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feat: fixed leak #3298

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feat: fixed leak #3298

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3049b4d
feat: fixed leak
vcharmcaster Sep 18, 2023
7e16cee
scanner fixed
vcharmcaster Sep 18, 2023
d05168f
scanner fixed
vcharmcaster Sep 18, 2023
b56b69a
formatting fix
vcharmcaster Sep 19, 2023
6fa35c2
format fix
vcharmcaster Sep 19, 2023
b37e600
updated review comments
vcharmcaster Sep 20, 2023
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98 changes: 49 additions & 49 deletions ...monitor/gc-monitor-tests/src/test/java/com/microsoft/gcmonitortests/GcEventGenerator.java
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Original file line number Diff line number Diff line change
Expand Up @@ -28,66 +28,66 @@ public static void main(String[] args) throws InterruptedException {
@SuppressWarnings("SystemOut")
private void run() throws InterruptedException {
System.out.println("Hit return to start");

// Block until consumer sends the ready signal
Scanner scanner = new Scanner(System.in, UTF_8.name());
System.out.println(scanner.nextLine());

// Allocate 1mb
for (int i = 0; i < 1024; i++) {
memory.add(new MemoryConsumer(CHUNK_SIZE));
}
try (Scanner scanner = new Scanner(System.in, UTF_8.name())) {
System.out.println(scanner.nextLine());

// Create 100mb of transient memory, invoking a number of YG gc's and promoting some to OG
for (int i = 0; i < 100 * 1024; i++) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
}

// Run full GC
System.gc();

// Allocate 30mb, 25% of which is transient
for (int i = 0; i < 30 * 1024; i++) {
if ((i % 4) == 0) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
} else {
// Allocate 1mb
for (int i = 0; i < 1024; i++) {
memory.add(new MemoryConsumer(CHUNK_SIZE));
}
} // Heap at 23.5mb

// Create 100mb of transient memory, invoking a number of YG gc's and promoting 40mb to OG
for (int i = 0; i < 100 * 1024; i++) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
}

// free up 10mb
for (int i = 0; i < 10 * 1024; i++) {
memory.remove(0);
} // Heap at 13.5mb

// Allocate 43mb, 50% of which is transient
for (int i = 0; i < 43 * 1024; i++) {
if ((i % 2) == 0) {
// Create 100mb of transient memory, invoking a number of YG gc's and promoting some to OG
for (int i = 0; i < 100 * 1024; i++) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
} else {
memory.add(new MemoryConsumer(CHUNK_SIZE));
}
} // Heap at 35mb

// free up everything
memory.clear();
// Run full GC
System.gc();

// Run full GC
System.gc();
// free up everything
memory.clear();
// Run full GC
System.gc();
// Allocate 30mb, 25% of which is transient
for (int i = 0; i < 30 * 1024; i++) {
if ((i % 4) == 0) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
} else {
memory.add(new MemoryConsumer(CHUNK_SIZE));
}
} // Heap at 23.5mb

// Seems if the JVM exits too quickly MX beans do not report, give it some time
// Create 100mb of transient memory, invoking a number of YG gc's and promoting 40mb to OG
for (int i = 0; i < 100 * 1024; i++) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
}

System.out.println("Hit return to exit");
System.out.println(scanner.nextLine());
// free up 10mb
for (int i = 0; i < 10 * 1024; i++) {
memory.remove(0);
} // Heap at 13.5mb

// Allocate 43mb, 50% of which is transient
for (int i = 0; i < 43 * 1024; i++) {
if ((i % 2) == 0) {
singleMemory = new MemoryConsumer(CHUNK_SIZE);
} else {
memory.add(new MemoryConsumer(CHUNK_SIZE));
}
} // Heap at 35mb

// free up everything
memory.clear();

// Run full GC
System.gc();
// free up everything
memory.clear();
// Run full GC
System.gc();

// Seems if the JVM exits too quickly MX beans do not report, give it some time

System.out.println("Hit return to exit");
System.out.println(scanner.nextLine());
}
}

static class MemoryConsumer {
Expand Down