我在Windows中尝试GTK应用程序，现在才开始学习GTK。
GTK版本：
gtk+-bundle_2.24.10-20120208_win32
申请要求：
1. Multi threaded
2. Queue based communication
3. GTK window to update a image data in screen with 5 secs delay
应用程序功能：
1. 2 thread (producer and other consumer)
Producer will post a string to queue manager which will form a structure and post the data to the respective queue
2. Upon posting the data to the queue manager producer thread shall update the respective image on the screen
3. Consumer will be monitoring the queue and on receiving data consumer will process the data according
The application is running as expected:
我面临的问题是内存（根据Windows资源监视器）
Confused which one is causing the LEAK -- GTK or my queue or ???
the program starts with 26K memory and on certain time it reaches 190000K memory. So i see memory leak
request some guidance in handling this issue
这是我正在使用的示例程序流程。
#include <stdio.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <windows.h>
#define sleep(n) g_usleep(1000 * n)
G_LOCK_DEFINE_STATIC (queue_memchunk);
static GMemChunk *queue_memchunk = NULL;
static GTrashStack *free_queue_nodes = NULL;
GQueue* msgQueueId[7];
#define NORMAL_TEXT 0
#define WARNING_TEXT 1
#define STATUS_TEXT 2
#define NORMAL_FONT 0
#define SMALL_FONT 1
#define NORM_FONT_UNLTD 2
#define MAX_MSG_SIZE 5120
#define TRACK_ONE_SIZE 150
#define TRACK_TWO_SIZE 100
#define TRACK_THREE_SIZE 100
#define FSM_CHANNEL 1
typedef struct
{
int msgType;
int msgSize;
char msgBuf[MAX_MSG_SIZE];
}STRUCT_MSG;
GtkWidget* window;
struct WidgetsAlive
{
GtkWidget* widPtr;
int widIndex;
struct WidgetsAlive* dependants;
struct WidgetsAlive* next;
};
/* Linked list ptr to the widgets alive */
static struct WidgetsAlive* wAlive = NULL;
static struct WidgetsAlive* depFirstNode = NULL;
typedef struct {
char* fileName;
}dispTextPage_struct;
typedef struct {
char* data;
int row;
int column;
char textType;
char fontType;
}updateTextPage_struct;
int waitForLoop;
void dispInit(int argc, char* argv[]);
void dispInfoPage(char* fileName, int duration);
gboolean dispTextPage_callBack(dispTextPage_struct *params);
int dispTextPage(char* fileName, int duration);
int destroyNotify(void){
printf("Notfiy called in");
while (gtk_events_pending())
{
g_usleep (1);
gtk_main_iteration_do(FALSE);
}
waitForLoop = 0;
return 0;
}
gpointer main_callback(gpointer data)
{
gtk_main();
return 0;
}
void dispInit(int argc, char* argv[])
{
printf("Initializing the display library\n");
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_resize(GTK_WINDOW(window), 640, 480);
gtk_window_set_default_size(GTK_WINDOW(window), 640, 480);
gtk_widget_realize( window );
gtk_window_set_decorated(GTK_WINDOW(window), FALSE);
g_thread_create(main_callback, NULL, FALSE, NULL);
}
void dispInfoPage(char* fileName, int duration)
{
int index;
gdk_threads_enter();
destroyWidget(0);
GtkWidget *image;
image = gtk_image_new_from_file(fileName);
gtk_container_add(GTK_CONTAINER(window), image);
gtk_widget_show(image);
gtk_widget_show(window);
gdk_threads_leave();
}
struct WidgetsAlive* getWidgetFromList(int widgetIndex)
