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core: 按环境权衡 rom/RAM 取舍决定内核存储形态 #1305

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Merged
juewuy merged 3 commits into from
Jul 11, 2026
Merged

core: 按环境权衡 rom/RAM 取舍决定内核存储形态 #1305

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edd6936
core: store naked core on compressed rom instead of unpacking to tmpfs
ashi009 Jul 11, 2026
55cfa65
core: prefer raw binary on compressed rom, avoid upx on tmpfs devices
ashi009 Jul 11, 2026
4337740
core: choose core storage by weighing rom cost vs ram cost
ashi009 Jul 11, 2026
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36 changes: 29 additions & 7 deletions scripts/libs/core_tools.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,20 @@

[ -n "$(find --help 2>&1 | grep -o size)" ] && find_para=' -size +2000' #find命令兼容

#根据环境权衡决定是否把裸二进制存于$BINDIR(rom)——省RAM，前提是rom装得下
#$1=裸二进制字节数。仅当$TMPDIR在内存(tmpfs)时裸存才省RAM；
#再按$BINDIR文件系统估算裸二进制落盘体积(透明压缩fs约2:1)，需留有余量($raw_margin,默认8M)
store_raw_worth_it(){
case "$(df -T "$TMPDIR" 2>/dev/null | awk 'END{print $2}')" in tmpfs|ramfs) ;; *) return 1 ;; esac
rom_free=$(df -k "$BINDIR" 2>/dev/null | awk 'END{print $4}') #KB
[ -z "$rom_free" ] && return 1
case "$(df -T "$BINDIR" 2>/dev/null | awk 'END{print $2}')" in
squashfs|ubifs|overlay|overlayfs) est=$(( ${1:-0}/1024/2 )) ;; #透明压缩，约2:1
*) est=$(( ${1:-0}/1024 )) ;; #无压缩，全量
esac
[ $(( rom_free - est )) -gt "${raw_margin:-8192}" ] && return 0 || return 1
}

core_unzip() { #$1:需要解压的文件 $2:目标文件名
if echo "$1" |grep -q 'tar.gz$' ;then
[ "$BINDIR" = "$TMPDIR" ] && rm -rf "$TMPDIR"/CrashCore #小闪存模式防止空间不足
Expand All @@ -14,6 +28,8 @@ core_unzip() { #$1:需要解压的文件 $2:目标文件名
rm -rf "$TMPDIR"/core_tmp
elif echo "$1" |grep -q '.gz$' ;then
gunzip -c "$1" > "$TMPDIR"/"$2"
elif echo "$1" |grep -q '.raw$' ;then
ln -sf "$1" "$TMPDIR"/"$2"
elif echo "$1" |grep -q '.upx$' ;then
ln -sf "$1" "$TMPDIR"/"$2"
else
Expand Down Expand Up @@ -45,16 +61,20 @@ core_check(){
rm -rf "$1" "$TMPDIR"/core_new
return 2
else
rm -f "$BINDIR"/CrashCore.tar.gz "$BINDIR"/CrashCore.gz "$BINDIR"/CrashCore.upx
if [ -z "$zip_type" ];then
rm -f "$BINDIR"/CrashCore.tar.gz "$BINDIR"/CrashCore.gz "$BINDIR"/CrashCore.upx "$BINDIR"/CrashCore.raw
if [ "$zip_type" = 'upx' ];then
mv -f "$1" "$BINDIR/CrashCore.upx"
rm -f "$TMPDIR"/core_new
ln -sf "$BINDIR/CrashCore.upx" "$TMPDIR/CrashCore"
elif store_raw_worth_it "$(wc -c < "$TMPDIR/core_new")" ;then
rm -f "$1"
mv -f "$TMPDIR/core_new" "$BINDIR/CrashCore.raw"
ln -sf "$BINDIR/CrashCore.raw" "$TMPDIR/CrashCore"
elif [ -z "$zip_type" ];then
gzip -c "$TMPDIR/core_new" > "$BINDIR/CrashCore.gz"
mv -f "$TMPDIR/core_new" "$TMPDIR/CrashCore"
else
mv -f "$1" "$BINDIR/CrashCore.$zip_type"
fi
if [ "$zip_type" = 'upx' ];then
rm -f "$1" "$TMPDIR"/core_new
ln -sf "$TMPDIR/CrashCore.upx" "$TMPDIR/CrashCore"
else
mv -f "$TMPDIR/core_new" "$TMPDIR/CrashCore"
fi
core_v="$v"
Expand All @@ -70,6 +90,8 @@ core_webget(){
. "$CRASHDIR"/libs/check_target.sh
if [ -z "$custcorelink" ];then
[ -z "$zip_type" ] && zip_type='tar.gz'
#若环境适合裸存(见store_raw_worth_it，按典型核心~45M估算)，避免下载upx，改取tar.gz的裸二进制
[ "$zip_type" = 'upx' ] && store_raw_worth_it 47185920 && zip_type='tar.gz'
get_bin "$TMPDIR/Coretmp.$zip_type" "bin/$crashcore/${target}-linux-${cpucore}.$zip_type"
else
case "$custcorelink" in
Expand Down