From 010152de4f19fcb4f1b627123aa27f08deb13e72 Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sat, 2 Nov 2024 16:19:11 +0200
Subject: add spawn benchmark

---
 benchmarks/spawn/init.c    | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 benchmarks/spawn/source.mk |  1 +
 benchmarks/spawn/spawn.c   | 14 ++++++++++++++
 3 files changed, 61 insertions(+)
 create mode 100644 benchmarks/spawn/init.c
 create mode 100644 benchmarks/spawn/source.mk
 create mode 100644 benchmarks/spawn/spawn.c

(limited to 'benchmarks/spawn')

diff --git a/benchmarks/spawn/init.c b/benchmarks/spawn/init.c
new file mode 100644
index 0000000..d4c2504
--- /dev/null
+++ b/benchmarks/spawn/init.c
@@ -0,0 +1,46 @@
+#include <common/benchmark.h>
+#include <common/cpio.h>
+
+void callback()
+{
+	sys_exit(1);
+}
+
+START(pid, tid, d0, d1, d2, d3)
+{
+	UNUSED(pid);
+	UNUSED(tid);
+	UNUSED(d0);
+	UNUSED(d1);
+	UNUSED(d2);
+	UNUSED(d3);
+
+	if (d0 == SYS_USER_ORPHANED) {
+		sys_exit(1);
+	}
+
+	printf("finding spawn in cpio archive %lx...\n", d2);
+	struct cpio_header *cp = cpio_find_file((const void *)d2,
+			"spawn", sizeof("spawn") - 1);
+
+	if (!cp) {
+		printf("couldn't find spawn?\n");
+		report(0, 0, 0);
+	}
+
+	long name_len = convnum(cp->c_namesize, 8, 16);
+	uintptr_t spawn = (uintptr_t)(cp) + align_up(sizeof(struct cpio_header) + name_len, 4);
+	printf("found spawn at %lx\n", spawn);
+
+	uint64_t timebase = sys_timebase();
+	uint64_t start = sys_ticks();
+
+	for (size_t i = 0; i < 1000; ++i) {
+		id_t new_id = sys_spawn(spawn, 0);
+		sys_detach(new_id);
+		sys_swap(new_id);
+	}
+
+	uint64_t end = sys_ticks();
+	report(start, end, timebase);
+}
diff --git a/benchmarks/spawn/source.mk b/benchmarks/spawn/source.mk
new file mode 100644
index 0000000..20ce8d4
--- /dev/null
+++ b/benchmarks/spawn/source.mk
@@ -0,0 +1 @@
+DO != ./scripts/gen-benchmark -n spawn -p init -p spawn
diff --git a/benchmarks/spawn/spawn.c b/benchmarks/spawn/spawn.c
new file mode 100644
index 0000000..c6a2f8e
--- /dev/null
+++ b/benchmarks/spawn/spawn.c
@@ -0,0 +1,14 @@
+#include <common/benchmark.h>
+
+START(pid, tid, d0, d1, d2, d3)
+{
+	UNUSED(pid);
+	UNUSED(tid);
+	UNUSED(d0);
+	UNUSED(d1);
+	UNUSED(d2);
+	UNUSED(d3);
+
+	printf("not sure how we got here?\n");
+	/* die or something */
+}
-- 
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