GUI: add active timeouts and busy memory blocks counters

- Add timeout_heap_get_size() to get active timer count
- Add global counters in memory_pool: g_total_free and g_total_allocated
- Simplify busy memory calculation to single formula:
  busy = memory_pool_get_total_allocated() - memory_pool_get_total_free_blocks()
- Add new IDC_EDIT_ACTIVE_TIMEOUTS and IDC_EDIT_BUSY_MEMORY to GUI

lib/memory_pool.c

@@ -5,6 +5,17 @@
 #include "memory_pool.h"
 #include "mem.h"
 
+static size_t g_total_free = 0;
+static size_t g_total_allocated = 0;
+
+size_t memory_pool_get_total_free_blocks(void) {
+    return g_total_free;
+}
+
+size_t memory_pool_get_total_allocated(void) {
+    return g_total_allocated;
+}
+
 // Инициализировать пул памяти
 struct memory_pool* memory_pool_init(size_t object_size) {
     struct memory_pool* pool = u_calloc(1, sizeof(struct memory_pool));
@@ -29,6 +40,7 @@ void* memory_pool_alloc_impl(struct memory_pool* pool, const char* location) {
         void* obj = pool->free_head;
         pool->free_head = *(void**)obj;  // Извлекаем next из начала блока
         pool->free_count--;
+        g_total_free--;
         pool->reuse_count++;
         memset(obj, 0, pool->object_size);  // Опционально: очищаем память для безопасности
         DEBUG_INFO(DEBUG_CATEGORY_MEMORY, "pool_alloc reused: %s, remaining=%zu", location, pool->free_count);
@@ -36,6 +48,7 @@ void* memory_pool_alloc_impl(struct memory_pool* pool, const char* location) {
     }
 
     pool->allocations++;
+    g_total_allocated++;
     DEBUG_INFO(DEBUG_CATEGORY_MEMORY, "pool_alloc: %s, total_allocs=%zu", location, pool->allocations);
     return u_calloc_impl(1, pool->object_size, location);  // Используем calloc для инициализации нулями
 }
@@ -51,6 +64,7 @@ void memory_pool_free_impl(struct memory_pool* pool, void* obj, const char* loca
         *(void**)obj = pool->free_head;  // Сохраняем next в начало блока
         pool->free_head = obj;
         pool->free_count++;
+        g_total_free++;
         DEBUG_INFO(DEBUG_CATEGORY_MEMORY, "pool_free returned: %s, free_count=%zu", location, pool->free_count);
         return;
     }
@@ -84,6 +98,8 @@ void memory_pool_destroy(struct memory_pool* pool) {
     void* obj = pool->free_head;
     while (obj) {
         void* next = *(void**)obj;
+        g_total_free--;
+        g_total_allocated--;
         u_free(obj);
         cnt++;
         obj = next;

lib/memory_pool.h

@@ -28,6 +28,8 @@ void memory_pool_destroy(struct memory_pool* pool);
 void* memory_pool_alloc_impl(struct memory_pool* pool, const char* location);
 void memory_pool_free_impl(struct memory_pool* pool, void* obj, const char* location);
 void memory_pool_get_stats(struct memory_pool* pool, size_t* allocations, size_t* reuse_count);
+size_t memory_pool_get_total_free_blocks(void);
+size_t memory_pool_get_total_allocated(void);
 
 #define memory_pool_alloc(pool) memory_pool_alloc_impl(pool, PLOCATION)
 #define memory_pool_free(pool, obj) memory_pool_free_impl(pool, obj, PLOCATION)

lib/timeout_heap.c

@@ -164,3 +164,8 @@ void timeout_heap_set_free_callback(TimeoutHeap *h, void* user_data, void (*call
     h->user_data = user_data;
     h->free_callback = callback;
 }
+
+size_t timeout_heap_get_size(TimeoutHeap *h) {
+    if (!h) return 0;
+    return h->size;
+}

lib/timeout_heap.h

@@ -89,4 +89,6 @@ int timeout_heap_cancel(TimeoutHeap *h, TimeoutTime expiration, void *data);
  */
 size_t timeout_heap_get_freed_count(TimeoutHeap *h);
 
