From fa82e4fbf065bb474b0f87023f66edffb8a5b850 Mon Sep 17 00:00:00 2001
From: Joshua Haberman <jhaberman@gmail.com>
Date: Wed, 17 Aug 2011 08:15:57 -0700
Subject: Benchmark JIT vs no JIT without forcing a whole-project recompile.

---
 benchmarks/parsestream.upb.c | 87 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 benchmarks/parsestream.upb.c

(limited to 'benchmarks/parsestream.upb.c')

diff --git a/benchmarks/parsestream.upb.c b/benchmarks/parsestream.upb.c
new file mode 100644
index 0000000..37ccb42
--- /dev/null
+++ b/benchmarks/parsestream.upb.c
@@ -0,0 +1,87 @@
+
+#include "main.c"
+
+#include <stdlib.h>
+#include "upb/bytestream.h"
+#include "upb/def.h"
+#include "upb/pb/decoder.h"
+#include "upb/pb/glue.h"
+
+static char *input_str;
+static size_t input_len;
+static upb_msgdef *def;
+static upb_decoder decoder;
+static upb_stringsrc stringsrc;
+
+static upb_sflow_t startsubmsg(void *_m, upb_value fval) {
+  (void)_m;
+  (void)fval;
+  return UPB_CONTINUE_WITH(NULL);
+}
+
+static upb_flow_t value(void *closure, upb_value fval, upb_value val) {
+  (void)closure;
+  (void)fval;
+  (void)val;
+  return UPB_CONTINUE;
+}
+
+static bool initialize()
+{
+  // Initialize upb state, decode descriptor.
+  upb_status status = UPB_STATUS_INIT;
+  upb_symtab *s = upb_symtab_new();
+  upb_read_descriptorfile(s, MESSAGE_DESCRIPTOR_FILE, &status);
+  if(!upb_ok(&status)) {
+    upb_status_print(&status, stderr);
+    return false;
+  }
+
+  def = upb_dyncast_msgdef(upb_symtab_lookup(s, MESSAGE_NAME));
+  if(!def) {
+    fprintf(stderr, "Error finding symbol '%s'.\n", MESSAGE_NAME);
+    return false;
+  }
+  upb_symtab_unref(s);
+
+  // Read the message data itself.
+  input_str = upb_readfile(MESSAGE_FILE, &input_len);
+  if(input_str == NULL) {
+    fprintf(stderr, "Error reading " MESSAGE_FILE "\n");
+    return false;
+  }
+
+  upb_handlers *handlers = upb_handlers_new();
+  if (!JIT) handlers->should_jit = false;
+  // Cause all messages to be read, but do nothing when they are.
+  upb_handlerset hset = {NULL, NULL, value, startsubmsg, NULL, NULL, NULL};
+  upb_handlers_reghandlerset(handlers, def, &hset);
+  upb_decoder_initforhandlers(&decoder, handlers);
+  upb_handlers_unref(handlers);
+  upb_stringsrc_init(&stringsrc);
+  return true;
+}
+
+static void cleanup()
+{
+  free(input_str);
+  upb_def_unref(UPB_UPCAST(def));
+  upb_decoder_uninit(&decoder);
+  upb_stringsrc_uninit(&stringsrc);
+}
+
+static size_t run(int i)
+{
+  (void)i;
+  upb_status status = UPB_STATUS_INIT;
+  upb_stringsrc_reset(&stringsrc, input_str, input_len);
+  upb_decoder_reset(&decoder, upb_stringsrc_bytesrc(&stringsrc), 0, UINT64_MAX, NULL);
+  upb_decoder_decode(&decoder, &status);
+  if(!upb_ok(&status)) goto err;
+  return input_len;
+
+err:
+  fprintf(stderr, "Decode error: ");
+  upb_status_print(&status, stderr);
+  return 0;
+}
-- 
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