tools/perf/tests/shell/test_java_symbol.sh

Source file repositories/reference/linux-study-clean/tools/perf/tests/shell/test_java_symbol.sh

File Facts

System
Linux kernel
Corpus path
tools/perf/tests/shell/test_java_symbol.sh
Extension
.sh
Size
2127 bytes
Lines
80
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

int fib(int x) {
	return x > 1 ? fib(x - 2) + fib(x - 1) : 1;
}

int q = 0;

for (int i = 0; i < 10; i++)
	q += fib(i);

System.out.println(q);
EOF

if [ $? -ne 0 ]; then
	echo "Fail to record for java program"
	exit 1
fi

if ! DEBUGINFOD_URLS='' perf inject -i $PERF_DATA -o $PERF_INJ_DATA -j; then
	echo "Fail to inject samples"
	exit 1
fi

# Below is an example of the instruction samples reporting:
#   8.18%  jshell           jitted-50116-29.so    [.] Interpreter
#   0.75%  Thread-1         jitted-83602-1670.so  [.] jdk.internal.jimage.BasicImageReader.getString(int)
perf report --stdio -i ${PERF_INJ_DATA} 2>&1 | \
	grep -E " +[0-9]+\.[0-9]+% .* (Interpreter|jdk\.internal).*" > /dev/null 2>&1

if [ $? -ne 0 ]; then
	echo "Fail to find java symbols"
	exit 1
fi

exit 0

Annotation

Implementation Notes