Add dumb script to run the google profiler against a binary

diff --git a/scripts/build/gprof-profile.sh b/scripts/build/gprof-profile.sh
new file mode 100755 (executable)
index 0000000..4fc2e06
--- /dev/null
+++ b/scripts/build/gprof-profile.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+
+set -e
+
+need_something=false
+
+function ERROR
+{
+       echo "$@" 1>&2;
+}
+
+function INFO
+{
+       echo "$@"
+}
+
+bin=$1
+shift
+
+if ! which llvm-symbolizer > /dev/null; then
+       ERROR "llvm-symbolizer must be in the current PATH ($PATH)"
+       need_something=true
+fi
+
+if ! which pprof > /dev/null; then
+       ERROR "pprof must be in the current PATH ($PATH).  If not installed \`brew install gperftools\`"
+       need_something=true
+fi
+
+if ! which dot > /dev/null; then
+       ERROR "dot must be in the current PATH ($PATH).  If not installed \`brew install gprof2dot\`"
+       need_something=true
+fi
+
+if ! which ps2pdf > /dev/null; then
+       ERROR "ps2pdf must be in the current PATH ($PATH).  If not installed \`brew install ghostscript\`"
+       need_something=true
+fi
+
+if ! test -e "$bin"; then
+       ERROR "Binary to profile \"$bin\" does not exist"
+       need_something=true
+fi
+
+if ! $need_something && ! otool -L "$bin" | grep 'libprofiler' > /dev/null; then
+       ERROR "$1 must be linked against libprofiler"
+       ERROR "Either '-lprofiler' or \`brew install gperftools\` and rerun configure"
+       need_something=true
+fi
+
+if $need_something; then
+       exit 1
+fi
+
+: ${PROFILE_OUT:=$(mktemp /tmp/profile.XXXX)}
+: ${PROFILE_PDF_OUT:=${PROFILE_OUT}.pdf}
+
+# Call the binary
+CPUPROFILE="$PROFILE_OUT" $bin $@
+
+INFO "Profile written to \"$PROFILE_OUT\", override with PROFILE_OUT"
+
+pprof --pdf "$bin" "$PROFILE_OUT" > "$PROFILE_PDF_OUT"
+
+INFO "Profile analysis written to \"$PROFILE_PDF_OUT\", override with PROFILE_PDF_OUT"
+
+if which open > /dev/null; then
+       open "$PROFILE_PDF_OUT"
+fi