mingw-spice-vdagent/SOURCES/0016-file_xfer-Use-shared_ptr-to-simplify-memory-manageme.patch

From 7b0c48b15bfe3c02c4158c7cb213403739d078b5 Mon Sep 17 00:00:00 2001
From: Frediano Ziglio <fziglio@redhat.com>
Date: Fri, 25 May 2018 23:03:18 +0100
Subject: [PATCH 16/43] file_xfer: Use shared_ptr to simplify memory management

Clear automatically tasks items.

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Christophe Fergeau <cfergeau@redhat.com>
---
 vdagent/file_xfer.cpp | 25 ++++---------------------
 vdagent/file_xfer.h   |  3 ++-
 2 files changed, 6 insertions(+), 22 deletions(-)

diff --git a/vdagent/file_xfer.cpp b/vdagent/file_xfer.cpp
index ff4c0b9..ada3b47 100644
--- a/vdagent/file_xfer.cpp
+++ b/vdagent/file_xfer.cpp
@@ -41,19 +41,11 @@
 
 void FileXfer::reset()
 {
-    FileXferTasks::iterator iter;
-    FileXferTask* task;
-
-    for (iter = _tasks.begin(); iter != _tasks.end(); iter++) {
-        task = iter->second;
-        delete task;
-    }
     _tasks.clear();
 }
 
 FileXfer::~FileXfer()
 {
-    reset();
 }
 
 void FileXfer::handle_start(VDAgentFileXferStartMessage* start,
@@ -63,7 +55,6 @@ void FileXfer::handle_start(VDAgentFileXferStartMessage* start,
     TCHAR file_path[MAX_PATH];
     char file_name[MAX_PATH];
     ULARGE_INTEGER free_bytes;
-    FileXferTask* task;
     uint64_t file_size;
     HANDLE handle;
     AsUser as_user;
@@ -146,7 +137,7 @@ void FileXfer::handle_start(VDAgentFileXferStartMessage* start,
         vd_printf("Failed creating %ls. More than 63 copies exist?", file_path);
         return;
     }
-    task = new FileXferTask(handle, file_size, file_path);
+    auto task = std::make_shared<FileXferTask>(handle, file_size, file_path);
     _tasks[start->id] = task;
     status->result = VD_AGENT_FILE_XFER_STATUS_CAN_SEND_DATA;
 }
@@ -155,7 +146,6 @@ bool FileXfer::handle_data(VDAgentFileXferDataMessage* data,
                            VDAgentFileXferStatusMessage* status)
 {
     FileXferTasks::iterator iter;
-    FileXferTask* task = NULL;
     DWORD written;
 
     status->id = data->id;
@@ -163,9 +153,9 @@ bool FileXfer::handle_data(VDAgentFileXferDataMessage* data,
     iter = _tasks.find(data->id);
     if (iter == _tasks.end()) {
         vd_printf("file id %u not found", data->id);
-        goto fin;
+        return true;
     }
-    task = iter->second;
+    auto task = iter->second;
     task->pos += data->size;
     if (task->pos > task->size) {
         vd_printf("file xfer is longer than expected");
@@ -184,11 +174,7 @@ bool FileXfer::handle_data(VDAgentFileXferDataMessage* data,
     status->result = VD_AGENT_FILE_XFER_STATUS_SUCCESS;
 
 fin:
-    if (task) {
-        _tasks.erase(iter);
-        delete task;
-    }
-
+    _tasks.erase(iter);
     return true;
 }
 
@@ -212,7 +198,6 @@ void FileXferTask::success()
 void FileXfer::handle_status(VDAgentFileXferStatusMessage* status)
 {
     FileXferTasks::iterator iter;
-    FileXferTask* task;
 
     vd_printf("id %u result %u", status->id, status->result);
     if (status->result != VD_AGENT_FILE_XFER_STATUS_CANCELLED) {
@@ -224,9 +209,7 @@ void FileXfer::handle_status(VDAgentFileXferStatusMessage* status)
         vd_printf("file id %u not found", status->id);
         return;
     }
-    task = iter->second;
     _tasks.erase(iter);
-    delete task;
 }
 
 bool FileXfer::dispatch(VDAgentMessage* msg, VDAgentFileXferStatusMessage* status)
diff --git a/vdagent/file_xfer.h b/vdagent/file_xfer.h
index 41f677a..b138019 100644
--- a/vdagent/file_xfer.h
+++ b/vdagent/file_xfer.h
@@ -19,6 +19,7 @@
 #define _H_FILE_XFER
 
 #include <map>
+#include <memory>
 #include "vdcommon.h"
 
 struct FileXferTask {
@@ -40,7 +41,7 @@ struct FileXferTask {
     void success();
 };
 
-typedef std::map<uint32_t, FileXferTask*> FileXferTasks;
+typedef std::map<uint32_t, std::shared_ptr<FileXferTask> > FileXferTasks;
 
 class FileXfer {
 public:
-- 
2.17.1