{
struct WidgetsAlive *temp, *prev;
temp = wAlive;
prev = NULL;
if (temp == NULL)
{
/* Widget list is empty. Nothing to destroy */
return NULL;
}
else
{
while(temp != NULL)
{
if(temp->widIndex == widgetIndex)
{
return temp;
}
else
{
//printf("Iterating to the next widget in the list, since the index is different\n");
prev = temp;
temp = temp->next;
}
}
//printf("No widget with index %d found to destroy, Please check the index..\n", index);
}
return NULL;
}
int destroyWidget(int index)
{
GList *children, *iter;
struct WidgetsAlive *temp, *prev, *next, *depTemp;
temp = wAlive;
prev = wAlive;
gtk_window_resize((GtkWindow*)window, 800, 600);
children = gtk_container_get_children(GTK_CONTAINER(window));
for(iter = children; iter != NULL; iter = g_list_next(iter)){
gtk_container_remove(GTK_CONTAINER(window),GTK_WIDGET(iter->data));
//printf("Deleting Widget\n");
}
g_list_free(iter);
g_list_free(children);
gtk_window_resize((GtkWindow*)window, 800, 600);
/* if (temp == NULL)
{
return;
}
else
{
if (temp->widIndex == index)
{
if (temp->widPtr != NULL)
{
if (GTK_IS_WIDGET(temp->widPtr))
{
//gtk_widget_destroy((GtkWidget*)temp->widPtr);
printf("Destroying widget Done\n");
}
}
depTemp = depFirstNode;
next = depFirstNode;
while (depTemp != NULL)
{
depTemp = depTemp->next;
free(next);
next = NULL;
next = depTemp;
}
depFirstNode = NULL;
wAlive = NULL;
free(temp);
temp = NULL;
return;
}
else
{
while(temp != NULL)
{
if(temp->widIndex == index)
{
printf("Found widget match\n");
if (temp->widPtr != NULL)
{
if (GTK_IS_WIDGET(temp->widPtr))
{
//gtk_widget_destroy((GtkWidget*)temp->widPtr);
}
}
prev->next = temp->next;
free(temp);
temp = NULL;
return;
}
else
{
prev = temp;
temp = temp->next;
}
}
}
}*/
}
int addToWidgetsAlive(GtkWidget* inWidget, struct WidgetsAlive* dependants)
{
/*struct WidgetsAlive *temp, *node;
node = (struct WidgetsAlive*)malloc(sizeof(struct WidgetsAlive));
node->widPtr = inWidget;
node->widIndex = 1;
if (dependants != NULL)
node->dependants = dependants;
else
node->dependants = NULL;
node->next = NULL;
if (wAlive == NULL)
{
wAlive = node;
}
else
{
temp = wAlive;
while(temp->next != NULL)
{
temp = temp->next;
}
node->widIndex = temp->widIndex + 1;
temp->next = node;
}
return node->widIndex;*/
return 0;
}
int dispTextPage(char* fileName, int duration)
{
//dispTextPage_struct *params;
dispTextPage_struct *params;
params = (dispTextPage_struct*)malloc(sizeof(dispTextPage_struct));
params->fileName = fileName;
/*
memset(¶ms2,'\0',sizeof(dispTextPage_struct));
params2.fileName = fileName;*/
while(gtk_events_pending()){
gtk_main_iteration_do(FALSE);
g_usleep(1000);
}
printf("Gidel added \n");
waitForLoop=1;
g_idle_add_full(G_PRIORITY_DEFAULT_IDLE,dispTextPage_callBack,params,destroyNotify);
while(waitForLoop == 1){
g_usleep(1000);
}
free(params);
}
gboolean dispTextPage_callBack(dispTextPage_struct *params)
{
char* fileName = params -> fileName;
int index;
int isJustifyCenter = 0;
GtkWidget *textv;
GdkWindow *textv_window;
GdkPixmap *pixmap;
GtkTextBuffer* textBuffer;
GdkColor color;
