From c30f1137121315b0d3641af6dc61e3b047f940e1 Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Tue, 7 Dec 2010 13:56:11 -0800
Subject: Upgrade V8 to 3.0.0

---
 deps/v8/samples/shell.cc | 54 +++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 49 insertions(+), 5 deletions(-)

(limited to 'deps/v8/samples')

diff --git a/deps/v8/samples/shell.cc b/deps/v8/samples/shell.cc
index 1a13f5f80b..460457552c 100644
--- a/deps/v8/samples/shell.cc
+++ b/deps/v8/samples/shell.cc
@@ -26,6 +26,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <v8.h>
+#include <v8-testing.h>
 #include <fcntl.h>
 #include <string.h>
 #include <stdio.h>
@@ -44,10 +45,10 @@ v8::Handle<v8::Value> Quit(const v8::Arguments& args);
 v8::Handle<v8::Value> Version(const v8::Arguments& args);
 v8::Handle<v8::String> ReadFile(const char* name);
 void ReportException(v8::TryCatch* handler);
+void SetFlagsFromString(const char* flags);
 
 
 int RunMain(int argc, char* argv[]) {
-  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
   v8::HandleScope handle_scope;
   // Create a template for the global object.
   v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
@@ -63,11 +64,11 @@ int RunMain(int argc, char* argv[]) {
   global->Set(v8::String::New("version"), v8::FunctionTemplate::New(Version));
   // Create a new execution environment containing the built-in
   // functions
-  v8::Handle<v8::Context> context = v8::Context::New(NULL, global);
-  // Enter the newly created execution environment.
-  v8::Context::Scope context_scope(context);
+  v8::Persistent<v8::Context> context = v8::Context::New(NULL, global);
   bool run_shell = (argc == 1);
   for (int i = 1; i < argc; i++) {
+    // Enter the execution environment before evaluating any code.
+    v8::Context::Scope context_scope(context);
     const char* str = argv[i];
     if (strcmp(str, "--shell") == 0) {
       run_shell = true;
@@ -99,12 +100,48 @@ int RunMain(int argc, char* argv[]) {
     }
   }
   if (run_shell) RunShell(context);
+  context.Dispose();
   return 0;
 }
 
 
 int main(int argc, char* argv[]) {
-  int result = RunMain(argc, argv);
+  // Figure out if we're requested to stress the optimization
+  // infrastructure by running tests multiple times and forcing
+  // optimization in the last run.
+  bool FLAG_stress_opt = false;
+  bool FLAG_stress_deopt = false;
+  for (int i = 0; i < argc; i++) {
+    if (strcmp(argv[i], "--stress-opt") == 0) {
+      FLAG_stress_opt = true;
+      argv[i] = NULL;
+    } else if (strcmp(argv[i], "--stress-deopt") == 0) {
+      FLAG_stress_deopt = true;
+      argv[i] = NULL;
+    } else if (strcmp(argv[i], "--noalways-opt") == 0) {
+      // No support for stressing if we can't use --always-opt.
+      FLAG_stress_opt = false;
+      FLAG_stress_deopt = false;
+      break;
+    }
+  }
+
+  v8::V8::SetFlagsFromCommandLine(&argc, argv, true);
+  int result = 0;
+  if (FLAG_stress_opt || FLAG_stress_deopt) {
+    v8::Testing::SetStressRunType(FLAG_stress_opt
+                                  ? v8::Testing::kStressTypeOpt
+                                  : v8::Testing::kStressTypeDeopt);
+    int stress_runs = v8::Testing::GetStressRuns();
+    for (int i = 0; i < stress_runs && result == 0; i++) {
+      printf("============ Stress %d/%d ============\n",
+             i + 1, stress_runs);
+      v8::Testing::PrepareStressRun(i);
+      result = RunMain(argc, argv);
+    }
+  } else {
+    result = RunMain(argc, argv);
+  }
   v8::V8::Dispose();
   return result;
 }
@@ -221,6 +258,8 @@ v8::Handle<v8::String> ReadFile(const char* name) {
 void RunShell(v8::Handle<v8::Context> context) {
   printf("V8 version %s\n", v8::V8::GetVersion());
   static const int kBufferSize = 256;
+  // Enter the execution environment before evaluating any code.
+  v8::Context::Scope context_scope(context);
   while (true) {
     char buffer[kBufferSize];
     printf("> ");
@@ -306,3 +345,8 @@ void ReportException(v8::TryCatch* try_catch) {
     }
   }
 }
+
+
+void SetFlagsFromString(const char* flags) {
+  v8::V8::SetFlagsFromString(flags, strlen(flags));
+}
-- 
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