From f94bd05736b88f1fd2b7642495395ed322b7897f Mon Sep 17 00:00:00 2001 From: Sam Lantinga Date: Thu, 13 Oct 2016 04:53:01 -0700 Subject: [PATCH] Fixed bug 3451 - Raspberry Pi Raspbian SDL_assert triggered sometimes at RPI_WarpMouseGlobal Eric wing Sometimes an SDL_assert triggers at RPI_WarpMouseGlobal src/video/raspberry/SDL_rpimouse.c:232 'update'. It doesn't always reproduce, but it seems to happen when you really bog down the system and the event loop can't update for awhile. The first time I hit this, I wasn't even using the mouse. I don't call any warp mouse functions either. I can usually reproduce with a simple program that runs an expensive blocking CPU series of functions which blocks the main loop until complete (can be up to 10 seconds). Sometimes this assertion gets triggered after that. I'm not sure if they are related or coincidental. Disabling the SDL_asserts when compiling SDL will avoid this problem. I actually haven't seen any problems with the mouse when I do this. On a Raspberry Pi 2 running Raspbian Jessie. --- src/video/raspberry/SDL_rpimouse.c | 129 +++++++++++++++-------------- 1 file changed, 68 insertions(+), 61 deletions(-) diff --git a/src/video/raspberry/SDL_rpimouse.c b/src/video/raspberry/SDL_rpimouse.c index 64b986b82..3a84254ae 100644 --- a/src/video/raspberry/SDL_rpimouse.c +++ b/src/video/raspberry/SDL_rpimouse.c @@ -87,17 +87,17 @@ RPI_CreateCursor(SDL_Surface * surface, int hot_x, int hot_y) curdata->h = surface->h; /* This usage is inspired by Wayland/Weston RPI code, how they figured this out is anyone's guess */ - curdata->resource = vc_dispmanx_resource_create( VC_IMAGE_ARGB8888, surface->w | (surface->pitch << 16), surface->h | (surface->h << 16), &dummy ); + curdata->resource = vc_dispmanx_resource_create(VC_IMAGE_ARGB8888, surface->w | (surface->pitch << 16), surface->h | (surface->h << 16), &dummy); SDL_assert(curdata->resource); - vc_dispmanx_rect_set( &dst_rect, 0, 0, curdata->w, curdata->h); + vc_dispmanx_rect_set(&dst_rect, 0, 0, curdata->w, curdata->h); /* A note from Weston: * vc_dispmanx_resource_write_data() ignores ifmt, * rect.x, rect.width, and uses stride only for computing * the size of the transfer as rect.height * stride. * Therefore we can only write rows starting at x=0. */ - ret = vc_dispmanx_resource_write_data( curdata->resource, VC_IMAGE_ARGB8888, surface->pitch, surface->pixels, &dst_rect ); - SDL_assert ( ret == DISPMANX_SUCCESS ); + ret = vc_dispmanx_resource_write_data(curdata->resource, VC_IMAGE_ARGB8888, surface->pitch, surface->pixels, &dst_rect); + SDL_assert (ret == DISPMANX_SUCCESS); cursor->driverdata = curdata; @@ -126,15 +126,15 @@ RPI_ShowCursor(SDL_Cursor * cursor) if (cursor == NULL) { /* FIXME: We hide the current mouse's cursor, what we actually need is *_HideCursor */ - if ( mouse->cur_cursor != NULL && mouse->cur_cursor->driverdata != NULL) { + if (mouse->cur_cursor != NULL && mouse->cur_cursor->driverdata != NULL) { curdata = (RPI_CursorData *) mouse->cur_cursor->driverdata; if (curdata->element > DISPMANX_NO_HANDLE) { - update = vc_dispmanx_update_start( 10 ); - SDL_assert( update ); - ret = vc_dispmanx_element_remove( update, curdata->element ); - SDL_assert( ret == DISPMANX_SUCCESS ); - ret = vc_dispmanx_update_submit_sync( update ); - SDL_assert( ret == DISPMANX_SUCCESS ); + update = vc_dispmanx_update_start(10); + SDL_assert(update); + ret = vc_dispmanx_element_remove(update, curdata->element); + SDL_assert(ret == DISPMANX_SUCCESS); + ret = vc_dispmanx_update_submit_sync(update); + SDL_assert(ret == DISPMANX_SUCCESS); curdata->element = DISPMANX_NO_HANDLE; } } @@ -161,13 +161,13 @@ RPI_ShowCursor(SDL_Cursor * cursor) } if (curdata->element == DISPMANX_NO_HANDLE) { - vc_dispmanx_rect_set( &src_rect, 0, 0, curdata->w << 16, curdata->h << 16 ); - vc_dispmanx_rect_set( &dst_rect, 0, 0, curdata->w, curdata->h); + vc_dispmanx_rect_set(&src_rect, 