printf("\ntextpage :,1\n");
destroyWidget(0);
textv = gtk_text_view_new ();
gtk_text_view_set_left_margin(GTK_TEXT_VIEW(textv), 22);
gtk_text_view_set_right_margin(GTK_TEXT_VIEW(textv), 20);
gtk_text_view_set_pixels_above_lines(GTK_TEXT_VIEW(textv),1);
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(textv), GTK_WRAP_CHAR);
if (isJustifyCenter == 1)
{
gtk_text_view_set_justification(GTK_TEXT_VIEW(textv), GTK_JUSTIFY_CENTER);
}
else
{
gtk_text_view_set_justification(GTK_TEXT_VIEW(textv), GTK_JUSTIFY_LEFT);
}
gtk_text_view_set_editable(GTK_TEXT_VIEW(textv), FALSE);
gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(textv), FALSE);
gtk_container_add(GTK_CONTAINER(window), textv);
printf("\ntextpage :,3\n");
textv_window = gtk_text_view_get_window (GTK_TEXT_VIEW (textv),GTK_TEXT_WINDOW_TEXT);
gdk_color_parse ("#68604d", &color);
pixmap = gdk_pixmap_create_from_xpm ((GdkDrawable *) textv_window, NULL,&color, fileName);
printf(" textpage :,4\n");
gdk_window_set_back_pixmap (textv_window, pixmap, FALSE);
g_object_unref(pixmap);
textBuffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textv));
gtk_text_buffer_create_tag (textBuffer, "bold","foreground", "Black", NULL);
gtk_text_buffer_create_tag (textBuffer, "Redbold","foreground", "Red",NULL);
gtk_text_buffer_create_tag (textBuffer, "fontSize","font", "saxmono 20",NULL);
gtk_text_buffer_create_tag (textBuffer, "smallFontSize", "font", "saxmono 14", NULL);
gtk_text_buffer_create_tag (textBuffer, "fontweight","weight", 1000,NULL);
index = addToWidgetsAlive(textv, NULL);
gtk_widget_show(textv);
gtk_widget_show(window);
//free(params);
return 0;
}
gboolean updateTextPage_callBack(updateTextPage_struct *params)
{
char* data = params -> data;
int row = params -> row;
int column = params -> column;
char textType = params -> textType;
char fontType = params -> fontType;
int i;
int j;
struct WidgetsAlive* textWindowWidget = NULL;
GtkWidget *tempTextWidgetPtr;
GtkTextBuffer *textBuffer;
gchar* tempLineStr;
char temp[512];
GtkTextIter endIter;
GtkTextIter startIter;
if(fontType == NORMAL_FONT)
{
if(row >15 || row < 0)
row =15;
if(column >31 || column < 0)
column =0;
}
// If there is no valid string to write, return
if ((data == NULL) || (strlen(data) == 0)){
free(params);
return FALSE;
}
textWindowWidget = getWidgetFromList(1);
if (textWindowWidget != NULL)
{
tempTextWidgetPtr = textWindowWidget->widPtr;
}
else
{
/* Error */
free(params);
return FALSE;
}
textBuffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(tempTextWidgetPtr));
gtk_text_buffer_get_end_iter (textBuffer, &endIter);
gtk_text_buffer_get_start_iter (textBuffer, &startIter);
i = gtk_text_buffer_get_line_count(textBuffer);
memset(temp, '\0', sizeof(temp));
if (i < (row+1))
{
for (j = i; j < (row + 1); j++)
{
strcat(temp, "\n");
}
//Move one char forward if you are at the newline char
while ((gtk_text_iter_get_char(&endIter) != 0))
{
gtk_text_iter_forward_char(&endIter);
}
gtk_text_buffer_insert(textBuffer,&endIter, temp, -1);
gtk_text_buffer_get_end_iter (textBuffer, &endIter);
