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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. |
| 4 |
| 5 #ifndef BIN_VMSTATS_H_ |
| 6 #define BIN_VMSTATS_H_ |
| 7 |
| 8 #include "include/dart_api.h" |
| 9 |
| 10 /** |
| 11 * A VM status callback. Status plug-ins implement and register this |
| 12 * function using Dart_RegisterStatusPlugin. When Dart_GetVMStatus is |
| 13 * called, each callback is invoked to provide the requested information, |
| 14 * and the first one to do so "wins". |
| 15 * |
| 16 * Note: status requests execute outside of an isolate (which is why |
| 17 * handles aren't used). |
| 18 * |
| 19 * \param request an optional string that defines REST-like parameters |
| 20 * to define what information is requested. |
| 21 * |
| 22 * \return Returns a valid JSON string, allocated from C heap. The caller |
| 23 * is responsible for releasing this string. NULL is returned if the |
| 24 * callback didn't handle that request. |
| 25 */ |
| 26 typedef char* (*Dart_VmStatusCallback)(const char* request); |
| 27 |
| 28 |
| 29 /** |
| 30 * Register a VM status plug-in. The specified status type must not already |
| 31 * have a registered plug-in. |
| 32 * |
| 33 * \return 0 if the plug-in was registered, or -1 if there is an error. |
| 34 */ |
| 35 DART_EXPORT int Dart_RegisterVmStatusPlugin(Dart_VmStatusCallback callback); |
| 36 |
| 37 #endif // BIN_VMSTATS_H_ |
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