From 7add577ea68819fb7f64e16187d2543c1cf5518b Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Tue, 23 Feb 2016 21:54:42 -0500
Subject: libeshprof: New profiling library

---
(limited to 'libeshprof')

diff --git a/libeshprof/hooks.esh b/libeshprof/hooks.esh
new file mode 100644
index 0000000..a17ec77
--- /dev/null
+++ b/libeshprof/hooks.esh
@@ -0,0 +1,41 @@
+# Eggshell profiling library
+#
+# Copyright (C) 2016  Patrick "P. J." McDermott
+#
+# This file is part of the Eggshell Linker.
+#
+# The Eggshell Linker is free software: you can redistribute it
+# and/or modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation, either version 3 of
+# the License, or (at your option) any later version.
+#
+# The Eggshell Linker is distributed in the hope that it will be
+# useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with the Eggshell Linker  If not, see
+# <http://www.gnu.org/licenses/>.
+
+__prof_stack_sz=0
+
+__prof_fn_begin()
+{
+	if [ ${__prof_stack_sz} -eq 0 ]; then
+		exec 9>eshmon.out
+	fi
+	printf '%s %s %s\n' "$(date '+%s.%N')" 'B' "${1}" >&9
+	__prof_stack_sz=$((${__prof_stack_sz} + 1))
+}
+__fn_begin_hook __prof_fn_begin
+
+__prof_fn_end()
+{
+	printf '%s %s %s\n' "$(date '+%s.%N')" 'E' "${1}" >&9
+	__prof_stack_sz=$((${__prof_stack_sz} - 1))
+	if [ ${__prof_stack_sz} -eq 0 ]; then
+		exec 9>&-
+	fi
+}
+__fn_end_hook __prof_fn_end
--
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