Use echo instead of cat in loops in size_classes.sh
This avoids fork/exec()ing in loops, as echo is a builtin, and makes
size_classes.sh much faster (from > 10s to < 0.2s on mingw on my machine).
diff --git a/include/jemalloc/internal/size_classes.sh b/include/jemalloc/internal/size_classes.sh
index 3d23613..29c80c1 100755
--- a/include/jemalloc/internal/size_classes.sh
+++ b/include/jemalloc/internal/size_classes.sh
@@ -35,10 +35,8 @@
while [ ${lg_t} -le ${lg_q} ] ; do
lg_p=${lg_pmin}
while [ ${lg_p} -le ${lg_pmax} ] ; do
- cat <<EOF
-#if (LG_TINY_MIN == ${lg_t} && LG_QUANTUM == ${lg_q} && LG_PAGE == ${lg_p})
-#define SIZE_CLASSES_DEFINED
-EOF
+ echo "#if (LG_TINY_MIN == ${lg_t} && LG_QUANTUM == ${lg_q} && LG_PAGE == ${lg_p})"
+ echo "#define SIZE_CLASSES_DEFINED"
pow2 ${lg_q}; q=${pow2_result}
pow2 ${lg_t}; t=${pow2_result}
pow2 ${lg_p}; p=${pow2_result}
@@ -46,16 +44,12 @@
psz=0
sz=${t}
delta=$((${sz} - ${psz}))
-cat <<EOF
-/* SIZE_CLASS(bin, delta, sz) */
-#define SIZE_CLASSES \\
-EOF
+ echo "/* SIZE_CLASS(bin, delta, sz) */"
+ echo "#define SIZE_CLASSES \\"
# Tiny size classes.
while [ ${sz} -lt ${q} ] ; do
- cat <<EOF
- SIZE_CLASS(${bin}, ${delta}, ${sz}) \\
-EOF
+ echo " SIZE_CLASS(${bin}, ${delta}, ${sz}) \\"
bin=$((${bin} + 1))
psz=${sz}
sz=$((${sz} + ${sz}))
@@ -73,22 +67,18 @@
fi
next_2pow=$((${sz} * 2))
while [ ${sz} -lt $next_2pow ] ; do
- cat <<EOF
- SIZE_CLASS(${bin}, ${delta}, ${sz}) \\
-EOF
+ echo " SIZE_CLASS(${bin}, ${delta}, ${sz}) \\"
bin=$((${bin} + 1))
psz=${sz}
sz=$((${sz} + ${i}))
delta=$((${sz} - ${psz}))
done
done
- cat <<EOF
-
-#define NBINS ${bin}
-#define SMALL_MAXCLASS ${psz}
-#endif
-
-EOF
+ echo
+ echo "#define NBINS ${bin}"
+ echo "#define SMALL_MAXCLASS ${psz}"
+ echo "#endif"
+ echo
lg_p=$((${lg_p} + 1))
done
lg_t=$((${lg_t} + 1))