mirror of
https://github.com/google/pebble.git
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120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/*
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* Copyright 2024 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "app_window_stack.h"
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#include "window.h"
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#include "window_stack.h"
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#include "window_stack_private.h"
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#include "console/prompt.h"
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#include "kernel/event_loop.h"
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#include "kernel/pbl_malloc.h"
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#include "process_state/app_state/app_state.h"
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#include "system/logging.h"
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#include "util/list.h"
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#include "util/size.h"
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#include "FreeRTOS.h"
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#include "semphr.h"
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void app_window_stack_push(Window *window, bool animated) {
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PBL_LOG(LOG_LEVEL_DEBUG, "Pushing window %p onto app window stack %p",
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window, app_state_get_window_stack());
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window_stack_push(app_state_get_window_stack(), window, animated);
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}
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void app_window_stack_insert_next(Window *window) {
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window_stack_insert_next(app_state_get_window_stack(), window);
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}
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Window *app_window_stack_pop(bool animated) {
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return window_stack_pop(app_state_get_window_stack(), animated);
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}
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void app_window_stack_pop_all(const bool animated) {
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window_stack_pop_all(app_state_get_window_stack(), animated);
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}
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bool app_window_stack_remove(Window *window, bool animated) {
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return window_stack_remove(window, animated);
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}
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Window *app_window_stack_get_top_window(void) {
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return window_stack_get_top_window(app_state_get_window_stack());
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}
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bool app_window_stack_contains_window(Window *window) {
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return window_stack_contains_window(app_state_get_window_stack(), window);
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}
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uint32_t app_window_stack_count(void) {
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return window_stack_count(app_state_get_window_stack());
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}
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// Commands
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////////////////////////////////////
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typedef struct WindowStackInfoContext {
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SemaphoreHandle_t interlock;
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WindowStackDump *dump;
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size_t count;
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} WindowStackInfoContext;
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static void prv_window_stack_info_cb(void *ctx) {
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// Note: Because of the nature of modal windows that has us re-using the Window Stack code for
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// everything (for simplicity), while a normal call to any of the stack functions would yield
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// us the appropriate window stack based on our current task, for the sake of this command, we
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// only care about the application's window stack, so we'll work with that directly.
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WindowStackInfoContext *info = ctx;
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WindowStack *stack = app_state_get_window_stack();
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info->count = window_stack_dump(stack, &info->dump);
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xSemaphoreGive(info->interlock);
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}
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void command_window_stack_info(void) {
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struct WindowStackInfoContext info = {
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.interlock = xSemaphoreCreateBinary(),
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};
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if (!info.interlock) {
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prompt_send_response("Couldn't allocate semaphore for window stack");
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return;
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}
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// FIXME: Dumping the app window stack from another task without a
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// lock exposes us to the possibility of catching the window stack in
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// an inconsistent state. It's been like this for years without issue
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// but we could just be really lucky. Switch to the app task to dump
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// the window stack?
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launcher_task_add_callback(prv_window_stack_info_cb, &info);
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xSemaphoreTake(info.interlock, portMAX_DELAY);
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vSemaphoreDelete(info.interlock);
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if (info.count > 0 && !info.dump) {
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prompt_send_response("Couldn't allocate buffers for window stack data");
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goto cleanup;
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}
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char buffer[128];
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prompt_send_response_fmt(
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buffer, sizeof(buffer),
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"Window Stack, top to bottom: (%zu)", info.count);
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for (size_t i = 0; i < info.count; ++i) {
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prompt_send_response_fmt(buffer, sizeof(buffer), "window %p <%s>",
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info.dump[i].addr, info.dump[i].name);
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}
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cleanup:
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kernel_free(info.dump);
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}
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