0, 0, curdata->w << 16, curdata->h << 16); + vc_dispmanx_rect_set(&dst_rect, 0, 0, curdata->w, curdata->h); - update = vc_dispmanx_update_start( 10 ); - SDL_assert( update ); + update = vc_dispmanx_update_start(10); + SDL_assert(update); - curdata->element = vc_dispmanx_element_add( update, + curdata->element = vc_dispmanx_element_add(update, data->dispman_display, SDL_RPI_MOUSELAYER, // layer &dst_rect, @@ -176,10 +176,10 @@ RPI_ShowCursor(SDL_Cursor * cursor) DISPMANX_PROTECTION_NONE, &alpha, DISPMANX_NO_HANDLE, // clamp - VC_IMAGE_ROT0 ); - SDL_assert( curdata->element > DISPMANX_NO_HANDLE); - ret = vc_dispmanx_update_submit_sync( update ); - SDL_assert( ret == DISPMANX_SUCCESS ); + VC_IMAGE_ROT0); + SDL_assert(curdata->element > DISPMANX_NO_HANDLE); + ret = vc_dispmanx_update_submit_sync(update); + SDL_assert(ret == DISPMANX_SUCCESS); } return 0; @@ -198,17 +198,17 @@ RPI_FreeCursor(SDL_Cursor * cursor) if (curdata != NULL) { if (curdata->element != DISPMANX_NO_HANDLE) { - update = vc_dispmanx_update_start( 10 ); - SDL_assert( update ); - ret = vc_dispmanx_element_remove( update, curdata->element ); - SDL_assert( ret == DISPMANX_SUCCESS ); - ret = vc_dispmanx_update_submit_sync( update ); - SDL_assert( ret == DISPMANX_SUCCESS ); + update = vc_dispmanx_update_start(10); + SDL_assert(update); + ret = vc_dispmanx_element_remove(update, curdata->element); + SDL_assert(ret == DISPMANX_SUCCESS); + ret = vc_dispmanx_update_submit_sync(update); + SDL_assert(ret == DISPMANX_SUCCESS); } if (curdata->resource != DISPMANX_NO_HANDLE) { - ret = vc_dispmanx_resource_delete( curdata->resource ); - SDL_assert( ret == DISPMANX_SUCCESS ); + ret = vc_dispmanx_resource_delete(curdata->resource); + SDL_assert(ret == DISPMANX_SUCCESS); } SDL_free(cursor->driverdata); @@ -235,41 +235,48 @@ RPI_WarpMouseGlobal(int x, int y) VC_RECT_T src_rect; SDL_Mouse *mouse = SDL_GetMouse(); - if (mouse != NULL && mouse->cur_cursor != NULL && mouse->cur_cursor->driverdata != NULL) { - curdata = (RPI_CursorData *) mouse->cur_cursor->driverdata; - if (curdata->element != DISPMANX_NO_HANDLE) { - update = vc_dispmanx_update_start( 10 ); - SDL_assert( update ); - src_rect.x = 0; - src_rect.y = 0; - src_rect.width = curdata->w << 16; - src_rect.height = curdata->h << 16; - dst_rect.x = x; - dst_rect.y = y; - dst_rect.width = curdata->w; - dst_rect.height = curdata->h; + if (mouse == NULL || mouse->cur_cursor == NULL || mouse->cur_cursor->driverdata == NULL) { + return 0; + } - ret = vc_dispmanx_element_change_attributes( - update, - curdata->element, - 0, - 0, - 0, - &dst_rect, - &src_rect, - DISPMANX_NO_HANDLE, - DISPMANX_NO_ROTATE); - if (ret != DISPMANX_SUCCESS ) { - return SDL_SetError("vc_dispmanx_element_change_attributes() failed"); - } + curdata = (RPI_CursorData *) mouse->cur_cursor->driverdata; + if (curdata->element == DISPMANX_NO_HANDLE) { + return 0; + } - /* Submit asynchronously, otherwise the peformance suffers a lot */ - ret = vc_dispmanx_update_submit( update, 0, NULL ); - if (ret != DISPMANX_SUCCESS ) { - return SDL_SetError("vc_dispmanx_update_submit() failed"); - } - } - } + update = vc_dispmanx_update_start(10); + if (!update) { + return 0; + } + + src_rect.x = 0; + src_rect.y = 0; + src_rect.width = curdata->w << 16; + src_rect.height = curdata->h << 16; + dst_rect.x = x; + dst_rect.y = y; + dst_rect.width = curdata->w; + dst_rect.height = curdata->h; + + ret = vc_dispmanx_element_change_attributes( + update, + curdata->element, + 0, + 0, + 0, + &dst_rect, + &src_rect, + DISPMANX_NO_HANDLE, + DISPMANX_NO_ROTATE); + if (ret != DISPMANX_SUCCESS) { + return SDL_SetError("vc_dispmanx_element_change_attributes() failed"); + } + + /* Submit asynchronously, otherwise the peformance suffers a lot */ + ret = vc_dispmanx_update_submit(update, 0, NULL); + if (ret != DISPMANX_SUCCESS) { + return SDL_SetError("vc_dispmanx_update_submit() failed"); + } return 0; }