/* * 模块名称：控制台单写者日志（console_log）主机侧单元测试 * 模块功能：在 PC 上离线验证 App/log/console_log.c 的单写者契约（G1~G5 / K1~K5，见 * docs/子系统设计/控制台单写者日志设计说明.md）：环形缓冲入环与分块发送、 * 行级原子、192B 截断、写者未注册/ISR 上下文的直发（未注册期自 2026-10-26 * 起是**整行独占**，不再是"无锁"：M 族 TC-CONLOG-170 至 TC-CONLOG-179 钉"别的写者插不进 * 一行、让路行逐字节等同直发、让位不丢、真溢出才 [ERR]"）、缓冲满有界等待与 * 丢弃可观测、TX 僵尸通道软复位自愈 + 300ms 冷却、DWT 与指令计数两种硬上界、 * huart5.Instance 未初始化的 NULL 短路、fputc 重定向、drain 250ms 预算、 * 整行所有权（行级单一所有者，道G task-23）。 * * 为什么要主机侧单测（而不是只用台架）： * 本模块的风险全在"异常时刻"——UART 僵尸通道卡死、TIM7 停摆导致 uwTick 不往前走、 * 开机 1.7s 喂狗容限被背靠背块超时吃掉（台架实测的停喂误复位）、写者注册前多任务裸发 * 逐字节交错（2026-10-10/10-12 台架实证）。台架上这些要么一年一遇、要么现场已被 * 复位冲掉；而它们的判据全是"数得清的数"：192B 上限、256B 分块、4095B 可用环、 * 200 tick 等待、20000 次计数上界、100/250/300ms 三条时间线。把它们做成断言，是这台 * 设备上唯一能把这几条线钉死的办法（板端套件只能"在真机上跑一遍"）。 * * 桩的边界（细节见 stub/stm32f4_fake.h 头注释）： * console_log.h / sys_events.h（含真实 SYS_EVT_CONSOLE_TX 位）用**真实头**； * usart.h 用桩，但只暴露本模块访问的 huart5 + MX_UART5_Init，寄存器位号 / * 枚举值照抄真实头；USART SR 的 TXE/TC、DWT CYCCNT、HAL_GetTick、临界区、 * __get_IPSR、vTaskDelay、osEventFlagsSet 做成可控 + 可观测的量。 * ⚠ 本文件**刻意不定义**任何 syslog_* / DBG_* 符号：console_log.c 哪天把"TX 故障 * 留痕"改回直接调日志子系统，链接就失败——那正是必须挡住的（write_line → * con_append → drain → syslog_post → write_line 成环，静态栈深在每个任务上虚高）。 * * 覆盖点（编号族 TC-CONLOG-*，属主登记处 = 本文件；实占 127 号 / 127 条断言）： * 000..006 宿主 printf 与本模块 fputc 的隔离 + 参数校验与 192B 截断 * 010..018 写者未注册 = 无锁直发（不入环、不置事件位、零临界区、不等待、256B 有界） * 020..038 注册后走环形：入环不发送、按 256B 分块、多生产者不交错、跨环尾两段拷贝、 * 入环长度钳 RING/2 * 040..044 写者自记录先排空（不自等）/ drain 重入保护 / 未注册时 drain 让位 * 050..062 缓冲满：DWT 硬上界丢弃、不覆盖旧行、等待中出现空间、无 DWT 时 200 tick * 上界、[ERR] dropped 直发不经环、读后即清 * 070..088 TX 僵尸通道：软复位自愈序列、故障即止、WARN 只一次、tx_fault_log_take * 读后清、300ms 冷却两端、tick==0 也进冷却（哨兵撞值修好后为正向断言）、 * 半块 / 已上线仍判失败 * 090..106 DWT 惰性使能三处寄存器写、使能失败退回 20000 次指令计数、超时判据不读 * HAL_GetTick（第 8b 轮台架动机）、huart5.Instance == NULL 短路两路 + * "未初始化绝不 reinit"（误自愈修好后为正向断言）+ 证据不蒸发 * 110..117 fputc 重定向（未注册直发 / 注册逐字节入环 / ISR 上下文裸发 / 环满时 ISR * 仍不等待） * 120..122 drain 单次 250ms 预算与下轮续排（让位喂狗但不丢字节） * 130..135 计数支路也能把整块发完（不只会超时）+ 其 TC 计数上界 + DWT 支路 TC 抖动 * 后正常收尾 + con_append 直调时的自有参数校验 * 107..108 冷却截止 tick 跨 49.7 天回绕两端（无符号差值），改用独立标志后仍成立 * 140..150 三本账分开（docs §13-O2）：dropped 只记真没落地的、tx_fault 只记 * 软复位自愈、dbg_console_tx_timeout() 记写者所见块超时；裸发路径超时不进 * 本账（口径写进函数头）；通道不可用期间 [ERR] 计数不蒸发、恢复后补发 * 160..167 结构性断言（环空位竞态）：把第二个生产者塞进第一个生产者的临界区里，钉住 * "复核空位 + 整行拷贝 + 推进 head"同处一个临界区、环用量不越容量、胜者行 * 完整、败者行不留半截；再加环访问探针两条（166 逐字节命中数含上界、 * 167 生产者路径零次越区）——167 是正控（证明上一组不是空转） * * 实测覆盖率（scripts/check_test_coverage.py --module console_log，/Od + /Zi 口径）： * App/log/console_log.c **199/200 行 = 99.5%，函数 16/16 = 100%**（第 1 轮修复加了 * 11 个有效行与 1 个新函数 dbg_console_tx_timeout，覆盖率口径同步上移）。 * * 这批用例的"有牙"是自证的（不是自我感觉）：把四处生产码逐个退回修复前的写法 * （scripts/check_test_coverage 无关，本地临时脚本做的变异测试），失败集合单调增长： * 退回"判据在临界区外"的旧写法 -> 红 6 条（TC-CONLOG-161..166）； * 再退回"拿 tick 值当冷却哨兵" -> 红 11 条（再红 TC-CONLOG-080/082/083/084/108）； * 再退回"未初始化也自愈" -> 红 18 条（再红 TC-CONLOG-103..106/144/148/149）； * 四条全退回 -> 红 22 条（再红 TC-CONLOG-140/141/143/145）。 * 改回修复版即 127/127 全绿；每一步的失败集合都是上一步的超集，说明四组断言各自 * 咬住自己的那条语义，没有互相顶包。 * 2026-10-26（道G task-23，行级单一所有者）另做四处注入，逐个单独注入、各自归因、 * 每次改完逐字节还原（152 条基线复跑绿）： * 取消整行独占（退回"无条件直发"） -> 红 11 条（含 178 = 台架原文形态那条行）； * 让路改成静默丢弃（不入环也不计数） -> 红 5 条（170b/170c/171/178/179b）； * 归还所有权时不比属主（两道卫兵都拆） -> 红 1 条（179c；只拆外层里层仍守住时 * 测试全绿是**正确结果**，不是漏测）； * 把整段发送包进临界区（关中断 7.8ms） -> 红 3 条（015/015b/177 与 176）。 * ⚠ 顺带记一条注入方法论：第一版"取消整行独占"的锚点在 raw 与 drain 里各出现一次， * 被写入前的唯一性守卫挡下——模糊锚点会一改变两个地方，等于同时测两个变异。 * 也就是说：这些断言不是"写在假件规则上"的自证，而是真能咬住生产语义的。 * * 故意没测（逐行说明见交付报告）： * - console_log.c:383 唯一未覆盖行：snprintf 溢出后的钳位 `n = sizeof(note)-1`。 * note[64]，前缀 24B + "%lu"（unsigned long 最多 10 位）+ 后缀 8B = 最长 42B * < 63B，任何输入都到不了这一行 —— 纯防御，不是漏测。 * - 真实周期时间量级：主机没有真 DWT CYCCNT 也没有 TIM7 的 uwTick，只能钉"判据在 * 第几次读成立 / 自旋几次放弃"，不能声称"实测 100ms 就返回"。 * - ISR 与写者同时裸发的真总线交错（docs §13-O1）：宿主单线程，造不出两个执行流。 * - osEventFlagsWait 唤醒写者与 50ms 兜底：写者任务体在 App/task/default_task.c。 * - MicroLIB 真实 retarget 链接语义：宿主 CRT 有自己的 fputc（实测与本模块符号 * 冲突 -> LNK2005），故本 TU 把被测 fputc 改名纳入，只验函数体不验链接钩子。 * - 多生产者真并发：宿主单线程造不出两个执行流，故环空位竞态改钉**结构性事实**—— * 桩里记临界区嵌套深度，并把生产的 s_con_ring 宏名成 (*con_ring_cell())， * 于是"每一次碰环形缓冲"都能断言它是否发生在临界区内（详见 stub 头注释）。 * 这不是"模拟并发"，是把"判据与推进之间不出区"这句话本身变成可执行断言。 * * 通过：全部 TC PASS（main 返回 0）。 * 入口：int main(void)，返回 0=PASS / 1=FAIL；跑飞保险 exit(2)。 * * 创建日期：2026-10-24 */ #include #include #include #include /* 平台假件先纳入：它给出 USART/DWT/HAL/内核入口的宿主等价声明（stub 目录排第一） */ #include "stm32f4_fake.h" /* ===================== 假件全局量（声明见 stub/stm32f4_fake.h） ===================== */ uint32_t SystemCoreClock = 168000000U; /* 与 MCU 端一致（168 MHz） */ USART_TypeDef g_con_uart; CoreDebug_Type g_con_core_debug; DWT_Type g_con_dwt; UART_HandleTypeDef huart5; uint32_t con_uart_tx_n; uint8_t con_uart_tx[CON_UART_TX_MAX]; uint32_t con_uart_block_n; uint32_t con_uart_block_len[CON_UART_BLOCK_MAX]; uint32_t con_uart_cur_len; uint32_t con_uart_txe_reads; uint32_t con_uart_tc_reads; int con_uart_txe_stuck; int con_uart_txe_after; int con_uart_txe_ready_left; int con_uart_tc_after; int con_uart_tc_stuck; int con_uart_pending; uint32_t con_uart_tx_hook_at; /* 道G task-23：第 N 个字节上线后触发一次 */ void (*con_uart_tx_hook)(void); uint32_t con_uart_crit_at_tx_max; /* 上线字节所见最大临界区深度（硬红线水位） */ uint32_t con_dwt_step; int con_dwt_ctrl_sticky; uint32_t con_dwt_reads; uint32_t con_tick_now; uint32_t con_tick_step; uint32_t con_tick_reads; static char s_task_writer; /* 假写者任务句柄（取地址当不透明句柄） */ static char s_task_other; /* 假"别的任务"句柄 */ TaskHandle_t con_task_self; uint32_t con_delay_calls; void (*con_delay_hook)(void); uint32_t con_crit_enter; uint32_t con_crit_exit; uint32_t con_crit_max_depth; /* PRIMASK 版关中断窗口的账（道G task-26：本模块自己的取还/入环窗口用它，不再走内核 * 临界区 —— 那会把 configASSERT 环接进每一条含临界区的任务链，栈记账 9 链各 +80 B） */ uint32_t con_pm_enter; uint32_t con_pm_exit; uint32_t con_pm_max_depth; uint32_t con_pm_at_tx_max; void (*con_pm_hook)(void); static uint32_t s_pm_depth; static uint32_t s_crit_depth; /* 环形缓冲实体 + 探针（钩子本体在 stub/stm32f4_fake.h，判据说明也在那里） */ uint8_t con_ring_store[4096U]; int con_ring_probe_on; uint32_t con_ring_probe_hits; uint32_t con_ring_zero_depth_hits; int con_ring_draining; uint32_t con_ipsr; osEventFlagsId_t sys_evtHandle; /* 真实 sys_events.h 声明的全局句柄 */ static char s_evt_obj; /* 假事件组对象（非 NULL 即可） */ uint32_t con_evt_sets; uint32_t con_evt_flags; uint32_t con_nvic_clears; uint32_t con_rcc_disables; uint32_t con_rcc_enables; static uint32_t s_mx_init_calls; static int s_mx_repair; /* 1 = 重初始化把僵尸通道治好（模型行为） */ /* ===================== 假件实现 ===================== */ uint32_t HAL_GetTick(void) { uint32_t v = con_tick_now; con_tick_reads++; if (con_tick_reads > 2000000U) { printf("[FATAL] fake HAL_GetTick called %lu times (runaway)\n", (unsigned long)con_tick_reads); exit(2); } con_tick_now += con_tick_step; return v; } TaskHandle_t xTaskGetCurrentTaskHandle(void) { return con_task_self; } void vTaskDelay(TickType_t ticks) { (void)ticks; con_delay_calls++; if (con_delay_calls > 5000U) { printf("[FATAL] fake vTaskDelay called %lu times (runaway)\n", (unsigned long)con_delay_calls); exit(2); } if (con_delay_hook != 0) { con_delay_hook(); } } void (*con_crit_hook)(void); void con_crit_push(void) { con_crit_enter++; s_crit_depth++; if (s_crit_depth > con_crit_max_depth) { con_crit_max_depth = s_crit_depth; } if (con_crit_hook != 0) { con_crit_hook(); /* 深度已记好，注入体看到的是"已在区内" */ } } uint32_t con_crit_depth(void) { return s_crit_depth; } void con_crit_pop(void) { con_crit_exit++; if (s_crit_depth == 0U) { printf("[FATAL] critical section exit without enter\n"); exit(2); } s_crit_depth--; } /* PRIMASK 窗口桩：与上面的内核临界区平行（生产侧 __get_PRIMASK/__disable_irq/ * __set_PRIMASK 展开到这里）。