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ntbang0901
a3d1e57f3e
Adds a Memory tab to the Debug tool window for JVM sessions: loaded classes with instance counts and shallow sizes (with deltas between refreshes), read over the HotSpot attach listener (`GC.class_histogram`), falling back to counting reachable objects through the debugger on JDKs that cannot answer while suspended. While paused, a class's instances, an instance's fields and its referrers are listed through a JDWP link (the Kotlin adapter's path, and a jdtls bundle `java/jvm-inspect` for java-debug). Debug launches started by the IDE get `-XX:+StartAttachListener` unless the user's VM options decide otherwise (not on Windows). New crates: ide-jdwp, ide-jvm-attach, ide-jvm-inspect. The bundled jar rebuilds byte-for-byte from build.py against the pinned JDT LS plugins. Co-authored-by: ntbang0901 <121003585+ntbang0901@users.noreply.github.com>
40 lines
1.9 KiB
Python
40 lines
1.9 KiB
Python
"""Reproducible bundle build: python3 build.py /path/to/jdtls [--test] (JDT LS 1.63.0, Java 25; target Java 21).
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--test compiles tests/SelfTest.java with the sources and runs it; it does not write the jar."""
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import os
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import pathlib
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import subprocess
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import sys
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import tempfile
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import zipfile
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def run(command):
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code = subprocess.run(command).returncode
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if code:
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sys.exit(f'{command[-1]} failed with exit status {code}')
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root = pathlib.Path(__file__).resolve().parent
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test = '--test' in sys.argv[1:]
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plugins = pathlib.Path(next(a for a in sys.argv[1:] if a != '--test')).resolve() / 'plugins'
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with tempfile.TemporaryDirectory() as tmp:
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tmp = pathlib.Path(tmp)
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# org.eclipse.jdt.debug ships the JDI model as a nested jar, which javac cannot read in place.
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with zipfile.ZipFile(next(plugins.glob('org.eclipse.jdt.debug_*.jar'))) as debug:
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(tmp / 'jdimodel.jar').write_bytes(debug.read('jdimodel.jar'))
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classpath = [str(p) for p in sorted(plugins.glob('*.jar'))] + [str(tmp / 'jdimodel.jar')]
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out = tmp / 'classes'
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sources = sorted((root / 'src').rglob('*.java')) + ([root / 'tests' / 'SelfTest.java'] if test else [])
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run(['java', '-cp', str(plugins / '*'),
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'org.eclipse.jdt.internal.compiler.batch.Main', '-21', '-proc:none',
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'-classpath', os.pathsep.join(classpath),
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'-d', str(out), *[str(p) for p in sources]])
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if test:
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run(['java', '-cp', os.pathsep.join([str(out), *classpath]), 'ai.openidea.jvminspect.SelfTest'])
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sys.exit(0)
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with zipfile.ZipFile(root / 'openidea-jvm-inspect.jar', 'w', zipfile.ZIP_DEFLATED) as jar:
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files = {'META-INF/MANIFEST.MF': root / 'MANIFEST.MF', 'plugin.xml': root / 'plugin.xml'}
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files.update({p.relative_to(out).as_posix(): p for p in out.rglob('*.class')})
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for name, path in sorted(files.items()):
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jar.writestr(zipfile.ZipInfo(name, (2026, 1, 1, 0, 0, 0)), path.read_bytes())
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