retry shm open

osd/util/Render_Rockchip.c

@@ -35,14 +35,22 @@ typedef struct {
 extern int AHI_TiltY;
 int Init_x86(uint16_t *width, uint16_t *height) {
     // Create shared memory region
-
     const char *shm_name = "msposd"; // Name of the shared memory region
-
-    // Open the shared memory segment
-    int shm_fd = shm_open(shm_name, O_RDWR, 0666);
-    if (shm_fd == -1) {
-        perror("Failed to open shared memory");
-        return -1;
+    int shm_fd = -1;
+
+    // Wait until the shared memory segment exists
+    while (shm_fd == -1) {
+        shm_fd = shm_open(shm_name, O_RDWR, 0666);
+        if (shm_fd == -1) {
+            if (errno == ENOENT) {
+                printf("Shared memory '%s' does not exist. Waiting...\n", shm_name);
+                sleep(1); // Wait for 1 second before trying again
+                continue;
+            } else {
+                perror("Failed to open shared memory");
+                return -1;
+            }
+        }
     }
 
     // Map just the header to read width and height