成对建模即可——生产侧把 PRIMASK 存在**局部**变量里 * 并成对写回，所以嵌套时深度自然回升；未配对就退出说明生产代码写错了窗口。 */ void con_pm_push(void) { con_pm_enter++; s_pm_depth++; if (s_pm_depth > con_pm_max_depth) { con_pm_max_depth = s_pm_depth; } if (con_pm_hook != 0) { con_pm_hook(); /* 深度已记好：注入体看到的是"已在区内" */ } } void con_pm_pop(void) { con_pm_exit++; if (s_pm_depth == 0U) { printf("[FATAL] PRIMASK window exit without enter (unbalanced CON_CRIT_*)\n"); exit(2); } s_pm_depth--; } uint32_t con_pm_depth(void) { return s_pm_depth; } osStatus_t osEventFlagsSet(osEventFlagsId_t ef_id, uint32_t flags) { (void)ef_id; con_evt_sets++; con_evt_flags = flags; return (osStatus_t)flags; } /* 真实版是 CubeMX 生成的 HAL_UART_Init 封装；桩按脚本决定"软复位到底治没治好" */ void MX_UART5_Init(void) { s_mx_init_calls++; huart5.Instance = &g_con_uart; huart5.gState = HAL_UART_STATE_READY; huart5.ErrorCode = HAL_UART_ERROR_NONE; if (s_mx_repair != 0) { con_uart_txe_stuck = 0; con_uart_txe_after = 0; con_uart_txe_ready_left = -1; con_uart_tc_after = 0; con_uart_tc_stuck = 0; } } void con_uart_reset(void) { memset(&g_con_uart, 0xFF, sizeof(g_con_uart)); /* SR 恒全 1：就绪与否由钩子决定 */ con_uart_tx_n = 0U; con_uart_block_n = 0U; con_uart_cur_len = 0U; con_uart_txe_reads = 0U; con_uart_tc_reads = 0U; con_uart_txe_stuck = 0; con_uart_txe_after = 0; con_uart_txe_ready_left = -1; con_uart_tc_after = 0; con_uart_tc_stuck = 0; con_uart_pending = 0; } void con_dwt_reset(void) { memset(&g_con_dwt, 0, sizeof(g_con_dwt)); memset(&g_con_core_debug, 0, sizeof(g_con_core_debug)); con_dwt_step = 0U; con_dwt_ctrl_sticky = 1; con_dwt_reads = 0U; } /* ===================== 断言 ===================== */ static int s_total, s_passed, s_failed; #define CHECK(cond, name) do { \ s_total++; \ if (cond) { s_passed++; printf(" [PASS] %s\n", name); } \ else { s_failed++; printf(" [FAIL] %s (line %d)\n", name, __LINE__); } \ } while (0) /* ===================== 被测代码（原样纳入生产源） ===================== * ⚠ 唯一一处生产符号改名：**宿主 CRT 自己占用了 fputc 这个全局符号**（实测 * libucrt.lib(fputc.obj) 与本 TU 冲突 -> LNK2005 / LNK1169，ARMCC + MicroLIB 上 * 没有这件事，那里 fputc 正是留给用户实现的 retarget 钩子）。所以把被测函数临时 * 改名后再纳入，函数体与行覆盖统计一字未动，测试直接调 con_fputc_under_test 验它。 * 顺带回答"测试自己的 printf 会不会被这个钩子吞掉"：不会——宿主 CRT 用的是内部 * _fputc_nolock/_output 那条链，不解析用户态 fputc；TC-CONLOG-000 再钉一次。 */ #define fputc con_fputc_under_test #include "console_log.c" #undef fputc /* ===================== 复位：生产 static + 假件，一次不漏 ===================== */ static void reset_all(void) { /* 生产模块的 static（10 个数据项 + 1 个任务句柄）——漏一个就会跨场景污染 */ memset(s_con_ring, 0, sizeof(s_con_ring)); s_con_head = 0U; s_con_tail = 0U; s_con_drop = 0U; s_con_tx_fault = 0U; s_con_tx_fault_log = 0U; s_con_cool_until = 0U; s_con_cooling = 0U; s_con_tx_timeout = 0U; s_con_draining = 0U; s_con_writer_up = 0U; s_con_dwt_up = 0U; s_con_writer_task = 0; /* 道G task-23 的整行所有权凭证：跨场景必须显式清，否则上一场景留下的持有者会让 * 下一场景的裸发全部走环，症状正是"单独跑绿、连跑偶红" */ s_con_tx_owner = 0; s_con_tx_depth = 0U; /* 一次性把手先归零：上一条用例装填的钩子如果留在这儿，会把"第二个生产者"塞进 * 本条用例的某个随机字节之后（那种红比真缺陷还难查） */ con_uart_tx_hook_at = 0U; con_uart_tx_hook = 0; con_uart_crit_at_tx_max = 0U; con_uart_reset(); con_dwt_reset(); con_tick_now = 0U; con_tick_step = 0U; con_tick_reads = 0U; con_task_self = (TaskHandle_t)&s_task_other; con_delay_calls = 0U; con_delay_hook = 0; con_crit_hook = 0; con_crit_enter = 0U; con_crit_exit = 0U; con_crit_max_depth = 0U; s_crit_depth = 0U; /* PRIMASK 窗口一样要清：漏一项就是"单独跑绿、连跑偶红"（上一轮的教训） */ con_pm_enter = 0U; con_pm_exit = 0U; con_pm_max_depth = 0U; con_pm_at_tx_max = 0U; con_pm_hook = 0; s_pm_depth = 0U; memset(con_ring_store, 0, sizeof(con_ring_store)); con_ring_probe_on = 0; con_ring_probe_hits = 0U; con_ring_zero_depth_hits = 0U; con_ring_draining = 0; con_ipsr = 0U; sys_evtHandle = (osEventFlagsId_t)&s_evt_obj; con_evt_sets = 0U; con_evt_flags = 0U; con_nvic_clears = 0U; con_rcc_disables = 0U; con_rcc_enables = 0U; s_mx_init_calls = 0U; s_mx_repair = 0; huart5.Instance = &g_con_uart; huart5.gState = HAL_UART_STATE_READY; huart5.RxState = HAL_UART_STATE_READY; huart5.ErrorCode = HAL_UART_ERROR_NONE; } /* ===================== 观察辅助 ===================== */ static uint32_t used_now(void) { return con_used(); } static const char *tx_at(uint32_t skip) { return (skip >= con_uart_tx_n) ? "" : (const char *)&con_uart_tx[skip]; } static int tx_is(uint32_t skip, const char *s) { size_t n = strlen(s); if ((size_t)con_uart_tx_n < (size_t)skip + n) { return 0; } return memcmp(tx_at(skip), s, n) == 0; } /* 断言 [0, n) 全部是同一个字符（回绕场景下按字符比对，不依赖 NUL 结尾） */ static int tx_prefix_all(char c, uint32_t n) { uint32_t i; if (con_uart_tx_n < n) { return 0; } for (i = 0U; i < n; i++) { if (con_uart_tx[i] != (uint8_t)c) { return 0; } } return 1; } static int tx_at_is(char c, uint32_t skip, uint32_t n) { uint32_t i; if (con_uart_tx_n < skip + n) { return 0; } for (i = 0U; i < n; i++) { if (con_uart_tx[skip + i] != (uint8_t)c) { return 0; } } return 1; } /* 在已上线字节里找一段（tx 是二进制缓冲，不依赖 NUL 结尾） */ static int tx_contains(const char *needle) { size_t nl = strlen(needle); uint32_t i; if ((size_t)con_uart_tx_n < nl) { return 0; } for (i = 0U; (size_t)i + nl <= (size_t)con_uart_tx_n; i++) { if (memcmp(&con_uart_tx[i], needle, nl) == 0) { return 1; } } return 0; } static uint32_t tx_count(const char *needle) { size_t nl = strlen(needle); uint32_t i; uint32_t hits = 0U; if ((size_t)con_uart_tx_n < nl) { return 0U; } for (i = 0U; (size_t)i + nl <= (size_t)con_uart_tx_n; i++) { if (memcmp(&con_uart_tx[i], needle, nl) == 0) { hits++; } } return hits; } /* 写者任务上下文里排空（生产契约：drain 只允许写者任务调） */ static void writer_drain(void) { con_task_self = (TaskHandle_t)&s_task_writer; con_ring_draining++; /* 此刻读环的是写者，不计入生产者违规 */ dbg_console_drain(); con_ring_draining--; con_task_self = (TaskHandle_t)&s_task_other; } /* 后台排空（不改当前任务句柄）：模拟"生产者等一轮，写者腾出了空间" */ static void bg_drain_hook(void) { con_ring_draining++; dbg_console_drain(); con_ring_draining--; } /* 把环填到只剩 want_free 字节可用：走真实入环路径（顺带踩到回绕）。 * 填充期间把 DWT 上界调大——万一算差一位也不会卡在等待里出不来。 */ static void fill_ring(uint32_t want_free) { char pad[DBG_CON_LINE_MAX]; uint32_t i; memset(pad, 'Z', sizeof(pad)); con_dwt_step = SystemCoreClock / 4U; for (i = 0U; i < 40U; i++) { uint32_t free_space = (uint32_t)((DBG_CON_RING_SIZE - 1U) - used_now()); uint32_t n; if (free_space <= want_free) { break; } n = free_space - want_free; if (n > DBG_CON_LINE_MAX) { n = DBG_CON_LINE_MAX; } if (dbg_console_write_line(pad, n) != (int)n) { break; } } con_dwt_step = 0U; s_con_drop = 0U; /* 填充过程中的边角丢弃不算场景断言 */ } /* 注册写者（defaultTask），随后把"当前任务"换回别的任务 */ static void attach_writer(void) { con_task_self = (TaskHandle_t)&s_task_writer; dbg_console_writer_attach(); con_task_self = (TaskHandle_t)&s_task_other; } /* ============ TC-CONLOG-000..006 参数校验与截断 ============ */ static void tc_params(void) { char buf[DBG_CON_LINE_MAX + 128U]; printf("-- TC-CONLOG-000..006 argument checks and truncation --\n"); reset_all(); printf("(probe) this line goes through the host CRT\n"); fflush(stdout); CHECK(con_uart_tx_n == 0U && used_now() == 0U, "TC-CONLOG-000 host printf does not pass through this module fputc (else test output would be swallowed into the ring)"); reset_all(); con_uart_txe_stuck = 1; /* 通道卡死：任何字节都不该上线 */ CHECK(dbg_console_write_line(0, 5U) == -1, "TC-CONLOG-001 write_line(NULL) returns -1"); CHECK(dbg_console_write_line("abc", 0U) == -1, "TC-CONLOG-002 write_line(len=0) returns -1"); dbg_console_write_raw(0, 5U); dbg_console_write_raw("abc", 0U); CHECK(con_uart_tx_n == 0U, "TC-CONLOG-003 both NULL and len=0 never touch the UART"); CHECK(dbg_console_dropped() == 0U, "TC-CONLOG-004 invalid arguments are not counted as drops"); reset_all(); memset(buf, 'A', sizeof(buf)); CHECK(dbg_console_write_line(buf, sizeof(buf)) == (int)DBG_CON_LINE_MAX, "TC-CONLOG-005 a line longer than DBG_CON_LINE_MAX is truncated to 192 (return value is the delivered byte count)"); CHECK(con_uart_tx_n == DBG_CON_LINE_MAX, "TC-CONLOG-006 after truncation exactly 192 bytes reach the wire"); } /* ============ TC-CONLOG-010..018 写者未注册 = 无锁直发 ============ */ static void tc_unattached(void) { char big[DBG_CON_CHUNK_MAX + 64U]; printf("-- TC-CONLOG-010..018 writer not attached: lock-free direct send --\n"); reset_all(); CHECK(dbg_console_writer_ready() == 0U, "TC-CONLOG-010 writer_ready() == 0 before attach"); CHECK(dbg_console_write_line("hello", 5U) == 5, "TC-CONLOG-011 before attach the whole line is sent directly, returning its length"); CHECK(tx_is(0U, "hello"), "TC-CONLOG-012 direct send reaches the wire verbatim (never went through the ring)"); CHECK(used_now() == 0U, "TC-CONLOG-013 direct send does not enter the ring (head == tail)"); CHECK(con_evt_sets == 0U, "TC-CONLOG-014 direct send does not set SYS_EVT_CONSOLE_TX (no writer to wake yet)"); /* ⚠ 本条判据在道G task-23（2026-10-26）**换了钉法**，这里留全过程：旧写法断言 * "裸发用 0 次临界区"，钉住的正是当时的**缺陷机理本身**（零互斥 => 多个任务可以 * 在同一行里互相插字节；台架 20261012_B6 的 "st[art:" 与本次 protectTask 未标定 * 行内多出 "[" "2" "0" 三字节都是它）。修复后裸发要取"整行所有权"，取与还各一次、 * 每次只有几条指令的 test-and-set，所以计数从 0 变 2。 * 换来两条更硬的判据（缺一条就该红），断言总数只增不减： * ① 每个上线字节都发生在临界区**之外**（con_uart_crit_at_tx_max == 0）——整行 * 独占绝不允许把 @115200 约 7.8 ms 的发送包进关中断区，那等于往启动窗口塞 * 7.8 ms 中断延迟与最坏喂狗抖动，比交错本身更糟（Lead 红线）； * ② 全程零次 vTaskDelay：拿不到所有权就当场让路，不排队（见 TC-CONLOG-170 族）。 * * ⚠ **第二次换钉**（道G task-26，2026-10-26）：上面那次只是把数字从 0 挪到 2， * 钉子仍然钉在**实现细节**（用的是哪一种关中断原语）而不是行为上。本笔把裸发与 * 入环路径的窗口从内核临界区换成 PRIMASK（原因与实测的"9 条任务链各 +80 B"写在 * App/log/console_log.c 的 CON_CRIT_ENTER 注释里：taskEXIT_CRITICAL ⇒ * vPortExitCritical ⇒ configASSERT ⇒ 断言钩子 ⇒ 回到本模块，armlink 把这条环算进 * 每一条含临界区的任务链）。判据随之搬成三条**等价且更强**的行为断言： * ① 窗口次数与嵌套深度不变（取 + 还各一次、深度 1）=> 独占语义一点没丢； * ② 整条裸发路径 **0 次内核临界区调用** => 这同时就是"那条 configASSERT 环不 * 成立"的机器证据，不靠任何人的口头保证； * ③ 上线字节看到的**两种**屏蔽深度水位都为 0 => "发送绝不包进关中断区"这条红线 * 换了原语之后照旧有牙。断言条数：本段由 2 条变 3 条，只增不减。 */ CHECK((con_pm_enter == 2U) && (con_pm_exit == 2U) && (con_pm_max_depth == 1U) && (con_crit_enter == 0U), "TC-CONLOG-015 direct send takes exactly two few-instruction PRIMASK windows (claim + return), never nests them, and calls the kernel critical API zero times (that is what keeps the configASSERT cycle out of every task's worst-case stack)"); /* ⚠ 编号**不退役**：015b 这个号生产注释（App/log/console_log.c 的 CON_CRIT_ENTER * 一处、Src/stm32f4xx_it.c 的 hard_fault_write 一处）与本文档都在引用，一旦把它换成 * 新号，那些引用立刻变成悬空号（今天已经被这类问题咬过两次）。所以这里保持 * 015b = "上线字节的屏蔽水位恒 0"这条红线（换了原语，语义照旧），新加的"绝不等待" * 另起 015c。 */ CHECK((con_uart_crit_at_tx_max == 0U) && (con_pm_at_tx_max == 0U), "TC-CONLOG-015b every byte reaches the wire with interrupts enabled under BOTH masking primitives (the ~7.8 ms transmit is never inside a critical window)"); CHECK(con_delay_calls == 0U, "TC-CONLOG-015c whole-line ownership never waits: contention yields on the spot instead of queueing"); reset_all(); memset(big, 'B', sizeof(big)); dbg_console_write_raw(big, sizeof(big)); CHECK(con_uart_tx_n == DBG_CON_CHUNK_MAX, "TC-CONLOG-016 write_raw is bounded: only 256 bytes are sent"); reset_all(); con_uart_txe_after = 3; /* 前 3 次不就绪（TXE 抖动，未超上界） */ CHECK(dbg_console_write_line("CD", 2U) == 2, "TC-CONLOG-017 after TXE jitter the whole line still goes out"); CHECK(tx_is(0U, "CD") && con_delay_calls == 0U, "TC-CONLOG-018 direct send neither waits on tick nor enters the ring (premise for ISR and crash hooks)"); } /* ============ TC-CONLOG-020..037 注册后走环形缓冲 ============ */ static void tc_ring(void) { char line[DBG_CON_LINE_MAX]; static char oversize[3000]; /* 超长入环的源（>= 钳位后的 2048B） */ uint32_t i; printf("-- TC-CONLOG-020..027 after attach: producers enter the ring, writer sends --\n"); reset_all(); attach_writer(); CHECK(dbg_console_writer_ready() == 1U, "TC-CONLOG-020 writer_ready() == 1 after attach"); CHECK(s_con_writer_task == (TaskHandle_t)&s_task_writer, "TC-CONLOG-021 attach records exactly the caller task handle (basis of the self-wait guard)"); CHECK(dbg_console_write_line("netTask up\r\n", 12U) == 12, "TC-CONLOG-022 a successful ring entry returns the line length"); CHECK(con_uart_tx_n == 0U, "TC-CONLOG-023 producers never touch the UART"); CHECK(used_now() == 12U, "TC-CONLOG-024 the whole line enters the ring at once (used = 12)"); CHECK(con_evt_sets == 1U && con_evt_flags == SYS_EVT_CONSOLE_TX, "TC-CONLOG-025 after entering the ring the real event bit SYS_EVT_CONSOLE_TX (bit6) wakes the writer"); CHECK(con_pm_enter == 1U && con_pm_exit == 1U && con_pm_max_depth == 1U && con_crit_enter == 0U, "TC-CONLOG-026 one line takes exactly one PRIMASK window at depth one and no kernel critical section (implementation basis of line atomicity)"); writer_drain(); CHECK(tx_is(0U, "netTask up\r\n"), "TC-CONLOG-027 writer drain: wire bytes are byte-identical to what entered the ring"); printf("-- TC-CONLOG-028..032 256B chunking and no interleaving between producers --\n"); reset_all(); attach_writer(); memset(line, 'C', sizeof(line)); for (i = 0U; i < 5U; i++) { (void)dbg_console_write_line(line, sizeof(line)); } writer_drain(); CHECK(con_uart_block_n == 4U, "TC-CONLOG-028 960B is split into 4 blocks by DBG_CON_CHUNK_MAX"); CHECK(con_uart_block_len[0] == 256U && con_uart_block_len[1] == 256U && con_uart_block_len[2] == 256U && con_uart_block_len[3] == 192U, "TC-CONLOG-029 block sizes 256/256/256/192 (the single-send ceiling is really enforced)"); CHECK(con_uart_tx_n == 960U && con_uart_txe_reads == 960U, "TC-CONLOG-030 every byte is loaded into DR exactly once (write when ready, no resend)"); reset_all(); attach_writer(); con_task_self = (TaskHandle_t)&s_task_other; (void)dbg_console_write_line("[A] 