Unify specification of file open, close, and write callbacks.

runtime/bin/main.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 <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
@@ skipping 23 matching lines @@
 
 // Global state that indicates whether pprof symbol information is
 // to be generated or not.
 static const char* generate_pprof_symbols_filename = NULL;
 
 
 // Global state that stores a pointer to the application script snapshot.
 static bool use_script_snapshot = false;
 static File* snapshot_file = NULL;
 
+
 // Global state that indicates whether there is a debug breakpoint.
 // This pointer points into an argv buffer and does not need to be
 // free'd.
 static const char* breakpoint_at = NULL;
 
 
 // Global state that indicates whether we should open a connection
 // and listen for a debugger to connect.
 static bool start_debugger = false;
 static const int DEFAULT_DEBUG_PORT = 5858;
@@ skipping 166 matching lines @@
     if (strncmp(option, name, length) == 0) {
       return main_options[i].process(option + length);
     }
     i += 1;
     name = main_options[i].option_name;
   }
   return false;
 }
 
 
-static void WriteToPerfEventsFile(const char* buffer, int64_t num_bytes) {
-  ASSERT(perf_events_symbols_file != NULL);
-  perf_events_symbols_file->WriteFully(buffer, num_bytes);
+static void* OpenFile(const char* name) {
+  File* file = File::Open(name, File::kWriteTruncate);
+  ASSERT(file != NULL);
+  return reinterpret_cast<void*>(file);
 }
 
+
+static void WriteFile(const void* buffer, intptr_t num_bytes, void* stream) {
+  ASSERT(stream != NULL);
+  File* file_stream = reinterpret_cast<File*>(stream);
+  bool bytes_written = file_stream->WriteFully(buffer, num_bytes);
+  ASSERT(bytes_written);
+}
+
+
+static void CloseFile(void* stream) {
+  delete reinterpret_cast<File*>(stream);
+}
+
+
 // Convert all the arguments to UTF8. On Windows, the arguments are
 // encoded in the current code page and not UTF8.
 //
 // Returns true if the arguments are converted. In that case
 // each of the arguments need to be deallocated using free.
 static bool Utf8ConvertArgv(int argc, char** argv) {
   bool result = false;
   for (int i = 0; i < argc; i++) {
     char* arg = argv[i];
     argv[i] = StringUtils::SystemStringToUtf8(arg);
@@ skipping 39 matching lines @@
       if ((strncmp(argv[i], kPrintFlags1, strlen(kPrintFlags1)) == 0) ||
           (strncmp(argv[i], kPrintFlags2, strlen(kPrintFlags2)) == 0)) {
         *print_flags_seen = true;
       }
       vm_options->AddArgument(argv[i]);
       i++;
     }
   }
 
   if (perf_events_symbols_file != NULL) {
-    Dart_InitPerfEventsSupport(&WriteToPerfEventsFile);
+    Dart_InitPerfEventsSupport(perf_events_symbols_file);
   }
 
   if (generate_pprof_symbols_filename != NULL) {
     Dart_InitPprofSupport();
   }
 
   // Get the script name.
   if (i < argc) {
     *script_name = argv[i];
     i++;
@@ skipping 378 matching lines @@
       return 0;
     } else {
       PrintUsage();
       return kErrorExitCode;
     }
   }
 
   Dart_SetVMFlags(vm_options.count(), vm_options.arguments());
 
   // Initialize the Dart VM.
-  if (!Dart_Initialize(CreateIsolateAndSetup,
-                       NULL,
-                       NULL,
-                       ShutdownIsolate)) {
+  if (!Dart_Initialize(CreateIsolateAndSetup, NULL, NULL, ShutdownIsolate,
+                       OpenFile, WriteFile, CloseFile)) {
     fprintf(stderr, "%s", "VM initialization failed\n");
     fflush(stderr);
     return kErrorExitCode;
   }
 
   DartUtils::SetOriginalWorkingDirectory();
 
   // Start the debugger wire protocol handler if necessary.
   if (start_debugger) {
     ASSERT(debug_port != 0);
@@ skipping 68 matching lines @@
   Dart_ShutdownIsolate();
   // Terminate process exit-code handler.
   Process::TerminateExitCodeHandler();
   // Free copied argument strings if converted.
   if (argv_converted) {
     for (int i = 0; i < argc; i++) free(argv[i]);
   }
 
   return 0;
 }