refactor(runtime): lazily activate host modules (#6331)

scripts/perf/instrument/collect_proc.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+# 读取采样开始时已经存在的容器进程，避免把采样器自身计入结果。
+
+set -uo pipefail
+
+self_pid="$$"
+process_dirs=(/proc/[0-9]*)
+
+printf 'pid\tppid\tthreads\trss_kib\tpss_kib\tuss_kib\tcomm\texe\tcmdline\n'
+
+for process_dir in "${process_dirs[@]}"; do
+    pid="${process_dir##*/}"
+    if [[ "${pid}" == "${self_pid}" ]] || [[ ! -r "${process_dir}/status" ]]; then
+        continue
+    fi
+
+    status_values="$(awk '
+        /^PPid:/ { ppid=$2 }
+        /^Threads:/ { threads=$2 }
+        END { printf "%d %d", ppid + 0, threads + 0 }
+    ' "${process_dir}/status" 2>/dev/null || true)"
+    read -r ppid threads <<< "${status_values:-0 0}"
+
+    rss_kib=0
+    pss_kib=0
+    uss_kib=0
+    if [[ -r "${process_dir}/smaps_rollup" ]]; then
+        memory_values="$(awk '
+            /^Rss:/ { rss=$2 }
+            /^Pss:/ { pss=$2 }
+            /^Private_Clean:/ { uss += $2 }
+            /^Private_Dirty:/ { uss += $2 }
+            /^Private_Hugetlb:/ { uss += $2 }
+            END { printf "%d %d %d", rss + 0, pss + 0, uss + 0 }
+        ' "${process_dir}/smaps_rollup" 2>/dev/null || true)"
+        read -r rss_kib pss_kib uss_kib <<< "${memory_values:-0 0 0}"
+    fi
+
+    comm=""
+    if [[ -r "${process_dir}/comm" ]]; then
+        IFS= read -r comm < "${process_dir}/comm" || true
+    fi
+    executable="$(readlink "${process_dir}/exe" 2>/dev/null || true)"
+    command_line="$(tr '\000\t' '  ' < "${process_dir}/cmdline" 2>/dev/null || true)"
+    comm="${comm//$'\t'/ }"
+    executable="${executable//$'\t'/ }"
+    command_line="${command_line//$'\t'/ }"
+
+    printf '%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n' \
+        "${pid}" "${ppid:-0}" "${threads:-0}" \
+        "${rss_kib:-0}" "${pss_kib:-0}" "${uss_kib:-0}" \
+        "${comm}" "${executable}" "${command_line}"
+done