gtk_text_buffer_get_iter_at_line(textBuffer, &endIter, row);
memset(temp, '\0', sizeof(temp));
for (j = 0; j < column+1; j++)
{
strcat(temp, " ");
}
gtk_text_buffer_insert(textBuffer, &endIter, temp, -1);
}
else
{
gtk_text_buffer_get_iter_at_line(textBuffer, &startIter, row);
gtk_text_buffer_get_iter_at_line(textBuffer, &endIter, row);
gtk_text_view_forward_display_line_end(GTK_TEXT_VIEW(tempTextWidgetPtr), &endIter);
tempLineStr = gtk_text_buffer_get_text(textBuffer, &startIter, &endIter, FALSE);
memset(temp, '\0', sizeof(temp));
i = strlen(tempLineStr);
if (column > i)
{
for (j = 0; j < (column - i); j++)
{
strcat(temp, " ");
}
gtk_text_buffer_insert(textBuffer,&endIter, temp, -1);
}
}
gtk_text_buffer_get_iter_at_line_offset(textBuffer, &startIter, row, column);
endIter = startIter;
i = strlen(data);
j = 0;
while (j < i)
{
if ((gtk_text_iter_get_char(&endIter) == '\n'))
{
gtk_text_iter_backward_char(&endIter);
break;
}
gtk_text_iter_forward_char(&endIter);
j++;
}
if (gtk_text_iter_compare(&endIter, &startIter) == 1) // delete only if enditer is greater than startiter
gtk_text_buffer_delete( textBuffer, &startIter, &endIter);
memset(temp, '\0', sizeof(temp));
j = strlen(data);
if ( ((j + column) > 32) && (fontType == NORMAL_FONT))
{
strncpy(temp, data, (32 - column));
}
else
{
strncpy(temp, data, j);
}
gtk_text_buffer_insert(textBuffer,&startIter, temp, -1);
gtk_text_buffer_get_end_iter (textBuffer, &endIter);
gtk_text_buffer_get_start_iter (textBuffer, &startIter);
if(textType==NORMAL_TEXT)
gtk_text_buffer_apply_tag_by_name (textBuffer, "bold", &startIter, &endIter);
else
{
gtk_text_buffer_get_iter_at_line_offset(textBuffer, &startIter, row, column);
gtk_text_buffer_apply_tag_by_name (textBuffer, "Redbold", &startIter, &endIter);
}
if((fontType == NORMAL_FONT) || (fontType == NORM_FONT_UNLTD))
{
gtk_text_buffer_apply_tag_by_name (textBuffer, "fontSize", &startIter, &endIter);
}
else
{
gtk_text_buffer_get_iter_at_line_offset(textBuffer, &startIter, row, column);
gtk_text_buffer_apply_tag_by_name (textBuffer, "smallFontSize", &startIter, &endIter);
}
gtk_text_buffer_apply_tag_by_name (textBuffer, "fontweight", &startIter, &endIter);
gtk_widget_show(tempTextWidgetPtr);
gtk_widget_show_all(window);
free(params);
return FALSE;
}
void updateTextPage(char* data, int row, int column,char textType,char fontType)
{
updateTextPage_struct *params;
params = (updateTextPage_struct*)malloc(sizeof(updateTextPage_struct));
params->data = data;
params->row = row;
params->column = column;
params->textType = textType;
params->fontType = fontType;
while(gtk_events_pending())
{
usleep(1000);
}
waitForLoop=1;
g_idle_add_full(G_PRIORITY_DEFAULT_IDLE,updateTextPage_callBack,params,destroyNotify);
while(waitForLoop == 1){
usleep(1000);
}
}
void *fsmThread_RunFunction1()
{
int atmMsgRetVal;
static STRUCT_MSG atmRxMsg;
while(1)
{
memset(&atmRxMsg,'\0',sizeof(STRUCT_MSG));
atmMsgRetVal = PendMessageQ(FSM_CHANNEL,&atmRxMsg);
if(atmMsgRetVal == 0)
{
if(ProcessfsmMessage(atmRxMsg.msgType, (char *)atmRxMsg.msgBuf))
continue;