+size_t timeout_heap_get_size(TimeoutHeap *h);
+
 #endif // TIMEOUT_HEAP_H

src/control_server.c

@@ -14,6 +14,8 @@
 #include "pkt_normalizer.h"
 #include "../tools/etcpmon/etcpmon_protocol.h"
 #include "../lib/u_async.h"
+#include "../lib/timeout_heap.h"
+#include "../lib/memory_pool.h"
 #include "../lib/debug_config.h"
 #include "../lib/mem.h"
 #include "../lib/ll_queue.h"
@@ -972,6 +974,15 @@ static void send_metrics(struct control_server* server, struct control_client* c
         rsp->etcp.debug[i] = conn->debug[i];
     }
 
+    /* System resources */
+    if (instance->ua && instance->ua->timeout_heap) {
+        rsp->etcp.active_timeouts = (uint32_t)timeout_heap_get_size(instance->ua->timeout_heap);
+    } else {
+        rsp->etcp.active_timeouts = 0;
+    }
+
+    rsp->etcp.busy_memory_blocks = (uint32_t)(memory_pool_get_total_allocated() - memory_pool_get_total_free_blocks());
+    
     /* Fill TUN metrics */
     if (instance->tun) {
         rsp->tun.bytes_read = instance->tun->bytes_read;

tools/etcpmon/etcpmon_gui.c

@@ -549,6 +549,20 @@ static void CreateControls(struct etcpmon_app* app) {
         WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
         q_col2 + 110, qy - 2, 50, 18, hWnd, (HMENU)IDC_EDIT_TIMER_ACK_RESP, hInst, NULL);
 
+    /* System resources - below timer flags */
+    qy += 28;
+    CreateWindowExA(0, "STATIC", "Timeouts:",
+        WS_CHILD | WS_VISIBLE, q_col1, qy, 60, 16, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
+    app->hEditActiveTimeouts = CreateWindowExA(WS_EX_CLIENTEDGE, "EDIT", "",
+        WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
+        q_col1 + 65, qy - 2, 50, 18, hWnd, (HMENU)IDC_EDIT_ACTIVE_TIMEOUTS, hInst, NULL);
+
+    CreateWindowExA(0, "STATIC", "Memory:",
+        WS_CHILD | WS_VISIBLE, q_col2, qy, 50, 16, hWnd, (HMENU)IDC_STATIC, hInst, NULL);
+    app->hEditBusyMemory = CreateWindowExA(WS_EX_CLIENTEDGE, "EDIT", "",
+        WS_CHILD | WS_VISIBLE | ES_READONLY | ES_CENTER,
+        q_col2 + 60, qy - 2, 60, 18, hWnd, (HMENU)IDC_EDIT_BUSY_MEMORY, hInst, NULL);
+    
     /* WaitAck queue state */
     qy += 30;
     CreateWindowExA(0, "STATIC", "WaitAck:",
@@ -1089,6 +1103,10 @@ void etcpmon_gui_update_metrics(struct etcpmon_app* app,
         UpdateEditIfChanged(hMain, IDC_EDIT_DEBUG_0 + i, "%u", metrics->etcp.debug[i]);
     }
 
+    /* System resources */
+    UpdateEditIfChanged(hMain, IDC_EDIT_ACTIVE_TIMEOUTS, "%u", metrics->etcp.active_timeouts);
+    UpdateEditIfChanged(hMain, IDC_EDIT_BUSY_MEMORY,      "%u", metrics->etcp.busy_memory_blocks);
+    
     /* Links list */
     if (app->hListLinks) {
         SendMessage(app->hListLinks, LB_RESETCONTENT, 0, 0);

tools/etcpmon/etcpmon_gui.h

@@ -146,6 +146,10 @@ extern "C" {
 #define IDC_EDIT_DEBUG_6         692
 #define IDC_EDIT_DEBUG_7         693
 
+/* System resources IDs */
+#define IDC_EDIT_ACTIVE_TIMEOUTS  700
+#define IDC_EDIT_BUSY_MEMORY      701
+
 /* Graph control ID */
 #define IDC_GRAPH              500
 
@@ -285,6 +289,10 @@ struct etcpmon_app {
     HWND hEditTxState;
     HWND hEditDebug[8];
 
+    /* System resources */
+    HWND hEditActiveTimeouts;
+    HWND hEditBusyMemory;
+    
     /* Graph controls */
     HWND hGraphWnd;
     HWND hChannelName[GRAPH_METRICS_COUNT];

tools/etcpmon/etcpmon_protocol.h

@@ -192,6 +192,10 @@ struct etcpmon_etcp_metrics {
     uint32_t cnt_link_wait;
     uint32_t tx_state;
     uint32_t debug[8];
+
+    /* System resources */
+    uint32_t active_timeouts;
+    uint32_t busy_memory_blocks;
 };
 
 /* Link metrics */