11111\r\n", 11U); con_task_self = (TaskHandle_t)&s_task_writer; /* 写者自己也记一行 -> 先排空 */ (void)dbg_console_write_line("[B] 22222\r\n", 11U); con_task_self = (TaskHandle_t)0; /* 连"无句柄"也算一个生产者 */ (void)dbg_console_write_line("[C] 33333\r\n", 11U); writer_drain(); CHECK(tx_is(0U, "[A] 11111\r\n[B] 22222\r\n[C] 33333\r\n"), "TC-CONLOG-031 three producers, one line each -> the wire still shows three intact lines (G1 line atomicity)"); CHECK(strstr((const char *)&con_uart_tx[5], "[B] 22222") != 0, "TC-CONLOG-032 no line boundary was broken (no line spliced into another)"); printf("-- TC-CONLOG-033..037 ring wrap: two-segment copy + chunking by contiguous run --\n"); reset_all(); attach_writer(); s_con_head = 4090U; s_con_tail = 4090U; (void)dbg_console_write_line("0123456789ABCDEF", 16U); CHECK(s_con_head == 10U && used_now() == 16U, "TC-CONLOG-033 a wrapped line leaves head at 10 (4090+16-4096)"); CHECK(memcmp(&con_ring_store[4090], "012345", 6) == 0 && con_ring_store[0] == (uint8_t)'6' && con_ring_store[9] == (uint8_t)'F' && con_ring_store[10] == 0U, "TC-CONLOG-034 both wrap segments land correctly (first 6B fill to the ring end, remaining 10B start at 0)"); writer_drain(); CHECK(con_uart_block_n == 2U && con_uart_block_len[0] == 6U && con_uart_block_len[1] == 10U, "TC-CONLOG-035 drain chunks by contiguous run: 6 + 10 (never reads past the ring end)"); CHECK(tx_is(0U, "0123456789ABCDEF"), "TC-CONLOG-036 the wrapped line reaches the wire with correct content and order"); reset_all(); attach_writer(); /* 源缓冲必须给到 3000B：con_append 只钳长度，不会钳读取范围， * 拿 192B 的栈数组当 2048B 源就是越界读（插桩跑直接 0xC0000005） */ memset(oversize, 'D', sizeof(oversize)); CHECK(con_append(oversize, (uint16_t)3000U) == 0, "TC-CONLOG-037 calling con_append directly with an over-long buffer still succeeds"); CHECK(used_now() == (DBG_CON_RING_SIZE / 2U), "TC-CONLOG-038 ring entry length is clamped to RING/2=2048 (so any line can always eventually enter)"); } /* ============ TC-CONLOG-040..042 写者自记录 / 重入 / 未注册 drain ============ */ static void tc_writer_self(void) { char line[DBG_CON_LINE_MAX]; uint32_t i; printf("-- TC-CONLOG-040..042 writer self-logging drains first / drain re-entry guard --\n"); reset_all(); attach_writer(); memset(line, 'E', sizeof(line)); for (i = 0U; i < 21U; i++) { /* 21*192 = 4032，只剩 63B 可用 */ (void)dbg_console_write_line(line, sizeof(line)); } con_task_self = (TaskHandle_t)&s_task_writer; /* 写者自己记一行 */ CHECK(dbg_console_write_line("F", 1U) == 1, "TC-CONLOG-040 a writer logging about itself loses no line"); CHECK(con_delay_calls == 0U, "TC-CONLOG-041 writer self-logging drains before entering: it never waits (waiting for itself would deadlock)"); CHECK(con_uart_tx_n == 4032U && used_now() == 1U && dbg_console_dropped() == 0U, "TC-CONLOG-042 old lines all reach the wire, the new line enters the ring, zero drops"); reset_all(); attach_writer(); (void)dbg_console_write_line("hold", 4U); s_con_draining = 1U; /* 模拟正处于 drain 之内 */ writer_drain(); CHECK(con_uart_tx_n == 0U && used_now() == 4U, "TC-CONLOG-043 drain re-entry guard: a nested call yields at once (writer self-logging causes no recursive drain)"); reset_all(); (void)dbg_console_write_line("early\r\n", 7U); /* 未注册 -> 已直发 */ con_uart_tx_n = 0U; writer_drain(); CHECK(con_uart_tx_n == 0U, "TC-CONLOG-044 with no writer attached drain does nothing"); } /* ============ TC-CONLOG-050..062 缓冲满 / 丢弃 / 可观测 ============ */ static void tc_full_drop(void) { printf("-- TC-CONLOG-050..053 ring full: DWT hard ceiling drops without overwriting old lines --\n"); reset_all(); attach_writer(); fill_ring(10U); /* 只剩 10B 可用 */ con_dwt_step = SystemCoreClock / 4U; /* 一次判据 = 250ms > 200ms 上界 */ CHECK(dbg_console_write_line("0123456789ABCDEFGHIJ", 20U) == -1, "TC-CONLOG-050 ring full + DWT ceiling reached -> this line is dropped (returns -1)"); CHECK(dbg_console_dropped() == 1U, "TC-CONLOG-051 drop counter +1"); CHECK(con_delay_calls == 0U, "TC-CONLOG-052 with DWT the cycle criterion is used, no need to burn 200 ticks first (K4)"); CHECK(s_con_head == 4085U && used_now() == 4085U && con_uart_tx_n == 0U, "TC-CONLOG-053 a drop does not advance head and the producer does not send itself (no half write, no overwrite of pending lines)"); printf("-- TC-CONLOG-054..056 space appears while waiting -> line enters the ring --\n"); reset_all(); attach_writer(); fill_ring(10U); con_dwt_step = 0U; /* 时间静止：只能靠写者腾地方 */ con_delay_hook = bg_drain_hook; /* 每等一轮 = 写者排空一次 */ CHECK(dbg_console_write_line("0123456789ABCDEFGHIJ", 20U) == 20, "TC-CONLOG-054 after one wait round space frees up -> the whole line enters the ring"); CHECK(con_delay_calls == 1U && dbg_console_dropped() == 0U, "TC-CONLOG-055 only one wait round happened and it is not counted as a drop"); con_delay_hook = 0; CHECK(con_uart_tx_n == 4085U, "TC-CONLOG-056 it really was the writer that freed the space (old lines reached the wire)"); printf("-- TC-CONLOG-057..059 no-DWT branch: wait ceiling = DBG_CON_WAIT_MS ticks --\n"); reset_all(); con_dwt_ctrl_sticky = 0; /* 调试单元被关 -> DWT 使能失败 */ attach_writer(); fill_ring(10U); CHECK(s_con_dwt_up == 0U, "TC-CONLOG-057 s_con_dwt_up stays 0 when DWT enable fails"); CHECK(dbg_console_write_line("0123456789ABCDEFGHIJ", 20U) == -1, "TC-CONLOG-058 without DWT a drop still happens (criterion falls back to tick counting, never waits forever)"); CHECK(con_delay_calls == DBG_CON_WAIT_MS && dbg_console_dropped() == 1U, "TC-CONLOG-059 the no-DWT wait ceiling is exactly DBG_CON_WAIT_MS(200) vTaskDelay calls"); printf("-- TC-CONLOG-060..062 drop observability: the [ERR] line is sent raw, not through the ring --\n"); reset_all(); attach_writer(); fill_ring(10U); con_dwt_step = SystemCoreClock / 4U; (void)dbg_console_write_line("0123456789ABCDEFGHIJ", 20U); /* 丢 1 行 */ con_dwt_step = 0U; writer_drain(); CHECK(tx_contains("[ERR] CONSOLE dropped 1 lines"), "TC-CONLOG-060 the drain tail flushes [ERR] CONSOLE dropped 1 lines (loss is never silent, serial-boot-test marks FAIL)"); CHECK(dbg_console_dropped() == 0U, "TC-CONLOG-061 the counter is cleared once flushed (next round does not repeat the warning)"); CHECK(used_now() == 0U, "TC-CONLOG-062 the warning goes out raw: not through the ring -> no con_append->drain recursion"); } /* ============ TC-CONLOG-070..081 TX 僵尸通道：自愈 / 冷却 / 半块 ============ */ /* 公共前置：注册写者 + 把环填满 + 让通道卡死 */ static void fault_setup(uint32_t tick0, int repair) { attach_writer(); fill_ring(0U); con_tick_now = tick0; con_uart_txe_stuck = 1; con_dwt_step = SystemCoreClock / 4U; /* 一次判据就跨过 CON_TX_TIMEOUT_CYC */ s_mx_repair = repair; writer_drain(); } static void tc_tx_fault(void) { printf("-- TC-CONLOG-070..074 soft reset did not heal: stop at the fault + trace only via flag --\n"); reset_all(); fault_setup(5000U, 0); CHECK(dbg_console_tx_fault() == 1U, "TC-CONLOG-070 send timeout -> tx_fault counter +1"); CHECK(s_mx_init_calls == 1U && con_nvic_clears == 1U && con_rcc_disables == 1U && con_rcc_enables == 1U, "TC-CONLOG-071 full self-heal sequence: clear pending -> gate off clock -> gate on clock -> re-init"); CHECK(used_now() == (DBG_CON_RING_SIZE - 1U) - DBG_CON_CHUNK_MAX, "TC-CONLOG-072 stop at the fault: only the current 256B block is lost, the rest waits in the ring (yields to the watchdog)"); CHECK(con_uart_tx_n == 0U, "TC-CONLOG-073 while the channel is unhealed even that WARN cannot get out (raw send is bounded too, no retry)"); CHECK(dbg_console_tx_fault_log_take() == 1U && dbg_console_tx_fault_log_take() == 0U, "TC-CONLOG-074 the trace flag is read-then-clear: the writer uses it to append run.log outside drain (breaks the call graph cycle)"); printf("-- TC-CONLOG-075..077 soft reset healed: the WARN goes out exactly once --\n"); reset_all(); con_tick_now = 7000U; attach_writer(); (void)dbg_console_write_line("X", 1U); con_uart_txe_ready_left = 0; /* 一装载就卡死 */ con_dwt_step = SystemCoreClock / 4U; s_mx_repair = 1; /* 重初始化把通道治好 */ writer_drain(); CHECK(tx_contains("[WARN] CONSOLE tx fault"), "TC-CONLOG-075 the first fault WARN line reaches the wire"); CHECK(used_now() == 0U && s_con_cool_until == 7000U && dbg_console_tx_fault() == 1U, "TC-CONLOG-076 the faulted block is dropped (already out of the ring, not replayable) + cooldown deadline is the tick then"); con_uart_txe_ready_left = -1; con_dwt_step = 0U; writer_drain(); /* tick 未推进 -> 仍在冷却 */ CHECK(s_con_cool_until == 7000U && s_mx_init_calls == 1U, "TC-CONLOG-077 during cooldown drain yields at once: no retry, no second self-heal"); } static void tc_tx_cool(void) { printf("-- TC-CONLOG-078..084 + 107..108 cooldown both ends / tick==0 / wrap --\n"); reset_all(); fault_setup(7000U, 1); /* 治好的那次故障 */ CHECK(s_con_cool_until == 7000U && used_now() == 3839U, "TC-CONLOG-078 3839B remain in the ring after the fault (this block was dropped)"); con_dwt_step = 0U; con_uart_txe_stuck = 0; con_tick_now = 7299U; /* 差 1ms */ writer_drain(); CHECK(s_con_cool_until == 7000U && used_now() == 3839U && s_mx_init_calls == 1U, "TC-CONLOG-079 1ms short of the deadline: the ring does not move and no repeated self-heal (cooldown is the pacing guard)"); con_tick_now = 7300U; /* 到点 */ writer_drain(); CHECK(s_con_cooling == 0U && used_now() == 0U && dbg_console_tx_fault() == 1U, "TC-CONLOG-080 at the deadline the flag clears, this round drains, and no new fault appears" " (cool_until only stores a deadline and is no longer used as a clear-on-zero sentinel)"); /* 修复后的正向断言：冷却与否看独立标志，不再拿 tick 值当哨兵 */ reset_all(); fault_setup(0U, 0); /* 故障恰好落在 HAL_GetTick()==0 那一拍 */ CHECK(s_con_cooling == 1U && dbg_console_tx_fault() == 1U, "TC-CONLOG-081 a fault in the tick==0 round still enters cooldown (own flag, no zero sentinel collision)"); writer_drain(); /* tick 仍是 0 */ CHECK(dbg_console_tx_fault() == 1U && s_mx_init_calls == 1U && used_now() == (DBG_CON_RING_SIZE - 1U) - DBG_CON_CHUNK_MAX, "TC-CONLOG-082 another round on the same tick is blocked by cooldown: no second wasted block timeout"); con_tick_now = DBG_CON_FAULT_COOL_MS - 1U; writer_drain(); CHECK(dbg_console_tx_fault() == 1U, "TC-CONLOG-083 299ms is still inside the cooldown"); con_uart_txe_stuck = 0; con_tick_now = DBG_CON_FAULT_COOL_MS; /* 到点（且回绕起点正好是 0） */ writer_drain(); CHECK(s_con_cooling == 0U && used_now() == 0U && dbg_console_tx_fault() == 1U, "TC-CONLOG-084 after the deadline the cooldown clears and passes through: no second fault anywhere"); reset_all(); attach_writer(); fill_ring(0U); s_con_cooling = 1U; /* 在不在冷却只由这个标志说 */ s_con_cool_until = 0xFFFFFFFFU; /* 截止时刻记在回绕点前 */ con_tick_now = 100U; /* 现在刚回绕到 100 */ writer_drain(); CHECK(s_con_cooling == 1U && used_now() == 4095U, "TC-CONLOG-107 wrap-around deadline still cools (unsigned delta 101 < 300)"); con_tick_now = 401U; /* 无符号差值 402 >= 300 */ writer_drain(); CHECK(s_con_cooling == 0U && used_now() == 0U, "TC-CONLOG-108 past the wrapped deadline the flag clears and the ring empties"); } static void tc_tx_half(void) { printf("-- TC-CONLOG-085..088 real consequences of the timeout criterion: half block / already sent yet failed --\n"); reset_all(); attach_writer(); (void)dbg_console_write_line("ABCDEFGH", 8U); con_uart_tc_stuck = 1; /* 字节都进了 DR，只有 TC 不置位 */ con_dwt_step = SystemCoreClock / 4U; writer_drain(); CHECK(tx_is(0U, "ABCDEFGH"), "TC-CONLOG-085 TC stuck: all 8 bytes were handed to the shifter"); CHECK(dbg_console_tx_fault() == 1U && con_uart_block_n == 0U, "TC-CONLOG-086 already on the wire but the whole block still counts as failed (docs section 13-O2: drop and fault books were not separated)"); reset_all(); attach_writer(); (void)dbg_console_write_line("ABCDEFGH", 8U); con_uart_txe_ready_left = 3; /* 只挤得出 3 个字节 */ con_dwt_step = SystemCoreClock / 4U; writer_drain(); CHECK(tx_is(0U, "ABC"), "TC-CONLOG-087 TXE stuck mid-block -> only the 3 bytes already written to DR reach the wire"); CHECK(dbg_console_tx_fault() == 1U && used_now() == 0U, "TC-CONLOG-088 a half block takes the same self-heal branch and leaves the ring (trailing 5 bytes die with the block)"); } /* ============ TC-CONLOG-090..099 DWT 使能 / 指令计数上界 ============ */ static void tc_dwt(void) { printf("-- TC-CONLOG-090..093 lazy DWT enable and skip-when-ready --\n"); reset_all(); (void)dbg_console_write_line("ok\r\n", 4U); /* 走一次直发 -> 顺带使能 DWT */ CHECK(s_con_dwt_up == 1U, "TC-CONLOG-090 con_dwt_ensure sets s_con_dwt_up after a successful enable"); CHECK((g_con_core_debug.DEMCR & CoreDebug_DEMCR_TRCENA_Msk) != 0U, "TC-CONLOG-091 DEMCR.TRCENA really gets written (bit number matches core_cm4.h)"); CHECK((g_con_dwt.CTRL & DWT_CTRL_CYCCNTENA_Msk) != 0U, "TC-CONLOG-092 DWT.CTRL.CYCCNTENA really gets written"); CHECK(tx_is(0U, "ok\r\n") && con_dwt_reads == 4U, "TC-CONLOG-093 with the channel ready the send loop reads no further CYCCNT (3 from ensure + 1 for t0)"); printf("-- TC-CONLOG-094..097 DWT enable failure -> con_tx_counted instruction ceiling --\n"); reset_all(); con_dwt_ctrl_sticky = 0; /* CYCCNTENA 写不进去 */ con_uart_txe_stuck = 1; dbg_console_write_raw("Q", 1U); CHECK(s_con_dwt_up == 0U, "TC-CONLOG-094 DWT enable failure -> the counted-guard branch is taken"); CHECK(con_uart_txe_reads == CON_TX_GUARD_MAX, "TC-CONLOG-095 each byte spins at most CON_TX_GUARD_MAX(20000) times then gives up (bounded, not a dead wait)"); CHECK(con_uart_tx_n == 0U, "TC-CONLOG-096 if the block is not out within the counted ceiling the whole block is abandoned"); CHECK(con_dwt_reads == 3U, "TC-CONLOG-097 the counted branch never reads CYCCNT (independent of DWT, hence of any time source)"); printf("-- TC-CONLOG-098..099 the timeout criterion does not use HAL_GetTick --\n"); reset_all(); con_uart_txe_stuck = 1; /* tick 冻结在 0，模拟 TIM7 停摆 */ con_dwt_step = SystemCoreClock / 10U; /* 一次判据正好 = 100ms 上界 */ dbg_console_write_raw("Q", 1U); CHECK(con_tick_reads == 0U && con_uart_tx_n == 0U, "TC-CONLOG-098 it exits even when tick never advances: one raw send reads HAL_GetTick zero times"); reset_all(); con_uart_txe_stuck = 1; con_dwt_step = SystemCoreClock / 4U; dbg_console_write_raw("Z", 1U); CHECK(con_uart_txe_reads == 1U, "TC-CONLOG-099 the DWT branch declares timeout on the first spin (the ceiling really works, never burns 20000)"); } /* ============ TC-CONLOG-100..106 huart5.Instance == NULL 短路 + 未初始化分诊 ============ */ static void tc_null_uart(void) { printf("-- TC-CONLOG-100..106 UART5 not initialised: yield, never reinit, keep proof --\n"); reset_all(); huart5.Instance = 0; dbg_console_write_raw("boom", 5U); CHECK(con_uart_tx_n == 0U && con_uart_txe_reads == 0U, "TC-CONLOG-100 with Instance==NULL not one register is touched (no dereference of address 0)"); CHECK(con_dwt_reads == 3U, "TC-CONLOG-101 DWT is still lazily enabled before the short circuit (ensure stays ahead of the NULL check)"); reset_all(); huart5.Instance = 0; CHECK(dbg_console_write_line("early", 5U) == 5, "TC-CONLOG-102 the unattached path (pre-kernel) survives a missing UART and still returns the line length"); /* 修复后的正向断言：未初始化 != 僵尸通道，绝不重配外设 */ reset_all(); attach_writer(); (void)dbg_console_write_line("abc", 3U); huart5.Instance = 0; /* 写者起来了但串口还没初始化 */ s_mx_repair = 1; writer_drain(); CHECK(s_mx_init_calls == 0U && con_rcc_disables == 0U && con_nvic_clears == 0U, "TC-CONLOG-103 Instance==NULL never triggers a peripheral soft reset (no RCC/GPIO reconfig before HAL is ready)"); CHECK(dbg_console_tx_fault() == 0U && s_con_cooling == 0U, "TC-CONLOG-104 not treated as a zombie channel: tx_fault and cooldown stay untouched"); CHECK(dbg_console_dropped() == 1U && used_now() == 0U, "TC-CONLOG-105 the block that left the ring but never hit the wire counts as dropped"); huart5.Instance = &g_con_uart; /* 串口随后初始化好 */ con_uart_tx_n = 0U; writer_drain(); CHECK(tx_contains("[ERR] CONSOLE dropped 1 lines") && dbg_console_dropped() == 0U, "TC-CONLOG-106 drop evidence survives the outage and is flushed once the UART is back"); } /* ============ TC-CONLOG-110..115 fputc 重定向 ============ */ static void tc_fputc(void) { printf("-- TC-CONLOG-110..115 fputc retarget (legacy printf path) --\n"); reset_all(); CHECK(con_fputc_under_test('Q', stdout) == 'Q', "TC-CONLOG-110 fputc returns the character unchanged (C library convention)"); CHECK(tx_is(0U, "Q") && used_now() == 0U, "TC-CONLOG-111 writer not attached: printf bytes go out directly (same as the old behaviour)"); reset_all(); attach_writer(); (void)con_fputc_under_test('R', stdout); CHECK(con_uart_tx_n == 0U && used_now() == 1U && con_ring_store[0] == (uint8_t)'R', "TC-CONLOG-112 after attach fputc also funnels into the single-writer path (byte by byte into the ring)"); writer_drain(); CHECK(tx_is(0U, "R"), "TC-CONLOG-113 the writer sends those printf bytes"); reset_all(); attach_writer(); con_ipsr = 12U; /* 假异常号：任意非 0 */ CHECK(dbg_console_write_line("ISR", 3U) == 3, "TC-CONLOG-114 writing a whole line from interrupt context returns the line length"); CHECK(tx_is(0U, "ISR") && used_now() == 0U && con_delay_calls == 0U, "TC-CONLOG-115 interrupt context always sends raw: no ring entry, no waiting (else it sleeps inside the ISR)"); reset_all(); attach_writer(); fill_ring(0U); /* 环全满 */ con_ipsr = 5U; con_dwt_step = SystemCoreClock / 4U; CHECK(dbg_console_write_line("0123456789", 10U) == 10, "TC-CONLOG-116 ring completely full + interrupt context: still sends directly (an ISR never enters the drop wait)"); CHECK(dbg_console_dropped() == 0U && con_delay_calls == 0U, "TC-CONLOG-117 this path loses no line and records no drop (K1: pre-kernel and ISR depend on no kernel object)"); } /* ============ TC-CONLOG-120..122 drain 250ms 预算 ============ */ static void tc_budget(void) { printf("-- TC-CONLOG-120..122 single drain budget 250ms (yields to the watchdog poll) --\n"); reset_all(); attach_writer(); fill_ring(0U); /* 4095B = 16 块 */ con_tick_step = 130U; /* 每次读 tick 走 130ms */ writer_drain(); CHECK(con_uart_block_n == 2U, "TC-CONLOG-120 one round sends only 2 blocks then yields on budget (not because it finished)"); CHECK(used_now() == (DBG_CON_RING_SIZE - 1U) - (2U * DBG_CON_CHUNK_MAX), "TC-CONLOG-121 when it yields, 3583B remain in the ring (next round continues, nothing lost)"); con_tick_step = 0U; writer_drain(); /* 预算内发完余下 3583B */ CHECK(used_now() == 0U && con_uart_tx_n == (DBG_CON_RING_SIZE - 1U), "TC-CONLOG-122 the next round sends the remaining 3583B too: yielding on budget loses no bytes (4095 total)"); } /* ============ TC-CONLOG-130..135 计数支路的成功路径 / TC 抖动 / 直调 NULL ============ */ static void tc_counted_paths(void) { printf("-- TC-CONLOG-130..132 DWT unavailable -> con_tx_counted can also finish a block (not only time out) --\n"); reset_all(); con_dwt_ctrl_sticky = 0; /* CYCCNTENA 落不住 */ con_tick_now = 9000U; /* tick 冻结：证明与本支路无关 */ dbg_console_write_raw("AB", 2U); CHECK(s_con_dwt_up == 0U && tx_is(0U, "AB"), "TC-CONLOG-130 the counted branch sends the whole block and returns success (fallback path did not regress)"); CHECK(con_uart_tc_reads == 1U && con_dwt_reads == 3U && con_tick_reads == 0U, "TC-CONLOG-131 the counted branch waits no tick and reads no CYCCNT (zero external time source)"); reset_all(); con_dwt_ctrl_sticky = 0; con_uart_tc_stuck = 1; /* 字节能进 DR，TC 永不置位 */ dbg_console_write_raw("CD", 2U); CHECK(tx_is(0U, "CD") && con_uart_tc_reads == CON_TX_GUARD_MAX, "TC-CONLOG-132 with TC stuck the counted branch also gives up after at most CON_TX_GUARD_MAX spins"); printf("-- TC-CONLOG-133..135 DWT branch TC jitter / con_append direct-call argument checks --\n"); reset_all(); con_dwt_step = 1U; /* 时间走得极慢：不会误判超时 */ con_uart_tc_after = 2; /* 前两轮 TC 不就绪 */ dbg_console_write_raw("EF", 2U); CHECK(tx_is(0U, "EF") && con_uart_tc_reads == 3U, "TC-CONLOG-133 TC jitter (below the ceiling) still ends as a successful block: the TC loop exits normally"); reset_all(); CHECK(con_append(0, 3U) == -1, "TC-CONLOG-134 con_append(NULL) must block it itself (not only relying on the caller)"); CHECK(con_append("abc", 0U) == -1, "TC-CONLOG-135 con_append(len=0) is rejected the same way"); } /* ============ TC-CONLOG-140..150 三本账分开（docs §13-O2） ============ */ static void tc_three_ledgers(void) { uint32_t f0; uint32_t v0; printf("-- TC-CONLOG-140..150 dropped / tx_fault / tx_timeout: three separate books --\n"); /* TC 卡死：8 个字节都交给了发送器 -> 只涨超时账 + 自愈账，丢弃账不动 */ reset_all(); attach_writer(); (void)dbg_console_write_line("ABCDEFGH", 8U); con_uart_tc_stuck = 1; con_dwt_step = SystemCoreClock / 4U; writer_drain(); CHECK(dbg_console_tx_timeout() == 1U, "TC-CONLOG-140 TC timeout is booked on the new timeout ledger"); CHECK(dbg_console_dropped() == 1U && dbg_console_tx_fault() == 1U, "TC-CONLOG-141 timed-out block is no longer silently swallowed: dropped and self-heal each move by one"); /* 缓冲满丢行：只算丢弃，与 UART 无关 */ reset_all(); attach_writer(); fill_ring(10U); con_dwt_step = SystemCoreClock / 4U; (void)dbg_console_write_line("0123456789ABCDEFGHIJ", 20U); CHECK(dbg_console_dropped() == 1U && dbg_console_tx_timeout() == 0U && dbg_console_tx_fault() == 0U, "TC-CONLOG-142 buffer-full drop touches only the dropped ledger (no UART involved)"); /* 口径：只有写者排空看到的块才进超时账；裸发路径（内核前 / ISR / 告警行） * 没有"块"的概念，它的超时不混进来（否则运维读数失去意义）。 * 两条硬上界（DWT 与指令计数）都算，这一点用同一断言在两处覆盖。 */ reset_all(); con_dwt_ctrl_sticky = 0; con_uart_txe_stuck = 1; dbg_console_write_raw("Q", 1U); CHECK(dbg_console_tx_timeout() == 0U, "TC-CONLOG-143 raw-path timeout stays out of the block-timeout ledger (documented scope)"); reset_all(); attach_writer(); con_dwt_ctrl_sticky = 0; /* DWT 用不了 -> 计数上界支路 */ con_uart_txe_stuck = 1; (void)dbg_console_write_line("Q", 1U); writer_drain(); CHECK(dbg_console_tx_timeout() == 1U, "TC-CONLOG-150 the counted-guard upper bound is booked on the same ledger as the DWT one"); /* 通道不可用：既不是超时也不是自愈，只算丢弃（分诊与分账的交点） */ reset_all(); attach_writer(); (void)dbg_console_write_line("xyz", 3U); huart5.Instance = 0; writer_drain(); CHECK(dbg_console_dropped() == 1U && dbg_console_tx_timeout() == 0U && dbg_console_tx_fault() == 0U, "TC-CONLOG-144 dead channel (not initialised): only the dropped ledger moves"); /* 145：两轮都坏 -> 超时账与自愈账各自累计（互不吞并） */ reset_all(); attach_writer(); fill_ring(0U); s_con_tx_fault = 1U; /* 预置：让首轮那条 WARN 留痕不发， * 否则通道没治好时它自己也吃一次超时 */ con_uart_txe_stuck = 1; con_dwt_step = SystemCoreClock / 4U; s_mx_repair = 0; f0 = dbg_console_tx_fault(); v0 = dbg_console_tx_timeout(); writer_drain(); con_tick_now = 400U; /* 出冷却，再来一轮 */ writer_drain(); CHECK((dbg_console_tx_timeout() - v0) == 2U, "TC-CONLOG-145 timeout ledger grows once per timed-out block across rounds"); CHECK((dbg_console_tx_fault() - f0) == 2U, "TC-CONLOG-146 self-heal ledger grows on its own, independent of the timeout ledger"); CHECK(dbg_console_tx_timeout() == dbg_console_tx_timeout(), "TC-CONLOG-147 the timeout getter is a pure read (no clear-on-read semantics)"); /* 148/149：通道不可用期间 [ERR] 告警不能蒸发（丢的证据必须留得住） */ reset_all(); attach_writer(); fill_ring(10U); con_dwt_step = SystemCoreClock / 4U; (void)dbg_console_write_line("0123456789ABCDEFGHIJ", 20U); /* 缓冲满丢 1 行 */ con_dwt_step = 0U; huart5.Instance = 0; /* 告警那一发也发不出去 */ writer_drain(); CHECK(dbg_console_dropped() >= 1U, "TC-CONLOG-148 drop count survives while the channel is unavailable (evidence no longer washed away)"); huart5.Instance = &g_con_uart; con_uart_tx_n = 0U; writer_drain(); CHECK(tx_contains("[ERR] CONSOLE dropped") && dbg_console_dropped() == 0U, "TC-CONLOG-149 once the UART is back the pending drop count is reported and then cleared"); } /* ============ TC-CONLOG-160..165 check-then-act 的结构性钉法（环空位竞态） ========= */ static char s_inject_buf[64]; static uint32_t s_inject_left; static uint32_t s_inject_hits; /* 第二个生产者：被塞进"第一个生产者的临界区"里执行。旧写法里判据在区外， * 第一个生产者复核时看不到这次写入 -> head 合计越过容量；新写法复核在区内， * 一定看得到 -> 第一个生产者改为等待/丢弃，绝不覆盖未发出的旧行。 */ static void crit_second_producer(void) { if (s_inject_left == 0U) { return; } s_inject_left--; s_inject_hits++; (void)con_append(s_inject_buf, 60U); } static void tc_check_then_act(void) { char first[64]; uint32_t used_after; int rc; printf("-- TC-CONLOG-160..165 re-check must stay inside the critical section --\n"); reset_all(); attach_writer(); fill_ring(100U); /* 只剩 100B 可用：两个 60B 塞不下 */ memset(first, 'X', sizeof(first)); memset(s_inject_buf, 'Y', sizeof(s_inject_buf)); s_inject_left = 1U; s_inject_hits = 0U; con_ring_probe_hits = 0U; con_ring_zero_depth_hits = 0U; con_ring_probe_on = 1; /* 探针只在本次调用期间计数 */ con_pm_hook = crit_second_producer; /* 窗口换 PRIMASK 之后注入点跟着搬 */ con_dwt_step = SystemCoreClock / 4U; /* 复核不过就直接判上界，不空等 */ rc = dbg_console_write_line(first, 60U); con_pm_hook = 0; con_ring_probe_on = 0; con_dwt_step = 0U; used_after = used_now(); CHECK(s_inject_hits == 1U && con_pm_max_depth == 2U, "TC-CONLOG-160 the second producer ran with the region already held (depth two nesting)"); CHECK(rc == -1 && dbg_console_dropped() == 1U, "TC-CONLOG-161 the first producer re-checked inside the region, found space gone and dropped instead of overwriting"); CHECK(used_after == (DBG_CON_RING_SIZE - 1U) - 40U, "TC-CONLOG-162 ring usage stayed within capacity: 3995B + one 60B line, not 4115B wrapped past the end"); writer_drain(); /* 末尾还会跟一条 [ERR] dropped */ CHECK(con_uart_tx_n >= used_after && tx_contains("[ERR] CONSOLE dropped 1"), "TC-CONLOG-163 everything that survived the race is delivered, plus the drop warning"); CHECK(tx_prefix_all('Z', (DBG_CON_RING_SIZE - 1U) - 100U) && tx_at_is('Y', (DBG_CON_RING_SIZE - 1U) - 100U, 60U), "TC-CONLOG-164 old 3995 bytes intact then the winner 60B line intact, loser absent (no silent overwrite)"); CHECK(!tx_contains("XXXXXX"), "TC-CONLOG-165 the dropped line never made it onto the wire half-written"); /* 环访问探针（把生产的 s_con_ring 名成 (*con_ring_cell())，每次碰环都进钩子， * 钩子本体见 stub 头注释）。167 是纯正控：证明探针真数到了逐字节访问、不是零命中 * 空转。166 的下界是正控、上界则是判据——旧写法里"复核"发生在区外，败者那一份 60B * 也会真写进环（合计约 120 次），所以本条在退回旧写法时同样会红。 */ /* 期望次数 = 胜者那一行的逐字节写入（60B）；败者复核失败后一个字节都没写， * 这正是"不覆盖未发出旧行"的直接体现，所以命中数恰好只有 60 多几次。 */ CHECK(con_ring_probe_hits >= 60U && con_ring_probe_hits < 120U, "TC-CONLOG-166 ring probe counted exactly the winner line byte writes (loser wrote nothing)"); CHECK(con_ring_zero_depth_hits == 0U, "TC-CONLOG-167 no producer-side ring access ever happened outside a critical section"); } /* ===================== M 整行所有权（道G task-23，O1 第二个实例） ===================== */ /* 装进"A 行发送中途"的第二个生产者：换任务句柄后再裸发一行，精确模拟真实抢占 * —— A（s_task_other）此刻持有整行所有权，B（s_task_writer）必须让路。 * 这是本套唯一能把"两个生产者并发时，写进 DR 的字节流里不得出现另一条行的字节" * 做成必然失败断言的把手：修复后是**非阻塞**设计，永远不会调 vTaskDelay，所以既有的 * con_delay_hook 在这条路径上根本不会被触发（拿它当注入点会静默地什么都测不到）。 * 台架一手证据：docs/测试说明/测试数据/boot_log_data/20261026_prod_console_interleave_evidence.txt * —— PROT 行内多出 [ 2 0 三字节，紧接其后的 NAND_FTL 行恰好缺这三个字节的行首。 */ /* 台架 16:37 那次被插字的原文行（证据文件同上： * docs/测试说明/测试数据/boot_log_data/ 那份 interleave 证据的 * OCCURRENCE 1 去掉三个外来字节之后的样子）。M 族拿它当"真实行长与真实前缀"的样本， * 免得用例自己造一个不像现场的理想行。 */ static const char s_prot_line[] = "[2026-10-26 16:37:07][PROT] uncalibrated -> protection blocked" " (UA/UN/IA VALID not all set)\r\n"; static void s_tx_second_writer(void) { con_task_self = (TaskHandle_t)&s_task_writer; dbg_console_write_raw("BBBBBB", 6U); con_task_self = (TaskHandle_t)&s_task_other; } static void tc_ownership(void) { char fill[DBG_CON_LINE_MAX]; uint32_t i; printf("-- TC-CONLOG-170 to TC-CONLOG-179 whole-line ownership (O1 instance 2, bench byte account) --\n"); /* 170 A 行发到第 4 个字节时被 B 抢占：A 逐字节完整，B 整行让路入环 */ reset_all(); con_uart_tx_hook_at = 4U; con_uart_tx_hook = s_tx_second_writer; dbg_console_write_raw("AAAAAAAA", 8U); CHECK(tx_is(0U, "AAAAAAAA") && (con_uart_tx_n == 8U), "TC-CONLOG-170 the line already on its way out stays byte-intact when a second producer preempts mid-line"); CHECK(used_now() == 6U, "TC-CONLOG-170b the preempted producer books its whole line into the ring instead of spraying bytes into another line"); CHECK((dbg_console_dropped() == 0U) && (con_delay_calls == 0U), "TC-CONLOG-170c yielding is neither a drop nor a wait (this is what the earlier whole-line-loss variant would have cost)"); /* 171 判据⑦：延后发出去的内容 = 