Add Timeline to dart:developer

runtime/vm/zone.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/zone.h"
 
 #include "platform/assert.h"
 #include "platform/utils.h"
 #include "vm/flags.h"
 #include "vm/handles_impl.h"
@@ skipping 160 matching lines @@
 
 
 char* Zone::MakeCopyOfString(const char* str) {
   intptr_t len = strlen(str) + 1;  // '\0'-terminated.
   char* copy = Alloc<char>(len);
   strncpy(copy, str, len);
   return copy;
 }
 
 
+char* Zone::ConcatStrings(const char* a, const char* b, char join) {
+  intptr_t a_len = (a == NULL) ? 0 : strlen(a);
+  const intptr_t b_len = strlen(b) + 1;  // '\0'-terminated.
+  const intptr_t len = a_len + b_len;
+  char* copy = Alloc<char>(len);
+  if (a_len > 0) {
+    strncpy(copy, a, a_len);
+    // Insert join character.
+    copy[a_len++] = join;
+  }
+  strncpy(&copy[a_len], b, b_len);
+  return copy;
+}
+
+
 #if defined(DEBUG)
 void Zone::DumpZoneSizes() {
   intptr_t size = 0;
   for (Segment* s = large_segments_; s != NULL; s = s->next()) {
     size += s->size();
   }
   OS::PrintErr("***   Zone(0x%" Px ") size in bytes,"
                " Total = %" Pd " Large Segments = %" Pd "\n",
                reinterpret_cast<intptr_t>(this), SizeInBytes(), size);
 }
@@ skipping 17 matching lines @@
   return buffer;
 }
 
 
 char* Zone::VPrint(const char* format, va_list args) {
   return OS::VSCreate(this, format, args);
 }
 
 
 }  // namespace dart