task-profiling.sh

#!/bin/bash

# Function to read memory usage from smaps
read_memory_usage() {
    local tid=$1
    local smaps_file="/proc/$pid/task/$tid/smaps"

    if [[ -f "$smaps_file" ]]; then
        cat "$smaps_file" >> $SMAP_OUTPUT_FILE
    fi
}

pid=$1
SMAP_OUTPUT_FILE="/tmp/task_smaps_dump_$pid.txt"

if [[ -z "$pid" ]]; then
    echo "Usage: $0 <pid>"
    exit 1
fi

if [[ ! -d "/proc/$pid/task" ]]; then
    echo "Invalid PID or process does not exist."
    exit 1
fi

echo "Memory usage for each thread in process $pid"

echo "Timestamp: $(date)" >> $SMAP_OUTPUT_FILE
for tid in /proc/$pid/task/*; do
    tid=$(basename "$tid")
    echo "Task ID: $tid" >> $SMAP_OUTPUT_FILE
    read_memory_usage "$tid"
    echo "========================================" >> $SMAP_OUTPUT_FILE
done