当场直发本会产出的同一批字节（同时间戳/单前缀/单 CRLF） */ con_uart_tx_hook = 0; con_task_self = (TaskHandle_t)&s_task_writer; dbg_console_writer_attach(); writer_drain(); CHECK((con_uart_tx_n == 14U) && tx_is(8U, "BBBBBB") && (used_now() == 0U), "TC-CONLOG-171 the deferred line reaches the wire byte-identical to immediate sending (no second prefix, no re-stamped time, single CRLF)"); /* 172 抢不到所有权 + 环也放不下 -> 才计真丢弃（真溢出必须仍然看得见） */ reset_all(); (void)memset(fill, 0x58, sizeof(fill)); con_task_self = (TaskHandle_t)&s_task_writer; dbg_console_writer_attach(); con_task_self = (TaskHandle_t)&s_task_other; CHECK(dbg_console_tx_begin() == 1U, "TC-CONLOG-172 a task can take whole-line ownership while the wire is free"); con_task_self = (TaskHandle_t)&s_task_writer; for (i = 0U; i < 21U; i++) { (void)dbg_console_write_line(fill, sizeof(fill)); /* 21*192=4032，环可用 4095 -> 只剩 63 字节 */ } CHECK((used_now() == (21U * (uint32_t)DBG_CON_LINE_MAX)) && (con_uart_tx_n == 0U), "TC-CONLOG-172b the writer yields the whole round while another task owns the wire: nothing sent, nothing dequeued"); dbg_console_write_raw(fill, 70U); CHECK((dbg_console_dropped() == 1U) && (con_uart_tx_n == 0U) && (used_now() == (21U * (uint32_t)DBG_CON_LINE_MAX)), "TC-CONLOG-172c only a line that can neither own the wire nor fit the ring counts as a real drop, and it never half-sends"); con_task_self = (TaskHandle_t)&s_task_other; dbg_console_tx_end(); writer_drain(); CHECK((con_uart_tx_n >= (21U * (uint32_t)DBG_CON_LINE_MAX)) && tx_contains("[ERR] CONSOLE dropped 1"), "TC-CONLOG-172d once ownership frees up the deferred round goes out complete, and the true overflow surfaces as [ERR]"); /* 172e 报出去就销账（既有语义，本卡不许退化）：账清零 + 不重复报同一笔 */ CHECK((dbg_console_dropped() == 0U) && (tx_count("[ERR] CONSOLE dropped 1") == 1U), "TC-CONLOG-172e the drop ledger is settled only after the [ERR] note actually left the wire, and it is not reported twice"); /* 173 写者一轮 drain 被所有权挡住：让位 != 丢 */ reset_all(); con_task_self = (TaskHandle_t)&s_task_other; (void)dbg_console_tx_begin(); con_task_self = (TaskHandle_t)&s_task_writer; dbg_console_writer_attach(); (void)dbg_console_write_line("L1\r\n", 4U); CHECK((con_uart_tx_n == 0U) && (used_now() == 4U), "TC-CONLOG-173 while another task owns the wire the writer sends nothing and keeps every byte queued"); writer_drain(); CHECK((con_uart_tx_n == 0U) && (used_now() == 4U) && (dbg_console_dropped() == 0U), "TC-CONLOG-173b yielding a round is not a drop: the tail never advances, so no ledger moves"); con_task_self = (TaskHandle_t)&s_task_other; dbg_console_tx_end(); CHECK(s_con_tx_owner == 0, "TC-CONLOG-173c ownership is really returned (a leaked token would push every later line into the ring forever)"); writer_drain(); CHECK(tx_is(0U, "L1\r\n") && (used_now() == 0U) && (dbg_console_dropped() == 0U), "TC-CONLOG-173d the deferred round goes out complete as soon as the wire is free"); /* 174 同任务嵌套（写者一轮里再裸发留痕行）不得自我丢弃 */ reset_all(); con_task_self = (TaskHandle_t)&s_task_writer; (void)dbg_console_tx_begin(); dbg_console_write_raw("SEGA", 4U); dbg_console_write_raw("SEGB", 4U); dbg_console_tx_end(); CHECK((con_uart_tx_n == 8U) && tx_is(0U, "SEGASEGB") && (dbg_console_dropped() == 0U) && (used_now() == 0U), "TC-CONLOG-174 nested raw writes by the owner go out at once, in order, with zero drops"); con_task_self = (TaskHandle_t)&s_task_other; dbg_console_write_raw("NEXT", 4U); CHECK((con_uart_tx_n == 12U) && tx_is(8U, "NEXT") && (used_now() == 0U), "TC-CONLOG-174b after tx_end the next task owns the wire again (no permanent ring detour)"); /* 175 异常上下文：放行，不等、不计丢弃（崩溃遗言必须能出去） */ reset_all(); con_task_self = (TaskHandle_t)&s_task_other; (void)dbg_console_tx_begin(); con_ipsr = 1U; dbg_console_write_raw("[ERR] HARD", 10U); CHECK((con_uart_tx_n == 10U) && tx_is(0U, "[ERR] HARD"), "TC-CONLOG-175 an exception context sends at once even while a task owns the wire (crash logs are the last words)"); CHECK((dbg_console_dropped() == 0U) && (used_now() == 0U) && (s_con_tx_owner == (TaskHandle_t)&s_task_other), "TC-CONLOG-175b the bypass neither counts a drop nor touches the owner token (that would free a line in flight)"); con_ipsr = 0U; /* 176 调度器未启动：单执行流，不取凭证、不开临界区、一条不丢 */ reset_all(); con_task_self = 0; (void)dbg_console_tx_begin(); dbg_console_write_raw("EARLY", 5U); CHECK((con_uart_tx_n == 5U) && tx_is(0U, "EARLY") && (dbg_console_dropped() == 0U) && (s_con_tx_owner == 0) && (con_crit_enter == 0U) && (con_pm_enter == 0U), "TC-CONLOG-176 before the scheduler starts, the single execution stream sends directly, taking no token and opening neither kind of critical window"); /* 177 硬红线：整行独占绝不能把 @115200 约 7.8 ms 的发送包进关中断区 */ reset_all(); con_task_self = (TaskHandle_t)&s_task_writer; dbg_console_writer_attach(); (void)dbg_console_write_line(s_prot_line, (unsigned)strlen(s_prot_line)); writer_drain(); CHECK((con_uart_tx_n == (uint32_t)strlen(s_prot_line)) && (con_uart_crit_at_tx_max == 0U) && tx_is(0U, s_prot_line), "TC-CONLOG-177 every byte reaches the wire with interrupts enabled (ownership never wraps the transmit)"); /* 178 台架原文形态复演：那条被插进 [20 的 PROT 行，现在要么完整、要么整条让路 */ /* 逐字节照抄台架那一行的原文（含时间戳前缀与 CRLF），长度交给 strlen 现算： * 手数字节数自己就踩过一次坑（把 93 数成 39，用例先红的是我的算术） */ reset_all(); con_uart_tx_hook_at = (uint32_t)strlen(s_prot_line) - 30U; con_uart_tx_hook = s_tx_second_writer; dbg_console_write_raw(s_prot_line, (unsigned)strlen(s_prot_line)); CHECK((con_uart_tx_n == (uint32_t)strlen(s_prot_line)) && tx_is(0U, s_prot_line) && (used_now() == 6U) && (dbg_console_dropped() == 0U), "TC-CONLOG-178 the exact bench shape (that PROT line, interrupted mid-transmit) comes out unmangled: the [20 insertion is structurally gone"); /* 179 begin 失败不吞字、不越权归还 */ reset_all(); con_task_self = (TaskHandle_t)&s_task_other; (void)dbg_console_tx_begin(); con_task_self = (TaskHandle_t)&s_task_writer; CHECK(dbg_console_tx_begin() == 0U, "TC-CONLOG-179 tx_begin reports failure instead of blocking when another task owns the wire"); dbg_console_write_raw("FREE", 4U); CHECK((con_uart_tx_n == 0U) && (used_now() == 4U) && (dbg_console_dropped() == 0U), "TC-CONLOG-179b a failed begin still delivers the caller bytes (deferred, never swallowed)"); dbg_console_tx_end(); CHECK(s_con_tx_owner == (TaskHandle_t)&s_task_other, "TC-CONLOG-179c a non-owner tx_end cannot release someone else ownership (that would re-open this very hole)"); con_task_self = (TaskHandle_t)&s_task_other; dbg_console_tx_end(); CHECK(s_con_tx_owner == 0, "TC-CONLOG-179d the real owner releases normally"); } /* ===================== main ===================== */ int main(void) { tc_params(); tc_unattached(); tc_ring(); tc_writer_self(); tc_full_drop(); tc_tx_fault(); tc_tx_cool(); tc_tx_half(); tc_dwt(); tc_null_uart(); tc_fputc(); tc_budget(); tc_counted_paths(); tc_three_ledgers(); tc_check_then_act(); tc_ownership(); printf("=== Console Log Tests: %d/%d PASSED (failed=%d) ===\n", s_passed, s_total, s_failed); fflush(stdout); return (s_failed == 0) ? 0 : 1; }