}
else{
//sleep(1);
usleep(10*1000);
}
}
}
int ProcessfsmMessage(int msgType, char *msgBuf)
{
printf("fsmThread_RunFunction data recieved %s\n",msgBuf);
}
void *fsmThread_RunFunction()
{
int pollMsgRetVal = -1;
sleep(5000);
dispTextPage("icon132.gif",0);
char data[500] = "FSM POST MESSAGE\n";
while(1){
printf("Now Entry for fsmThread_RunFunction\n");
PostMessageQ(FSM_CHANNEL,1, data,strlen(data));
dispTextPage("icon165.gif",0);
sleep(500);
printf("Now Exit for fsmThread_RunFunction\n");
}
}
int main(int argc, char *argv[])
{
GThread *fsmThreadId,*fsmThreadId1;
GError *error = NULL;
g_thread_init(NULL);
//dispInit(argc, argv);
// sleep(5000);
CreateMessageQ(FSM_CHANNEL);
printf("Initializing the display library\n");
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_resize(GTK_WINDOW(window), 640, 480);
gtk_window_set_default_size(GTK_WINDOW(window), 640, 480);
gtk_widget_realize( window );
gtk_window_set_decorated(GTK_WINDOW(window), FALSE);
dispInfoPage("icon165.gif",1);
sleep(5000);
printf("Now create ethread ");
fsmThreadId = g_thread_create(fsmThread_RunFunction,NULL,TRUE,&error);
if (error) {
fflush(stderr);
exit(1);
}
fsmThreadId1 = g_thread_create(fsmThread_RunFunction1,NULL,TRUE,&error);
if (error) {
fflush(stderr);
exit(1);
}
gtk_main();
g_thread_join(fsmThreadId);
sleep(2);
printf("ENd of main");
return 0;
}
int PostMessageQ(int channel, int msgType, char *msgBuf, int msgSize)
{
STRUCT_MSG txMsg;
memset(&txMsg,'\0',sizeof(STRUCT_MSG));
txMsg.msgType = msgType;
txMsg.msgSize = msgSize;
memcpy(&txMsg.msgBuf[0],&msgBuf[0],msgSize);
g_queue_push_head (msgQueueId[channel], (char *)&txMsg);
return 0;
}
int PendMessageQ(int channel,STRUCT_MSG* rxMsgptr)
{
if (g_queue_is_empty(msgQueueId[channel])){
return 1;
}
STRUCT_MSG* rxMsg = (STRUCT_MSG*) malloc(sizeof(STRUCT_MSG));
rxMsg = ( STRUCT_MSG*) g_queue_pop_tail (msgQueueId[channel]);
rxMsgptr->msgType = rxMsg->msgType;
rxMsgptr->msgSize = rxMsg->msgSize;
memcpy(&rxMsgptr->msgBuf[0],&rxMsg->msgBuf[0],sizeof(rxMsg->msgBuf));
free(rxMsg);
return 0;
}
void CreateMessageQ (int channel)
{
G_LOCK (queue_memchunk);
msgQueueId[channel] = g_trash_stack_pop (&free_queue_nodes);
if (!msgQueueId[channel])
{
if (!queue_memchunk)
queue_memchunk = g_mem_chunk_new ("GLib GQueue chunk",
sizeof (GNode),
sizeof (GNode) * 128,
G_ALLOC_ONLY);
msgQueueId[channel] = g_chunk_new (GQueue, queue_memchunk);
}
G_UNLOCK (queue_memchunk);
msgQueueId[channel]->head = NULL;
msgQueueId[channel]->tail = NULL;
msgQueueId[channel]->length = 0;
}
答案 0 :(得分：1)
你没有给我们你正在使用的GTK版本，但这可能是一些旧的GTK 2版本的已知问题。检查我对这个问题的回答：https://stackoverflow.com/a/12950519/518853
订阅bug 707760以跟踪捆绑更新。
答案 1 :(得分：0)
创建了不需要的GQUEUE，如下所示更改了CreateMessageQ：
void CreateMessageQ（int channel） { msgQueueId [channel] = g_queue_new（）; }
PendMessageQ free的变化是个问题：
int PendMessageQ（int channel，STRUCT_MSG * rxMsgptr） { while（g_queue_is_empty（msgQueueId [channel]））{ g_usleep（10 * 1000）; } char data =（data ）g_queue_pop_tail（msgQueueId [channel]）; 的memcpy（＆安培; rxMsgptr-＆GT; msgBuf [0]，＆安培;数据[0]，的sizeof（数据））; 自由（数据）; 返回0; }