644 index 0000000000..d638b16e78 --- /dev/null +++ b/js/src/jit-test/tests/parser/stencil-eager-delazify.js @@ -0,0 +1,75 @@ +// |jit-test| skip-if: helperThreadCount() === 0 || isLcovEnabled() + +// Extra GCs can empty the StencilCache to reclaim memory. This lines +// re-configure the gc-zeal setting to prevent this from happening in this test +// case which waits for the cache to contain some entry. +if ('gczeal' in this) + gczeal(0); + +let u = 0; + +// At each function, create `width` inner functions. +let width = 2; +// Depth of inner functions. +let depth = 4; +// Number of additional parser & delazification workload running concurrently +// with the one we are attempting to measure, such that we can see differences +// in the report of `isInStencilCache`. +let load = 14; + +// Return the number of function generated by a to `depthFirstExec` given the +// same parameters. +function count(w, d) { + return (Math.pow(w, d + 1) - 1) / (w - 1); +} + +// Generate a source code with a large number of inner functions, such that +// eager delazification can be observe while running JS code concurrently. +function depthFirstExec(indent, name, w, d) { + let fun = `${indent}function ${name} (arg) {\n`; + let inner = ""; + let val = `arg + isInStencilCache(${name})`; + if (d > 0) { + for (let i = 0; i < w; i++) { + inner += depthFirstExec(`${indent} `, `${name}_${i}`, w, d - 1); + val = `${name}_${i}(${val})`; + } + } + fun += inner; + fun += `${indent} return ${u} + ${val} - ${u};\n`; + fun += `${indent}}\n`; + u += 1; + return fun; +}; + +const options = { + fileName: "depthFirstExec.js", + lineNumber: 1, + eagerDelazificationStrategy: "ConcurrentDepthFirst", +}; +let script = depthFirstExec("", "raceMe", width, depth); + +let jobs = []; +for (let i = 0; i < load; i++) { + // Spin up extra compilation workload... + jobs.push(offThreadCompileToStencil(script, options)); +} + +const stencil = finishOffThreadStencil(jobs[0]); +evalStencil(stencil, options); + +waitForStencilCache(raceMe); +let start = raceMe(0); +let mid = raceMe(0); +let end = raceMe(0); + +// The garbage collector should clear the cache and suppress all delazification +// tasks. +gc(); +let afterGc = raceMe(0); + +assertEq(1 <= start, true); +assertEq(start <= mid, true); +assertEq(mid <= end, true); +assertEq(end <= count(width, depth), true); +assertEq(afterGc, 0); |